Solucion Jaime Sanchez

android/app/build.gradle

@@ -24,6 +24,7 @@ if (flutterVersionName == null) {
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+apply plugin: 'com.google.gms.google-services'
 
 android {
     compileSdkVersion 29
@@ -43,6 +44,7 @@ android {
         targetSdkVersion 29
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
+        multiDexEnabled true
     }
 
     buildTypes {
@@ -60,4 +62,7 @@ flutter {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'androidx.multidex:multidex:2.0.1'
+    implementation platform('com.google.firebase:firebase-bom:26.1.0')
+    implementation 'com.google.firebase:firebase-analytics'
 }

android/app/google-services.json

@@ -0,0 +1,39 @@
+{
+  "project_info": {
+    "project_number": "849645478782",
+    "project_id": "flutter-in-the-dark-jsgala",
+    "storage_bucket": "flutter-in-the-dark-jsgala.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:849645478782:android:bc8821689b471fc3a1492f",
+        "android_client_info": {
+          "package_name": "com.example.chat_flutter_in_the_dark"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "849645478782-vbn2202q4j94ohpmol471qibg501guni.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyAYpKjwyaehMyClwKCzIEE7O0qRLeUB4fo"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "849645478782-vbn2202q4j94ohpmol471qibg501guni.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}

android/build.gradle

@@ -8,6 +8,7 @@ buildscript {
     dependencies {
         classpath 'com.android.tools.build:gradle:3.5.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath 'com.google.gms:google-services:4.3.4'
     }
 }
 

android/gradle.properties

@@ -1,3 +1,4 @@
 org.gradle.jvmargs=-Xmx1536M
 android.useAndroidX=true
 android.enableJetifier=true
+android.enableR8=true

lib/main.dart

@@ -1,11 +1,20 @@
 import 'package:chat_flutter_in_the_dark/src/app/error_app.dart';
 import 'package:chat_flutter_in_the_dark/src/app/loaded_app.dart';
 import 'package:chat_flutter_in_the_dark/src/app/loading_app.dart';
+import 'package:chat_flutter_in_the_dark/src/provider/chat_provider.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
 
 void main() {
-  runApp(MyApp());
+  runApp(
+    MultiProvider(
+      providers: [
+        ChangeNotifierProvider(create: (_) => ChatState()),
+      ],
+      child: MyApp(),
+    ),
+  );
 }
 
 class MyApp extends StatelessWidget {

lib/src/models/chat_model.dart

@@ -0,0 +1,6 @@
+import 'package:flutter/foundation.dart';
+
+class ChatModel extends ChangeNotifier{
+  String title;
+  String id;
+}

lib/src/models/message_model.dart

@@ -0,0 +1,5 @@
+import 'package:flutter/foundation.dart';
+
+class MessageModel extends ChangeNotifier{
+  String text;
+}

lib/src/pages/home.dart

@@ -1,31 +1,35 @@
-import 'package:chat_flutter_in_the_dark/src/bloc/chat/chat_bloc.dart';
+import 'package:chat_flutter_in_the_dark/src/models/chat_model.dart';
 import 'package:chat_flutter_in_the_dark/src/pages/chat.dart';
+import 'package:chat_flutter_in_the_dark/src/provider/chat_provider.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:provider/provider.dart';
 
 class HomePage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(title: Text('LISTADO DE CHATS'), backgroundColor: Colors.lime[800],),
-      body: BlocBuilder<ChatBloc, ChatState>(
-        builder: (context, state) {
-          if (state is FetchingChats) return Center(child: CircularProgressIndicator());
-          if (state is ErrorFetchingChats) return Center(child: Text('Error'));
-          if (state is FetchedChats)
+      body: Builder(
+        builder: (context) {
+          context.watch<ChatState>().fetchChats();
+          List<ChatModel> chats = context.watch<ChatState>().chats;
+          chatStates state = context.watch<ChatState>().state;
+          if (state == chatStates.fetching) return Center(child: CircularProgressIndicator());
+          if (state == chatStates.error) return Center(child: Text('Error'));
+          if (state == chatStates.fetched)
             return ListView.builder(
-              itemCount: state.chats.length,
+              itemCount: chats.length,
               itemBuilder: (context, index) => GestureDetector(
                 onTap: () => Navigator.push(
                   context,
-                  MaterialPageRoute(builder: (context) => ChatPage(chat: state.chats[index])),
+                  MaterialPageRoute(builder: (context) => ChatPage(chat: chats[index])),
                 ),
                 child: Container(
                   height: 100,
                   color: Colors.lime[300],
                   child: Center(
                       child:
-                          Text(state.chats[index].title, style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold))),
+                          Text(chats[index].title, style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold))),
                 ),
               ),
             );

lib/src/provider/chat_provider.dart

@@ -0,0 +1,15 @@
+import 'package:chat_flutter_in_the_dark/src/models/chat_model.dart';
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:flutter/foundation.dart';
+
+enum chatStates { fetching, error, fetched }
+
+class ChatState extends ChangeNotifier {
+  chatStates state = chatStates.fetching;
+  List<ChatModel> chats;
+
+  void fetchChats(){
+    FirebaseFirestore.instance.collection('chats').snapshots();
+  }
+
+}

lib/src/repositories/chat_repository.dart

@@ -0,0 +1,13 @@
+import 'package:chat_flutter_in_the_dark/src/models/message_model.dart';
+
+class ChatRepository{
+  // Se cogen los mensajes del repositorio
+  Stream<List<MessageModel>> getMessages(String chatId){
+
+  }
+
+  // Se envian los mensajes al repositorio
+  void sendMessage(String chatId, String message){
+
+  }
+}

pubspec.lock

@@ -156,6 +156,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.0-nullsafety.3"
+  nested:
+    dependency: transitive
+    description:
+      name: nested
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.0.4"
   path:
     dependency: transitive
     description:
@@ -177,6 +184,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.3"
+  provider:
+    dependency: "direct main"
+    description:
+      name: provider
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.3.2+2"
   quiver:
     dependency: transitive
     description:
@@ -247,4 +261,4 @@ packages:
     version: "2.1.0-nullsafety.3"
 sdks:
   dart: ">=2.10.0-110 <2.11.0"
-  flutter: ">=1.12.13+hotfix.5 <2.0.0"
+  flutter: ">=1.16.0 <2.0.0"

pubspec.yaml

@@ -30,6 +30,7 @@ dependencies:
   cupertino_icons: ^1.0.0
   firebase_core: ^0.5.0
   cloud_firestore: "^0.14.1+1"
+  provider: ^4.3.2+2
 
 dev_dependencies:
   flutter_test: