Updated swiping page

lib/forms/matched_screen.dart

@@ -8,7 +8,8 @@ class MatchedScreen extends StatelessWidget {
   final VoidCallback onMessageButtonPressed;
   final VoidCallback onContinueButtonPressed;
 
-  const MatchedScreen({super.key,
+  const MatchedScreen({
+    super.key,
     required this.user1Name,
     required this.user2Name,
     required this.user1ImageUrl,
@@ -35,13 +36,20 @@ class MatchedScreen extends StatelessWidget {
             Row(
               mainAxisAlignment: MainAxisAlignment.center,
               children: [
+                // TODO imageUrl cant be null or empty with NetworkImage
                 CircleAvatar(
-                  backgroundImage: NetworkImage(user1ImageUrl),
+                  backgroundColor: Colors.blueGrey[300],
+                  backgroundImage: (user1ImageUrl.isEmpty)
+                      ? null
+                      : NetworkImage(user1ImageUrl),
                   radius: 50,
                 ),
                 const SizedBox(width: 24),
                 CircleAvatar(
-                  backgroundImage: NetworkImage(user2ImageUrl),
+                  backgroundColor: Colors.blueGrey[300],
+                  backgroundImage: (user2ImageUrl.isEmpty)
+                      ? null
+                      : NetworkImage(user2ImageUrl),
                   radius: 50,
                 ),
               ],

lib/pages/chat_page.dart

@@ -1,10 +1,11 @@
 import 'package:cloud_firestore/cloud_firestore.dart';
-import 'package:cofounderella/components/chat_bubble.dart';
-import 'package:cofounderella/components/my_textfield.dart';
-import 'package:cofounderella/services/auth/auth_service.dart';
-import 'package:cofounderella/services/chat/chat_service.dart';
 import 'package:flutter/material.dart';
 
+import '../components/chat_bubble.dart';
+import '../components/my_textfield.dart';
+import '../services/auth/auth_service.dart';
+import '../services/chat/chat_service.dart';
+
 class ChatPage extends StatefulWidget {
   final String receiverEmail;
   final String receiverID;
@@ -152,7 +153,7 @@ class _ChatPageState extends State<ChatPage> {
             ),
           ),
           ChatBubble(
-            message: data["message"],
+            message: data['message'],
             isCurrentUser: isCurrentUser,
           ),
         ],
@@ -169,8 +170,8 @@ class _ChatPageState extends State<ChatPage> {
           Expanded(
             child: MyTextField(
               controller: _messageController,
-              hintText: "Type a message",
+              hintText: 'Type a message',
-              obscureText: false, // TODO make this optional
+              obscureText: false,
               focusNode: myFocusNode,
             ),
           ),

lib/pages/user_profile_page.dart

@@ -19,7 +19,15 @@ class UserProfilePage extends StatefulWidget {
 }
 
 class UserProfilePageState extends State<UserProfilePage> {
+  /// List with [all] user profiles
   List<UserProfile> userProfiles = [];
+
+  /// The current's user profile
+  UserProfile? currentUserProfile;
+
+  /// Other users that yet did either not receive a swipe status
+  List<UserProfile> potentialUserProfiles = []; // potential users for matching
+
   late final SwipableStackController _controller;
 
   // get instance of firestore and auth
@@ -44,14 +52,32 @@ class UserProfilePageState extends State<UserProfilePage> {
   }
 
   Future<void> _fetchUserProfiles() async {
-    final querySnapshot = await FirebaseFirestore.instance
+    final usersSnapshot = await FirebaseFirestore.instance
         .collection(Constants.dbCollectionUsers)
         .get();
-    final users = await Future.wait(querySnapshot.docs.map((doc) async {
+    final String currentUserId = _authService.getCurrentUser()!.uid;
-      final languagesSnapshot =
+
-          await doc.reference.collection(Constants.dbCollectionLanguages).get();
+    // Fetch the list of profiles the current user has already swiped
-      final locationsSnapshot =
+    final QuerySnapshot swipesSnapshot = await FirebaseFirestore.instance
-          await doc.reference.collection(Constants.dbCollectionLocations).get();
+        .collection(Constants.dbCollectionUsers)
+        .doc(currentUserId)
+        .collection(Constants.dbCollectionSwipes)
+        .get();
+    final Set<String> likedUserIds = swipesSnapshot.docs
+        .where((doc) => doc['liked'] == true)
+        .map((doc) => doc.id)
+        .toSet();
+
+    List<UserProfile> allUsers = [];
+    List<UserProfile> showProfiles = [];
+
+    for (var userDoc in usersSnapshot.docs) {
+      final languagesSnapshot = await userDoc.reference
+          .collection(Constants.dbCollectionLanguages)
+          .get();
+      final locationsSnapshot = await userDoc.reference
+          .collection(Constants.dbCollectionLocations)
+          .get();
 
       final languages = languagesSnapshot.docs.map((doc) {
         final data = doc.data();
@@ -63,13 +89,10 @@ class UserProfilePageState extends State<UserProfilePage> {
         );
       }).toList();
 
