Download classifier, database

CapCollector.xcodeproj/project.pbxproj

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 			buildConfigurationList = CE56CEDC209D81E000932C01 /* Build configuration list for PBXNativeTarget "CapCollector" */;
 			buildPhases = (
-				3E8A16B5B7B80A2451075442 /* [CP] Check Pods Manifest.lock */,
 				CE56CEC6209D81DD00932C01 /* Sources */,
 				CE56CEC7209D81DD00932C01 /* Frameworks */,
 				CE56CEC8209D81DD00932C01 /* Resources */,
-				135644FD94500ABE4DA09082 /* [CP] Embed Pods Frameworks */,
 			);
 			buildRules = (
 			);
 			dependencies = (
 			);
 			name = CapCollector;
+			packageProductDependencies = (
+				CEB269562445DB56004B74B3 /* SQLite */,
+				CE5B7D022458C921002E5C06 /* Reachability */,
+				CEC7F814245A2B1200B896B1 /* JGProgressHUD */,
+			);
 			productName = CapCollector;
 			productReference = CE56CECA209D81DD00932C01 /* CapCollector.app */;
 			productType = "com.apple.product-type.application";
@@ -262,7 +250,7 @@
 				TargetAttributes = {
 					CE56CEC9209D81DD00932C01 = {
 						CreatedOnToolsVersion = 9.4;
-						LastSwiftMigration = 1020;
+						LastSwiftMigration = 1100;
 						SystemCapabilities = {
 							com.apple.BackgroundModes = {
 								enabled = 0;
@@ -280,6 +268,11 @@
 				Base,
 			);
 			mainGroup = CE56CEC1209D81DD00932C01;
+			packageReferences = (
+				CEB269552445DB56004B74B3 /* XCRemoteSwiftPackageReference "SQLite" */,
+				CE5B7D012458C921002E5C06 /* XCRemoteSwiftPackageReference "Reachability" */,
+				CEC7F813245A2B1200B896B1 /* XCRemoteSwiftPackageReference "JGProgressHUD" */,
+			);
 			productRefGroup = CE56CECB209D81DD00932C01 /* Products */;
 			projectDirPath = "";
 			projectRoot = "";
@@ -295,6 +288,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				CE56CED8209D81E000932C01 /* LaunchScreen.storyboard in Resources */,
+				591FDD1E234E151600AA379E /* SearchAndDisplayAccessory.xib in Resources */,
 				CE56CED5209D81E000932C01 /* Assets.xcassets in Resources */,
 				CE56CED3209D81DE00932C01 /* Main.storyboard in Resources */,
 			);
@@ -302,82 +296,43 @@
 		};
 /* End PBXResourcesBuildPhase section */
 
-/* Begin PBXShellScriptBuildPhase section */
-		135644FD94500ABE4DA09082 /* [CP] Embed Pods Frameworks */ = {
-			isa = PBXShellScriptBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			inputPaths = (
-				"${SRCROOT}/Pods/Target Support Files/Pods-CapCollector/Pods-CapCollector-frameworks.sh",
-				"${BUILT_PRODUCTS_DIR}/Alamofire/Alamofire.framework",
-				"${BUILT_PRODUCTS_DIR}/SwiftyDropbox/SwiftyDropbox.framework",
-			);
-			name = "[CP] Embed Pods Frameworks";
-			outputPaths = (
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/Alamofire.framework",
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/SwiftyDropbox.framework",
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-			shellPath = /bin/sh;
-			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-CapCollector/Pods-CapCollector-frameworks.sh\"\n";
-			showEnvVarsInLog = 0;
-		};
-		3E8A16B5B7B80A2451075442 /* [CP] Check Pods Manifest.lock */ = {
-			isa = PBXShellScriptBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			inputPaths = (
-				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
-				"${PODS_ROOT}/Manifest.lock",
-			);
-			name = "[CP] Check Pods Manifest.lock";
-			outputPaths = (
-				"$(DERIVED_FILE_DIR)/Pods-CapCollector-checkManifestLockResult.txt",
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
-			showEnvVarsInLog = 0;
-		};
-/* End PBXShellScriptBuildPhase section */
-
 /* Begin PBXSourcesBuildPhase section */
 		CE56CEC6209D81DD00932C01 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				59C1BBA92174CBB800EC84BB /* SettingsController.swift in Sources */,
 				CE56CF09209D83B800932C01 /* Classifier.swift in Sources */,
 				5904C33A2199C9FA0046A573 /* SortController.swift in Sources */,
 				CE56CF0B209D83B800932C01 /* Logger.swift in Sources */,
-				CE56CF01209D83B800932C01 /* DropBoxController.swift in Sources */,
 				CE56CF04209D83B800932C01 /* UIViewExtensions.swift in Sources */,
 				59158B1821E4C9AC00D90CB0 /* NavigationController.swift in Sources */,
 				591832CE21A2A97E00E5987D /* Cap.swift in Sources */,
-				CE56CF08209D83B800932C01 /* DiskManager.swift in Sources */,
-				CE56CF0F209D83B800932C01 /* UIImageExtensions.swift in Sources */,
+				CE56CF08209D83B800932C01 /* Storage.swift in Sources */,
+				CE56CF0F209D83B800932C01 /* UIImage+Extensions.swift in Sources */,
+				CE5B7CFC24562673002E5C06 /* Download.swift in Sources */,
+				CE85AA18246B012B002D1074 /* Array+Extensions.swift in Sources */,
 				CE56CF03209D83B800932C01 /* TableView.swift in Sources */,
+				CEB2695B2445E54E004B74B3 /* UIColor+Extensions.swift in Sources */,
+				591FDD20234E162000AA379E /* SearchAndDisplayAccessory.swift in Sources */,
 				59158B1621E37B0200D90CB0 /* GridViewController.swift in Sources */,
-				CE56CEFD209D83B800932C01 /* NameFile.swift in Sources */,
-				59C1BBAB21762D9600EC84BB /* UserDefaults.swift in Sources */,
+				CE5B7CFE245626D3002E5C06 /* Upload.swift in Sources */,
 				CE56CECE209D81DE00932C01 /* AppDelegate.swift in Sources */,
 				CE56CF0D209D83B800932C01 /* ImageSelector.swift in Sources */,
 				CE56CEFF209D83B800932C01 /* CameraController.swift in Sources */,
+				CE5B7D0024574CCA002E5C06 /* ServerDatabase.swift in Sources */,
 				CE56CF05209D83B800932C01 /* ViewControllerExtensions.swift in Sources */,
 				5970380D225737F800D21B55 /* LogViewController.swift in Sources */,
 				CE56CF0E209D83B800932C01 /* PhotoCaptureHandler.swift in Sources */,
 				CE56CEFE209D83B800932C01 /* RoundedButton.swift in Sources */,
 				CE56CF07209D83B800932C01 /* ImageCell.swift in Sources */,
-				CE56CF00209D83B800932C01 /* UIAlertControllerExtensions.swift in Sources */,
 				CE56CF06209D83B800932C01 /* CameraView.swift in Sources */,
 				CE56CF0A209D83B800932C01 /* CropView.swift in Sources */,
 				5904C33C2199D0260046A573 /* AlwaysShowPopup.swift in Sources */,
-				599BC9DC22CDE2640061BCDB /* MobileNet.mlmodel in Sources */,
-				599BC9DA22CBBDA90061BCDB /* Squeezenet.mlmodel in Sources */,
+				CE85AA16246A96C3002D1074 /* UINavigationItem+Extensions.swift in Sources */,
+				CEB269592445DB72004B74B3 /* Database.swift in Sources */,
 				CE56CF02209D83B800932C01 /* RoundedImageView.swift in Sources */,
 				CE56CEF8209D83B800932C01 /* CapCell.swift in Sources */,
+				CE6E4828246C304100570CB0 /* CGImagePropertyOrientation+Extensions.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -519,44 +474,46 @@
 		};
 		CE56CEDD209D81E000932C01 /* Debug */ = {
 			isa = XCBuildConfiguration;
-			baseConfigurationReference = DBD72193E502C23E06DA913D /* Pods-CapCollector.debug.xcconfig */;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				CODE_SIGN_STYLE = Automatic;
 				DEVELOPMENT_TEAM = H8WR4M6QQ4;
 				INFOPLIST_FILE = CapCollector/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
+				MARKETING_VERSION = 1.4;
 				PRODUCT_BUNDLE_IDENTIFIER = christophhagen.CapCollector;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE = "";
 				PROVISIONING_PROFILE_SPECIFIER = "";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 1;
 			};
 			name = Debug;
 		};
 		CE56CEDE209D81E000932C01 /* Release */ = {
 			isa = XCBuildConfiguration;
-			baseConfigurationReference = 342A23CD7996DA1E7039C097 /* Pods-CapCollector.release.xcconfig */;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				CODE_SIGN_STYLE = Automatic;
 				DEVELOPMENT_TEAM = H8WR4M6QQ4;
 				INFOPLIST_FILE = CapCollector/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
+				MARKETING_VERSION = 1.4;
 				PRODUCT_BUNDLE_IDENTIFIER = christophhagen.CapCollector;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE = "";
 				PROVISIONING_PROFILE_SPECIFIER = "";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = 1;
 			};
 			name = Release;
@@ -583,6 +540,51 @@
 			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
+
+/* Begin XCRemoteSwiftPackageReference section */
+		CE5B7D012458C921002E5C06 /* XCRemoteSwiftPackageReference "Reachability" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/ashleymills/Reachability.swift";
+			requirement = {
+				kind = upToNextMajorVersion;
+				minimumVersion = 5.0.0;
+			};
+		};
+		CEB269552445DB56004B74B3 /* XCRemoteSwiftPackageReference "SQLite" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/stephencelis/SQLite.swift";
+			requirement = {
+				kind = upToNextMajorVersion;
+				minimumVersion = 0.12.2;
+			};
+		};
+		CEC7F813245A2B1200B896B1 /* XCRemoteSwiftPackageReference "JGProgressHUD" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/JonasGessner/JGProgressHUD";
+			requirement = {
+				kind = upToNextMajorVersion;
+				minimumVersion = 2.1.0;
+			};
+		};
+/* End XCRemoteSwiftPackageReference section */
+
+/* Begin XCSwiftPackageProductDependency section */
+		CE5B7D022458C921002E5C06 /* Reachability */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = CE5B7D012458C921002E5C06 /* XCRemoteSwiftPackageReference "Reachability" */;
+			productName = Reachability;
+		};
+		CEB269562445DB56004B74B3 /* SQLite */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = CEB269552445DB56004B74B3 /* XCRemoteSwiftPackageReference "SQLite" */;
+			productName = SQLite;
+		};
+		CEC7F814245A2B1200B896B1 /* JGProgressHUD */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = CEC7F813245A2B1200B896B1 /* XCRemoteSwiftPackageReference "JGProgressHUD" */;
+			productName = JGProgressHUD;
+		};
+/* End XCSwiftPackageProductDependency section */
 	};
 	rootObject = CE56CEC2209D81DD00932C01 /* Project object */;
 }

CapCollector.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -2,6 +2,6 @@
 <Workspace
    version = "1.0">
    <FileRef
-      location = "self:CapCollector.xcodeproj">
+      location = "self:">
    </FileRef>
 </Workspace>

CapCollector.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -0,0 +1,34 @@
+{
+  "object": {
+    "pins": [
+      {
+        "package": "JGProgressHUD",
+        "repositoryURL": "https://github.com/JonasGessner/JGProgressHUD",
+        "state": {
+          "branch": null,
+          "revision": "08d130dd614a743f813286f096804c43a6ffa3f6",
+          "version": "2.1.0"
+        }
+      },
+      {
+        "package": "Reachability",
+        "repositoryURL": "https://github.com/ashleymills/Reachability.swift",
+        "state": {
+          "branch": null,
+          "revision": "98e968e7b6c1318fb61df23e347bc319761e8acb",
+          "version": "5.0.0"
+        }
+      },
+      {
+        "package": "SQLite.swift",
+        "repositoryURL": "https://github.com/stephencelis/SQLite.swift",
+        "state": {
+          "branch": null,
+          "revision": "0a9893ec030501a3956bee572d6b4fdd3ae158a1",
+          "version": "0.12.2"
+        }
+      }
+    ]
+  },
+  "version": 1
+}

CapCollector.xcodeproj/xcuserdata/User.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -9,6 +9,11 @@
 			<key>orderHint</key>
 			<integer>0</integer>
 		</dict>
+		<key>CapCollector.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>0</integer>
+		</dict>
 	</dict>
 </dict>
 </plist>

CapCollector.xcworkspace/contents.xcworkspacedata

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Workspace
-   version = "1.0">
-   <FileRef
-      location = "group:CapCollector.xcodeproj">
-   </FileRef>
-   <FileRef
-      location = "group:Pods/Pods.xcodeproj">
-   </FileRef>
-</Workspace>

CapCollector.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>IDEDidComputeMac32BitWarning</key>
-	<true/>
-</dict>
-</plist>

CapCollector.xcworkspace/xcuserdata/christoph.xcuserdatad/IDEFindNavigatorScopes.plist

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<array/>
-</plist>

CapCollector.xcworkspace/xcuserdata/christoph.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist

@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Bucket
-   type = "0"
-   version = "2.0">
-</Bucket>

CapCollector/AppDelegate.swift

@@ -8,70 +8,93 @@
 
 import UIKit
 import CoreData
-import SwiftyDropbox
 
-/**
- TODO:
- - Mosaic: Prevent swap of tiles when tapping the free space at the right edge
- - Show banner with number of unmatched caps when using camera comparison
- - Feature: Create mosaic from image
- - Feature: Delete cap
- - Feature: Delete image of cap
- */
+import Reachability
+
+#warning("ImageSelector: Allow deletion and moving of an image of a cap")
+#warning("ImageSelector: Show icons for failed downloads")
+#warning("GridController: Allow sorting of caps by color")
+#warning("GridController: Reorder caps by dragging")
+#warning("GridController: Load and save current mosaic")
+#warning("GridController: Add option to specify image width")
+#warning("TableView: Fix blur background of search bar after transition")
+#warning("TableView: Add banner to jump down to unmatched caps / bottom")
 
 var shouldLaunchCamera = false
 
+var app: AppDelegate!
+
 @UIApplicationMain
 class AppDelegate: UIResponder, UIApplicationDelegate {
     
-    enum ShortcutIdentifier: String {
-        case first
-
-        // MARK: - Initializers
-        
-        init?(fullType: String) {
-            guard let last = fullType.components(separatedBy: ".").last else { return nil }
-            self.init(rawValue: last)
-        }
-        
-        // MARK: - Properties
-        
-        var type: String {
-            return Bundle.main.bundleIdentifier! + ".\(self.rawValue)"
-        }
-    }
-
-    // MARK: - Static Properties
+    // MARK: Static Properties
     
     /// Main tint color of the app
     static let tintColor = UIColor(red: 122/255, green: 155/255, blue: 41/255, alpha: 1)
 
     var window: UIWindow?
     
-    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+    var mainStoryboard: UIStoryboard {
+        UIStoryboard(name: "Main", bundle: nil)
+    }
+    
+    let documentsFolder = try! FileManager.default.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: true)
+    
+    var database: Database!
+    
+    var storage: Storage!
+    
+    var reachability: Reachability!
+    
+    var needsDownload = false
+    
+    var dbUrl: URL {
+        documentsFolder.appendingPathComponent("db.sqlite3")
+    }
+    
+    let serverUrl = URL(string: "https://cc.ssl443.org")!
+
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        app = self
+        
+        storage = Storage(in: documentsFolder)
+        reachability = try! Reachability()
+        
+        //resetToFactoryState()
+        
+        needsDownload = !FileManager.default.fileExists(atPath: dbUrl.path)
+        database = Database(url: dbUrl, server: serverUrl)
+            
+        if needsDownload {
+            log("New database created")
+        } else {
+            let size = (try! FileManager.default.attributesOfItem(atPath: dbUrl.path) as NSDictionary).fileSize()
+            log("Loaded \(database.capCount) caps, database size: \(size) bytes")
+            
+        }
 
-        DropboxClientsManager.setupWithAppKey("n81tx2g638wuffl")
-        DiskManager.setupOnFirstLaunch()
         return true
     }
     
-    func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
-        DropboxController.shared.handle(url: url)
-        return true
+    private func resetToFactoryState() {
+        for path in try! FileManager.default.contentsOfDirectory(at: documentsFolder, includingPropertiesForKeys: nil) {
+            try! FileManager.default.removeItem(at: path)
+        }
+        UserDefaults.standard.removeObject(forKey: Classifier.userDefaultsKey)
     }
     
     private func handleShortCutItem(_ shortcutItem: UIApplicationShortcutItem) -> Bool {
-        event("Shortcut pressed")
+        log("Shortcut pressed")
         shouldLaunchCamera = true
         return true
     }
     
     func applicationDidBecomeActive(_ application: UIApplication) {
-        Cap.uploadRemainingImages()
+        app.database?.uploadRemainingImages()
         guard shouldLaunchCamera else { return }
         shouldLaunchCamera = false
         if let c = (frontmostViewController as? UINavigationController)?.topViewController as? TableView {
-            c.performSegue(withIdentifier: "showCamera", sender: nil)
+            c.showCameraView()
         }
     }
     
@@ -97,7 +120,4 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     
 }
 
-extension AppDelegate: Logger {
-    static let logToken = "[AppDelegate]"
-    
-}
+extension AppDelegate: Logger { }

CapCollector/Assets.xcassets/mosaic.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "filename" : "picture28.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "picture56.png",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "filename" : "picture84.png",
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

CapCollector/Assets.xcassets/settings.imageset/Contents.json

@@ -0,0 +1,23 @@
+{
+  "images" : [
+    {
+      "filename" : "button_settings_white@1x.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "button_settings_white@2x.png",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "filename" : "button_settings_white@3x.png",
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

CapCollector/Capture/CameraController.swift

@@ -17,15 +17,15 @@ protocol CameraControllerDelegate {
 
 class CameraController: UIViewController {
 
-    private let imageSize = 299 // New for XCode models, 227/229 for turicreate
-
     // MARK: Outlets
 
-    @IBOutlet weak var imageButton: RoundedButton!
+    @IBOutlet weak var imageButton: UIButton!
 
     @IBOutlet weak var cropView: CropView!
 
-    @IBOutlet weak var cancelButton: RoundedButton!
+    @IBOutlet weak var cancelButton: UIButton!
+
+    @IBOutlet weak var bottomBar: UIView!
     
