Enhanced OAuth 2.0 Implementation with Dynamic Redirect URIs and Popup Authentication (#5566)

* Set custom parameter redirect URI

* Red border

* Blue border

frontend/lib/services/auth_service.dart

@@ -7,24 +7,61 @@ class AuthService {
       clientId:
           "387936576242-iejdacrjljds7hf99q0p6eqna8rju3sb.apps.googleusercontent.com");
 
-// Sign in with Google using redirect
+// Sign in with Google using popup
   Future<UserCredential?> signInWithGoogle() async {
     try {
       final GoogleAuthProvider googleProvider = GoogleAuthProvider();
-      await _auth.signInWithRedirect(googleProvider);
+
-      return await _auth.getRedirectResult();
+      // Step 1: Detect the current hostname
+      String hostname = Uri.base.host;
+
+      // Step 2: Determine the redirect URI
+      String redirectUri;
+      if (hostname.contains('github.dev')) {
+        // If running in Github Codespaces
+        redirectUri = Uri.base.toString();
+      } else {
+        // For local development or other environments, set accordingly
+        redirectUri = 'http://localhost:8000'; // Example for local development
+      }
+
+      // Step 3: Update OAuth 2.0 provider configuration dynamically
+      googleProvider.setCustomParameters({'redirect_uri': redirectUri});
+
+      // Use signInWithPopup instead of signInWithRedirect
+      final result = await _auth.signInWithPopup(googleProvider);
+      print(result);
+      return result;
     } catch (e) {
       print("Error during Google Sign-In: $e");
       return null;
     }
   }
 
-// Sign in with GitHub using redirect
+// Sign in with GitHub using popup
   Future<UserCredential?> signInWithGitHub() async {
     try {
       final GithubAuthProvider githubProvider = GithubAuthProvider();
-      await _auth.signInWithRedirect(githubProvider);
+
-      return await _auth.getRedirectResult();
+      // Step 1: Detect the current hostname
+      String hostname = Uri.base.host;
+
+      // Step 2: Determine the redirect URI
+      String redirectUri;
+      if (hostname.contains('github.dev')) {
+        // If running in Github Codespaces
+        redirectUri = Uri.base.toString();
+      } else {
+        // For local development or other environments, set accordingly
+        redirectUri = 'http://localhost:8000'; // Example for local development
+      }
+
+      // Step 3: Update OAuth 2.0 provider configuration dynamically
+      githubProvider.setCustomParameters({'redirect_uri': redirectUri});
+
+      // Use signInWithPopup instead of signInWithRedirect
+      final result = await _auth.signInWithPopup(githubProvider);
+      return result;
     } catch (e) {
       print("Error during GitHub Sign-In: $e");
       return null;