-      final mainDoc = locationsSnapshot.docs.firstWhereOrNull(
+      final mainDoc = locationsSnapshot.docs
-        (doc) => doc.id == Constants.dbDocMainLocation,
+          .firstWhereOrNull((doc) => doc.id == Constants.dbDocMainLocation);
-      );
+      final secondaryDoc = locationsSnapshot.docs
-      final secondaryDoc = locationsSnapshot.docs.firstWhereOrNull(
+          .firstWhereOrNull((doc) => doc.id == Constants.dbDocSecondLocation);
-        (doc) => doc.id == Constants.dbDocSecondLocation,
-      );
-
       final locations = {
         Constants.dbDocMainLocation:
             mainDoc != null ? _createLocationFromDoc(mainDoc.data()) : null,
@@ -78,9 +101,9 @@ class UserProfilePageState extends State<UserProfilePage> {
             : null,
       };
 
-      final data = doc.data();
+      final data = userDoc.data();
-      return UserProfile(
+      UserProfile userProfile = UserProfile(
-        id: doc.id,
+        id: userDoc.id,
         uid: data[Constants.dbFieldUsersID] ?? '',
         email: data[Constants.dbFieldUsersEmail] ?? '',
         name: data[Constants.dbFieldUsersName] ?? '',
@@ -93,12 +116,22 @@ class UserProfilePageState extends State<UserProfilePage> {
         languages: languages,
         locations: locations,
       );
-    }).toList());
+
+      // add profiles accordingly
+      allUsers.add(userProfile);
+      // Exclude the current user's profile and the already liked profiles
+      if (userDoc.id != currentUserId && !likedUserIds.contains(userDoc.id)) {
+        showProfiles.add(userProfile);
+      }
 
       setState(() {
-      userProfiles = users;
+        userProfiles = allUsers;
+        potentialUserProfiles = showProfiles;
+        currentUserProfile =
+            allUsers.firstWhereOrNull((x) => x.uid == currentUserId);
       });
     }
+  }
 
   MyLocation? _createLocationFromDoc(Map<String, dynamic>? data) {
     if (data == null || data.isEmpty) return null;
@@ -117,7 +150,7 @@ class UserProfilePageState extends State<UserProfilePage> {
 
   void _swipeLeft() {
     _controller.next(
-        swipeDirection: SwipeDirection.left, duration: Durations.extralong4);
+        swipeDirection: SwipeDirection.left, duration: Durations.extralong1);
   }
 
   void _swipeRight() {
@@ -127,7 +160,7 @@ class UserProfilePageState extends State<UserProfilePage> {
 
   void _skip() {
     _controller.next(
-        swipeDirection: SwipeDirection.up, duration: Durations.extralong2);
+        swipeDirection: SwipeDirection.up, duration: Durations.long4);
   }
 
   /// Save swipe status to database
@@ -151,7 +184,7 @@ class UserProfilePageState extends State<UserProfilePage> {
     return userProfiles.firstWhere((x) => x.uid == userId);
   }
 
-  /// Check whether the swiped user has also swiped current user to the right
+  /// Check whether the swiped user has also swiped to the right
   Future<void> _checkForMatch(swipedUserId) async {
     String currentUserId = _authService.getCurrentUser()!.uid;
 
@@ -185,11 +218,8 @@ class UserProfilePageState extends State<UserProfilePage> {
       });
 
       //
-      // TODO Notification and further logic, e.g. initialization of the chat
+      // TODO Notify other user?
       //
-      print(
-          'We have a match between ${getUserProfile(currentUserId).name} and ${getUserProfile(swipedUserId).name}');
-
       showMatchedScreen(currentUserId, swipedUserId);
     }
   }
@@ -228,10 +258,32 @@ class UserProfilePageState extends State<UserProfilePage> {
 
