feat: implement app tracking transparency

vibetype.xcodeproj/project.pbxproj

@@ -18,6 +18,7 @@
 		595F23AF25CEFBFE0053416C /* WebView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 595F23A425CEFBFE0053416C /* WebView.swift */; };
 		6BC0B4AB2ED94D4100E03379 /* README.md in Resources */ = {isa = PBXBuildFile; fileRef = 6BC0B4AA2ED94D3A00E03379 /* README.md */; };
 		7692219AF6CB60CE94E971C2 /* Pods_vibetype.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 4248D6343DB1391C0EB00BB7 /* Pods_vibetype.framework */; };
+		936658952F3085DF00CE9A4A /* TrackingTransparency.swift in Sources */ = {isa = PBXBuildFile; fileRef = 936658942F3085DF00CE9A4A /* TrackingTransparency.swift */; };
 		CDC0FE292388222C002C8D56 /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = CDC0FE252388222B002C8D56 /* Main.storyboard */; };
 		CDC0FE2A2388222C002C8D56 /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = CDC0FE272388222B002C8D56 /* LaunchScreen.storyboard */; };
 		DDBCB1142D6C602600313680 /* GoogleService-Info.plist in Resources */ = {isa = PBXBuildFile; fileRef = DDBCB1132D6C602600313680 /* GoogleService-Info.plist */; };
@@ -37,6 +38,7 @@
 		595F23A325CEFBFE0053416C /* Printer.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = Printer.swift; path = vibetype/Printer.swift; sourceTree = "<group>"; };
 		595F23A425CEFBFE0053416C /* WebView.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = WebView.swift; path = vibetype/WebView.swift; sourceTree = "<group>"; };
 		6BC0B4AA2ED94D3A00E03379 /* README.md */ = {isa = PBXFileReference; lastKnownFileType = net.daringfireball.markdown; path = README.md; sourceTree = "<group>"; };
+		936658942F3085DF00CE9A4A /* TrackingTransparency.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = TrackingTransparency.swift; path = vibetype/TrackingTransparency.swift; sourceTree = "<group>"; };
 		B3109B700B2E429F9589C698 /* Pods-vibetype.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-vibetype.release.xcconfig"; path = "Target Support Files/Pods-vibetype/Pods-vibetype.release.xcconfig"; sourceTree = "<group>"; };
 		CDC0FE262388222B002C8D56 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = vibetype/Base.lproj/Main.storyboard; sourceTree = "<group>"; };
 		CDC0FE282388222B002C8D56 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = vibetype/Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
@@ -80,6 +82,7 @@
 				595F23A125CEFBFE0053416C /* ViewController.swift */,
 				CDC0FE272388222B002C8D56 /* LaunchScreen.storyboard */,
 				CDC0FE252388222B002C8D56 /* Main.storyboard */,
+				936658942F3085DF00CE9A4A /* TrackingTransparency.swift */,
 				595F23A425CEFBFE0053416C /* WebView.swift */,
 				30FCACC6A7BF53CD6D9CF6C0 /* Pods */,
 				59333BAA25CFF706003392A4 /* vibetype.app */,
@@ -200,10 +203,14 @@
 			inputFileListPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-vibetype/Pods-vibetype-frameworks-${CONFIGURATION}-input-files.xcfilelist",
 			);
+			inputPaths = (
+			);
 			name = "[CP] Embed Pods Frameworks";
 			outputFileListPaths = (
 				"${PODS_ROOT}/Target Support Files/Pods-vibetype/Pods-vibetype-frameworks-${CONFIGURATION}-output-files.xcfilelist",
 			);
+			outputPaths = (
+			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
 			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-vibetype/Pods-vibetype-frameworks.sh\"\n";
@@ -218,6 +225,7 @@
 			files = (
 				595F23AD25CEFBFE0053416C /* AppDelegate.swift in Sources */,
 				595F23A825CEFBFE0053416C /* SceneDelegate.swift in Sources */,
+				936658952F3085DF00CE9A4A /* TrackingTransparency.swift in Sources */,
 				595F23A525CEFBFE0053416C /* Settings.swift in Sources */,
 				595F23AE25CEFBFE0053416C /* Printer.swift in Sources */,
 				595F23AC25CEFBFE0053416C /* ViewController.swift in Sources */,

vibetype/Info.plist

@@ -52,6 +52,8 @@
 	<string>The app allows taking photos of event posters to show interest in the listed events.</string>
 	<key>NSLocationWhenInUseUsageDescription</key>
 	<string>The app allows accessing your location to provide event recommendations based on your area.</string>
+	<key>NSUserTrackingUsageDescription</key>
+	<string>Your device's advertising identifier will be used by Google Analytics to measure and analyze app usage across apps and websites, helping us understand how our service is being used and improve it for all users.</string>
 	<!-- <key>NSMicrophoneUsageDescription</key>
 	<string>Capture Audio by user request</string> -->
 	<key>UIApplicationSceneManifest</key>

vibetype/TrackingTransparency.swift

@@ -0,0 +1,59 @@
+import Foundation
+import AppTrackingTransparency
+import AdSupport
+
+@available(iOS 14, *)
+class TrackingTransparencyManager {
+
+    // Request ATT permission and return the result via callback
+    static func requestPermission(completion: @escaping (ATTrackingManager.AuthorizationStatus) -> Void) {
+        ATTrackingManager.requestTrackingAuthorization { status in
+            DispatchQueue.main.async {
+                completion(status)
+            }
+        }
+    }
+
+    // Get current tracking authorization status
+    static func getStatus() -> ATTrackingManager.AuthorizationStatus {
+        return ATTrackingManager.trackingAuthorizationStatus
+    }
+
+    // Get status as a string representation for JavaScript
+    static func getStatusString() -> String {
+        return statusToString(getStatus())
+    }
+
+    // Convert status to string
+    static func statusToString(_ status: ATTrackingManager.AuthorizationStatus) -> String {
+        switch status {
+        case .notDetermined:
+            return "notDetermined"
+        case .restricted:
+            return "restricted"
+        case .denied:
+            return "denied"
+        case .authorized:
+            return "authorized"
+        @unknown default:
+            return "unknown"
+        }
+    }
+
+    // Get IDFA (Identifier for Advertisers) if authorized
+    static func getIDFA() -> String? {
+        guard getStatus() == .authorized else {
+            return nil
+        }
+
+        let idfa = ASIdentifierManager.shared().advertisingIdentifier
+
+        // Apple returns all zeros when tracking is not authorized
+        let zeroIDFA = UUID(uuidString: "00000000-0000-0000-0000-000000000000")!
+        guard idfa != zeroIDFA else {
+            return nil
+        }
+
+        return idfa.uuidString
+    }
+}