     @IBOutlet weak var cameraView: CameraView! {
         didSet {
@@ -89,12 +89,24 @@ class CameraController: UIViewController {
     }
 
     private func setTintColor() {
-        let tint = AppDelegate.tintColor
-        cropView.lineColor = tint
-        imageButton.borderColor = tint
-        imageButton.imageView?.tintColor = tint
-        cancelButton.borderColor = tint
-        cancelButton.set(template: "cancel", with: tint)
+        let blur = UIBlurEffect(style: .systemThinMaterial)
+        let a = UIVisualEffectView(effect: blur)
+        a.translatesAutoresizingMaskIntoConstraints = false
+        bottomBar.backgroundColor = nil
+        bottomBar.insertSubview(a, at: 0)
+        //bottomBar.addSubview(a)
+        let t = bottomBar.topAnchor.constraint(equalTo: a.topAnchor)
+        let b = bottomBar.bottomAnchor.constraint(equalTo: a.bottomAnchor)
+        let l = bottomBar.leadingAnchor.constraint(equalTo: a.leadingAnchor)
+        let r = bottomBar.trailingAnchor.constraint(equalTo: a.trailingAnchor)
+        bottomBar.addConstraints([t,b,l,r])
+        //let tint = AppDelegate.tintColor
+        //cropView.lineColor = tint
+        //imageButton.borderColor = tint
+        imageButton.imageView?.tintColor = .systemBlue
+        
+        //cancelButton.borderColor = tint
+        //cancelButton.set(template: "cancel", with: tint)
     }
     
     private func giveFeedback(_ style: UIImpactFeedbackGenerator.FeedbackStyle) {
@@ -107,8 +119,8 @@ class CameraController: UIViewController {
     private func showNoCameraAccessAlert() {
         let alert = UIAlertController(title: "Unable to access the Camera",
                                       message: "To enable access, go to Settings > Privacy > Camera and turn on Camera access for this app.",
-                                      preferredStyle: .alert,
-                                      blurStyle: .dark)
+                                      preferredStyle: .alert)//,
+                                      //blurStyle: .dark)
 
         let okAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)
         alert.addAction(okAction)
@@ -132,10 +144,9 @@ class CameraController: UIViewController {
 extension CameraController: PhotoCaptureHandlerDelegate {
 
     func didCapture(_ image: UIImage?) {
-        event("Image captured")
+        log("Image captured")
         let factor = CGFloat(cropView.relativeSize)
         self.dismiss(animated: true)
-        let size = CGSize(width: imageSize, height: imageSize)
         guard let img = image else {
             self.error("No image captured")
             return
@@ -151,14 +162,10 @@ extension CameraController: PhotoCaptureHandlerDelegate {
             return
         }
         
-        // Only use 227 x 227 image
-        let scaled = masked.resize(to: size)
+        let scaled = masked.resize(to: Cap.imageSize)
         
         delegate!.didCapture(image: scaled)
     }
 }
 
-extension CameraController: Logger {
-
-    static var logToken = "[Camera]"
-}
+extension CameraController: Logger { }

CapCollector/Capture/CameraView.swift

@@ -191,7 +191,7 @@ class CameraView: UIView {
         
         photoOutput.isHighResolutionCaptureEnabled = true
         photoOutput.isDepthDataDeliveryEnabled = false
-        photoOutput.isDualCameraDualPhotoDeliveryEnabled = false
+        //photoOutput.isDualCameraDualPhotoDeliveryEnabled = false
         photoOutput.isLivePhotoCaptureEnabled = false
         session.commitConfiguration()
     }
@@ -200,7 +200,7 @@ class CameraView: UIView {
         let screenSize = bounds.size
         let location = touch.location(in: self)
         let focusPoint = CGPoint(x: location.y / screenSize.height, y: 1.0 - location.x / screenSize.width)
-        event("Focusing on point (\(focusPoint.x),\(focusPoint.y))")
+        log("Focusing on point (\(focusPoint.x),\(focusPoint.y))")
         if let device = cameraDevice {
             do {
                 try device.lockForConfiguration()
@@ -221,7 +221,4 @@ class CameraView: UIView {
     }
 }
 
-extension CameraView: Logger {
-    
-    static let logToken = "CameraView"
-}
+extension CameraView: Logger { }

CapCollector/Capture/PhotoCaptureHandler.swift

@@ -7,6 +7,7 @@ Photo capture delegate.
 
 import AVFoundation
 import Photos
+import UIKit
 
 protocol PhotoCaptureHandlerDelegate {
 
@@ -32,13 +33,13 @@ extension PhotoCaptureHandler: AVCapturePhotoCaptureDelegate {
     func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {
 
         guard error == nil else {
-            print("PhotoCaptureHandler: \(error!)")
+            log("PhotoCaptureHandler: \(error!)")
             delegate?.didCapture(nil)
             return
         }
 
         guard let cgImage = photo.cgImageRepresentation()?.takeUnretainedValue() else {
-            print("PhotoCaptureHandler: No image captured")
+            log("PhotoCaptureHandler: No image captured")
             delegate?.didCapture(nil)
             return
         }
@@ -49,3 +50,7 @@ extension PhotoCaptureHandler: AVCapturePhotoCaptureDelegate {
         }
     }
 }
+
+extension PhotoCaptureHandler: Logger {
+    
+}

CapCollector/Classifier.swift

@@ -1,180 +0,0 @@
-//
-//  VisionHandler.swift
-//  CapFinder
-//
-//  Created by User on 12.02.18.
-//  Copyright © 2018 User. All rights reserved.
-//
-
-import Foundation
-import Vision
-import CoreML
-import UIKit
-
-/// Notify the delegate about
-protocol ClassifierDelegate {
-
-    /// Features found
-    func classifier(finished image: UIImage?)
-
-    /// Error handler
-    func classifier(error: String)
-}
-
-/// Recognise categories in images
-class Classifier: Logger {
-
-    static let logToken = "[Classifier]"
-
-    static var shared = Classifier()
-
-    /// Handles errors and recognised features
-    var delegate: ClassifierDelegate?
-
-    // MARK: Stored predictions
-
-    private var notify = false
-
-    private var image: UIImage?
-
-    /**
-     Classify an image
-     - parameter image: The image to classify
-     - parameter reportingImage: Set to true, if the delegate should receive the image
-     */
-    func recognise(image: UIImage, reportingImage: Bool = true) {
-        self.image = image
-        notify = reportingImage
-        if Persistence.useMobileNet {
-            performClassifications(model: MobileNet().model)
-        } else {
-            performClassifications(model: Squeezenet().model)
-        }
-    }
-
-    private func performClassifications(model: MLModel) {
-        let orientation = CGImagePropertyOrientation(image!.imageOrientation)
-        guard let ciImage = CIImage(image: image!) else {
-            report(error: "Unable to create CIImage")
-            return
-        }
-
-        DispatchQueue.global(qos: .userInitiated).async {
-            let handler = VNImageRequestHandler(ciImage: ciImage, orientation: orientation)
-            let model = try! VNCoreMLModel(for: model)
-            
-            let request = VNCoreMLRequest(model: model, completionHandler: { [weak self] request, error in
-                guard self != nil else {
-                    Classifier.event("Self not captured, instance deallocated?")
-                    return
-                }
-                self!.process(request: request, error: error)
-            })
-            request.imageCropAndScaleOption = .centerCrop
-            do {
-                try handler.perform([request])
-            } catch {
-                DispatchQueue.main.async {
-                    self.report(error: "Classification failed: \(error.localizedDescription)")
-                }
-            }
-        }
-    }
-    
-    private func process(request: VNRequest, error: Error?) {
-        if let e = error {
-            report(error: "Unable to classify image: \(e.localizedDescription)")
-            return
-        }
-        if let result = request.results as? [VNClassificationObservation] {
-            let classification = dict(from: result)
-            process(classification: classification)
-            return
-        }
-        if let result = (request.results as? [VNCoreMLFeatureValueObservation])?.first?.featureValue.multiArrayValue {
-            let classification = dict(from: result)
-            process(classification: classification)
-            return
-        }
-        report(error: "Invalid classifier result: \(String(describing: request.results))")
-        
-        
-    }
-
-    private func process(classification: [Int : Float]) {
-        Cap.unsortedCaps.forEach { cap in
-            cap.match = classification[cap.id] ?? 0
-        }
-        Cap.hasMatches = true
-        
-        // Update the count of recognized counts
-        Persistence.recognizedCapCount = classification.count
-        
-        report()
-    }
-
-    /// Create a dictionary from a vision prediction
-    private func dict(from results: [VNClassificationObservation]) -> [Int : Float] {
-        let array = results.map { item -> (Int, Float) in
-            return (Int(item.identifier) ?? 0, item.confidence)
-        }
-        return [Int : Float](uniqueKeysWithValues: array)
-    }
-    
-    private func dict(from results: MLMultiArray) -> [Int : Float] {
-        let length = results.count
-        let doublePtr =  results.dataPointer.bindMemory(to: Double.self, capacity: length)
-        let doubleBuffer = UnsafeBufferPointer(start: doublePtr, count: length)
-        let output = Array(doubleBuffer).enumerated().map {
-            ($0.offset + 1, Float($0.element))
-        }
-        return [Int : Float](uniqueKeysWithValues: output)
-    }
-    
-    // MARK: Callbacks
-
-    private func report(error message: String) {
-        guard delegate != nil else {
-            error("No delegate: " + message)
-            return
-        }
-        DispatchQueue.main.async {
-            self.image = nil
-            self.delegate?.classifier(error: message)
-        }
-    }
-
-    private func report() {
-        guard delegate != nil else {
-            error("No delegate")
-            return
-        }
-        DispatchQueue.main.async {
-            let img = self.notify ? self.image : nil
-            self.image = nil
-            self.delegate?.classifier(finished: img)
-        }
-    }
-}
-
-extension CGImagePropertyOrientation {
-    /**
-     Converts a `UIImageOrientation` to a corresponding
-     `CGImagePropertyOrientation`. The cases for each
-     orientation are represented by different raw values.
-
-     - Tag: ConvertOrientation
-     */
-    init(_ orientation: UIImage.Orientation) {
-        switch orientation {
-        case .up: self = .up
-        case .upMirrored: self = .upMirrored
-        case .down: self = .down
-        case .downMirrored: self = .downMirrored
-        case .left: self = .left
-        case .leftMirrored: self = .leftMirrored
-        case .right: self = .right
-        case .rightMirrored: self = .rightMirrored
-        }
-    }
-}

CapCollector/Data/Cap.swift

@@ -10,19 +10,18 @@ import Foundation
 import UIKit
 import CoreImage
 
-import SwiftyDropbox
+import SQLite
 
-protocol CapsDelegate: class {
-    
-    func capHasUpdates(_ cap: Cap)
-    
-    func capsLoaded()
-}
-
-final class Cap {
+struct Cap {
     
     // MARK: - Static variables
     
+    static let sufficientImageCount = 10
+    
+    static let imageWidth = 299 // New for XCode models, 227/229 for turicreate
+
+    static let imageSize = CGSize(width: imageWidth, height: imageWidth)
+    
     static let jpgQuality: CGFloat = 0.3
     
     private static let mosaicColumns = 40
@@ -33,657 +32,202 @@ final class Cap {
     
     private static let mosaicMargin = mosaicCellSize - mosaicRowHeight
     
-    static var delegate: CapsDelegate?
-    
-    static var shouldSave = true {
-        didSet {
-            save()
-        }
-    }
-    
-    static var hasMatches = false {
-        didSet {
-            guard !hasMatches else { return }
-            all.forEach { _, cap in
-                cap.match = nil
-            }
-        }
-    }
-    
-    static var nextUnusedId: Int {
-        return (all.keys.max() ?? 0) + 1
-    }
-    
-    /// The number of caps currently in the database
-    static var totalCapCount: Int {
-        return all.count
-    }
-    
-    /// The total number of images for all caps
-    static var imageCount: Int {
-        return all.reduce(0) { sum, cap in
-            return sum + cap.value.count
-        }
-    }
-    
-    /**
-     Match all cap names against the given string and return matches.
-     - note: Each space-separated part of the string is matched individually
-     */
-    static func caps(matching text: String) -> [Cap] {
-        let cleaned = text.clean
-        let found = all.compactMap { (_,cap) -> Cap? in
-            // For each part of text, check if name contains it
-            for textItem in cleaned.components(separatedBy: " ") {
-                if textItem != "" && !cap.name.contains(textItem) { return nil }
-            }
-            return cap
-        }
-        return found
-    }
-    
     // MARK: - Variables
     
     /// The unique number of the cap
     let id: Int
     
     /// The tile position of the cap
-    var tile: Int
+    let tile: Int
     
     /// The name of the cap
-    var name: String {
-        didSet {
-            cleanName = name.clean
-            Cap.save()
-            event("Updated name for cap \(id) to \(name)")
-            Cap.delegate?.capHasUpdates(self)
-        }
-    }
+    let name: String
     
-    /// The name of the cap wothout special characters
-    private(set) var cleanName: String
+    /// The name of the cap without special characters
+    let cleanName: String
     
     /// The number of images existing for the cap
-    private(set) var count: Int {
-        didSet {
-            Cap.save()
-            event("Updated count for cap \(id) to \(count)")
-            Cap.delegate?.capHasUpdates(self)
-        }
-    }
+    let count: Int
     
     /// The average color of the cap
-    var color: UIColor?
+    let color: UIColor
     
-    /// The similarity of the cap to the currently processed image
-    var match: Float? = nil
+    /// Indicate if the cap can be found by the recognition model
+    let matched: Bool
     
-    // MARK: - All caps
+    /// Indicate if the cap is present on the server
+    let uploaded: Bool
     
-    /// A dictionary of all known caps
-    static var all = [Int : Cap]()
+    // MARK: Init
     
-    // MARK: - Tile information
-    
-    /// A dictionary of the caps for the tiles
-    static var tiles = [Int : Cap]()
-    
-    /**
-     Get the cap image for a tile.
-     */
-    static func tileImage(tile: Int) -> UIImage? {
-        return tiles[tile]?.thumbnail
-    }
-    
-    static func tileColor(tile: Int) -> UIColor? {
-        return tiles[tile]?.averageColor
-    }
-    
-    /**
-     Switch two tiles.
-     */
-    static func switchTiles(_ lhs: Int, _ rhs: Int) {
-        let l = tiles[lhs]!
-        let r = tiles[rhs]!
-        l.tile = rhs
-        r.tile = lhs
-        tiles[rhs] = l
-        tiles[lhs] = r
-    }
-    
-    // MARK: - Initialization
-
-    /**
-     Create a new cap with an image
-     - parameter image: The main image of the cap
-     - parameter name: The name of the cap
-     */
-    init?(image: UIImage, name: String) {
-        self.id = Cap.nextUnusedId
-        self.tile = id - 1
+    init(name: String, id: Int, color: UIColor) {
+        self.id = id
+        self.count = 1
         self.name = name
-        self.count = 0
+        self.cleanName = ""
+        self.tile = id
+        self.color = color
+        self.matched = false
+        self.uploaded = false
+    }
+    
+    // MARK: SQLite
+    
+    static let table = Table("data")
+    
+    static let createQuery: String = {
+        table.create(ifNotExists: true) { t in
+            t.column(rowId, primaryKey: true)
+            t.column(rowName)
+            t.column(rowCount)
+            t.column(rowTile)
+            t.column(rowRed)
+            t.column(rowGreen)
+            t.column(rowBlue)
+            t.column(rowMatched)
+            t.column(rowUploaded)
+        }
+    }()
+    
+    static let rowId = Expression<Int>("id")
+    
+    static let rowName = Expression<String>("name")
+    
+    static let rowCount = Expression<Int>("count")
+    
+    static let rowTile = Expression<Int>("tile")
+    
+    static let rowRed = Expression<Int>("red")
+    static let rowGreen = Expression<Int>("green")
+    static let rowBlue = Expression<Int>("blue")
+    
+    static let rowMatched = Expression<Bool>("matched")
+    
+    static let rowUploaded = Expression<Bool>("uploaded")
+    
+    init(row: Row) {
+        self.id = row[Cap.rowId]
+        self.name = row[Cap.rowName]
+        self.count = row[Cap.rowCount]
+        self.tile = row[Cap.rowTile]
         self.cleanName = name.clean
-        guard save(mainImage: image) else {
-            return nil
-        }
-        Cap.all[self.id] = self
-        Cap.tiles[self.id] = self
-        Cap.shouldCreateFolderForCap(self.id)
-        Cap.save()
-        Cap.delegate?.capHasUpdates(self)
-        DispatchQueue.global(qos: .userInitiated).async {
-            self.add(image: image) { _ in
+        self.matched = row[Cap.rowMatched]
+        self.uploaded = row[Cap.rowUploaded]
         
-            }
-        }
+        let r = CGFloat(row[Cap.rowRed]) / 255
+        let g = CGFloat(row[Cap.rowGreen]) / 255
+        let b = CGFloat(row[Cap.rowBlue]) / 255
+        self.color = UIColor(red: r, green: g, blue: b, alpha: 1.0)
     }
     
-    /**
-     Create a cap from a line in the cap list file
-     */
-    init?(line: String) {
-        guard line != "" else {
-            return nil
-        }
-        let parts = line.components(separatedBy: ";")
-        guard parts.count == 4 || parts.count == 8 else {
-            Cap.error("Cap names: Invalid line \(line)")
-            return nil
-        }
-        
-        guard let nr = Int(parts[0]) else {
-            Cap.error("Invalid id in line \(line)")
-            return nil
-        }
-        guard let count = Int(parts[2]) else {
-            Cap.error("Invalid count in line \(line)")
-            return nil
-        }
-        guard let tile = Int(parts[3]) else {
-            Cap.error("Invalid tile in line \(line)")
-            return nil
-        }
-        if parts.count == 8 {
-            guard let r = Int(parts[4]), let g = Int(parts[5]), let b = Int(parts[6]), let a = Int(parts[7]) else {
-                Cap.error("Invalid color in line \(line)")
-                return nil
-            }
-            self.color = UIColor(red: CGFloat(r)/255, green: CGFloat(g)/255, blue: CGFloat(b)/255, alpha: CGFloat(a)/255)
-        }
-        
-        self.id = nr
-        self.name = parts[1]
+    init(id: Int, name: String, count: Int) {
+        self.id = id
+        self.name = name
         self.count = count
+        self.tile = id - 1
         self.cleanName = name.clean
-        self.tile = tile
-        Cap.tiles[tile] = self
-        Cap.all[id] = self
+        self.matched = false
+        self.color = UIColor.gray
+        self.uploaded = false
+    }
+    
+    var insertQuery: Insert {
+        let colors = color.rgb
+        return Cap.table.insert(
+            Cap.rowId <- id,
+            Cap.rowName <- name,
+            Cap.rowCount <- count,
+            Cap.rowTile <- tile,
+            Cap.rowRed <- colors.red,
+            Cap.rowGreen <- colors.green,
+            Cap.rowBlue <- colors.blue,
+            Cap.rowMatched <- matched,
+            Cap.rowUploaded <- uploaded)
+    }
+    
+    // MARK: Text
+    
+    func matchDescription(match: Float?) -> String {
+        guard let match = match else {
+            return hasSufficientImages ? "" : "⚠️"
+        }
+        let percent = Int((match * 100).rounded())
+        return String(format: "%d %%", arguments: [percent])
+    }
+    
+    /// The cap id and the number of images
+    var subtitle: String {
+        guard count != 1 else {
+            return "\(id) (1 image)"
+        }
+        return "\(id) (\(count) images)"
     }
     
     // MARK: - Images
 
+    var hasSufficientImages: Bool {
+        count > Cap.sufficientImageCount
+    }
+    
+    var hasImage: Bool {
+        app.storage.hasImage(for: id)
+    }
+    
     /// The main image of the cap
     var image: UIImage? {
-        guard let data = DiskManager.image(for: id) else {
-            self.downloadImage { _ in
-                Cap.delegate?.capHasUpdates(self)
-            }
-            return nil
-        }
-        return UIImage(data: data)
+        app.storage.image(for: id)
     }
 
     /// The main image of the cap
     var thumbnail: UIImage? {
-        if let data = DiskManager.thumbnail(for: id) {
-            return UIImage(data: data)
-        }
-        return makeThumbnail()
+        app.storage.thumbnail(for: id)
     }
     
-    var averageColor: UIColor? {
-        if let c = color {
-            return c
-        }
-        return makeAverageColor()
-    }
-    
-    @discardableResult
-    func makeThumbnail() -> UIImage? {
-        guard let img = image else {
-            return nil
-        }
+    static func thumbnail(for image: UIImage) -> UIImage {
         let len = GridViewController.len * 2
-        let thumb = img.resize(to: CGSize.init(width: len, height: len))
-        guard let data = thumb.pngData() else {
-            error("Failed to get PNG data from thumbnail for cap \(id)")
-            return nil
+        return image.resize(to: CGSize.init(width: len, height: len))
     }
-        _ = DiskManager.save(thumbnailData: data, for: id)
-        event("Created thumbnail for cap \(id)")
-        return thumb
+    
+    func updateLocalThumbnail() {
+        guard let img = image else {
+            return
+        }
+        let thumbnail = Cap.thumbnail(for: img)
+        guard app.storage.save(thumbnail: thumbnail, for: id) else {
+            error("Failed to save thumbnail")
+            return
+        }
+        log("Created thumbnail for cap \(id)")
+    }
+    
+    func updateLocalColor() {
+        guard let color = image?.averageColor else {
+            return
+        }
+        app.database.update(color: color, for: id)
+    }
+    
+    /**
+     Download the main image of the cap.
+     - Note: The downloaded image is automatically saved to disk
+     - returns: `true`, if the image will be downloaded, `false`, if the image is already being downloaded.
+     */
+    @discardableResult
+    func downloadMainImage(completion: @escaping (_ image: UIImage?) -> Void) -> Bool {
+        app.database.downloadMainImage(for: id, completion: completion)
     }
     
     /**
      Download a specified image of the cap.
-     - Note: If the downloaded image is the main image, it is automatically saved to disk
-     - Note: If the main image is requested and already downloaded, it is returned directly
      - parameter number: The number of the image
      - parameter completion: The completion handler, called with the image if successful
      - parameter image: The image, if the download was successful, or nil on error
+     - returns: `true`, if the image will be downloaded, `false`, if the image is already being downloaded.
     */
-    func downloadImage(_ number: Int = 0, completion: @escaping (_ image: UIImage?) -> Void) {
-        let path = imageFolderPath + "/\(id)-\(number).jpg"
-        DropboxController.client.files.download(path: path).response { data, dbError in
-            if let error = dbError {
-                self.error("Failed to download image data (\(number)) for cap \(self.id): \(error)")
-                completion(nil)
-                return
+    func downloadImage(_ number: Int, completion: @escaping (_ image: UIImage?) -> Void) -> Bool {
+        app.database.downloadImage(for: id, version: number, completion: completion)
     }
     
-            guard let d = data?.1 else {
-                self.error("Failed to download image data (\(number)) for cap \(self.id)")
-                completion(nil)
-                return
-            }
-            guard let image = UIImage(data: d) else {
-                self.error("Corrupted image data (\(number)) for cap \(self.id)")
-                completion(nil)
-                return
-            }
-            if number == 0 {
-                guard self.save(mainImage: image) else {
-                    completion(nil)
-                    return
-                }
-            }
-            self.event("Downloaded image data (\(number)) for cap \(self.id)")
-            completion(image)
-        }
-    }
-    
-    func save(mainImage: UIImage) -> Bool {
-        guard let data = mainImage.jpegData(compressionQuality: Cap.jpgQuality) else {
-            error("Failed to convert main image to data for cap \(id)")
-            return false
-        }
-        guard DiskManager.save(imageData: data, for: id) else {
-            error("Failed to save main image for cap \(id)")
-            return false
-        }
-        event("Saved main image for cap \(id) to disk")
-        makeThumbnail()
-        
-        Cap.delegate?.capHasUpdates(self)
-        return true
-    }
-    
-    func add(image: UIImage, completion: @escaping (Bool) -> Void) {
-        self.upload(image: image) { saved in
-            guard saved else {
-                completion(false)
-                return
-            }
-            // Increment cap count
-            self.count += 1
-            completion(true)
-        }
-    }
-    
-    private var imageFolderPath: String {
-        return String(format: "/Images/%04d", id)
-    }
-    
-    private static func imageFolderPath(for cap: Int) -> String {
-        return String(format: "/Images/%04d", cap)
-    }
-    
-    private func imageFilePath(imageId: Int) -> String {
-        return imageFolderPath + "/\(id)-\(imageId).jpg"
-    }
-    
-    // MARK: - Image upload
-
-    private func folderExists(completion: @escaping (_ exists: Bool?) -> Void) {
-        let path = "/Images"
-        DropboxController.client.files.listFolder(path: path).response { response, error in
-            if let e = error {
-                self.error("Failed to get image folder list: \(e)")
-                completion(nil)
-                return
-            }
-            guard let result = response else {
-                self.error("Failed to get image folder list")
-                completion(nil)
-                return
-            }
-            
-            let exists = result.entries.contains { $0.name == "\(self.id)" }
-            completion(exists)
-        }
-    }
-    
-    private static func createFolder(forCap cap: Int, completion: @escaping (_ success: Bool) -> Void) {
-        guard shouldCreateFolder(forCap: cap) else {
-            completion(true)
-            return
-        }
-        // Create folder for cap
-        let path = imageFolderPath(for: cap)
-        DropboxController.client.files.createFolderV2(path: path).response { _, error in
-            if let err = error {
-                self.event("Could not create folder for cap \(cap): \(err)")
-                completion(false)
-            } else {
-                self.event("Created folder for cap \(cap)")
-                didCreateFolder(forCap: cap)
-                completion(true)
-            }
-        }
-    }
-    
-    private func upload(image: UIImage, savedCallback: @escaping (Bool) -> Void) {
-        upload(image: image, number: count, savedCallback: savedCallback)
-    }
-    
-    private func upload(image: UIImage, number: Int, savedCallback: @escaping (Bool) -> Void) {
-        // Convert to data
-        guard let data = image.jpegData(compressionQuality: Cap.jpgQuality) else {
-            error("Failed to convert image to data")
-            return
-        }
-        let fileName = "\(id)-\(number).jpg"
-        // Save image to upload folder
-        guard let url = DiskManager.saveForUpload(imageData: data, name: fileName) else {
-            error("Could not save image for cap \(id) to upload folder")
-            savedCallback(false)
-            return
-        }
-        event("Saved image \(number) for cap \(id) for upload")
-        savedCallback(true)
-        
-        Cap.uploadCapImage(at: url, forCap: id) { success in
-            
-        }
-    }
-    
-    private static func uploadCapImage(at url: URL, forCap cap: Int, completion: @escaping (Bool) -> Void) {
-        createFolder(forCap: cap) { created in
-            guard created else { return }
-            uploadCapImage(at: url, forCapWithExistingFolder: cap, completion: completion)
-        }
-    }
-    
-    private static func uploadCapImage(at url: URL, forCapWithExistingFolder cap: Int, completion: @escaping (Bool) -> Void) {
-        let path = imageFolderPath(for: cap) + "/" + url.lastPathComponent
-        
-        let data: Data
-        do {
-            data = try Data(contentsOf: url)
-        } catch {
-            self.error("Could not read data from url \(url.path): \(error)")
-            completion(false)
-            return
-        }
-        
-        DropboxController.client.files.upload(path: path, input: data).response { response, error in
-            if let err = error {
-                self.error("Failed to upload file at url: \(url): \(err)")
-                completion(false)
-                return
-            }
-            Cap.event("Uploaded image \(path)")
-            guard DiskManager.removeFromUpload(url: url) else {
-                self.error("Could not delete uploaded image for cap \(cap) at url \(url)")
-                completion(false)
-                return
-            }
-            completion(true)
-        }
-    }
-    
-    static func uploadRemainingImages() {
-        guard let list = DiskManager.pendingUploads else {
-            return
-        }
-        guard list.count != 0 else {
-            event("No pending uploads")
-            return
-        }
-        event("\(list.count) image uploads pending")
-        
-        for url in list {
-            let cap = Int(url.lastPathComponent.components(separatedBy: "-").first!)!
-            uploadCapImage(at: url, forCap: cap) { didUpload in
-                // Delete image from disk if uploaded
-                guard didUpload else {
-                    self.error("Could not upload image at url \(url)")
-                    return
-                }
-                guard DiskManager.removeFromUpload(url: url) else {
-                    self.error("Could not delete uploaded image at url \(url)")
-                    return
-                }
-            }
-        }
-    }
-    
-    func setMainImage(to imageId: Int, image: UIImage) {
-        guard imageId != 0 else {
-            self.event("No need to switch main image with itself")
-            return
-        }
-        let tempFile = imageFilePath(imageId: count)
-        let oldFile = imageFilePath(imageId: 0)
-        let newFile = imageFilePath(imageId: imageId)
-        DropboxController.shared.move(file: oldFile, to: tempFile) { success in
-            guard success else {
-                self.error("Could not move \(oldFile) to \(tempFile)")
-                return
-            }
-            DropboxController.shared.move(file: newFile, to: oldFile) { success in
-                guard success else {
-                    self.error("Could not move \(newFile) to \(oldFile)")
-                    return
-                }
-                DropboxController.shared.move(file: tempFile, to: newFile) { success in
-                    if !success {
-                        self.error("Could not move \(tempFile) to \(newFile)")
-                    }
-                    guard self.save(mainImage: image) else {
-                        return
-                    }
-                    self.event("Successfully set image \(imageId) to main image for cap \(self.id)")
-                }
-            }
-        }
-    }
-    
-    // MARK: - Counts
-    
-    func updateCount(completion: @escaping (Bool) -> Void) {
-        getImageCount { response in
-            guard let count = response else {
-                self.error("Could not update count for cap \(self.id)")
-                completion(false)
-                return
-            }
-            self.count = count
-            completion(true)
-        }
-    }
-    
-    private func getImageCount(completion: @escaping (Int?) -> Void) {
-        let path = imageFolderPath
-        DropboxController.client.files.listFolder(path: path).response { response, error in
-            if let err = error {
-                self.error("Error getting folder content of cap \(self.id): \(err)")
-                completion(nil)
-                return
-            }
-            guard let files = response?.entries else {
-                self.error("No content for folder of cap \(self.id)")
-                completion(nil)
-                return
-            }
-            completion(files.count)
-        }
-    }
-    
-    // MARK: - Sorted caps
-    
-    static var unsortedCaps: Set<Cap> {
-        return Set(all.values)
-    }
-    
-    static func capList(sortedBy criteria: SortCriteria, ascending: Bool) -> [Cap] {
-        if ascending {
-            return sorted([Cap](all.values), ascendingBy: criteria)
-        } else {
-            return sorted([Cap](all.values), descendingBy: criteria)
-        }
-    }
-    
-    private static func sorted(_ list: [Cap], ascendingBy parameter: SortCriteria) -> [Cap] {
-        switch parameter {
-        case .id: return list.sorted { $0.id < $1.id }
-        case .count: return list.sorted { $0.count < $1.count }
-        case .name: return list.sorted { $0.name < $1.name }
-        case .match: return list.sorted { $0.match ?? 0 < $1.match ?? 0 }
-        }
-    }
-    
-    private static func sorted(_ list: [Cap], descendingBy parameter: SortCriteria) -> [Cap] {
-        switch parameter {
-        case .id: return list.sorted { $0.id > $1.id }
-        case .count: return list.sorted { $0.count > $1.count }
-        case .name: return list.sorted { $0.name > $1.name }
-        case .match: return list.sorted { $0.match ?? 0 > $1.match ?? 0 }
-        }
-    }
-    
-    // MARK: - Loading, Saving & Uploading cap list
-    
-    /**
-     Either load the names from disk or download them from dropbox.
-     - parameter completion: The handler that is called with true on success, false on failure
-     */
-    static func load() {
-        NameFile.makeAvailable { content in
-            guard let lines = content else {
-                return
-            }
-            self.readNames(from: lines)
-        }
-    }
-    
-    /// Read all caps from the content of a file
-    private static func readNames(from fileContent: String) {
-        let parts = fileContent.components(separatedBy: "\n")
-        for line in parts {
-            _ = Cap(line: line)
-        }
-        event("Loaded \(totalCapCount) caps from file")
-        delegate?.capsLoaded()
-    }
-    
-    static func getCapStatistics() -> [Int] {
-        let counts = all.values.map { $0.count }
-        var c = [Int](repeating: 0, count: counts.max()! + 1)
-        counts.forEach { c[$0] += 1 }
-        return c
-    }
-    
-    static func save() {
-        guard shouldSave else { return }
-        let content = namesAsString()
-        NameFile.save(names: content)
-    }
-    
-    static func saveAndUpload(completion: @escaping (Bool) -> Void) {
-        let content = namesAsString()
-        NameFile.saveAndUpload(names: content) { success in
-            guard success else {
-                completion(false)
-                return
-            }
-            Persistence.lastUploadedCapCount = totalCapCount
-            Persistence.lastUploadedImageCount = imageCount
-            completion(true)
-        }
-    }
-    
-    private static func namesAsString() -> String {
-        return capList(sortedBy: .id, ascending: true).reduce("") { $0 + $1.description }
-    }
-    
-    // MARK: - Folders to upload
-    
-    static func shouldCreateFolderForCap(_ cap: Int) {
-        let oldCaps = Persistence.folderNotCreated
-        guard !oldCaps.contains(cap) else {
-            return
-        }
-        let newCaps = oldCaps + [cap]
-        Persistence.folderNotCreated = newCaps
-    }
-    
-    static func shouldCreateFolder(forCap cap: Int) -> Bool {
-        return Persistence.folderNotCreated.contains(cap)
-    }
-    
-    static func didCreateFolder(forCap cap: Int) {
-        let oldCaps = Persistence.folderNotCreated
-        guard oldCaps.contains(cap) else {
-            return
-        }
-        Persistence.folderNotCreated = oldCaps.filter { $0 != cap }
-    }
-    
-    // MARK: - Average color
-    
-    @discardableResult
-    func makeAverageColor() -> UIColor? {
-        guard let url = DiskManager.imageUrlForCap(id) else {
-            event("No main image for cap \(id), no average color calculated")
-            return nil
-        }
-        
-        guard let inputImage = CIImage(contentsOf: url) else {
-            error("Failed to read CIImage for main image of cap \(id)")
-            return nil
-        }
-        let extentVector = CIVector(x: inputImage.extent.origin.x, y: inputImage.extent.origin.y, z: inputImage.extent.size.width, w: inputImage.extent.size.height)
-        
-        guard let filter = CIFilter(name: "CIAreaAverage", parameters: [kCIInputImageKey: inputImage, kCIInputExtentKey: extentVector]) else {
-            error("Failed to create filter to calculate average for cap \(id)")
-            return nil
-        }
-        guard let outputImage = filter.outputImage else {
-            error("Failed get filter output for image of cap \(id)")
-            return nil
-        }
-        
-        var bitmap = [UInt8](repeating: 0, count: 4)
-        let context = CIContext(options: [.workingColorSpace: kCFNull])
-        context.render(outputImage, toBitmap: &bitmap, rowBytes: 4, bounds: CGRect(x: 0, y: 0, width: 1, height: 1), format: .RGBA8, colorSpace: nil)
-        
-        color = UIColor(
-            red: saturate(bitmap[0]),
-            green: saturate(bitmap[1]),
-            blue: saturate(bitmap[2]),
-            alpha: CGFloat(bitmap[3]) / 255)
-        
-        event("Average color updated for cap \(id)")
-        Cap.save()
-        return color
-    }
-}
-
-/// Map expected range 75-200 to 0-255
-private func saturate(_ component: UInt8) -> CGFloat {
-    return max(min(CGFloat(component) * 2 - 150, 255), 0) / 255
 }
 
 // MARK: - Protocol Hashable
@@ -705,31 +249,14 @@ extension Cap: Hashable {
 extension Cap: CustomStringConvertible {
     
     var description: String {
-        guard let c = color else {
-            return String(format: "%04d", id) + ";\(name);\(count);\(tile)\n"
-        }
-        
-        var fRed: CGFloat = 0
-        var fGreen: CGFloat = 0
-        var fBlue: CGFloat = 0
-        var fAlpha: CGFloat = 0
-        guard c.getRed(&fRed, green: &fGreen, blue: &fBlue, alpha: &fAlpha) else {
-            return String(format: "%04d", id) + ";\(name);\(count);\(tile)\n"
-        }
-        let r = Int(fRed * 255.0)
-        let g = Int(fGreen * 255.0)
-        let b = Int(fBlue * 255.0)
-        let a = Int(fAlpha * 255.0)
-        return String(format: "%04d", id) + ";\(name);\(count);\(tile);\(r);\(g);\(b);\(a)\n"
+        let rgb = color.rgb
+        return String(format: "%04d", id) + ";\(name);\(count);\(tile);\(rgb.red);\(rgb.green);\(rgb.blue)\n"
     }
 }
 
 // MARK: - Protocol Logger
 
-extension Cap: Logger {
-    
-    static let logToken = "[CAP]"
-}
+extension Cap: Logger { }
 
 // MARK: - String extension
 

CapCollector/Data/Classifier.swift

@@ -0,0 +1,68 @@
+//
+//  VisionHandler.swift
+//  CapFinder
+//
+//  Created by User on 12.02.18.
+//  Copyright © 2018 User. All rights reserved.
+//
+
+import Foundation
+import Vision
+import CoreML
+import UIKit
+
+/// Recognise categories in images
+class Classifier: Logger {
+    
+    static let userDefaultsKey = "classifier.version"
+    
+    let model: VNCoreMLModel
+    
+    init(model: VNCoreMLModel) {
+        self.model = model
+    }
+    /**
+     Classify an image
+     - Parameter image: The image to classify
+     - Note: This method should not be scheduled on the main thread.
+     */
+    func recognize(image: UIImage, completion: @escaping (_ matches: [Int: Float]?) -> Void) {
+        guard let ciImage = CIImage(image: image) else {
+            error("Unable to create CIImage")
+            completion(nil)
+            return
+        }
+
+        let orientation = CGImagePropertyOrientation(image.imageOrientation)
+        let handler = VNImageRequestHandler(ciImage: ciImage, orientation: orientation)
+        let request = VNCoreMLRequest(model: model) { request, error in
+            let matches = self.process(request: request, error: error)
+            completion(matches)
+        }
+        request.imageCropAndScaleOption = .centerCrop
+        do {
+            try handler.perform([request])
+        } catch {
+            self.error("Failed to perform classification: \(error)")
+        }
+    }
+    
+    private func process(request: VNRequest, error: Error?) -> [Int : Float]? {
+        if let e = error {
+            self.error("Unable to classify image: \(e.localizedDescription)")
+            return nil
+        }
+        guard let result = request.results as? [VNClassificationObservation] else {
+            self.error("Invalid classifier result: \(String(describing: request.results))")
+            return nil
+        }
+        let matches = result.reduce(into: [:]) { $0[Int($1.identifier)!] = $1.confidence }
+        
+        log("Classifed image with \(matches.count) classes")
+        DispatchQueue.global(qos: .background).async {
+            app.database.update(recognizedCaps: Set(matches.keys))
+        }
+        
+        return matches
+    }
+}