   @override
   Widget build(BuildContext context) {
-    if (userProfiles.isEmpty) {
+    if (potentialUserProfiles.isEmpty) {
       return Scaffold(
         appBar: AppBar(title: const Text('User Profiles')),
-        body: const Center(child: CircularProgressIndicator()),
+        body: Center(
+          child: Padding(
+            padding: const EdgeInsets.all(16.0),
+            child: Column(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                const Icon(Icons.person_search, size: 64),
+                const SizedBox(height: 20),
+                Text(
+                  '${userProfiles.length > 1 ? 'No new' : 'No'} profiles available at the moment.',
+                  style: const TextStyle(
+                      fontWeight: FontWeight.bold, fontSize: 18),
+                ),
+                const SizedBox(height: 60),
+                const Text(
+                  'Please check back later, perhaps tomorrow.',
+                  textAlign: TextAlign.center,
+                  style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18),
+                ),
+              ],
+            ),
+          ),
+        ),
       );
     }
 
@@ -253,13 +305,14 @@ class UserProfilePageState extends State<UserProfilePage> {
                   controller: _controller,
                   stackClipBehaviour: Clip.none,
                   swipeAnchor: SwipeAnchor.bottom,
-                  itemCount: userProfiles.length+1, // +1 for rerun option
+                  // item count +1 for additional end page
+                  itemCount: potentialUserProfiles.length + 1,
                   onSwipeCompleted: (index, direction) {
                     //
-                    // Swipe logic goes here
+                    // Swipe logic
                     //
                     String swipedUserId =
-                        userProfiles[_controller.currentIndex].id;
+                        potentialUserProfiles[_controller.currentIndex].id;
                     if (direction == SwipeDirection.right) {
                       _saveSwipeAction(swipedUserId, SwipeDirection.right);
                       _checkForMatch(swipedUserId);
@@ -269,40 +322,15 @@ class UserProfilePageState extends State<UserProfilePage> {
                   },
                   horizontalSwipeThreshold: 0.8,
                   verticalSwipeThreshold: 0.8,
-                  /*overlayBuilder: (context, properties) {
-                    final opacity = min(properties.swipeProgress, 1.0);
-                    final isRight = properties.direction == SwipeDirection.right;
-                    return Opacity(
-                      opacity: isRight ? opacity : 0,
-                      child: CardLabel.right(),
-                    );
-                  },*/
                   builder: (context, properties) {
-
+                    if (properties.index == potentialUserProfiles.length) {
-                    if (properties.index == userProfiles.length) {
                       return Center(
-                        child: Column( // Show end message and restart button
+                        child: _buildLastCard(), // last card
-                          mainAxisAlignment: MainAxisAlignment.center,
-                          children: [
-                            const Text('That\'s all.\nDo you want to do another run?',
-                              style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold)
-                            ),
-                            const SizedBox(height: 20),
-                            ElevatedButton(
-                              onPressed: () {
-                                setState(() {
-                                  _controller.currentIndex = 0; // Restart swiping from the beginning
-                                });
-                              },
-                              child: const Text('Rerun'),
-                            ),
-                          ],
-                        ),
                       );
                     }
 
-                    final userProfile =
+                    final userProfile = potentialUserProfiles[
-                        userProfiles[properties.index % userProfiles.length];
+                        properties.index % potentialUserProfiles.length];
                     return Container(
                       alignment: Alignment.center,
                       decoration: BoxDecoration(
@@ -311,34 +339,7 @@ class UserProfilePageState extends State<UserProfilePage> {
                       ),
                       child: Stack(
                         children: [
-                          Card(
+                          _buildUserCard(userProfile),
-                            child: Padding(
-                              padding: const EdgeInsets.all(16.0),
-                              child: SingleChildScrollView(
-                                child: Column(
-                                  mainAxisSize: MainAxisSize.min,
-                                  children: [
-                                    Text(userProfile.name,
-                                        style: const TextStyle(fontSize: 24)),
-                                    Text(userProfile.email,
-                                        style: const TextStyle(fontSize: 24)),
-                                    const SizedBox(height: 8),
-                                    Text(
-                                        'Has skills and experience in: ${userProfile.skills.join(', ')}'),
-                                    Text(
-                                        'Seeks someone with skills in: ${userProfile.skillsSought.join(', ')}'),
-                                    Text('Risk type: ${userProfile.risk}'),
-                                    Text(
-                                        'Speaks: ${userProfile.languages.map((lang) => lang.name).join(', ')}'),
-                                    Text(
-                                        'Lives in: ${userProfile.locations['main']?.locality ?? 'N/A'}'),
-                                    Text(
-                                        'Second home: ${userProfile.locations['secondary']?.locality ?? 'N/A'}'),
-                                  ],
-                                ),
-                              ),
-                            ),
-                          ),
                           if (properties.stackIndex == 0 &&
                               properties.direction != null)
                             CardOverlay(
@@ -352,7 +353,78 @@ class UserProfilePageState extends State<UserProfilePage> {
                 ),
               ),
             ),
-            Positioned(
+            _buildSwipeButtons(),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildUserCard(UserProfile userProfile) {
+    return Card(
+      child: Padding(
+        padding: const EdgeInsets.all(16.0),
+        child: SingleChildScrollView(
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Text(userProfile.name, style: const TextStyle(fontSize: 24)),
+              Text(userProfile.email, style: const TextStyle(fontSize: 24)),
+              const SizedBox(height: 8),
+              Text(
+                  'Has skills and experience in: ${userProfile.skills.join(', ')}'),
+              Text(
+                  'Seeks someone with skills in: ${userProfile.skillsSought.join(', ')}'),
+              Text('Risk type: ${userProfile.risk}'),
+              Text(
+                  'Speaks: ${userProfile.languages.map((lang) => lang.name).join(', ')}'),
+              Text(
+                  'Lives in: ${userProfile.locations[Constants.dbDocMainLocation]?.locality ?? 'N/A'}'),
+              Text(
+                  'Second home: ${userProfile.locations[Constants.dbDocSecondLocation]?.locality ?? 'N/A'}'),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildLastCard() {
+    return Padding(
+      padding: const EdgeInsets.all(16.0),
+      child: SingleChildScrollView(
+        child: Column(
+          // Show reached end message and restart button
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            const Icon(Icons.person_search, size: 64),
+            const SizedBox(height: 20),
+            const Text('You\'ve viewed all available profiles.',
+                textAlign: TextAlign.center,
+                style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold)),
+            const SizedBox(height: 60),
+            const Text(
+                'Would you like to do another run and see the remaining profiles again?',
+                textAlign: TextAlign.center,
+                style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold)),
+            const SizedBox(height: 20),
+            ElevatedButton(
+              onPressed: () {
+                setState(() {
+                  // Restart swiping from the beginning
+                  _controller.currentIndex = 0;
+                });
+              },
+              child: const Text('Another run'),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildSwipeButtons() {
+    return Positioned(
       bottom: 16,
       left: 0,
       right: 0,
@@ -360,6 +432,7 @@ class UserProfilePageState extends State<UserProfilePage> {
         mainAxisAlignment: MainAxisAlignment.spaceEvenly,
         children: [
           FloatingActionButton(
+            heroTag: 'myFABUndo',
             tooltip: 'Undo last action',
             shape: const CircleBorder(),
             onPressed: () {
@@ -371,34 +444,59 @@ class UserProfilePageState extends State<UserProfilePage> {
             width: 72,
             height: 72,
             child: FloatingActionButton(
+              heroTag: 'myFABSwipeLeft',
               shape: const CircleBorder(),
               onPressed: _swipeLeft,
-                      child:
+              child: Stack(
-                          const Icon(Icons.cancel, color: Colors.red, size: 64),
+                // to deal with icons inner transparency
+                alignment: Alignment.center,
+                children: [
+                  Container(
+                    width: 48.0,
+                    height: 48.0,
+                    decoration: const BoxDecoration(
+                      color: Colors.white70,
+                      shape: BoxShape.circle,
+                    ),
+                  ),
+                  const Icon(Icons.cancel, color: Colors.red, size: 72),
+                ],
+              ),
             ),
           ),
           SizedBox(
             width: 72,
             height: 72,
             child: FloatingActionButton(
+              heroTag: 'myFABSwipeRight',
               shape: const CircleBorder(),
               onPressed: _swipeRight,
-                      child: const Icon(Icons.check_circle,
+              child: Stack(
-                          color: Colors.green, size: 64),
+                // to deal with icons inner transparency
+                alignment: Alignment.center,
+                children: [
+                  Container(
+                    width: 48.0,
+                    height: 48.0,
+                    decoration: const BoxDecoration(
+                      color: Colors.white70,
+                      shape: BoxShape.circle,
+                    ),
+                  ),
+                  const Icon(Icons.check_circle, color: Colors.green, size: 72),
+                ],
+              ),
             ),
           ),
           FloatingActionButton(
             tooltip: 'Skip profile',
+            heroTag: 'myFABSkip',
             shape: const CircleBorder(),
             onPressed: _skip,
             child: const Icon(Icons.skip_next),
           ),
         ],
       ),
-            ),
-          ],
-        ),
-      ),
     );
   }
 }
@@ -427,9 +525,9 @@ class CardOverlay extends StatelessWidget {
                   : Alignment.center),
           child: Icon(
             direction == SwipeDirection.right
-                ? Icons.check_circle
+                ? Icons.thumb_up
                 : (direction == SwipeDirection.left
-                    ? Icons.cancel
+                    ? Icons.thumb_down
                     : Icons.skip_next),
             size: 100,
             color: direction == SwipeDirection.right