Simplify server init

Sources/App/CapServer.swift

@@ -23,28 +23,9 @@ final class CapServer {
 
     private var writers: Set<String>
     
-    var classifierVersion: Int {
+    var classifierVersion: Int = 0 {
-        get {
+        didSet {
-            do {
+            writeClassifierVersion()
-                let content = try String(contentsOf: classifierVersionFile)
-                    .trimmingCharacters(in: .whitespacesAndNewlines)
-                guard let value = Int(content) else {
-                    log("Invalid classifier version: \(content)")
-                    return 0
-                }
-                return value
-            } catch {
-                log("Failed to read classifier version file: \(error)")
-                return 0
-            }
-        }
-        set {
-            do {
-                try "\(newValue)".data(using: .utf8)!
-                    .write(to: classifierVersionFile)
-            } catch {
-                log("Failed to save classifier version: \(error)")
-            }
         }
     }
 
@@ -70,26 +51,59 @@ final class CapServer {
         caps.values.compactMap { $0.classifierVersion }.max() ?? 1
     }
 
-    init(in folder: URL, writers: [String]) throws {
+    var capCount: Int {
+        caps.count
+    }
+
+    var imageCount: Int {
+        caps.reduce(0) { $0 + $1.value.count }
+    }
+
+    init(in folder: URL, writers: [String]) {
         self.imageFolder = folder.appendingPathComponent("images")
         self.dbFile = folder.appendingPathComponent("caps.json")
         self.htmlFile = folder.appendingPathComponent("count.html")
         self.classifierVersionFile = folder.appendingPathComponent("classifier.version")
         self.classifierFile = folder.appendingPathComponent("classifier.mlmodel")
         self.writers = Set(writers)
+    }
 
-        var isDirectory: ObjCBool = false
+    func loadData() throws {
-        guard fm.fileExists(atPath: folder.path, isDirectory: &isDirectory),
+        loadClassifierVersion(at: classifierVersionFile)
-              isDirectory.boolValue else {
-            log("Public directory \(folder.path) is not a folder, or doesn't exist")
-            throw CapError.invalidConfiguration
-        }
-
         try loadCaps()
         try updateCounts()
         saveCapCountHTML()
     }
 
+    private func loadClassifierVersion(at url: URL) {
+        guard fm.fileExists(atPath: url.path) else {
+            return
+        }
+        let content: String
+        do {
+            content = try String(contentsOf: url)
+                .trimmingCharacters(in: .whitespacesAndNewlines)
+        } catch {
+            log("Failed to read classifier version file: \(error)")
+            return
+        }
+
+        guard let value = Int(content) else {
+            log("Invalid classifier version: \(content)")
+            return
+        }
+        self.classifierVersion = value
+    }
+
+    private func writeClassifierVersion() {
+        do {
+            try "\(classifierVersion)".data(using: .utf8)!
+                .write(to: classifierVersionFile)
+        } catch {
+            log("Failed to save classifier version: \(error)")
+        }
+    }
+
     private func loadCaps() throws {
         do {
             let data = try Data(contentsOf: dbFile)

Sources/App/configure.swift

@@ -11,13 +11,13 @@ public func configure(_ app: Application) throws {
     let resourceDirectory = URL(fileURLWithPath: app.directory.resourcesDirectory)
     let publicDirectory = app.directory.publicDirectory
     let config = Config(loadFrom: resourceDirectory)
+    server = CapServer(in: URL(fileURLWithPath: publicDirectory),
+                       writers: config.writers)
     if config.serveFiles {
         let middleware = FileMiddleware(publicDirectory: publicDirectory)
         app.middleware.use(middleware)
     }
 
-    server = try CapServer(in: URL(fileURLWithPath: publicDirectory),
-                           writers: config.writers)
     
     // Register routes to the router
     try routes(app)