CapCollector/Data/Database.swift

@@ -0,0 +1,621 @@
+//
+//  Database.swift
+//  CapCollector
+//
+//  Created by Christoph on 14.04.20.
+//  Copyright © 2020 CH. All rights reserved.
+//
+
+import Foundation
+import UIKit
+import CoreML
+import SQLite
+
+protocol DatabaseDelegate: class {
+    
+    func database(didChangeCap cap: Int)
+    
+    func database(didAddCap cap: Cap)
+    
+    func databaseRequiresFullRefresh()
+}
+
+struct Weak {
+    
+  weak var value : DatabaseDelegate?
+    
+  init (_ value: DatabaseDelegate) {
+    self.value = value
+  }
+}
+
+extension Array where Element == Weak {
+    
+  mutating func reap () {
+    self = self.filter { $0.value != nil }
+    }
+}
+
+final class Database {
+    
+    // MARK: Variables
+    
+    let db: Connection
+    
+    let upload: Upload
+    
+    let download: Download
+    
+    private var listeners = [Weak]()
+    
+    // MARK: Listeners
+    
+    func add(listener: DatabaseDelegate) {
+        listeners.append(Weak(listener))
+    }
+    
+    init?(url: URL, server: URL) {
+        guard let db = try? Connection(url.path) else {
+            return nil
+        }
+        
+        let upload = Upload(server: server)
+        let download = Download(server: server)
+        
+        do {
+            try db.run(Cap.createQuery)
+            try db.run(upload.createQuery)
+        } catch {
+            return nil
+        }
+
+        self.db = db
+        self.upload = upload
+        self.download = download
+        log("Database loaded with \(capCount) caps")
+    }
+    
+    // MARK: Computed properties
+
+    /// All caps currently in the database
+    var caps: [Cap] {
+        (try? db.prepare(Cap.table))?.map(Cap.init) ?? []
+    }
+    
+    /// The ids of the caps which weren't included in the last classification
+    var unmatchedCaps: [Int] {
+        let query = Cap.table.select(Cap.rowId).filter(Cap.rowMatched == false)
+        return (try? db.prepare(query).map { $0[Cap.rowId] }) ?? []
+    }
+    
+    /// The number of caps which could be recognized during the last classification
+    var recognizedCapCount: Int {
+        (try? db.scalar(Cap.table.filter(Cap.rowMatched == true).count)) ?? 0
+    }
+    
+    /// The number of caps currently in the database
+    var capCount: Int {
+        (try? db.scalar(Cap.table.count)) ?? 0
+    }
+    
+    /// The total number of images for all caps
+    var imageCount: Int {
+        (try? db.prepare(Cap.table).reduce(0) { $0 + $1[Cap.rowCount] }) ?? 0
+    }
+    
+    /// The number of caps without a downloaded image
+    var capsWithoutImages: Int {
+        caps.filter({ !$0.hasImage }).count
+    }
+    
+
+
+    var pendingUploads: [(cap: Int, version: Int)] {
+        do {
+            return try db.prepare(upload.table).map { row in
+                (cap: row[upload.rowCapId], version: row[upload.rowCapVersion])
+            }
+        } catch {
+            log("Failed to get pending uploads")
+            return []
+        }
+    }
+    
+    /// Indicate if there are any unfinished uploads
+    var hasPendingUploads: Bool {
+        ((try? db.scalar(upload.table.count)) ?? 0) > 0
+    }
+    
+    var classifierVersion: Int {
+        set {
+            UserDefaults.standard.set(newValue, forKey: Classifier.userDefaultsKey)
+            log("Classifier version set to \(newValue)")
+        }
+        get {
+            UserDefaults.standard.integer(forKey: Classifier.userDefaultsKey)
+        }
+    }
+    
+    // MARK: Data updates
+    
+    /**
+     Create a new cap with an image.
+     
+     The cap is inserted into the database, and the name and image will be uploaded to the server.
+     
+     - parameter image: The main image of the cap
+     - parameter name: The name of the cap
+     - note: Must be called on the main queue.
+     - note: The registered delegates will be informed about the added cap through `database(didAddCap:)`
+     - returns: `true`, if the cap was created.
+     */
+    func createCap(image: UIImage, name: String) -> Bool {
+        guard let color = image.averageColor else {
+            return false
+        }
+        let cap = Cap(name: name, id: capCount, color: color)
+        guard insert(cap: cap) else {
+            return false
+        }
+        guard app.storage.save(image: image, for: cap.id) else {
+            return false
+        }
+        listeners.forEach { $0.value?.database(didAddCap: cap) }
+        upload.upload(name: name, for: cap.id) { success in
+            guard success else {
+                return
+            }
+            self.update(uploaded: true, for: cap.id)
+            self.upload.uploadImage(for: cap.id, version: 0) { count in
+                guard let count = count else {
+                    self.log("Failed to upload first image for cap \(cap.id)")
+                    return
+                }
+                self.log("Uploaded first image for cap \(cap.id)")
+                self.update(count: count, for: cap.id)
+            }
+        }
+        return true
+    }
+    
+    /**
+     Insert a new cap.
+     
+     Only inserts the cap into the database, and optionally notifies the delegates.
+     - note: When a new cap is created, use `createCap(image:name:)` instead
+     */
+    @discardableResult
+    private func insert(cap: Cap, notifyDelegate: Bool = true) -> Bool {
+        do {
+            try db.run(cap.insertQuery)
+            if notifyDelegate {
+                listeners.forEach { $0.value?.database(didAddCap: cap) }
+            }
+            return true
+        } catch {
+            log("Failed to insert cap \(cap.id): \(error)")
+            return false
+        }
+    }
+    
+    func add(image: UIImage, for cap: Int) -> Bool {
+        guard let version = count(for: cap) else {
+            log("Failed to get count for cap \(cap)")
+            return false
+        }
+        guard app.storage.save(image: image, for: cap, version: version) else {
+            log("Failed to save image \(version) for cap \(cap) to disk")
+            return false
+        }
+        guard update(count: version + 1, for: cap) else {
+            log("Failed update count \(version) for cap \(cap)")
+            return false
+        }
+        listeners.forEach { $0.value?.database(didChangeCap: cap) }
+        
+        guard addPendingUpload(for: cap, version: version) else {
+            log("Failed to add cap \(cap) version \(version) to upload queue")
+            return false
+        }
+        upload.uploadImage(for: cap, version: version) { count in
+            guard let _ = count else {
+                self.log("Failed to upload image \(version) for cap \(cap)")
+                return
+            }
+            guard self.removePendingUpload(of: cap, version: version) else {
+                self.log("Failed to remove version \(version) for cap \(cap) from upload queue")
+                return
+            }
+            self.log("Uploaded version \(version) for cap \(cap)")
+        }
+        return true
+    }
+    
+    // MARK: Updating cap properties
+    
+    private func update(_ property: String, for cap: Int, setter: Setter...) -> Bool {
+        do {
+            let query = updateQuery(for: cap).update(setter)
+            try db.run(query)
+            listeners.forEach { $0.value?.database(didChangeCap: cap) }
+            return true
+        } catch {
+            log("Failed to update \(property) for cap \(cap): \(error)")
+            return false
+        }
+    }
+    
+    @discardableResult
+    private func update(uploaded: Bool, for cap: Int) -> Bool {
+        update("uploaded", for: cap, setter: Cap.rowUploaded <- uploaded)
+    }
+    
+    @discardableResult
+    func update(name: String, for cap: Int) -> Bool {
+        update("name", for: cap, setter: Cap.rowName <- name)
+    }
+    
+    @discardableResult
+    func update(color: UIColor, for cap: Int) -> Bool {
+        let (red, green, blue) = color.rgb
+        return update("color", for: cap, setter: Cap.rowRed <- red, Cap.rowGreen <- green, Cap.rowBlue <- blue)
+    }
+    
+    @discardableResult
+    func update(tile: Int, for cap: Int) -> Bool {
+        update("tile", for: cap, setter: Cap.rowTile <- tile)
+    }
+    
+    @discardableResult
+    func update(count: Int, for cap: Int) -> Bool {
+        update("count", for: cap, setter: Cap.rowCount <- count)
+    }
+    
+    @discardableResult
+    func update(matched: Bool, for cap: Int) -> Bool {
+        update("matched", for: cap, setter: Cap.rowMatched <- matched)
+    }
+    
+    func update(recognizedCaps: Set<Int>) {
+        let unrecognized = self.unmatchedCaps
+        // Update caps which haven't been recognized before
+        let newlyRecognized = recognizedCaps.intersection(unrecognized)
+        let logIndividualMessages = newlyRecognized.count < 10
+        if !logIndividualMessages {
+            log("Marking \(newlyRecognized.count) caps as matched")
+        }
+        for cap in newlyRecognized {
+            if logIndividualMessages {
+                log("Marking cap \(cap) as matched")
+            }
+            update(matched: true, for: cap)
+        }
+        // Update caps which are no longer recognized
+        let missing = Set(1...capCount).subtracting(recognizedCaps).subtracting(unrecognized)
+        for cap in missing {
+            log("Marking cap \(cap) as not matched")
+            update(matched: false, for: cap)
+        }
+    }
+    
+    func addPendingUpload(for cap: Int, version: Int) -> Bool {
+        do {
+            try db.run(upload.insertQuery(for: cap, version: version))
+            return true
+        } catch {
+            log("Failed to add pending upload of cap \(cap) version \(version): \(error)")
+            return false
+        }
+    }
+    
+    func removePendingUpload(for cap: Int, version: Int) -> Bool {
+        do {
+            try db.run(upload.deleteQuery(for: cap, version: version))
+            return true
+        } catch {
+            log("Failed to remove pending upload of cap \(cap) version \(version): \(error)")
+            return false
+        }
+    }
+    
+    // MARK: Information retrieval
+    
+    func cap(for id: Int) -> Cap? {
+        do {
+            guard let row = try db.pluck(updateQuery(for: id)) else {
+                log("No cap with id \(id) in database")
+                return nil
+            }
+            return Cap(row: row)
+        } catch {
+            log("Failed to get cap \(id): \(error)")
+            return nil
+        }
+    }
+    
+    private func count(for cap: Int) -> Int? {
+        do {
+            let row = try db.pluck(updateQuery(for: cap).select(Cap.rowCount))
+            return row?[Cap.rowCount]
+        } catch {
+            log("Failed to get count for cap \(cap)")
+            return nil
+        }
+    }
+    
+    func countOfCaps(withImageCountLessThan limit: Int) -> Int {
+        do {
+            return try db.scalar(Cap.table.filter(Cap.rowCount < limit).count)
+        } catch {
+            log("Failed to get caps with less than \(limit) images")
+            return 0
+        }
+    }
+    
+    func lowestImageCountForCaps(startingAt start: Int) -> (count: Int, numberOfCaps: Int) {
+        do {
+            var currentCount = start - 1
+            var capsFound = 0
+            repeat {
+                currentCount += 1
+                capsFound = try db.scalar(Cap.table.filter(Cap.rowCount == currentCount).count)
+            } while capsFound == 0
+            
+            return (currentCount, capsFound)
+        } catch {
+            return (0,0)
+        }
+    }
+    
+    func updateQuery(for cap: Int) -> Table {
+        Cap.table.filter(Cap.rowId == cap)
+    }
+    
+    // MARK: Downloads
+    
+    @discardableResult
+    func downloadMainImage(for cap: Int, completion: @escaping (_ image: UIImage?) -> Void) -> Bool {
+        return download.image(for: cap, version: 0) { image in
+            // Guaranteed to be on the main queue
+            guard let image = image else {
+                completion(nil)
+                return
+            }
+            
+            defer {
+                completion(image)
+            }
+            if !app.storage.save(thumbnail: Cap.thumbnail(for: image), for: cap) {
+                self.log("Failed to save thumbnail for cap \(cap)")
+            }
+            guard let color = image.averageColor else {
+                self.log("Failed to calculate color for cap \(cap)")
+                return
+            }
+            self.update(color: color, for: cap)
+        }
+    }
+    
+    @discardableResult
+    func downloadImage(for cap: Int, version: Int, completion: @escaping (_ image: UIImage?) -> Void) -> Bool {
+        return download.image(for: cap, version: version, completion: completion)
+    }
+    
+    func getServerDatabaseSize(completion: @escaping (_ size: Int64?) -> Void) {
+        download.databaseSize(completion: completion)
+    }
+    
+    func downloadServerDatabase(progress: Download.Delegate.ProgressHandler? = nil, completion: @escaping (_ success: Bool) -> Void, processed: (() -> Void)? = nil) {
+        download.database(progress: progress) { tempUrl in
+            guard let url = tempUrl else {
+                self.log("Failed to download database")
+                completion(false)
+                return
+            }
+            completion(true)
+            self.processServerDatabase(at: url)
+            processed?()
+        }
+    }
+    
+    func downloadMainCapImages(progress: @escaping (_ current: Int, _ total: Int) -> Void) {
+        let caps = self.caps.filter { !$0.hasImage }.map { $0.id }
+        
+        var downloaded = 0
+        let total = caps.count
+        
+        func update() {
+            DispatchQueue.main.async {
+                progress(downloaded, total)
+            }
+        }
+        update()
+        
+        guard total > 0 else {
+            log("No images to download")
+            return
+        }
+        log("Starting to download \(total) images")
+        
+        let group = DispatchGroup()
+        let split = 50
+        DispatchQueue.global(qos: .userInitiated).async {
+            for part in caps.split(intoPartsOf: split) {
+                for id in part {
+                    let downloading = self.downloadMainImage(for: id) { _ in
+                        group.leave()
+                    }
+                    if downloading {
+                        group.enter()
+                    }
+                }
+                if group.wait(timeout: .now() + .seconds(30)) != .success {
+                    self.log("Timed out waiting for images to be downloaded")
+                }
+                downloaded += part.count
+                self.log("Finished \(downloaded) of \(total) image downloads")
+                update()
+            }
+            self.log("Finished all image downloads")
+        }
+        
+    }
+    
+    func hasNewClassifier(completion: @escaping (_ version: Int?, _ size: Int64?) -> Void) {
+        download.classifierVersion { version in
+            guard let version = version else {
+                self.log("Failed to download server model version")
+                completion(nil, nil)
+                return
+            }
+            let ownVersion = self.classifierVersion
+            guard ownVersion < version else {
+                self.log("Not updating classifier: Own version \(ownVersion), server version \(version)")
+                completion(nil, nil)
+                return
+            }
+            self.log("Getting classifier size: Own version \(ownVersion), server version \(version)")
+            self.download.classifierSize { size in
+                completion(version, size)
+            }
+        }
+    }
+    
+    func downloadClassifier(progress: Download.Delegate.ProgressHandler? = nil, completion: @escaping (_ success: Bool) -> Void) {
+        download.classifier(progress: progress) { url in
+            guard let url = url else {
+                self.log("Failed to download classifier")
+                completion(false)
+                return
+            }
+            let compiledUrl: URL
+            do {
+                compiledUrl = try MLModel.compileModel(at: url)
+            } catch {
+                self.log("Failed to compile downloaded classifier: \(error)")
+                completion(false)
+                return
+            }
+            
+            guard app.storage.save(recognitionModelAt: compiledUrl) else {
+                self.log("Failed to save classifier")
+                completion(false)
+                return
+            }
+            completion(true)
+            self.download.classifierVersion { version in
+                guard let version = version else {
+                    self.log("Failed to download classifier version")
+                    return
+                }
+                self.classifierVersion = version
+            }
+        }
+    }
+    
+    func downloadImageCounts() {
+        guard !hasPendingUploads else {
+            log("Waiting to refresh server image counts (uploads pending)")
+            return
+        }
+        log("Refreshing server image counts")
+        app.database.download.imageCounts { counts in
+            guard let counts = counts else {
+                self.log("Failed to download server image counts")
+                return
+            }
+            self.didDownload(imageCounts: counts)
+            
+        }
+    }
+    
+    private func didDownload(imageCounts newCounts: [(cap: Int, count: Int)]) {
+        let capsCounts = self.caps.reduce(into: [:]) { $0[$1.id] = $1.count }
+        if newCounts.count != capsCounts.count {
+            log("Downloaded \(newCounts.count) image counts, but \(app.database.capCount) caps stored locally")
+            return
+        }
+        let changed = newCounts.compactMap { id, newCount -> Int? in
+            guard let oldCount = capsCounts[id] else {
+                log("Received count \(newCount) for unknown cap \(id)")
+                return nil
+            }
+            guard oldCount != newCount else {
+                return nil
+            }
+            app.database.update(count: newCount, for: id)
+            return id
+        }
+        switch changed.count {
+        case 0:
+            log("Refreshed image counts for all caps without changes")
+        case 1:
+            log("Refreshed image counts for caps, changed cap \(changed[0])")
+        case 2...10:
+            log("Refreshed image counts for caps \(changed.map(String.init).joined(separator: ", ")).")
+        default:
+            log("Refreshed image counts for all caps (\(changed.count) changed)")
+        }
+    }
+
+    private func processServerDatabase(at url: URL) {
+        guard let db = ServerDatabase(downloadedTo: url) else {
+            log("Failed to open downloaded server database")
+            return
+        }
+        for (id, count, name) in db.caps {
+            let cap = Cap(id: id, name: name, count: count)
+            insert(cap: cap, notifyDelegate: false)
+        }
+        listeners.forEach { $0.value?.databaseRequiresFullRefresh() }
+    }
+    
+    func uploadRemainingImages() {
+        guard pendingUploads.count > 0 else {
+            log("No pending uploads")
+            return
+        }
+        log("\(pendingUploads.count) image uploads pending")
+        
+        for (cap, version) in pendingUploads {
+            upload.uploadImage(for: cap, version: version) { count in
+                guard let _ = count else {
+                    self.log("Failed to upload version \(version) of cap \(cap)")
+                    return
+                }
+                self.log("Uploaded version \(version) of cap \(cap)")
+                self.removePendingUpload(of: cap, version: version)
+            }
+        }
+    }
+    
+    @discardableResult
+    func removePendingUpload(of cap: Int, version: Int) -> Bool {
+        do {
+            let query = upload.table.filter(upload.rowCapId == cap && upload.rowCapVersion == version).delete()
+            try db.run(query)
+            log("Deleted pending upload of cap \(cap) version \(version)")
+            return true
+        } catch {
+            log("Failed to delete pending upload of cap \(cap) version \(version)")
+            return false
+        }
+    }
+    
+    func setMainImage(of cap: Int, to version: Int) {
+        guard version != 0 else {
+            log("No need to switch main image with itself for cap \(cap)")
+            return
+        }
+        upload.setMainImage(for: cap, to: version) { color in
+            guard let color = color else {
+                self.log("Could not make \(version) the main image for cap \(cap)")
+                return
+            }
+            self.update(color: color, for: cap)
+            self.listeners.forEach { $0.value?.database(didChangeCap: cap) }
+        }
+    }
+}
+
+extension Database: Logger { }

CapCollector/Data/DiskManager.swift

@@ -1,207 +0,0 @@
-//
-//  DiskManager.swift
-//  CapFinder
-//
-//  Created by User on 23.04.18.
-//  Copyright © 2018 User. All rights reserved.
-//
-
-import Foundation
-import UIKit
-
-final class DiskManager {
-
-    enum LocalDirectory: String {
-        /// Folder for new images to upload
-        case upload = "Upload"
-
-        /// Folder for downloaded images
-        case images = "Images"
-
-        /// Folder for downloaded images
-        case thumbnails = "Thumbnails"
-
-        /// Directory for name file
-        case files = "Files"
-
-        private static let fm = FileManager.default
-
-        /// The url to the file sstem
-        var url: URL {
-            return URL(fileURLWithPath: self.rawValue, isDirectory: true, relativeTo: DiskManager.documentsDirectory)
-        }
-
-        fileprivate func create() -> Bool {
-            return DiskManager.create(directory: url)
-        }
-
-        var content: [URL]? {
-            do {
-                return try LocalDirectory.fm.contentsOfDirectory(at: url, includingPropertiesForKeys: nil, options: [])
-            } catch {
-                print("[LocalDirectory] Could not read directory \(self.rawValue): \(error)")
-                return nil
-            }
-        }
-    }
-
-    /// The folder where images and name list are stored
-    static let documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
-
-    private static let fm = FileManager.default
-
-    // MARK: - First launch
-
-    @discardableResult static func setupOnFirstLaunch() -> Bool {
-        return LocalDirectory.files.create() &&
-            LocalDirectory.images.create() &&
-            LocalDirectory.thumbnails.create() &&
-            LocalDirectory.upload.create()
-    }
-
-    private static func create(directory: URL) -> Bool {
-         do {
-            if !fm.fileExists(atPath: directory.path) {
-                try fm.createDirectory(at: directory, withIntermediateDirectories: true, attributes: nil)
-            }
-            return true
-        } catch {
-            event("Could not create \(directory): \(error)")
-            return false
-        }
-    }
-
-    // MARK: - Image retrieval
-
-    /**
-     Check if an image exists for a cap
-     - parameter cap: The id of the cap
-     - returns: True, if an image exists
-     */
-    static func hasImage(for cap: Int) -> Bool {
-        let url = localUrl(for: cap)
-        return fm.fileExists(atPath: url.path)
-    }
-    
-    static func imageUrlForCap(_ id: Int) -> URL? {
-        let url = localUrl(for: id)
-        guard fm.fileExists(atPath: url.path) else {
-            return nil
-        }
-        return url
-    }
-
-    private static func localUrl(for cap: Int) -> URL {
-        return URL(fileURLWithPath: "\(cap).jpg", isDirectory: true, relativeTo: LocalDirectory.images.url)
-    }
-    
-    private static func thumbnailUrl(for cap: Int) -> URL {
-        return URL(fileURLWithPath: "\(cap).jpg", isDirectory: true, relativeTo: LocalDirectory.thumbnails.url)
-    }
-
-    /**
-     Get the image for a cap.
-     If the image exists on disk, it is returned.
-     If no image exists locally, then this function returns nil.
-     - parameter cap: The id of the cap
-     - returns: The image data, or `nil`
-     */
-    static func image(for cap: Int) -> Data? {
-        // If the image exists on disk, get it
-        let url = localUrl(for: cap)
-        return readData(from: url)
-    }
-    
-    /**
-     Get the thumbnail for a cap.
-     If the image exists on disk, it is returned.
-     If no image exists locally, then this function returns nil.
-     - parameter cap: The id of the cap
-     - returns: The image data, or `nil`
-     */
-    static func thumbnail(for cap: Int) -> Data? {
-        // If the image exists on disk, get it
-        let url = thumbnailUrl(for: cap)
-        return readData(from: url)
-    }
-    
-    private static func readData(from url: URL) -> Data? {
-        guard fm.fileExists(atPath: url.path) else {
-            return nil
-        }
-        do {
-            return try Data(contentsOf: url)
-        } catch {
-            self.error("Could not read data from \(url): \(error)")
-            return nil
-        }
-    }
-    
-    /**
-     Save an image to the download folder
-     - parameter imageData: The data of the image
-     - parameter cap: The cap id
-     - returns: True, if the image was saved
-     */
-    static func save(imageData: Data, for cap: Int) -> Bool {
-        let url = localUrl(for: cap)
-        return write(imageData, to: url)
-    }
-    
-    /**
-     Save a thumbnail to the download folder
-     - parameter thumbnailData: The data of the image
-     - parameter cap: The cap id
-     - returns: True, if the image was saved
-     */
-    static func save(thumbnailData: Data, for cap: Int) -> Bool {
-        let url = thumbnailUrl(for: cap)
-        return write(thumbnailData, to: url)
-    }
-
-    private static func write(_ data: Data, to url: URL) -> Bool {
-        do {
-            try data.write(to: url)
-        } catch {
-            self.error("Could not write data to \(url): \(error)")
-            return false
-        }
-        return true
-    }
-
-    static func removeFromUpload(url: URL) -> Bool {
-        guard fm.fileExists(atPath: url.path) else {
-            return true
-        }
-        do {
-            try fm.removeItem(at: url)
-            return true
-        } catch {
-            self.error("Could not delete file \(url.path)")
-            return false
-        }
-    }
-
-    static var pendingUploads: [URL]? {
-        return LocalDirectory.upload.content
-    }
-
-    static var availableImages: [Int]? {
-        return LocalDirectory.images.content?.compactMap {
-            Int($0.lastPathComponent.components(separatedBy: ".").first ?? "")
-        }
-    }
-
-    /**
-     Save an image to the uploads folder for later
-     */
-    static func saveForUpload(imageData: Data, name: String) -> URL?  {
-        let url = LocalDirectory.upload.url.appendingPathComponent(name)
-        return write(imageData, to: url) ? url : nil
-    }
-}
-
-extension DiskManager: Logger {
-
-    static let logToken = "[DiskManager]"
-}