vibetype/ViewController.swift

@@ -231,20 +231,79 @@ extension UIColor {
 
 extension ViewController: WKScriptMessageHandler {
   func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
+        if message.name == "att-get-idfa" {
+            handleATTGetIDFA()
+        }
+        if message.name == "att-get-status" {
+            handleATTGetStatus()
+        }
+        if message.name == "att-request-permission" {
+            handleATTPermissionRequest()
+        }
         if message.name == "print" {
             printView(webView: vibetype.webView)
         }
-        if message.name == "push-subscribe" {
-            handleSubscribeTouch(message: message)
-        }
         if message.name == "push-permission-request" {
             handlePushPermission()
         }
         if message.name == "push-permission-state" {
             handlePushState()
         }
+        if message.name == "push-subscribe" {
+            handleSubscribeTouch(message: message)
+        }
         if message.name == "push-token" {
             handleFCMToken()
         }
   }
 }
+
+// MARK: - App Tracking Transparency Handlers
+extension ViewController {
+
+    private func dispatchATTEvent(eventName: String, detail: String) {
+        func toJsonString(_ value: String) -> String? {
+            guard let data = try? JSONSerialization.data(withJSONObject: [value]),
+                  let json = String(data: data, encoding: .utf8) else { return nil }
+            return String(json.dropFirst().dropLast()) // strip wrapping [ and ]
+        }
+        guard let detailJson = toJsonString(detail),
+              let eventNameJson = toJsonString(eventName) else {
+            print("Error encoding ATT event data for: \(eventName)")
+            return
+        }
+        let script = "window.dispatchEvent(new CustomEvent(\(eventNameJson), { detail: \(detailJson) }));"
+        vibetype.webView.evaluateJavaScript(script) { _, error in
+            if let error = error {
+                print("Error dispatching \(eventName): \(error)")
+            }
+        }
+    }
+
+    func handleATTPermissionRequest() {
+        if #available(iOS 14, *) {
+            TrackingTransparencyManager.requestPermission { [weak self] status in
+                guard let self else { return }
+                self.dispatchATTEvent(eventName: "att-permission-response", detail: TrackingTransparencyManager.statusToString(status))
+            }
+        } else {
+            dispatchATTEvent(eventName: "att-permission-response", detail: "unavailable")
+        }
+    }
+
+    func handleATTGetStatus() {
+        if #available(iOS 14, *) {
+            dispatchATTEvent(eventName: "att-status-response", detail: TrackingTransparencyManager.getStatusString())
+        } else {
+            dispatchATTEvent(eventName: "att-status-response", detail: "unavailable")
+        }
+    }
+
+    func handleATTGetIDFA() {
+        if #available(iOS 14, *) {
+            dispatchATTEvent(eventName: "att-idfa-response", detail: TrackingTransparencyManager.getIDFA() ?? "")
+        } else {
+            dispatchATTEvent(eventName: "att-idfa-response", detail: "")
+        }
+    }
+}

vibetype/WebView.swift

@@ -3,19 +3,35 @@ import WebKit
 import AuthenticationServices
 import SafariServices
 
+final class WeakScriptMessageHandler: NSObject, WKScriptMessageHandler {
+    private weak var delegate: AnyObject?
 
-func createWebView(container: UIView, WKSMH: WKScriptMessageHandler, WKND: WKNavigationDelegate, NSO: NSObject, VC: ViewController) -> WKWebView{
+    init(delegate: AnyObject & WKScriptMessageHandler) {
+        self.delegate = delegate
+        super.init()
+    }
+
+    func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
+        (delegate as? WKScriptMessageHandler)?.userContentController(userContentController, didReceive: message)
+    }
+}
+
+func createWebView(container: UIView, WKSMH: AnyObject & WKScriptMessageHandler, WKND: WKNavigationDelegate, NSO: NSObject, VC: ViewController) -> WKWebView{
 
     let config = WKWebViewConfiguration()
     let userContentController = WKUserContentController()
     let deviceModel = UIDevice.current.model
     let osVersion = ProcessInfo().operatingSystemVersion
-
-    userContentController.add(WKSMH, name: "print")
-    userContentController.add(WKSMH, name: "push-subscribe")
-    userContentController.add(WKSMH, name: "push-permission-request")
-    userContentController.add(WKSMH, name: "push-permission-state")
-    userContentController.add(WKSMH, name: "push-token")
+    let weakHandler = WeakScriptMessageHandler(delegate: WKSMH)
+
+    userContentController.add(weakHandler, name: "att-get-idfa")
+    userContentController.add(weakHandler, name: "att-get-status")
+    userContentController.add(weakHandler, name: "att-request-permission")
+    userContentController.add(weakHandler, name: "print")
+    userContentController.add(weakHandler, name: "push-permission-request")
+    userContentController.add(weakHandler, name: "push-permission-state")
+    userContentController.add(weakHandler, name: "push-subscribe")
+    userContentController.add(weakHandler, name: "push-token")
 
     config.userContentController = userContentController