Add Google Meet integration to meeting creation

lib/screens/meetings/create_meeting_screen.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:intl/intl.dart';
 import '../../services/supabase_service.dart';
+import '../../services/google_meet_service.dart';
 
 class CreateMeetingScreen extends StatefulWidget {
   const CreateMeetingScreen({super.key});
@@ -14,13 +15,15 @@ class _CreateMeetingScreenState extends State<CreateMeetingScreen> {
   final _titleController = TextEditingController();
   final _descriptionController = TextEditingController();
   final _urlController = TextEditingController();
-  final _durationController =
-      TextEditingController(text: '60'); // Default to 60 minutes
+  final _durationController = TextEditingController(text: '60'); // Default to 60 minutes
+
   final _supabaseService = SupabaseService();
-
+  final _googleMeetService = GoogleMeetService();
+
   DateTime? _selectedDate;
   TimeOfDay? _selectedTime;
   bool _isLoading = false;
+  bool _isCreatingMeetLink = false;
   bool _isGoogleMeetUrl = true;
 
   @override
@@ -44,7 +47,86 @@ class _CreateMeetingScreenState extends State<CreateMeetingScreen> {
       _isGoogleMeetUrl = _validateGoogleMeetUrl(url);
     });
   }
+
+  Future<void> _createGoogleMeetLink() async {
+    if (_selectedDate == null || _selectedTime == null) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(
+          content: Text('Please select date and time first'),
+          backgroundColor: Colors.red,
+        ),
+      );
+      return;
+    }
+
+    // Combine date and time
+    final meetingDateTime = DateTime(
+      _selectedDate!.year,
+      _selectedDate!.month,
+      _selectedDate!.day,
+      _selectedTime!.hour,
+      _selectedTime!.minute,
+    );
+
+    // Validate meeting is in the future
+    if (meetingDateTime.isBefore(DateTime.now())) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(
+          content: Text('Meeting time must be in the future'),
+          backgroundColor: Colors.red,
+        ),
+      );
+      return;
+    }
+
+    // Parse duration
+    int duration = 60;
+    try {
+      duration = int.parse(_durationController.text.trim());
+      if (duration <= 0) duration = 60;
+    } catch (e) {
+      // Default to 60 if parsing fails
+      duration = 60;
+    }
+
+    setState(() => _isCreatingMeetLink = true);
 
+    final link = await _googleMeetService.createMeetLink(
+      start: meetingDateTime,
+      durationMinutes: duration,
+      title: _titleController.text.trim().isNotEmpty
+          ? _titleController.text.trim()
+          : 'Meeting',
+      description: _descriptionController.text.trim(),
+    );
+
+    if (!mounted) return;
+
+    setState(() => _isCreatingMeetLink = false);
+
+    if (link != null) {
+      _urlController.text = link;
+      _checkUrl(link);
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(
+          content: Text('Google Meet link created successfully'),
+          backgroundColor: Colors.green,
+        ),
+      );
+    } else {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: const Text('Failed to create Google Meet link. Please sign in with Google.'),
+          backgroundColor: Colors.orange,
+          action: SnackBarAction(
+            label: 'Retry',
+            onPressed: () => _createGoogleMeetLink(),
+          ),
+        ),
+      );
+    }
+  }
+
   Future<void> _createMeeting() async {
     if (!_formKey.currentState!.validate()) return;
 
@@ -372,7 +454,33 @@ class _CreateMeetingScreenState extends State<CreateMeetingScreen> {
                         _checkUrl(value);
                       },
                     ),
-
+
+                    // Create Google Meet Link button
+                    const SizedBox(height: 8),
+                    SizedBox(
+                      width: double.infinity,
+                      child: ElevatedButton.icon(
+                        onPressed: _isCreatingMeetLink ? null : _createGoogleMeetLink,
+                        icon: _isCreatingMeetLink
+                            ? const SizedBox(
+                                width: 16,
+                                height: 16,
+                                child: CircularProgressIndicator(
+                                  strokeWidth: 2,
+                                  color: Colors.white,
+                                ),
+                              )
+                            : const Icon(Icons.video_call),
+                        label: Text(
+                          _isCreatingMeetLink ? 'Creating Meet Link...' : 'Create Google Meet Link',
+                        ),
+                        style: ElevatedButton.styleFrom(
+                          backgroundColor: Colors.blue.shade800,
+                          padding: const EdgeInsets.symmetric(vertical: 16),
+                        ),
+                      ),
+                    ),
+
                     // Warning message for non-Google Meet URLs
                     if (_urlController.text.isNotEmpty && !_isGoogleMeetUrl)
                       Padding(

lib/services/google_meet_service.dart

@@ -0,0 +1,89 @@
+import 'package:google_sign_in/google_sign_in.dart';
+import 'package:googleapis/calendar/v3.dart' as cal;
+import 'package:googleapis_auth/auth_io.dart';
+import 'package:http/http.dart' as http;
+
+class GoogleMeetService {
+  final GoogleSignIn _googleSignIn = GoogleSignIn(
+    scopes: [
+      cal.CalendarApi.calendarScope,
+      cal.CalendarApi.calendarEventsScope,
+    ],
+  );
+
+  Future<String?> createMeetLink({
+    required DateTime start,
+    required int durationMinutes,
+    required String title,
+    String? description,
+  }) async {
+    try {
+      // Sign in with Google
+      final account = await _googleSignIn.signIn();
+      if (account == null) return null;
+
+      // Get authentication
+      final authentication = await account.authentication;
+      final accessToken = authentication.accessToken;
+
+      if (accessToken == null) {
+        print('No access token available');
+        return null;
+      }
+
+      // Create authenticated client using authenticatedClient function (FIXED)
+      final credentials = AccessCredentials(
+        AccessToken('Bearer', accessToken, DateTime.now().add(const Duration(hours: 1)).toUtc()),
+        null, // No refresh token needed for one-time use
+        _googleSignIn.scopes,
+      );
+
+      final authClient = authenticatedClient(http.Client(), credentials);
+
+      try {
+        final calendarApi = cal.CalendarApi(authClient);
+
+        final event = cal.Event(
+          summary: title,
+          description: description,
+          start: cal.EventDateTime(dateTime: start.toUtc()),
+          end: cal.EventDateTime(
+            dateTime: start.add(Duration(minutes: durationMinutes)).toUtc(),
+          ),
+          conferenceData: cal.ConferenceData(
+            createRequest: cal.CreateConferenceRequest(
+              requestId: DateTime.now().millisecondsSinceEpoch.toString(),
+              conferenceSolutionKey: cal.ConferenceSolutionKey(
+                type: 'hangoutsMeet',
+              ),
+            ),
+          ),
+        );
+
+        final createdEvent = await calendarApi.events.insert(
+          event,
+          'primary',
+          conferenceDataVersion: 1,
+        );
+
+        // Return the meet link
+        return createdEvent.hangoutLink ??
+            createdEvent.conferenceData?.entryPoints
+                ?.firstWhere(
+                  (e) => e.entryPointType == 'video',
+                  orElse: () => cal.EntryPoint(uri: ''),
+                )
+                .uri;
+      } finally {
+        authClient.close();
+      }
+    } catch (e) {
+      print('Error creating Google Meet link: $e');
+      return null;
+    }
+  }
+
+  Future<void> signOut() async {
+    await _googleSignIn.signOut();
+  }
+}

pubspec.yaml

@@ -68,6 +68,10 @@ dependencies:
 
   speech_to_text: ^7.3.0
 
+  google_sign_in: ^6.2.1
+  googleapis: ^13.1.0
+  googleapis_auth: ^1.4.1
+
 dev_dependencies:
   flutter_test:
     sdk: flutter