CapCollector/Data/Download.swift

@@ -0,0 +1,328 @@
+//
+//  Download.swift
+//  CapCollector
+//
+//  Created by Christoph on 26.04.20.
+//  Copyright © 2020 CH. All rights reserved.
+//
+
+import Foundation
+import UIKit
+
+final class Download {
+    
+    let serverUrl: URL
+    
+    let session: URLSession
+    
+    let delegate: Delegate
+    
+    private var downloadingMainImages = Set<Int>()
+ 
+    init(server: URL) {
+        let delegate = Delegate()
+        
+        self.serverUrl = server
+        self.session = URLSession(configuration: .default, delegate: delegate, delegateQueue: nil)
+        self.delegate = delegate
+    }
+    
+    // MARK: Paths
+    
+    private static func serverDatabaseUrl(server: URL) -> URL {
+        server.appendingPathComponent("db.sqlite3")
+    }
+    
+    var serverDatabaseUrl: URL {
+        Download.serverDatabaseUrl(server: serverUrl)
+    }
+
+    var serverImageUrl: URL {
+        serverUrl.appendingPathComponent("images")
+    }
+    
+    private func serverImageUrl(for cap: Int, version: Int = 0) -> URL {
+        serverImageUrl.appendingPathComponent(String(format: "%04d/%04d-%02d.jpg", cap, cap, version))
+    }
+    
+    private func serverImageCountUrl(for cap: Int) -> URL {
+        serverUrl.appendingPathComponent("count/\(cap)")
+    }
+    
+    private var serverClassifierVersionUrl: URL {
+        serverUrl.appendingPathComponent("classifier.version")
+    }
+    
+    private var serverAllCountsUrl: URL {
+        serverUrl.appendingPathComponent("count/all")
+    }
+    
+    var serverRecognitionModelUrl: URL {
+        serverUrl.appendingPathComponent("classifier.mlmodel")
+    }
+    
+    // MARK: Delegate
+    
+    final class Delegate: NSObject, URLSessionDownloadDelegate {
+        
+        typealias ProgressHandler = (_ progress: Float, _ bytesWritten: Int64, _ totalBytes: Int64) -> Void
+        
+        typealias CompletionHandler = (_ url: URL?) -> Void
+        
+        private var progress = [URLSessionDownloadTask : Float]()
+        
+        private var callbacks = [URLSessionDownloadTask : ProgressHandler]()
+        
+        private var completions = [URLSessionDownloadTask : CompletionHandler]()
+        
+        func registerForProgress(_ downloadTask: URLSessionDownloadTask, callback: ProgressHandler?, completion: @escaping CompletionHandler) {
+            progress[downloadTask] = 0
+            callbacks[downloadTask] = callback
+            completions[downloadTask] = completion
+        }
+        
+        func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL) {
+            completions[downloadTask]?(location)
+            callbacks[downloadTask] = nil
+            progress[downloadTask] = nil
+            completions[downloadTask] = nil
+        }
+        
+        func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didWriteData bytesWritten: Int64, totalBytesWritten: Int64, totalBytesExpectedToWrite: Int64) {
+            let ratio = totalBytesExpectedToWrite > 0 ? Float(totalBytesWritten) / Float(totalBytesExpectedToWrite) : 0
+            progress[downloadTask] = ratio
+            callbacks[downloadTask]?(ratio, totalBytesWritten, totalBytesExpectedToWrite)
+        }
+        
+        func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
+            guard let downloadTask = task as? URLSessionDownloadTask else {
+                return
+            }
+            completions[downloadTask]?(nil)
+            callbacks[downloadTask] = nil
+            progress[downloadTask] = nil
+            completions[downloadTask] = nil
+        }
+    }
+    
+    // MARK: Downloading data
+    
+    /**
+     Download an image for a cap.
+     - Parameter cap: The id of the cap.
+     - Parameter version: The image version to download.
+     - Parameter completion: A closure with the resulting image
+     - Note: The closure will be called from the main queue.
+     - Returns: `true`, of the file download was started, `false`, if the image is already downloading.
+     */
+    @discardableResult
+    func mainImage(for cap: Int, completion: ((_ image: UIImage?) -> Void)?) -> Bool {
+        let url = serverImageUrl(for: cap)
+        let query = "Main image of cap \(cap)"
+        guard !downloadingMainImages.contains(cap) else {
+            return false
+        }
+        downloadingMainImages.insert(cap)
+        
+        let task = session.downloadTask(with: url) { fileUrl, response, error in
+            self.downloadingMainImages.remove(cap)
+            guard let fileUrl = self.convertResponse(to: query, fileUrl, response, error) else {
+                DispatchQueue.main.async {
+                    completion?(nil)
+                }
+                return
+            }
+            guard app.storage.saveImage(at: fileUrl, for: cap) else {
+                self.log("Request '\(query)' could not move downloaded file")
+                DispatchQueue.main.async {
+                    completion?(nil)
+                }
+                return
+            }
+            DispatchQueue.main.async {
+                guard let image = app.storage.image(for: cap) else {
+                    self.log("Request '\(query)' received an invalid image")
+                    completion?(nil)
+                    return
+                }
+                completion?(image)
+            }
+        }
+        task.resume()
+        return true
+    }
+    
+    /**
+     Download an image for a cap.
+     - Parameter cap: The id of the cap.
+     - Parameter version: The image version to download.
+     - Parameter completion: A closure with the resulting image
+     - Note: The closure will be called from the main queue.
+     - Returns: `true`, of the file download was started, `false`, if the image is already downloading.
+     */
+    @discardableResult
+    func image(for cap: Int, version: Int, completion: @escaping (_ image: UIImage?) -> Void) -> Bool {
+        let url = serverImageUrl(for: cap, version: version)
+        let query = "Image of cap \(cap) version \(version)"
+        let task = session.downloadTask(with: url) { fileUrl, response, error in
+            guard let fileUrl = self.convertResponse(to: query, fileUrl, response, error) else {
+                DispatchQueue.main.async {
+                    completion(nil)
+                }
+                return
+            }
+            guard app.storage.saveImage(at: fileUrl, for: cap, version: version) else {
+                self.log("Request '\(query)' could not move downloaded file")
+                DispatchQueue.main.async {
+                    completion(nil)
+                }
+                return
+            }
+            DispatchQueue.main.async {
+                guard let image = app.storage.image(for: cap, version: version) else {
+                    self.log("Request '\(query)' received an invalid image")
+                    completion(nil)
+                    return
+                }
+                completion(image)
+            }
+        }
+        task.resume()
+        return true
+    }
+    
+    func imageCount(for cap: Int, completion: @escaping (_ count: Int?) -> Void) {
+        let url = serverImageCountUrl(for: cap)
+        let query = "Image count for cap \(cap)"
+        let task = session.dataTask(with: url) { data, response, error in
+            let int = self.convertIntResponse(to: query, data, response, error)
+            completion(int)
+        }
+        task.resume()
+    }
+    
+    func imageCounts(completion: @escaping ([(cap: Int, count: Int)]?) -> Void) {
+        let url = serverAllCountsUrl
+        let query = "Image count of all caps"
+        let task = session.dataTask(with: url) { data, response, error in
+            guard let string = self.convertStringResponse(to: query, data, response, error) else {
+                completion(nil)
+                return
+            }
+            
+            // Convert the encoded string into (id, count) pairs
+            let parts = string.components(separatedBy: ";")
+            let array: [(cap: Int, count: Int)] = parts.compactMap { s in
+                let p = s.components(separatedBy: "#")
+                guard p.count == 2, let cap = Int(p[0]), let count = Int(p[1]) else {
+                    return nil
+                }
+                return (cap, count)
+            }
+            completion(array)
+        }
+        task.resume()
+    }
+    
+    func databaseSize(completion: @escaping (_ size: Int64?) -> Void) {
+        size(of: "database size", to: serverDatabaseUrl, completion: completion)
+    }
+    func database(progress: Delegate.ProgressHandler? = nil, completion: @escaping (URL?) -> Void) {
+        //let query = "Download of server database"
+        let task = session.downloadTask(with: serverDatabaseUrl)
+        delegate.registerForProgress(task, callback: progress) {url in
+            self.log("Database download complete")
+            completion(url)
+        }
+        task.resume()
+    }
+    
+    
+    func classifierVersion(completion: @escaping (Int?) -> Void) {
+        let query = "Server classifier version"
+        let task = session.dataTask(with: serverClassifierVersionUrl) { data, response, error in
+            let int = self.convertIntResponse(to: query, data, response, error)
+            completion(int)
+        }
+        task.resume()
+    }
+    
+    func classifierSize(completion: @escaping (Int64?) -> Void) {
+        size(of: "classifier size", to: serverRecognitionModelUrl, completion: completion)
+    }
+    
+    func classifier(progress: Delegate.ProgressHandler? = nil, completion: @escaping (URL?) -> Void) {
+        let task = session.downloadTask(with: serverRecognitionModelUrl)
+        delegate.registerForProgress(task, callback: progress) { url in
+            self.log("Classifier download complete")
+            completion(url)
+        }
+        task.resume()
+    }
+    
+    // MARK: Requests
+    
+    private func size(of query: String, to url: URL, completion: @escaping (_ size: Int64?) -> Void) {
+        var request = URLRequest(url: url)
+        request.httpMethod = "HEAD"
+        let task = session.dataTask(with: request)  { _, response, _ in
+            guard let r = response else {
+                self.log("Request '\(query)' received no response")
+                completion(nil)
+                return
+            }
+            completion(r.expectedContentLength)
+        }
+        task.resume()
+    }
+    
+    private func convertIntResponse(to query: String, _ data: Data?, _ response: URLResponse?, _ error: Error?) -> Int? {
+        guard let string = self.convertStringResponse(to: query, data, response, error) else {
+            return nil
+        }
+        guard let int = Int(string.trimmingCharacters(in: .whitespacesAndNewlines)) else {
+            self.log("Request '\(query)' received an invalid value '\(string)'")
+            return nil
+        }
+        return int
+    }
+    
+    private func convertStringResponse(to query: String, _ data: Data?, _ response: URLResponse?, _ error: Error?) -> String? {
+        guard let data = self.convertResponse(to: query, data, response, error) else {
+            return nil
+        }
+        guard let string = String(data: data, encoding: .utf8) else {
+            self.log("Request '\(query)' received invalid data (not a string)")
+            return nil
+        }
+        return string
+    }
+    
+    private func convertResponse<T>(to query: String, _ result: T?, _ response: URLResponse?, _ error: Error?) -> T? {
+        if let error = error {
+            log("Request '\(query)' produced an error: \(error)")
+            return nil
+        }
+        guard let response = response else {
+            log("Request '\(query)' received no response")
+            return nil
+        }
+        guard let urlResponse = response as? HTTPURLResponse else {
+            log("Request '\(query)' received an invalid response: \(response)")
+            return nil
+        }
+        guard urlResponse.statusCode == 200 else {
+            log("Request '\(query)' failed with status code \(urlResponse.statusCode)")
+            return nil
+        }
+        guard let r = result else {
+            log("Request '\(query)' received no item")
+            return nil
+        }
+        return r
+    }
+    
+    
+}
+
+extension Download: Logger { }

CapCollector/Data/NameFile.swift

@@ -1,145 +0,0 @@
-//
-//  NameFile.swift
-//  CapFinder
-//
-//  Created by User on 23.04.18.
-//  Copyright © 2018 User. All rights reserved.
-//
-
-import Foundation
-import SwiftyDropbox
-
-final class NameFile: Logger {
-
-    static let logToken = "[NameFile]"
-
-    /// The name of the file
-    private static let fileName = "names.txt"
-    
-    private static let path = "/" + fileName
-    
-    /// The url of the file on disk
-    private static let url = DiskManager.documentsDirectory.appendingPathComponent(fileName)
-
-    private static let fm = FileManager.default
-
-    // MARK: - Reading from disk
-
-    /// Indicates if the name list was written to disk
-    private static var nameFileExistsOnDisk: Bool {
-        return fm.fileExists(atPath: url.path)
-    }
-    
-    // MARK: - Public API
-
-    @discardableResult static func save(names: String) -> Bool {
-        let data = names.data(using: .utf8)!
-        return save(names: data)
-    }
-    
-    static func saveAndUpload(names: String, completion: @escaping (Bool) -> Void) {
-        let data = names.data(using: .utf8)!
-        guard save(names: data) else {
-            return
-        }
-        
-        let client = DropboxController.client
-        client.files.upload(path: path, mode: .overwrite, input: data).response { _ , error in
-            if let error = error {
-                self.error("Error uploading name list: \(error)")
-                completion(false)
-            } else {
-                self.event("Uploaded name list")
-                completion(true)
-            }
-        }
-    }
-    
-    // MARK: - Private
-    
-    /// The content of the name file as a String
-    private static var content: String? {
-        do {
-            return try String(contentsOf: url, encoding: .utf8)
-        } catch {
-            self.error("Error reading \(url): \(error)")
-            return nil
-        }
-    }
-    
-    /**
-     Save the name file to disk
-     - parameter names: The new name file content
-     - returns: True, if the data was written to disk
-     */
-    @discardableResult private static func save(names: Data) -> Bool {
-        do {
-            try names.write(to: url, options: .atomic)
-            event("Name file saved to disk")
-            return true
-        } catch {
-            self.error("Could not save names to file: \(error)")
-            return false
-        }
-    }
-    
-    
-    static func makeAvailable(completion: ((String?) -> Void)? = nil) {
-        if nameFileExistsOnDisk {
-            completion?(self.content)
-        } else {
-            download() { success in
-                guard success else {
-                    completion?(nil)
-                    return
-                }
-                completion?(self.content)
-            }
-        }
-    }
-    
-    /// The data of the name list
-    private static var data: Data? {
-        guard nameFileExistsOnDisk else { return nil }
-        do {
-            return try Data(contentsOf: url)
-        } catch {
-            self.error("Could not read data from \(url): \(error)")
-            return nil
-        }
-    }
-    
-    /**
-     Delete the file on disk
-     - returns: True, if the file no longer exists on disk
-     */
-    @discardableResult private static func delete() -> Bool {
-        guard nameFileExistsOnDisk else {
-            event("No name file to delete")
-            return true
-        }
-
-        do {
-            try fm.removeItem(at: url)
-        } catch {
-            self.error("Could not delete name file: \(error)")
-            return false
-        }
-        event("Deleted name file on disk")
-        return true
-    }
-    
-    private static func download(completion: ((Bool) -> Void)? = nil) {
-        let client = DropboxController.client
-        event("Downloading names from Dropbox")
-        client.files.download(path: path).response { response, error in
-            guard let data = response?.1 else {
-                self.error("Error downloading file: \(error!)")
-                completion?(false)
-                return
-            }
-            self.event("Downloaded name file")
-            completion?(NameFile.save(names: data))
-        }
-    }
-}

CapCollector/Data/ServerDatabase.swift

@@ -0,0 +1,47 @@
+//
+//  ServerDatabase.swift
+//  CapCollector
+//
+//  Created by Christoph on 27.04.20.
+//  Copyright © 2020 CH. All rights reserved.
+//
+
+import Foundation
+import SQLite
+
+final class ServerDatabase {
+    
+    let db: Connection
+    
+    var table: Table {
+        Table("caps")
+    }
+    
+    let rowId = Expression<Int>("id")
+    
+    let rowName = Expression<String>("name")
+    
+    let rowCount = Expression<Int>("count")
+    
+    init?(downloadedTo url: URL) {
+        guard let db = try? Connection(url.path) else {
+            return nil
+        }
+        self.db = db
+        log("Server database loaded with \(capCount) caps")
+    }
+    
+    /// The number of caps currently in the database
+    var capCount: Int {
+        (try? db.scalar(table.count)) ?? 0
+    }
+    
+    var caps: [(id: Int, count: Int, name: String)] {
+        guard let rows = try? db.prepare(table) else {
+            return []
+        }
+        return rows.map { ($0[rowId], $0[rowCount], $0[rowName]) }
+    }
+}
+
+extension ServerDatabase: Logger { }

