task 27: bridge added

P2PShopping/P2PShopping/Bridge/LocationBridgeHandler.swift

@@ -0,0 +1,34 @@
+import Foundation
+import WebKit
+
+/// Issue #27 - [Bridge] Expose requestLocationPermission() to JS (iOS)
+class LocationBridgeHandler: NSObject, WKScriptMessageHandler {
+
+    private let permissionManager: LocationPermissionManager
+
+    init(permissionManager: LocationPermissionManager) {
+        self.permissionManager = permissionManager
+    }
+
+    /// Called when JS calls: window.webkit.messageHandlers.locationBridge.postMessage("requestLocationPermission")
+    func userContentController(
+        _ userContentController: WKUserContentController,
+        didReceive message: WKScriptMessage
+    ) {
+        guard message.name == "locationBridge",
+              let action = message.body as? String,
+              action == "requestLocationPermission" else { return }
+
+        Task { @MainActor in
+            self.permissionManager.requestWhenInUsePermission()
+
+            // Wait for the permission result then send it back to JS
+            try? await Task.sleep(nanoseconds: 1_000_000_000)
+
+            let result = self.permissionManager.permissionGranted ? "Granted" : "Denied"
+
+            let js = "window.onLocationPermissionResult('\(result)')"
+            message.webView?.evaluateJavaScript(js, completionHandler: nil)
+        }
+    }
+}

P2PShopping/P2PShopping/ContentView.swift

@@ -1,7 +1,7 @@
 import SwiftUI
 
 struct ContentView: View {
-    @StateObject private var locationManager = LocationPermissionManager()
+    @EnvironmentObject private var locationManager: LocationPermissionManager
 
     var body: some View {
         VStack(spacing: 24) {

P2PShopping/P2PShopping/P2PShoppingApp.swift

@@ -6,12 +6,26 @@
 //
 
 import SwiftUI
+import WebKit
 
 @main
 struct P2PShoppingApp: App {
+
+    @StateObject private var locationManager = LocationPermissionManager()
+
     var body: some Scene {
         WindowGroup {
             ContentView()
+                .environmentObject(locationManager)
+                .onAppear {
+                    setupBridge()
+                }
         }
     }
+
+    private func setupBridge() {
+        let contentController = WKUserContentController()
+        let bridgeHandler = LocationBridgeHandler(permissionManager: locationManager)
+        contentController.add(bridgeHandler, name: "locationBridge")
+    }
 }