Update models

CapCollector/Extensions/UIAlertControllerExtensions.swift

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+//
+//  UIAlertControllerExtensions.swift
+//  CapFinder
+//
+//  Created by User on 23.03.18.
+//  Copyright © 2018 User. All rights reserved.
+//
+
+import Foundation
+import UIKit
+
+extension UIAlertController {
+
+    private struct AssociatedKeys {
+        static var blurStyleKey = "UIAlertController.blurStyleKey"
+    }
+
+    public var blurStyle: UIBlurEffect.Style {
+        get {
+            return objc_getAssociatedObject(self, &AssociatedKeys.blurStyleKey) as? UIBlurEffect.Style ?? .extraLight
+        } set (style) {
+            objc_setAssociatedObject(self, &AssociatedKeys.blurStyleKey, style, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
+
+            view.setNeedsLayout()
+            view.layoutIfNeeded()
+        }
+    }
+
+    public var cancelButtonColor: UIColor? {
+        return blurStyle == .dark ? UIColor(red: 28.0/255.0, green: 28.0/255.0, blue: 28.0/255.0, alpha: 1.0) : nil
+    }
+
+    private var visualEffectView: UIVisualEffectView? {
+        if let presentationController = presentationController, presentationController.responds(to: Selector(("popoverView"))), let view = presentationController.value(forKey: "popoverView") as? UIView // We're on an iPad and visual effect view is in a different place.
+        {
+            return view.recursiveSubviews.compactMap({$0 as? UIVisualEffectView}).first
+        }
+
+        return view.recursiveSubviews.compactMap({$0 as? UIVisualEffectView}).first
+    }
+
+    private var cancelActionView: UIView? {
+        return view.recursiveSubviews.compactMap({
+            $0 as? UILabel}
+            ).first(where: {
+                $0.text == actions.first(where: { $0.style == .cancel })?.title
+            })?.superview?.superview
+    }
+
+    public convenience init(title: String?, message: String?, preferredStyle: UIAlertController.Style, blurStyle: UIBlurEffect.Style) {
+        self.init(title: title, message: message, preferredStyle: preferredStyle)
+        self.blurStyle = blurStyle
+    }
+
+    open override func viewWillLayoutSubviews() {
+        super.viewWillLayoutSubviews()
+
+        visualEffectView?.effect = UIBlurEffect(style: blurStyle)
+        cancelActionView?.backgroundColor = cancelButtonColor
+    }
+}

CapCollector/Extensions/UIImageExtensions.swift

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+//
+//  UIImageExtensions.swift
+//  CapFinder
+//
+//  Created by User on 13.02.18.
+//  Copyright © 2018 User. All rights reserved.
+//
+
+import Foundation
+import UIKit
+
+extension UIImage {
+
+    static func templateImage(named: String) -> UIImage {
+        return UIImage(named: named)!.withRenderingMode(.alwaysTemplate)
+    }
+
+    /**
+     Resize an image to the target size
+     */
+    func resize(to targetSize: CGSize) -> UIImage {
+        let rect = CGRect(x: 0, y: 0, width: targetSize.width, height: targetSize.height)
+
+        UIGraphicsBeginImageContextWithOptions(targetSize, false, 1.0)
+        self.draw(in: rect)
+        let newImage = UIGraphicsGetImageFromCurrentImageContext()
+        UIGraphicsEndImageContext()
+        return newImage!
+    }
+
+    /**
+     Crop an image to a square, centered around the middle of the frame
+     - parameter factor: The crop factor of the resulting image
+     - returns: The cropped image
+     */
+    func crop(factor: CGFloat) -> UIImage {
+        let width = self.size.width * factor
+        return crop(to: width)
+    }
+
+    /**
+     Crop an image to a square, centered around the middle of the frame
+     - parameter size: The height and width of the resulting image
+     - returns: The cropped image
+     */
+    func crop(to size: CGFloat) -> UIImage {
+        var rect = CGRect(
+            x: (self.size.height - size) / 2,
+            y: (self.size.width - size) / 2,
+            width: size,
+            height: size)
+        rect.origin.x *= scale
+        rect.origin.y *= scale
+        rect.size.width *= scale
+        rect.size.height *= scale
+
+        let imageRef = cgImage!.cropping(to: rect)
+        return UIImage(cgImage: imageRef!, scale: scale, orientation: imageOrientation)
+    }
+
+    /// The (circular) image masked by a circle
+    var circleMasked: UIImage? {
+        let width = size.width
+        let height = size.height
+        let isPortrait = height > width
+        let breadth = min(width, height)
+        let breadthSize = CGSize(width: breadth, height: breadth)
+        let breadthRect = CGRect(origin: .zero, size: breadthSize)
+        UIGraphicsBeginImageContextWithOptions(breadthSize, false, scale)
+        defer { UIGraphicsEndImageContext() }
+
+        let x = isPortrait ? 0 : floor((width - height) / 2)
+        let y = isPortrait ? floor((height - width) / 2) : 0
+        let rect = CGRect(origin: CGPoint( x: x, y: y), size: breadthSize)
+        guard let cgImage = cgImage?.cropping(to: rect) else {
+            return nil
+        }
+        UIBezierPath(ovalIn: breadthRect).addClip()
+        UIImage(cgImage: cgImage, scale: 1, orientation: imageOrientation).draw(in: breadthRect)
+        return UIGraphicsGetImageFromCurrentImageContext()
+    }
+}

CapCollector/Extensions/UIViewExtensions.swift

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+//
+//  UIViewExtensions.swift
+//  CapFinder
+//
+//  Created by User on 23.03.18.
+//  Copyright © 2018 User. All rights reserved.
+//
+
+import Foundation
+import UIKit
+
+extension UIView {
+
+    var recursiveSubviews: [UIView] {
+        var subviews = self.subviews.compactMap{ $0 }
+        subviews.forEach { subviews.append(contentsOf: $0.recursiveSubviews) }
+        return subviews
+    }
+}

CapCollector/Extensions/ViewControllerExtensions.swift

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+//
+//  ViewControllerExtensions.swift
+//  CapFinder
+//
+//  Created by User on 18.03.18.
+//  Copyright © 2018 User. All rights reserved.
+//
+
+import Foundation
+import UIKit
+
+extension UIViewController {
+
+    // MARK: Alerts
+
+    /// Present an alert with a message to the user
+    func showAlert(_ message: String, title: String = "Error") {
+        let alertController = UIAlertController(
+            title: title,
+            message: message,
+            preferredStyle: .alert,
+            blurStyle: .dark)
+
+        alertController.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
+
+        self.present(alertController, animated: true, completion: nil)
+    }
+}