CapCollector/Data/Storage.swift

@@ -0,0 +1,321 @@
+//
+//  DiskManager.swift
+//  CapFinder
+//
+//  Created by User on 23.04.18.
+//  Copyright © 2018 User. All rights reserved.
+//
+
+import Foundation
+import UIKit
+import CoreML
+import Vision
+
+final class Storage {
+    
+    // MARK: Paths
+    
+    let fm = FileManager.default
+    
+    let baseUrl: URL
+    
+    // MARK: INIT
+    
+    init(in folder: URL) {
+        self.baseUrl = folder
+    }
+    
+    // MARK: File/folder urls
+    
+    var dbUrl: URL {
+        baseUrl.appendingPathComponent("db.sqlite3")
+    }
+    
+    var modelUrl: URL {
+        baseUrl.appendingPathComponent("model.mlmodel")
+    }
+    
+    private func localImageUrl(for cap: Int, version: Int) -> URL {
+        baseUrl.appendingPathComponent("\(cap)-\(version).jpg")
+    }
+    
+    private func thumbnailUrl(for cap: Int) -> URL {
+        baseUrl.appendingPathComponent("\(cap)-thumb.jpg")
+    }
+    
+    // MARK: Storage
+    
+    /**
+     Save an image to disk
+     - parameter url: The url where the downloaded image is stored
+     - parameter cap: The cap id
+     - parameter version: The version of the image to get
+     - returns: True, if the image was saved
+    */
+    func saveImage(at url: URL, for cap: Int, version: Int = 0) -> Bool {
+        let targetUrl = localImageUrl(for: cap, version: version)
+        do {
+            if fm.fileExists(atPath: targetUrl.path) {
+                try fm.removeItem(at: targetUrl)
+            }
+            try fm.moveItem(at: url, to: targetUrl)
+            return true
+        } catch {
+            log("Failed to delete or move image \(version) for cap \(cap)")
+            return false
+        }
+    }
+    
+    /**
+     Save an image to disk
+     - parameter image: The image
+     - parameter cap: The cap id
+     - parameter version: The version of the image
+     - returns: True, if the image was saved
+    */
+    func save(image: UIImage, for cap: Int, version: Int = 0) -> Bool {
+        guard let data = image.jpegData(compressionQuality: Cap.jpgQuality) else {
+            return false
+        }
+        return save(imageData: data, for: cap, version: version)
+    }
+    
+    /**
+     Save image data to disk
+     - parameter image: The data of the image
+     - parameter cap: The cap id
+     - parameter version: The version of the image
+     - returns: True, if the image was saved
+    */
+    func save(imageData: Data, for cap: Int, version: Int = 0) -> Bool {
+        write(imageData, to: localImageUrl(for: cap, version: version))
+    }
+    
+    /**
+     Save a thumbnail.
+     - parameter thumbnail: The image
+     - parameter cap: The cap id
+     - returns: True, if the image was saved
+     */
+    func save(thumbnail: UIImage, for cap: Int) -> Bool {
+        guard let data = thumbnail.jpegData(compressionQuality: Cap.jpgQuality) else {
+            return false
+        }
+        return save(thumbnailData: data, for: cap)
+    }
+    
+    /**
+     Save a thumbnail to the download folder
+     - parameter thumbnailData: The data of the image
+     - parameter cap: The cap id
+     - returns: True, if the image was saved
+     */
+    func save(thumbnailData: Data, for cap: Int) -> Bool {
+        write(thumbnailData, to: thumbnailUrl(for: cap))
+    }
+    
+    /**
+     Save the downloaded and compiled recognition model.
+     - Parameter url: The temporary location to which the model was compiled.
+     - Returns: `true`, if the model was moved.
+     */
+    func save(recognitionModelAt url: URL) -> Bool {
+        move(url, to: modelUrl)
+    }
+    
+    /**
+    Save the downloaded and database.
+    - Parameter url: The temporary location to which the database was downloaded.
+    - Returns: `true`, if the database was moved.
+    */
+    func save(databaseAt url: URL) -> Bool {
+        move(url, to: dbUrl)
+    }
+    
+    private func move(_ url: URL, to destination: URL) -> Bool {
+        if fm.fileExists(atPath: destination.path) {
+            do {
+                try fm.removeItem(at: destination)
+            } catch {
+                log("Failed to remove file \(destination.lastPathComponent) before writing new version: \(error)")
+                return false
+            }
+        }
+        do {
+            try fm.moveItem(at: url, to: destination)
+            return true
+        } catch {
+            self.error("Failed to move file \(destination.lastPathComponent) to permanent location: \(error)")
+            return false
+        }
+    }
+
+    private func write(_ data: Data, to url: URL) -> Bool {
+        do {
+            try data.write(to: url)
+        } catch {
+            self.error("Could not write data to \(url): \(error)")
+            return false
+        }
+        return true
+    }
+    
+    // MARK: Status
+    
+    /**
+     Check if an image exists for a cap
+     - parameter cap: The id of the cap
+     - returns: True, if an image exists
+     */
+    func hasImage(for cap: Int) -> Bool {
+        fm.fileExists(atPath: localImageUrl(for: cap, version: 0).path)
+    }
+    
+    func existingImageUrl(for cap: Int, version: Int = 0) -> URL? {
+        let url = localImageUrl(for: cap, version: version)
+        return fm.fileExists(atPath: url.path) ? url : nil
+    }
+    
+    // MARK: Retrieval
+    
+    /**
+     Get the image data for a cap.
+     If the image exists on disk, it is returned.
+     If no image exists locally, then this function returns nil.
+     - parameter cap: The id of the cap
+     - parameter version: The image version
+     - returns: The image data, or `nil`
+     */
+    func imageData(for cap: Int, version: Int = 0) -> Data? {
+        readData(from: localImageUrl(for: cap, version: version))
+    }
+    
+    /**
+     Get the image for a cap.
+     If the image exists on disk, it is returned.
+     If no image exists locally, then this function returns nil.
+     - parameter cap: The id of the cap
+     - parameter version: The image version
+     - returns: The image, or `nil`
+     - note: Removes invalid image data on disk, if the data is not a valid image
+     - note: Must be called on the main thread
+     */
+    func image(for cap: Int, version: Int = 0) -> UIImage? {
+        guard let data = imageData(for: cap, version: version) else {
+            return nil
+        }
+        guard let image = UIImage(data: data) else {
+            log("Removing invalid image \(version) of cap \(cap) from disk")
+            deleteImage(for: cap, version: version)
+            return nil
+        }
+        return image
+    }
+    
+    /**
+     Get the image for a cap.
+     If the image exists on disk, it is returned.
+     If no image exists locally, then this function returns nil.
+     - parameter cap: The id of the cap
+     - parameter version: The image version
+     - returns: The image, or `nil`
+     */
+    func ciImage(for cap: Int, version: Int = 0) -> CIImage? {
+        guard let url = existingImageUrl(for: cap, version: version) else {
+            return nil
+        }
+        return CIImage(contentsOf: url)
+    }
+    
+    /**
+     Get the thumbnail data for a cap.
+     If the image exists on disk, it is returned.
+     If no image exists locally, then this function returns nil.
+     - parameter cap: The id of the cap
+     - returns: The image data, or `nil`
+     */
+    func thumbnailData(for cap: Int) -> Data? {
+        readData(from: thumbnailUrl(for: cap))
+    }
+    
+    /**
+     Get the thumbnail for a cap.
+     If the image exists on disk, it is returned.
+     If no image exists locally, then this function returns nil.
+     - parameter cap: The id of the cap
+     - returns: The image, or `nil`
+     */
+    func thumbnail(for cap: Int) -> UIImage? {
+        guard let data = thumbnailData(for: cap) else {
+            return nil
+        }
+        return UIImage(data: data)
+    }
+    
+    /// The compiled recognition model on disk
+    var recognitionModel: VNCoreMLModel? {
+        guard fm.fileExists(atPath: modelUrl.path) else {
+            log("No recognition model to load")
+            return nil
+        }
+        do {
+            let model = try MLModel(contentsOf: modelUrl)
+            
+            return try VNCoreMLModel(for: model)
+        } catch {
+            self.error("Failed to load recognition model: \(error)")
+            return nil
+        }
+    }
+    
+    func averageColor(for cap: Int, version: Int = 0) -> UIColor? {
+        guard let inputImage = ciImage(for: cap, version: version) else {
+            error("Failed to read CIImage for main image of cap \(cap)")
+            return nil
+        }
+        return inputImage.averageColor
+    }
+    
+    
+    private func readData(from url: URL) -> Data? {
+        guard fm.fileExists(atPath: url.path) else {
+            return nil
+        }
+        do {
+            return try Data(contentsOf: url)
+        } catch {
+            self.error("Could not read data from \(url): \(error)")
+            return nil
+        }
+    }
+    
+    // MARK: Deleting data
+    
+    @discardableResult
+    func deleteDatabase() -> Bool {
+        do {
+            try fm.removeItem(at: dbUrl)
+            return true
+        } catch {
+            log("Failed to delete database: \(error)")
+            return false
+        }
+    }
+    
+    @discardableResult
+    func deleteImage(for cap: Int, version: Int) -> Bool {
+        guard let url = existingImageUrl(for: cap, version: version) else {
+            return true
+        }
+        do {
+            try fm.removeItem(at: url)
+            return true
+        } catch {
+            log("Failed to delete image \(version) for cap \(cap): \(error)")
+            return false
+        }
+    }
+}
+
+extension Storage: Logger { }
+

CapCollector/Data/Upload.swift

@@ -0,0 +1,180 @@
+//
+//  Upload.swift
+//  CapCollector
+//
+//  Created by Christoph on 26.04.20.
+//  Copyright © 2020 CH. All rights reserved.
+//
+
+import Foundation
+import UIKit
+import SQLite
+
+struct Upload {
+    
+    let serverUrl: URL
+       
+    let table = Table("uploads")
+    
+    let rowCapId = Expression<Int>("cap")
+    
+    let rowCapVersion = Expression<Int>("version")
+    
+    init(server: URL) {
+        self.serverUrl = server
+    }
+    
+    // MARK: Paths
+    
+    var serverImageUrl: URL {
+        serverUrl.appendingPathComponent("images")
+    }
+    
+    private func serverImageUrl(for cap: Int, version: Int = 0) -> URL {
+        serverImageUrl.appendingPathComponent("\(cap)/\(cap)-\(version).jpg")
+    }
+    
+    private func serverImageUploadUrl(for cap: Int) -> URL {
+        serverImageUrl.appendingPathComponent("\(cap)")
+    }
+    
+    private func serverNameUploadUrl(for cap: Int) -> URL {
+        serverUrl.appendingPathComponent("name/\(cap)")
+    }
+    
+    private func serverChangeMainImageUrl(for cap: Int, to newValue: Int) -> URL {
+        serverUrl.appendingPathComponent("switch/\(cap)/\(newValue)")
+    }
+    
+    // MARK: SQLite
+    
+    var createQuery: String {
+        table.create(ifNotExists: true) { t in
+            t.column(rowCapId)
+            t.column(rowCapVersion)
+        }
+    }
+    
+    func insertQuery(for cap: Int, version: Int) -> Insert {
+        table.insert(rowCapId <- cap, rowCapVersion <- version)
+    }
+    
+    func deleteQuery(for cap: Int, version: Int) -> Delete {
+        table.filter(rowCapId == cap && rowCapVersion == version).delete()
+    }
+    
+    // MARK: Uploading data
+    
+    func upload(name: String, for cap: Int, completion: @escaping (_ success: Bool) -> Void) {
+        var request = URLRequest(url: serverNameUploadUrl(for: cap))
+        request.httpMethod = "POST"
+        request.httpBody = name.data(using: .utf8)
+        let task = URLSession.shared.dataTask(with: request) { data, response, error in
+            if let error = error {
+                self.log("Failed to upload name of cap \(cap): \(error)")
+                completion(false)
+                return
+            }
+            guard let response = response else {
+                self.log("Failed to upload name of cap \(cap): No response")
+                completion(false)
+                return
+            }
+            guard let urlResponse = response as? HTTPURLResponse else {
+                self.log("Failed to upload name of cap \(cap): \(response)")
+                completion(false)
+                return
+            }
+            guard urlResponse.statusCode == 200 else {
+                self.log("Failed to upload name of cap \(cap): Response \(urlResponse.statusCode)")
+                completion(false)
+                return
+            }
+        }
+        task.resume()
+    }
+    
+    func uploadImage(for cap: Int, version: Int, completion: @escaping (_ count: Int?) -> Void) {
+        guard let url = app.storage.existingImageUrl(for: cap, version: version) else {
+            completion(nil)
+            return
+        }
+        var request = URLRequest(url: serverImageUploadUrl(for: cap))
+        request.httpMethod = "POST"
+        let task = URLSession.shared.uploadTask(with: request, fromFile: url) { data, response, error in
+            if let error = error {
+                self.log("Failed to upload image \(version) of cap \(cap): \(error)")
+                completion(nil)
+                return
+            }
+            guard let response = response else {
+                self.log("Failed to upload image \(version) of cap \(cap): No response")
+                completion(nil)
+                return
+            }
+            guard let urlResponse = response as? HTTPURLResponse else {
+                self.log("Failed to upload image \(version) of cap \(cap): \(response)")
+                completion(nil)
+                return
+            }
+            guard urlResponse.statusCode == 200 else {
+                self.log("Failed to upload image \(version) of cap \(cap): Response \(urlResponse.statusCode)")
+                completion(nil)
+                return
+            }
+            guard let d = data, let string = String(data: d, encoding: .utf8), let int = Int(string) else {
+                self.log("Failed to upload image \(version) of cap \(cap): Invalid response")
+                completion(nil)
+                return
+            }
+            completion(int)
+        }
+        task.resume()
+    }
+    
+    /**
+     Sets the main image for a cap to a different version.
+     - Parameter cap: The id of the cap
+     - Parameter version: The version to set as the main version.
+     - Parameter completion: A callback with the new average color on completion.
+     */
+    func setMainImage(for cap: Int, to version: Int, completion: @escaping (_ averageColor: UIColor?) -> Void) {
+        guard let averageColor = app.storage.averageColor(for: cap, version: version) else {
+            completion(nil)
+            return
+        }
+        let url = serverChangeMainImageUrl(for: cap, to: version)
+        var request = URLRequest(url: url)
+        let averageRGB = averageColor.rgb
+        request.addValue("\(averageRGB.red)", forHTTPHeaderField: "r")
+        request.addValue("\(averageRGB.green)", forHTTPHeaderField: "g")
+        request.addValue("\(averageRGB.blue)", forHTTPHeaderField: "b")
+        let task = URLSession.shared.dataTask(with: request) { data, response, error in
+            if let error = error {
+                self.log("Failed to set main image of cap \(cap) to \(version): \(error)")
+                completion(nil)
+                return
+            }
+            guard let response = response else {
+                self.log("Failed to set main image of cap \(cap) to \(version): No response")
+                completion(nil)
+                return
+            }
+            guard let urlResponse = response as? HTTPURLResponse else {
+                self.log("Failed to set main image of cap \(cap) to \(version): \(response)")
+                completion(nil)
+                return
+            }
+            guard urlResponse.statusCode == 200 else {
+                self.log("Failed to set main image of cap \(cap) to \(version): Response \(urlResponse.statusCode)")
+                completion(nil)
+                return
+            }
+            
+            completion(averageColor)
+        }
+        task.resume()
+    }
+}
+
+extension Upload: Logger { }

CapCollector/Data/UserDefaults.swift

@@ -1,67 +0,0 @@
-//
-//  UserDefaults.swift
-//  CapCollector
-//
-//  Created by Christoph on 16.10.18.
-//  Copyright © 2018 CH. All rights reserved.
-//
-
-import Foundation
-
-final class Persistence {
-    
-    static var recognizedCapCount: Int {
-        get {
-            return UserDefaults.standard.integer(forKey: "recognizedCaps")
-        }
-        set {
-            UserDefaults.standard.set(newValue, forKey: "recognizedCaps")
-        }
-    }
-
-    static var newImageCount: Int {
-        get {
-            return UserDefaults.standard.integer(forKey: "newImages")
-        }
-        set {
-            UserDefaults.standard.set(newValue, forKey: "newImages")
-        }
-    }
-    
-    static var lastUploadedCapCount: Int {
-        get {
-            return UserDefaults.standard.integer(forKey: "lastUploadedCaps")
-        }
-        set {
-            UserDefaults.standard.set(newValue, forKey: "lastUploadedCaps")
-        }
-    }
-    
-    static var lastUploadedImageCount: Int {
-        get {
-            return UserDefaults.standard.integer(forKey: "lastUploadedImages")
-        }
-        set {
-            UserDefaults.standard.set(newValue, forKey: "lastUploadedImages")
-        }
-    }
-    
-    static var useMobileNet: Bool {
-        get {
-            return UserDefaults.standard.bool(forKey: "mobileNet")
-        }
-        
-        set {
-            UserDefaults.standard.set(newValue, forKey: "mobileNet")
-        }
-    }
-    
-    static var folderNotCreated: [Int] {
-        get {
-            return UserDefaults.standard.array(forKey: "folders") as? [Int] ?? []
-        }
-        set {
-            UserDefaults.standard.set(newValue, forKey: "folders")
-        }
-    }
-}

CapCollector/Extensions/Array+Extensions.swift

@@ -0,0 +1,30 @@
+//
+//  Array+Extensions.swift
+//  CapCollector
+//
+//  Created by Christoph on 12.05.20.
+//  Copyright © 2020 CH. All rights reserved.
+//
+
+import Foundation
+
+extension Array {
+    
+    func split(intoPartsOf maxElements: Int) -> [ArraySlice<Element>] {
+        guard !isEmpty, maxElements > 0 else {
+            return []
+        }
+        var result = [ArraySlice<Element>]()
+        var currentIndex = 0
+        while true {
+            let nextIndex = currentIndex + maxElements
+            if nextIndex >= count {
+                result.append(self[currentIndex..<count])
+                return result
+            }
+            result.append(self[currentIndex..<nextIndex])
+            currentIndex += maxElements
+        }
+        return result
+    }
+}

CapCollector/Extensions/CGImagePropertyOrientation+Extensions.swift

@@ -0,0 +1,33 @@
+//
+//  CGImagePropertyOrientation+Extensions.swift
+//  CapCollector
+//
+//  Created by Christoph on 13.05.20.
+//  Copyright © 2020 CH. All rights reserved.
+//
+
+import UIKit
+
+extension CGImagePropertyOrientation {
+    /**
+     Converts a `UIImageOrientation` to a corresponding
+     `CGImagePropertyOrientation`. The cases for each
+     orientation are represented by different raw values.
+
+     - Tag: ConvertOrientation
+     */
+    init(_ orientation: UIImage.Orientation) {
+        switch orientation {
+        case .up: self = .up
+        case .upMirrored: self = .upMirrored
+        case .down: self = .down
+        case .downMirrored: self = .downMirrored
+        case .left: self = .left
+        case .leftMirrored: self = .leftMirrored
+        case .right: self = .right
+        case .rightMirrored: self = .rightMirrored
+        @unknown default:
+            fatalError()
+        }
+    }
+}

CapCollector/Extensions/UIColor+Extensions.swift

@@ -0,0 +1,22 @@
+//
+//  UIColor+Extensions.swift
+//  CapCollector
+//
+//  Created by Christoph on 14.04.20.
+//  Copyright © 2020 CH. All rights reserved.
+//
+
+import UIKit
+
+extension UIColor {
+    
+    var rgb: (red: Int, green: Int, blue: Int) {
+        var fRed: CGFloat = 0
+        var fGreen: CGFloat = 0
+        var fBlue: CGFloat = 0
+        var fAlpha: CGFloat = 0
+        getRed(&fRed, green: &fGreen, blue: &fBlue, alpha: &fAlpha)
+        return (Int(fRed * 255.0), Int(fGreen * 255.0), Int(fBlue * 255.0))
+    }
+}
+

CapCollector/Extensions/UIImage+Extensions.swift

@@ -80,4 +80,48 @@ extension UIImage {
         UIImage(cgImage: cgImage, scale: 1, orientation: imageOrientation).draw(in: breadthRect)
         return UIGraphicsGetImageFromCurrentImageContext()
     }
+    
+    var averageColor: UIColor? {
+        let image = ciImage ?? CIImage(cgImage: cgImage!)
+        return image.averageColor
     }
+}
+
+extension CIImage {
+    
+    var averageColor: UIColor? {
+        let extentVector = CIVector(
+            x: extent.origin.x,
+            y: extent.origin.y,
+            z: extent.size.width,
+            w: extent.size.height)
+        
+        guard let filter = CIFilter(name: "CIAreaAverage", parameters: [kCIInputImageKey: self, kCIInputExtentKey: extentVector]) else {
+            log("Failed to create filter")
+            return nil
+        }
+        guard let outputImage = filter.outputImage else {
+            log("Failed get filter output")
+            return nil
+        }
+        
+        var bitmap = [UInt8](repeating: 0, count: 4)
+        let context = CIContext(options: [.workingColorSpace: kCFNull!])
+        context.render(outputImage, toBitmap: &bitmap, rowBytes: 4, bounds: CGRect(x: 0, y: 0, width: 1, height: 1), format: .RGBA8, colorSpace: nil)
+        
+        let color = UIColor(
+            red: saturate(bitmap[0]),
+            green: saturate(bitmap[1]),
+            blue: saturate(bitmap[2]),
+            alpha: CGFloat(bitmap[3]) / 255)
+        
+        return color
+    }
+}
+
+/// Map expected range 75-200 to 0-255
+private func saturate(_ component: UInt8) -> CGFloat {
+    return max(min(CGFloat(component) * 2 - 150, 255), 0) / 255
+}
+
+extension CIImage: Logger { }

CapCollector/Extensions/UINavigationItem+Extensions.swift

@@ -0,0 +1,31 @@
+//
+//  UINavigationItem+Extensions.swift
+//  CapCollector
+//
+//  Created by Christoph on 12.05.20.
+//  Copyright © 2020 CH. All rights reserved.
+//
+
+import UIKit
+
+extension UINavigationItem {
+
+    func setTitle(_ title: String, subtitle: String) {
+        let titleLabel = UILabel()
+        titleLabel.text = title
+        titleLabel.font = .systemFont(ofSize: 17.0)
+        titleLabel.textColor = .black
+
+        let subtitleLabel = UILabel()
+        subtitleLabel.text = subtitle
+        subtitleLabel.font = .systemFont(ofSize: 12.0)
+        subtitleLabel.textColor = .gray
+
+        let stackView = UIStackView(arrangedSubviews: [titleLabel, subtitleLabel])
+        stackView.distribution = .equalCentering
+        stackView.alignment = .center
+        stackView.axis = .vertical
+
+        self.titleView = stackView
+    }
+}

CapCollector/Extensions/UIViewExtensions.swift

@@ -16,4 +16,8 @@ extension UIView {
         subviews.forEach { subviews.append(contentsOf: $0.recursiveSubviews) }
         return subviews
     }
+    
+    func fromNib<T : UIView>() -> T {   // 2
+        return Bundle(for: type(of: self)).loadNibNamed(String(describing: type(of: self)), owner: self, options: nil)!.first! as! T
+    }
 }

CapCollector/Extensions/ViewControllerExtensions.swift

@@ -18,8 +18,8 @@ extension UIViewController {
         let alertController = UIAlertController(
             title: title,
             message: message,
-            preferredStyle: .alert,
-            blurStyle: .dark)
+            preferredStyle: .alert)//,
+            //blurStyle: .dark)
 
         alertController.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
 

CapCollector/Info.plist

@@ -17,7 +17,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.3</string>
+	<string>$(MARKETING_VERSION)</string>
 	<key>CFBundleURLTypes</key>
 	<array>
 		<dict>
@@ -67,7 +67,7 @@
 		<string>armv7</string>
 	</array>
 	<key>UIStatusBarStyle</key>
-	<string>UIStatusBarStyleLightContent</string>
+	<string>UIStatusBarStyleDefault</string>
 	<key>UISupportedInterfaceOrientations</key>
 	<array>
 		<string>UIInterfaceOrientationPortrait</string>

CapCollector/Logger.swift

@@ -10,26 +10,28 @@ import Foundation
 
 protocol Logger {
 
-    static var logToken: String { get }
-
 }
 
 extension Logger {
     
+    static var logToken: String {
+        "[" + String(describing: self) + "] "
+    }
+
     func error(_ message: String) {
         Self.addToFile(Self.logToken + "ERROR: " + message)
     }
 
-    func event(_ message: String) {
-        Self.addToFile(Self.logToken + " " + message)
+    func log(_ message: String) {
+        Self.addToFile(Self.logToken + message)
     }
 
     static func error(_ message: String) {
         addToFile(logToken + "ERROR: " + message)
     }
 
-    static func event(_ message: String) {
-        addToFile(logToken + " " + message)
+    static func log(_ message: String) {
+        addToFile(logToken + message)
     }
     
     private static func addToFile(_ message: String) {

CapCollector/Presentation/CapCell.swift

@@ -19,28 +19,30 @@ class CapCell: UITableViewCell {
 
     @IBOutlet weak var countLabel: UILabel!
 
