Se implementa funcionalidad básica de chat

3 files changed, 200 insertions, 2 deletions

diff --git a/lib/screens/chat_screen.dart b/lib/screens/chat_screen.dart
new file mode 100644
index 0000000..d67e469
--- /dev/null
+++ b/lib/screens/chat_screen.dart
@@ -0,0 +1,97 @@
+import 'package:flutter/material.dart';
+import 'package:linkchat/firebase/auth.dart';
+import 'package:linkchat/firebase/database.dart';
+import 'package:linkchat/models/group.dart';
+
+import '../models/message.dart';
+import '../models/user.dart';
+import '../widgets/chat_bottom_sheet.dart';
+import '../widgets/chat_bubble.dart';
+
+class ChatScreen extends StatefulWidget {
+  const ChatScreen({super.key});
+
+  @override
+  State<ChatScreen> createState() => _ChatScreenState();
+}
+
+class _ChatScreenState extends State<ChatScreen> {
+  bool init = false;
+  Group? group;
+  FsUser? user;
+  final Auth _auth = Auth();
+  final Database _db = Database();
+
+  @override
+  Widget build(BuildContext context) {
+    List<dynamic> arguments =
+        ModalRoute.of(context)?.settings.arguments as List<dynamic>;
+    group = arguments[0] as Group;
+    user = arguments[1] as FsUser;
+
+    return Scaffold(
+      appBar: PreferredSize(
+        preferredSize: const Size.fromHeight(70.0),
+        child: Padding(
+          padding: const EdgeInsets.only(top: 5),
+          child: AppBar(
+            leadingWidth: 30,
+            title: Row(
+              children: [
+                ClipRRect(
+                    borderRadius: BorderRadius.circular(30),
+                    child: CircleAvatar(
+                      backgroundImage: NetworkImage(user!.photoUrl),
+                    )),
+                Padding(
+                  padding: const EdgeInsets.only(left: 10),
+                  child: Text(user!.displayName),
+                ),
+              ],
+            ),
+            actions: const [
+              Padding(
+                padding: EdgeInsets.only(right: 10),
+                child: Icon(
+                  Icons.more_vert,
+                ),
+              )
+            ],
+          ),
+        ),
+      ),
+      body: StreamBuilder(
+        stream: _db.getMessagesByGroupId(group!.id!),
+        builder: (context, snapshot) {
+          if (snapshot.hasData) {
+            List<Message> msgs = snapshot.data!;
+            return ListView.builder(
+              itemCount: snapshot.data!.length,
+              itemBuilder: (context, index) => ChatBubble(
+                msgs[index].messageText,
+                alignment: msgs[index].sentBy == _auth.currentUser?.uid
+                    ? ChatBubbleAlignment.end
+                    : ChatBubbleAlignment.start,
+              ),
+            );
+          } else if (snapshot.hasError) {
+            print('Error: ${snapshot.error}');
+            return const Center(child: Text('Hubo un error'));
+          }
+          return const Center(child: CircularProgressIndicator());
+        },
+      ),
+      bottomSheet: ChatBottomSheet(
+        onPressed: (value) {
+          _db.saveMessage(
+              Message(
+                messageText: value,
+                sentBy: _auth.currentUser!.uid,
+                sentAt: DateTime.now(),
+              ),
+              group!.id!);
+        },
+      ),
+    );
+  }
+}
diff --git a/lib/screens/dashboard_screen.dart b/lib/screens/dashboard_screen.dart
index cb31a58..778c2bb 100644
--- a/lib/screens/dashboard_screen.dart
+++ b/lib/screens/dashboard_screen.dart
@@ -4,6 +4,7 @@ import 'package:provider/provider.dart';
 import '../firebase/auth.dart';
 import '../providers/theme_provider.dart';
 import '../settings/themes.dart';
+import '../widgets/recent_chats.dart';
 
 class DashboardScreen extends StatefulWidget {
   const DashboardScreen({super.key});
@@ -30,8 +31,9 @@ class _DashboardScreenState extends State<DashboardScreen> {
           SliverAppBar.large(
             title: const Text('Inicio'),
           ),
-          const SliverFillRemaining(
-            child: Placeholder(),
+          SliverFillRemaining(
+            hasScrollBody: true,
+            child: RecentChats(),
           ),
         ],
       ),
diff --git a/lib/screens/new_chat_screen.dart b/lib/screens/new_chat_screen.dart
new file mode 100644
index 0000000..7b7721f
--- /dev/null
+++ b/lib/screens/new_chat_screen.dart
@@ -0,0 +1,99 @@
+import 'package:flutter/material.dart';
+import 'package:linkchat/firebase/database.dart';
+import 'package:linkchat/models/group.dart';
+
+import '../firebase/auth.dart';
+import '../models/user.dart';
+
+class NewChatScreen extends StatefulWidget {
+  const NewChatScreen({super.key});
+
+  @override
+  State<NewChatScreen> createState() => _NewChatScreenState();
+}
+
+class _NewChatScreenState extends State<NewChatScreen> {
+  final Auth _auth = Auth();
+  final Database _db = Database();
+  final TextEditingController _controller = TextEditingController();
+  List<FsUser> users = [];
+  List<FsUser> filteredUsers = [];
+
+  @override
+  void initState() {
+    super.initState();
+    _db.getAllUsers().first.then((u) {
+      setState(() {
+        users = u;
+        filteredUsers = u;
+      });
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('Nuevo chat'),
+        leading: IconButton(
+          icon: const Icon(Icons.arrow_back),
+          onPressed: () {
+            Navigator.of(context).pop();
+          },
+        ),
+      ),
+      body: Column(
+        children: [
+          TextField(
+            controller: _controller,
+            decoration: const InputDecoration(
+              border: OutlineInputBorder(),
+              labelText: 'Nombre del contacto',
+            ),
+            onChanged: (value) {
+              setState(() {
+                if (value.isNotEmpty) {
+                  filteredUsers = users
+                      .where((user) => user.displayName.contains(value))
+                      .toList();
+                } else {
+                  filteredUsers = users;
+                }
+              });
+            },
+          ),
+          ListView.builder(
+            shrinkWrap: true,
+            itemCount: filteredUsers.length,
+            itemBuilder: (context, index) {
+              FsUser user = filteredUsers[index];
+              return ListTile(
+                leading: CircleAvatar(
+                  backgroundImage: NetworkImage(user.photoUrl),
+                ),
+                title: Text(user.displayName),
+                trailing: IconButton(
+                  icon: const Icon(Icons.send),
+                  onPressed: () {
+                    _db
+                        .saveGroup(Group(
+                      createdBy: _auth.currentUser!.uid,
+                      createdAt: DateTime.now(),
+                      members: [
+                        _auth.currentUser!.uid,
+                        user.uid,
+                      ],
+                    ))
+                        .whenComplete(() {
+                      Navigator.of(context).pop();
+                    });
+                  },
+                ),
+              );
+            },
+          ),
+        ],
+      ),
+    );
+  }
+}