-    var id = 0
+    var id: Int = 0
     
-    var cap: Cap! {
-        didSet {
-            updateCell()
+    func set(image: UIImage?) {
+        capImage.image = image ?? UIImage(named: "launch")
+    }
+    
+    func set(cap: Cap, match: Float?) {
+        id = cap.id
+        if let image = cap.image {
+            set(image: image)
+            
+        } else {
+            capImage.image = UIImage(named: "launch")
+            cap.downloadMainImage() { image in
+                self.set(image: image)
             }
         }
         
-    func updateCell() {
-        capImage.image = cap.image
         //capImage.borderColor = AppDelegate.tintColor
 
-        matchLabel.text = text(for: cap.match)
+        matchLabel.text = cap.matchDescription(match: match)
         nameLabel.text = cap.name
-        countLabel.text = "\(cap.id) (\(cap.count) image" + (cap.count > 1 ? "s)" : ")")
+        countLabel.text = cap.subtitle
     }
 
-    private func text(for value: Float?) -> String? {
-        guard let nr = value else {
-            return nil
-        }
-        let percent = Int((nr * 100).rounded())
-        return String(format: "%d %%", arguments: [percent])
-    }
+    
 }

CapCollector/Presentation/GridViewController.swift

@@ -10,8 +10,10 @@ import UIKit
 
 class GridViewController: UIViewController {
     
+    /// The number of caps horizontally.
     private let columns = 40
     
+    /// The number of hroizontal pixels for each cap.
     static let len: CGFloat = 60
     
     private lazy var rowHeight = GridViewController.len * 0.866
@@ -24,6 +26,13 @@ class GridViewController: UIViewController {
     
     @IBOutlet weak var scrollView: UIScrollView!
 
+    /// A dictionary of the caps for the tiles
+    private var tiles = [Cap]()
+    
+    private var installedTiles = [Int : RoundedImageView]()
+    
+    private var changedTiles = Set<Int>()
+    
     private var selectedTile: Int? = nil
 
     private weak var selectionView: RoundedButton!
@@ -38,13 +47,21 @@ class GridViewController: UIViewController {
     
     private var isShowingColors = false
     
+    private var capCount = 0
+    
     @IBAction func toggleAverageColor(_ sender: Any) {
         isShowingColors = !isShowingColors
         for (tile, view) in installedTiles {
             if isShowingColors {
                 view.image = nil
             } else {
-                view.image = Cap.tileImage(tile: tile)
+                if let image = tiles[tile].thumbnail {
+                    view.image = image
+                    continue
+                }
+                tiles[tile].downloadMainImage() { image in
+                    view.image = image
+                }
             }
         }
     }
@@ -52,12 +69,15 @@ class GridViewController: UIViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
         
+        app.database.add(listener: self)
+        capCount = app.database.capCount
+        tiles = app.database.caps.sorted { $0.tile < $1.tile }
+        
         let width = CGFloat(columns) * GridViewController.len + GridViewController.len / 2
-        let height = (CGFloat(Cap.totalCapCount) / CGFloat(columns)).rounded(.up) * rowHeight + margin
+        let height = (CGFloat(capCount) / CGFloat(columns)).rounded(.up) * rowHeight + margin
         canvasSize = CGSize(width: width, height: height)
         myView = UIView(frame: CGRect(origin: .zero, size: canvasSize))
         
-        
         scrollView.addSubview(myView)
         scrollView.contentSize = canvasSize
         scrollView.delegate = self
@@ -83,9 +103,35 @@ class GridViewController: UIViewController {
     override func viewWillDisappear(_ animated: Bool) {
         super.viewWillDisappear(animated)
         
-        Cap.save()
+        saveChangedTiles()
     }
     
+    // MARK: Tiles
+    
+    private func tileColor(tile: Int) -> UIColor {
+        return tiles[tile].color
+    }
+    
+    private func saveChangedTiles() {
+        for tile in changedTiles {
+            let cap = tiles[tile]
+            app.database.update(tile: tile, for: cap.id)
+        }
+    }
+    
+    /**
+     Switch two tiles.
+     */
+    private func switchTiles(_ lhs: Int, _ rhs: Int) -> Bool {
+        let temp = tiles[rhs]
+        tiles[rhs] = tiles[lhs]
+        tiles[lhs] = temp
+        changedTiles.insert(lhs)
+        changedTiles.insert(rhs)
+        return true
+    }
+    
+    
     private func setZoomRange() {
         let size = scrollView.frame.size
         let a = size.width / canvasSize.width
@@ -106,11 +152,16 @@ class GridViewController: UIViewController {
         guard s > margin else {
             return
         }
-        let column: CGFloat
+        let column: Int
         if row.isEven {
-            column = loc.x / GridViewController.len
+            column = Int(loc.x / GridViewController.len)
+            // Abort, if user tapped outside of the grid
+            if column >= columns {
+                clearTileSelection()
+                return
+            }
         } else {
-            column = (loc.x - GridViewController.len / 2) / GridViewController.len
+            column = Int((loc.x - GridViewController.len / 2) / GridViewController.len)
         }
         handleTileTapped(tile: row * columns + Int(column))
     }
@@ -123,8 +174,6 @@ class GridViewController: UIViewController {
         }
     }
 
-    private var installedTiles = [Int : RoundedImageView]()
-    
     private func showSelection(tile: Int) {
         clearTileSelection()
         
@@ -144,13 +193,23 @@ class GridViewController: UIViewController {
     private func makeTile(_ tile: Int) {
         let view = RoundedImageView(frame: frame(for: tile))
         myView.addSubview(view)
-        view.backgroundColor = Cap.tileColor(tile: tile)
+        view.backgroundColor = tileColor(tile: tile)
+        defer {
+            installedTiles[tile] = view
+        }
         // Only set image if images are shown
-        if !isShowingColors {
-            view.image = Cap.tileImage(tile: tile)
+        guard !isShowingColors else {
+            return
+            
+        }
+        if let image = tiles[tile].thumbnail {
+            view.image = image
+            return
         }
         
-        installedTiles[tile] = view
+        tiles[tile].downloadMainImage() { image in
+            view.image = image
+        }
     }
 
     private func frame(for tile: Int) -> CGRect {
@@ -166,13 +225,18 @@ class GridViewController: UIViewController {
             clearTileSelection()
             return
         }
-        Cap.switchTiles(oldTile, newTile)
+        guard switchTiles(oldTile, newTile) else {
+            clearTileSelection()
+            return
+        }
         // Switch cap colors
-        installedTiles[oldTile]?.backgroundColor = Cap.tileColor(tile: oldTile)
-        installedTiles[newTile]?.backgroundColor = Cap.tileColor(tile: newTile)
+        let temp = installedTiles[oldTile]?.backgroundColor
+        installedTiles[oldTile]?.backgroundColor = installedTiles[newTile]?.backgroundColor
+        installedTiles[newTile]?.backgroundColor = temp
         if !isShowingColors {
-            installedTiles[oldTile]?.image = Cap.tileImage(tile: oldTile)
-            installedTiles[newTile]?.image = Cap.tileImage(tile: newTile)
+            let temp = installedTiles[oldTile]?.image
+            installedTiles[oldTile]?.image = installedTiles[newTile]?.image
+            installedTiles[newTile]?.image = temp
         }
         clearTileSelection()
         
@@ -187,32 +251,46 @@ class GridViewController: UIViewController {
     }
     
     private func showTiles(in rect: CGRect) {
-        for i in 0..<Cap.totalCapCount {
-            if tileIsVisible(tile: i, in: rect) {
-                if installedTiles[i] != nil {
-                    continue
-                }
-                makeTile(i)
-            } else if let tile = installedTiles[i] {
-                tile.removeFromSuperview()
-                installedTiles[i] = nil
-            }
+        for tile in 0..<capCount {
+            refresh(tile: tile, inVisibleRect: rect)
         }
     }
     
-    private func updateTiles() {
-        guard #available(iOS 12.0, *) else {
+    private func refresh(tile: Int, inVisibleRect rect: CGRect) {
+        if tileIsVisible(tile: tile, in: rect) {
+            show(tile: tile)
+        } else if let installed = installedTiles[tile] {
+            installed.removeFromSuperview()
+            installedTiles[tile] = nil
+        }
+    }
+    
+    private func show(tile: Int) {
+        guard installedTiles[tile] == nil else {
             return
         }
+        makeTile(tile)
+    }
+    
+    private func remove(tile: Int) {
+        installedTiles[tile]?.removeFromSuperview()
+        installedTiles[tile] = nil
+    }
+    
+    private var visibleRect: CGRect {
         let scale = scrollView.zoomScale
         let offset = scrollView.contentOffset
         let size = scrollView.visibleSize
         
         let scaledOrigin = CGPoint(x: offset.x / scale, y: offset.y / scale)
         let scaledSize = CGSize(width: size.width / scale, height: size.height / scale)
-        let rect = CGRect(origin: scaledOrigin, size: scaledSize)
+        return CGRect(origin: scaledOrigin, size: scaledSize)
+    }
     
-        showTiles(in: rect)
+    private func updateTiles() {
+        DispatchQueue.main.async {
+            self.showTiles(in: self.visibleRect)
+        }
     }
 }
 
@@ -234,8 +312,31 @@ private extension Int {
     }
 }
 
-extension GridViewController: Logger {
+extension GridViewController: Logger { }
 
-    static let logToken: String = "[Grid]"
+extension GridViewController: DatabaseDelegate {
     
+    func database(didChangeCap id: Int) {
+        guard let view = installedTiles[id] else {
+            return
+        }
+        guard let cap = app.database.cap(for: id) else {
+            return
+        }
+        tiles[cap.tile] = cap
+        view.backgroundColor = cap.color
+        // Only set image if images are shown
+        if !isShowingColors {
+            view.image = cap.image
+        }
+    }
+    
+    func database(didAddCap cap: Cap) {
+        tiles.append(cap)
+        refresh(tile: cap.tile, inVisibleRect: visibleRect)
+    }
+    
+    func databaseRequiresFullRefresh() {
+        updateTiles()
+    }
 }

CapCollector/Presentation/ImageSelector.swift

@@ -7,7 +7,6 @@
 //
 
 import UIKit
-import SwiftyDropbox
 
 class ImageSelector: UIViewController {
 
@@ -28,7 +27,11 @@ class ImageSelector: UIViewController {
         return false
     }
 
-    // MARK: - CollectionView
+    // MARK: - Variables
+    
+    private var titleLabel: UILabel!
+    
+    private var subtitleLabel: UILabel!
 
     private var images = [UIImage?]()
 
@@ -36,6 +39,14 @@ class ImageSelector: UIViewController {
 
     @IBOutlet weak var collection: UICollectionView!
     
+    private var titleText: String {
+        "Cap \(cap.id) (\(cap.count) images)"
+    }
+    
+    private var subtitleText: String {
+        cap.name
+    }
+
     // MARK: - Life cycle
 
     override func viewDidLoad() {
@@ -43,6 +54,7 @@ class ImageSelector: UIViewController {
 
         collection.dataSource = self
         collection.delegate = self
+        
     }
 
     override func viewWillAppear(_ animated: Bool) {
@@ -51,17 +63,45 @@ class ImageSelector: UIViewController {
         downloadImages()
     }
     
+    override func didMove(toParent parent: UIViewController?) {
+        super.didMove(toParent: parent)
+
+        guard parent != nil && self.navigationItem.titleView == nil else {
+            return
+        }
+        initNavigationItemTitleView()
+    }
+    
+    private func initNavigationItemTitleView() {
+        self.titleLabel = UILabel()
+        titleLabel.text = titleText
+        titleLabel.font = .preferredFont(forTextStyle: .headline)
+        titleLabel.textColor = .label
+
+        self.subtitleLabel = UILabel()
+        subtitleLabel.text = subtitleText
+        subtitleLabel.font = .preferredFont(forTextStyle: .footnote)
+        subtitleLabel.textColor = .secondaryLabel
+
+        let stackView = UIStackView(arrangedSubviews: [titleLabel, subtitleLabel])
+        stackView.distribution = .equalCentering
+        stackView.alignment = .center
+        stackView.axis = .vertical
+
+        self.navigationItem.titleView = stackView
+    }
+
     // MARK: Image download
 
     private func downloadImages() {
         images = [UIImage?](repeating: nil, count: cap.count)
-        event("\(cap.count) images for cap \(cap.id)")
+        log("\(cap.count) images for cap \(cap.id)")
         if let image = cap.image {
             self.images[0] = image
             self.collection.reloadItems(at: [IndexPath(row: 0, section: 0)])
         } else {
-            cap.downloadImage { mainImage in
-                self.images[0] = mainImage
+            cap.downloadMainImage { image in
+                self.images[0] = image
                 self.collection.reloadItems(at: [IndexPath(row: 0, section: 0)])
             }
         }
@@ -69,7 +109,10 @@ class ImageSelector: UIViewController {
             return
         }
         for number in 1..<cap.count {
-            cap.downloadImage(number) { image in
+            _ = cap.downloadImage(number) { image in
+                guard let image = image else {
+                    return
+                }
                 self.images[number] = image
                 self.collection.reloadItems(at: [IndexPath(row: number, section: 0)])
             }
@@ -79,11 +122,7 @@ class ImageSelector: UIViewController {
     // MARK: Select
 
     private func selectedImage(nr: Int) {
-        guard let image = images[nr] else {
-            return
-        }
-        
-        cap.setMainImage(to: nr, image: image)
+        app.database.setMainImage(of: cap.id, to: nr)
     }
 }
 
@@ -104,7 +143,7 @@ extension ImageSelector: UICollectionViewDataSource {
             withReuseIdentifier: "Image",
             for: indexPath) as! ImageCell
 
-        cell.capView.image = images[indexPath.row]
+        cell.capView.image = images[indexPath.row] ?? UIImage(named: "launch")
         return cell
     }
 
@@ -138,9 +177,6 @@ extension ImageSelector : UICollectionViewDelegateFlowLayout {
     }
 }
 
-extension ImageSelector: Logger {
-
-    static let logToken = "[ImageSelector]"
-}
+extension ImageSelector: Logger { }
 
 

CapCollector/Presentation/SearchAndDisplayAccessory.swift

@@ -0,0 +1,185 @@
+//
+//  SearchAndDisplayAccessory.swift
+//  CapCollector
+//
+//  Created by Christoph on 09.10.19.
+//  Copyright © 2019 CH. All rights reserved.
+//
+
+import UIKit
+
+class PassthroughView: UIView {
+    
+    override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
+        let view = super.hitTest(point, with: event)
+        return view == self ? nil : view
+    }
+}
+
+protocol CapAccessoryDelegate: class {
+    
+    func capSearchWasDismissed()
+    
+    func capSearch(didChange text: String)
+    
+    func capAccessoryDidDiscardImage()
+    
+    func capAccessory(shouldSave image: UIImage)
+    
+    func capAccessoryCameraButtonPressed()
+}
+
+class SearchAndDisplayAccessory: PassthroughView {
+    
+    // MARK: - Outlets
+
+    @IBOutlet weak var newImageView: PassthroughView!
+    
+    @IBOutlet weak var capImage: RoundedImageView!
+    
+    @IBOutlet weak var saveButton: UIButton!
+    
+    @IBOutlet weak var deleteButton: UIButton!
+    
+    @IBOutlet weak var cameraButton: UIButton!
+    
+    @IBOutlet weak var searchBar: UISearchBar!
+    
+    // MARK: - Actions
+    
+    @IBAction func cameraButtonPressed() {
+        delegate?.capAccessoryCameraButtonPressed()
+    }
+    
+    @IBAction func saveButtonPressed() {
+        if let image = capImage.image {
+            delegate?.capAccessory(shouldSave: image)
+        }
+    }
+    
+    @IBAction func cancelButtonPressed() {
+        discardImage()
+    }
+    
+    // MARK: - Variables
+    
+    var view: UIView?
+    
+    weak var blurView: UIVisualEffectView?
+    
+    weak var currentBlurContraint: NSLayoutConstraint?
+    
+    weak var delegate: CapAccessoryDelegate?
+    
+    var currentImage: UIImage? {
+        capImage.image
+    }
+    
+    // MARK: - Setup
+    
+    convenience init(width: CGFloat) {
+        let frame = CGRect(origin: .zero, size: CGSize(width: width, height: 145))
+        self.init(frame: frame)
+    }
+    
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        setup()
+    }
+    
+    required init?(coder: NSCoder) {
+        super.init(coder: coder)
+        setup()
+    }
+    
+    private func setup() {
+        view = fromNib()
+        view!.frame = bounds
+        //view!.autoresizingMask = .flexibleHeight
+        addSubview(view!)
+        
+        let blur = UIBlurEffect(style: .systemThinMaterial)
+        let blurView = UIVisualEffectView(effect: blur)
+        self.blurView = blurView
+        blurView.translatesAutoresizingMaskIntoConstraints = false
+        blurView.isUserInteractionEnabled = false
+        insertSubview(blurView, at: 0)
+        
+        let t = searchBar.topAnchor.constraint(equalTo: blurView.topAnchor)
+        let b = searchBar.bottomAnchor.constraint(equalTo: blurView.bottomAnchor)
+        let l = leadingAnchor.constraint(equalTo: blurView.leadingAnchor)
+        let r = trailingAnchor.constraint(equalTo: blurView.trailingAnchor)
+        addConstraints([t, b, l, r])
+        
+        currentBlurContraint = t
+        
+        self.newImageView.alpha = 0
+        self.newImageView.isHidden = true
+        
+        searchBar.text = nil
+        searchBar.setShowsCancelButton(false, animated: false)
+        searchBar.delegate = self
+        
+        cameraButton.setImage(UIImage.templateImage(named: "camera_square"), for: .normal)
+    }
+    
+    // MARK: Search bar
+    
+    func dismissAndClearSearchBar() {
+        searchBar.resignFirstResponder()
+        searchBar.text = nil
+    }
+
+    // MARK: Cap image
+    
+    func showImageView(with image: UIImage) {
+        capImage.image = image
+        showImageView()
+    }
+    
+    func discardImage() {
+        dismissAndClearSearchBar()
+        hideImageView()
+        delegate?.capAccessoryDidDiscardImage()
+    }
+    
+    func hideImageView() {
+        currentBlurContraint?.isActive = false
+        let t = searchBar.topAnchor.constraint(equalTo: blurView!.topAnchor)
+        addConstraint(t)
+        currentBlurContraint = t
+        
+        self.newImageView.alpha = 0
+        self.newImageView.isHidden = true
+        self.capImage.image = nil
+    }
+    
+    private func showImageView() {
+        currentBlurContraint?.isActive = false
+        let t = blurView!.topAnchor.constraint(equalTo: saveButton.topAnchor, constant: -8)
+        addConstraint(t)
+        currentBlurContraint = t
+        
+        self.newImageView.isHidden = false
+        self.newImageView.alpha = 1
+    }
+}
+
+// MARK: - UISearchBarDelegate
+
+extension SearchAndDisplayAccessory: UISearchBarDelegate {
+
+    func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
+        searchBar.resignFirstResponder()
+        searchBar.text = nil
+        delegate?.capSearchWasDismissed()
+    }
+
+    func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
+        searchBar.resignFirstResponder()
+    }
+
+    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
+        delegate?.capSearch(didChange: searchText)
+    }
+}

CapCollector/Presentation/SearchAndDisplayAccessory.xib

@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="16096" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+    <device id="retina4_7" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="16086"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="SearchAndDisplayAccessory" customModule="CapCollector" customModuleProvider="target">
+            <connections>
+                <outlet property="cameraButton" destination="bIA-eq-Tn5" id="r0F-0j-Ve9"/>
+                <outlet property="capImage" destination="vQm-nH-J8o" id="bQK-Vu-Z1U"/>
+                <outlet property="deleteButton" destination="qhB-Sd-K8H" id="oym-9o-1m3"/>
+                <outlet property="newImageView" destination="0wK-yR-rO9" id="Gi3-I6-Xv9"/>
+                <outlet property="saveButton" destination="dt5-LD-28a" id="IYT-eN-3lb"/>
+                <outlet property="searchBar" destination="bCh-7y-t0w" id="8Tt-4h-Fkg"/>
+            </connections>
+        </placeholder>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <view contentMode="scaleToFill" id="iN0-l3-epB" customClass="PassthroughView" customModule="CapCollector" customModuleProvider="target">
+            <rect key="frame" x="0.0" y="0.0" width="414" height="145"/>
+            <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+            <subviews>
+                <searchBar contentMode="redraw" searchBarStyle="minimal" placeholder="Search caps" translucent="NO" translatesAutoresizingMaskIntoConstraints="NO" id="bCh-7y-t0w">
+                    <rect key="frame" x="0.0" y="89" width="358" height="56"/>
+                    <textInputTraits key="textInputTraits" autocorrectionType="no" spellCheckingType="no" keyboardAppearance="alert" returnKeyType="search" smartDashesType="no" smartInsertDeleteType="no" smartQuotesType="no"/>
+                    <scopeButtonTitles>
+                        <string>Title</string>
+                        <string>Title</string>
+                    </scopeButtonTitles>
+                </searchBar>
+                <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="bIA-eq-Tn5">
+                    <rect key="frame" x="358" y="89" width="56" height="56"/>
+                    <constraints>
+                        <constraint firstAttribute="width" secondItem="bIA-eq-Tn5" secondAttribute="height" multiplier="1:1" id="O09-ww-bHE"/>
+                        <constraint firstAttribute="height" constant="56" id="Y3N-l5-d94"/>
+                    </constraints>
+                    <inset key="imageEdgeInsets" minX="5" minY="5" maxX="5" maxY="5"/>
+                    <state key="normal" image="camera_square"/>
+                    <connections>
+                        <action selector="cameraButtonPressed" destination="-1" eventType="touchUpInside" id="ooo-b8-Atj"/>
+                    </connections>
+                </button>
+                <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="0wK-yR-rO9">
+                    <rect key="frame" x="0.0" y="-1" width="414" height="90"/>
+                    <subviews>
+                        <imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="vQm-nH-J8o" customClass="RoundedImageView" customModule="CapCollector" customModuleProvider="target">
+                            <rect key="frame" x="2" y="2" width="86" height="86"/>
+                            <constraints>
+                                <constraint firstAttribute="width" secondItem="vQm-nH-J8o" secondAttribute="height" multiplier="1:1" id="WHb-tV-k4S"/>
+                            </constraints>
+                            <userDefinedRuntimeAttributes>
+                                <userDefinedRuntimeAttribute type="color" keyPath="borderColor">
+                                    <color key="value" systemColor="secondaryLabelColor" red="0.23529411759999999" green="0.23529411759999999" blue="0.26274509800000001" alpha="0.59999999999999998" colorSpace="custom" customColorSpace="sRGB"/>
+                                </userDefinedRuntimeAttribute>
+                                <userDefinedRuntimeAttribute type="number" keyPath="borderWidth">
+                                    <real key="value" value="1"/>
+                                </userDefinedRuntimeAttribute>
+                            </userDefinedRuntimeAttributes>
+                        </imageView>
+                        <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="dt5-LD-28a">
+                            <rect key="frame" x="96" y="60" width="151" height="30"/>
+                            <constraints>
+                                <constraint firstAttribute="height" constant="30" id="Boy-dJ-2BJ"/>
+                            </constraints>
+                            <fontDescription key="fontDescription" style="UICTFontTextStyleBody"/>
+                            <state key="normal" title="Save"/>
+                            <connections>
+                                <action selector="saveButtonPressed" destination="-1" eventType="touchUpInside" id="O49-6L-mNY"/>
+                            </connections>
+                        </button>
+                        <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="qhB-Sd-K8H">
+                            <rect key="frame" x="255" y="58.5" width="151" height="33"/>
+                            <fontDescription key="fontDescription" style="UICTFontTextStyleBody"/>
+                            <state key="normal" title="Delete"/>
+                            <connections>
+                                <action selector="cancelButtonPressed" destination="-1" eventType="touchUpInside" id="4Sm-nV-aOd"/>
+                            </connections>
+                        </button>
+                    </subviews>
+                    <constraints>
+                        <constraint firstItem="vQm-nH-J8o" firstAttribute="leading" secondItem="0wK-yR-rO9" secondAttribute="leading" constant="2" id="6q2-Lc-eIF"/>
+                        <constraint firstItem="dt5-LD-28a" firstAttribute="leading" secondItem="vQm-nH-J8o" secondAttribute="trailing" constant="8" id="OUT-X8-cxn"/>
+                        <constraint firstAttribute="bottom" secondItem="vQm-nH-J8o" secondAttribute="bottom" constant="2" id="P8h-BA-8Yc"/>
+                        <constraint firstAttribute="height" constant="90" id="Rsk-qm-0WZ"/>
+                        <constraint firstAttribute="trailing" secondItem="qhB-Sd-K8H" secondAttribute="trailing" constant="8" id="fzn-7b-WrO"/>
+                        <constraint firstItem="vQm-nH-J8o" firstAttribute="top" secondItem="0wK-yR-rO9" secondAttribute="top" constant="2" id="h1D-Ut-lnp"/>
+                        <constraint firstAttribute="bottom" secondItem="dt5-LD-28a" secondAttribute="bottom" id="wFi-0u-ian"/>
+                        <constraint firstItem="qhB-Sd-K8H" firstAttribute="leading" secondItem="dt5-LD-28a" secondAttribute="trailing" constant="8" id="y1c-g7-5zg"/>
+                        <constraint firstItem="qhB-Sd-K8H" firstAttribute="centerY" secondItem="dt5-LD-28a" secondAttribute="centerY" id="yhy-DU-ReF"/>
+                        <constraint firstItem="qhB-Sd-K8H" firstAttribute="width" secondItem="dt5-LD-28a" secondAttribute="width" id="zpv-6V-gXr"/>
+                    </constraints>
+                </view>
+            </subviews>
+            <constraints>
+                <constraint firstItem="vUN-kp-3ea" firstAttribute="bottom" secondItem="bIA-eq-Tn5" secondAttribute="bottom" id="Geo-F0-pdI"/>
+                <constraint firstItem="bCh-7y-t0w" firstAttribute="leading" secondItem="vUN-kp-3ea" secondAttribute="leading" id="M9M-He-vxM"/>
+                <constraint firstItem="vUN-kp-3ea" firstAttribute="top" secondItem="0wK-yR-rO9" secondAttribute="top" constant="1" id="Uyp-J7-bKr"/>
+                <constraint firstItem="bIA-eq-Tn5" firstAttribute="leading" secondItem="bCh-7y-t0w" secondAttribute="trailing" id="i7w-LO-9lv"/>
+                <constraint firstItem="vUN-kp-3ea" firstAttribute="trailing" secondItem="0wK-yR-rO9" secondAttribute="trailing" id="iWS-vI-RAT"/>
+                <constraint firstItem="bCh-7y-t0w" firstAttribute="top" secondItem="0wK-yR-rO9" secondAttribute="bottom" id="iab-RT-0nN"/>
+                <constraint firstItem="vUN-kp-3ea" firstAttribute="trailing" secondItem="bIA-eq-Tn5" secondAttribute="trailing" id="kQV-mX-EoD"/>
+                <constraint firstItem="vUN-kp-3ea" firstAttribute="bottom" secondItem="bCh-7y-t0w" secondAttribute="bottom" id="r8c-kO-KT5"/>
+                <constraint firstItem="0wK-yR-rO9" firstAttribute="leading" secondItem="vUN-kp-3ea" secondAttribute="leading" id="rd3-iN-jtD"/>
+            </constraints>
+            <nil key="simulatedTopBarMetrics"/>
+            <nil key="simulatedBottomBarMetrics"/>
+            <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
+            <viewLayoutGuide key="safeArea" id="vUN-kp-3ea"/>
+            <point key="canvasLocation" x="97.5" y="105.625"/>
+        </view>
+    </objects>
+    <resources>
+        <image name="camera_square" width="220" height="220"/>
+    </resources>
+</document>

CapCollector/Presentation/SettingsController.swift

@@ -1,272 +0,0 @@
-//
-//  SettingsController.swift
-//  CapCollector
-//
-//  Created by Christoph on 15.10.18.
-//  Copyright © 2018 CH. All rights reserved.
-//
-
-import UIKit
-
-class SettingsController: UITableViewController {
-
-    @IBOutlet weak var totalCapsLabel: UILabel!
-    
-    @IBOutlet weak var totalImagesLabel: UILabel!
-    
-    @IBOutlet weak var recognizedCapsLabel: UILabel!
-    
-    @IBOutlet weak var imagesStatsLabel: UILabel!
-    
-    @IBOutlet weak var databaseUpdatesLabel: UILabel!
-    
-    @IBOutlet weak var dropboxAccountLabel: UILabel!
-    
-    @IBOutlet weak var countsLabel: UILabel!
-    
-    private var isUpdatingCounts = false
-    
-    private var isUploadingNameFile = false
-    
-    private var isUpdatingThumbnails = false
-    
-    private var isUpdatingColors = false
-    
-    override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
-        return .portrait
-    }
-    
-    override func viewDidLoad() {
-        super.viewDidLoad()
-    }
-
-    override func viewWillAppear(_ animated: Bool) {
-        updateDropboxStatus()
-        updateNameFileStats()
-        updateDatabaseStats()
-        
-        (navigationController as! NavigationController).allowLandscape = false
-    }
-    
-    override func viewDidAppear(_ animated: Bool) {
-        super.viewDidAppear(animated)
-        setClassifierChoice(Persistence.useMobileNet)
-    }
-    
-    private func updateThumbnails() {
-        isUpdatingThumbnails = true
-        for cap in Cap.all.values {
-            cap.makeThumbnail()
-        }
-        isUpdatingThumbnails = false
-    }
-    
-    private func updateColors() {
-        isUpdatingColors = true
-        Cap.shouldSave = false
-        for cap in Cap.all.values {
-            cap.makeAverageColor()
-        }
-        Cap.shouldSave = true
-        isUpdatingColors = false
-    }
-    
-    private func updateDatabaseStats() {
-        let totalCaps = Cap.totalCapCount
-        totalCapsLabel.text = "\(totalCaps) caps"
-        totalImagesLabel.text = "\(Cap.imageCount) images"
-        let recognizedCaps = Persistence.recognizedCapCount
-        let newCapCount = totalCaps - recognizedCaps
-        recognizedCapsLabel.text = "\(newCapCount) new caps"
-        let ratio = Float(Cap.imageCount)/Float(Cap.totalCapCount)
-        let (images, count) = Cap.getCapStatistics().enumerated().first(where: { $0.element != 0 })!
-        imagesStatsLabel.text = String(format: "%.2f images per cap, lowest count: %d (%dx)", ratio, images, count)
-    }
-    
-    private func updateNameFileStats() {
-        let capCount = Cap.totalCapCount - Persistence.lastUploadedCapCount
-        let imageCount = Cap.imageCount - Persistence.lastUploadedImageCount
-        databaseUpdatesLabel.text = "\(capCount) new caps and \(imageCount) new images"
-    }
-    
-    private func updateDropboxStatus() {
-        dropboxAccountLabel.text = DropboxController.shared.isEnabled ? "Sign out" : "Sign in"
-    }
-    
-    private func setClassifierChoice(_ useMobileNet: Bool) {
-        tableView.cellForRow(at: IndexPath(row: 0, section: 0))?.accessoryType = useMobileNet ? .checkmark : .none
-    }
-    
-    private func toggleClassifier() {
-        let newValue = !Persistence.useMobileNet
-        Persistence.useMobileNet = newValue
-        setClassifierChoice(newValue)
-    }
-    
-    override func tableView(_ tableView: UITableView, shouldHighlightRowAt indexPath: IndexPath) -> Bool {
-        switch indexPath.section {
-        case 0: // Choose models
-            return true
-        case 1: // Mosaic
-            return true
-        case 2: // Database
-            return indexPath.row == 2 && !isUploadingNameFile
-        case 3: // Refresh
-            switch indexPath.row {
-            case 0:
-                return !isUpdatingCounts
-            case 1:
-                return !isUpdatingThumbnails
-            case 2:
-                return !isUpdatingColors
-            default:
-                return false
-            }
-        case 4: // Dropbox account
-            return true
-        case 5: // Log file
-            return true
-        default: return false
-        }
-    }
-    
-    override func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath? {
-        switch indexPath.section {
-        case 0: // Choose models
-            return indexPath
-        case 1: // Mosaic
-            return indexPath
-        case 2: // Database
-            return (indexPath.row == 2 && !isUploadingNameFile) ? indexPath : nil
-        case 3: // Refresh count
-            switch indexPath.row {
-            case 0:
-                 return isUpdatingCounts ? nil : indexPath
-            case 1:
-                return isUpdatingThumbnails ? nil : indexPath
-            case 2:
-                return isUpdatingColors ? nil : indexPath
-            default:
-                return nil
-            }
-        case 4: // Dropbox account
-            return indexPath
-        case 5: // Log file
-            return indexPath
-        default: return nil
-        }
-    }
-
-    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
-        tableView.deselectRow(at: indexPath, animated: true)
-        switch indexPath.section {
-        case 0: // Choose models
-            toggleClassifier()
-        case 2: // Upload
-            if indexPath.row == 2 && !isUploadingNameFile {
-                uploadNameFile()
-            }
-        case 3: // Refresh count
-            switch indexPath.row {
-            case 0:
-                updateCounts()
-            case 1:
-                updateThumbnails()
-            case 2:
-                updateColors()
-            default:
-                break
-            }
-        default:
-            break
-        }
-    }
-
-    private func updateCounts() {
-        isUpdatingCounts = true
-        Cap.shouldSave = false
-        // TODO: Don't make all requests at the same time
-        DispatchQueue.global(qos: .userInitiated).async {
-            let list = Cap.all.keys.sorted()
-            let total = list.count
-            var finished = 0
-            let chunks = list.chunked(into: 10)
-            for chunk in chunks {
-                self.updateCounts(ids: chunk)
-                finished += 10
-                DispatchQueue.main.async {
-                    self.countsLabel.text = "\(finished) / \(total) finished"
-                }
-            }
-            self.isUpdatingCounts = false
-            Cap.shouldSave = true
-            DispatchQueue.main.async {
-                self.countsLabel.text = "Refresh image counts"
-                self.updateDatabaseStats()
-            }
-        }
-    }
-    
-    private func updateCounts(ids: [Int]) {
-        var count = ids.count
-        let s = DispatchSemaphore(value: 0)
-        for cap in ids {
-            Cap.all[cap]!.updateCount { _ in
-                count -= 1
-                if count == 0 {
-                    s.signal()
-                }
-            }
-        }
-        _ = s.wait(timeout: .now() + .seconds(30))
-        event("Finished updating ids \(ids.first!) to \(ids.last!)")
-    }
-    
-    private func uploadNameFile() {
-        event("Uploading name file")
-        isUploadingNameFile = true
-        Cap.saveAndUpload() { _ in
-            self.isUploadingNameFile = false
-            self.updateNameFileStats()
-        }
-    }
-    
-    private func toggleDropbox() {
-        guard !DropboxController.shared.isEnabled else {
-            DropboxController.shared.signOut()
-            updateDropboxStatus()
-            return
-        }
-        
-        DropboxController.shared.setup(in: self)
-        updateDropboxStatus()
-    }
-    
-    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
-        guard let id = segue.identifier else {
-            return
-        }
-        switch id {
-        case "showMosaic":
-            (navigationController as! NavigationController).allowLandscape = true
-        case "showLog":
-            return
-        default:
-            return
-        }
-        
-    }
-}
-
-extension SettingsController: Logger {
-    
-    static let logToken = "[Settings]"
-}
-
-private extension Array {
-    func chunked(into size: Int) -> [[Element]] {
-        return stride(from: 0, to: count, by: size).map {
-            Array(self[$0 ..< Swift.min($0 + size, count)])
-        }
-    }
-}

CapCollector/Presentation/SortController.swift

@@ -15,7 +15,9 @@ enum SortCriteria: Int {
     case match = 3
 }
 
-protocol SortControllerDelegate {
+protocol SortControllerDelegate: class {
+    
+    var sortControllerShouldIncludeMatchOption: Bool { get }
     
     func sortController(didSelect sortType: SortCriteria, ascending: Bool)
 }
@@ -26,32 +28,19 @@ class SortController: UITableViewController {
     
     var ascending: Bool = true
     
-    var delegate: SortControllerDelegate?
+    private var includeMatches: Bool {
+        delegate?.sortControllerShouldIncludeMatchOption ?? false
+    }
+    
+    weak var delegate: SortControllerDelegate?
     
     override func viewDidLoad() {
         super.viewDidLoad()
         
-        let height = Cap.hasMatches ? 310 : 270
+        let height = includeMatches ? 298 : 258
         preferredContentSize = CGSize(width: 200, height: height)
     }
     
-    private func setCell() {
-        for i in 0..<4 {
-            let index = IndexPath(row: i, section: 1)
-            let cell = tableView.cellForRow(at: index)
-            cell?.accessoryType = i == selected.rawValue ? .checkmark : .none
-        }
-        let index = IndexPath(row: 0, section: 0)
-        let cell = tableView.cellForRow(at: index)
-        cell?.accessoryType = ascending ? .checkmark : .none
-    }
-    
-    override func viewWillAppear(_ animated: Bool) {
-        super.viewWillAppear(animated)
-        
-        setCell()
-    }
-    
     private func giveFeedback(_ style: UIImpactFeedbackGenerator.FeedbackStyle) {
         let generator = UIImpactFeedbackGenerator(style: style)
         generator.impactOccurred()
@@ -63,7 +52,7 @@ class SortController: UITableViewController {
         tableView.deselectRow(at: indexPath, animated: true)
         guard indexPath.section == 1 else {
             ascending = !ascending
-            setCell()
+            tableView.reloadData()
             delegate?.sortController(didSelect: selected, ascending: ascending)
             giveFeedback(.light)
             return
@@ -76,17 +65,16 @@ class SortController: UITableViewController {
     
     override func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath? {
         guard indexPath.row == 3 else { return indexPath }
-        return Cap.hasMatches ? indexPath : nil
+        return includeMatches ? indexPath : nil
     }
     
-    /*
-    // MARK: - Navigation
-
-    // In a storyboard-based application, you will often want to do a little preparation before navigation
-    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
-        // Get the new view controller using segue.destination.
-        // Pass the selected object to the new view controller.
+    override func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
+        switch indexPath.section {
+        case 0:
+            cell.accessoryType = ascending ? .checkmark : .none
+        default:
+            cell.accessoryType = indexPath.row == selected.rawValue ? .checkmark : .none
+            break
+        }
     }
-    */
-
 }

CapCollector/Sync/DropBoxController.swift

@@ -1,89 +0,0 @@
-//
-//  DropboxController.swift
-//  CapFinder
-//
-//  Created by User on 08.04.18.
-//  Copyright © 2018 User. All rights reserved.
-//
-
-import Foundation
-import SwiftyDropbox
-import UIKit
-
-class DropboxController: Logger {
-
-    static var logToken = "[Dropbox]"
-
-    static var shared = DropboxController()
-
-    // MARK: Dropbox API
-
-    static var client: DropboxClient {
-        return DropboxClientsManager.authorizedClient!
-    }
-
-    var isEnabled: Bool {
-        return DropboxClientsManager.authorizedClient != nil
-    }
-
-    // MARK: - Setup
-
-    init() {
-        
-    }
-
-    /** Register dropbox, load names and images.
-     - parameter viewController: The controller launching the request
-     */
-    func setup(in viewController: UIViewController) {
-        guard isEnabled == false else {
-            event("Enabled")
-            return
-        }
-        event("Requesting access")
-        DropboxClientsManager.authorizeFromController(
-            UIApplication.shared,
-            controller: viewController) {
-                UIApplication.shared.open($0, options: [:])
-        }
-    }
-    
-    func signOut() {
-        DropboxClientsManager.unlinkClients()
-    }
-
-    /// Process the response of the dropbox registration handler
-    func handle(url: URL) {
-        guard let authResult = DropboxClientsManager.handleRedirectURL(url) else {
-            return
-        }
-        switch authResult {
-        case .success:
-            event("enabled")
-        case .cancel:
-            error("Authorization flow canceled")
-        case .error(_, let description):
-            error("Error on authentification: \(description)")
-        }
-    }
-
-    /// Download name list and cap images
-    func initializeDatabase() {
-        guard isEnabled else {
-            event("Dropbox not enabled")
-            return
-        }
-        Cap.load()
-    }
-
-    func move(file: String, to: String, completion: @escaping (Bool) -> Void) {
-        DropboxController.client.files.moveV2(fromPath: file, toPath: to).response { _, error in
-            if let err = error {
-                self.error("Failed to move file: \(err)")
-                completion(false)
-                return
-            }
-            completion(true)
-        }
-    }
-}