second

android/app/build.gradle

@@ -22,11 +22,12 @@ if (flutterVersionName == null) {
 }
 
 apply plugin: 'com.android.application'
+apply plugin: 'com.google.gms.google-services'
 apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion flutter.compileSdkVersion
+    compileSdkVersion 33
     ndkVersion flutter.ndkVersion
 
     compileOptions {
@@ -39,10 +40,11 @@ android {
         applicationId "com.example.connector"
         // You can update the following values to match your application needs.
         // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
-        minSdkVersion flutter.minSdkVersion
+        minSdkVersion 23
         targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
+        multiDexEnabled true
     }
 
     buildTypes {
@@ -57,3 +59,9 @@ android {
 flutter {
     source '../..'
 }
+
+dependencies {
+    // Import the Firebase BoM
+    implementation platform('com.google.firebase:firebase-bom:31.2.3')
+
+}

android/app/google-services.json

@@ -0,0 +1,47 @@
+{
+  "project_info": {
+    "project_number": "161225848235",
+    "project_id": "connector-71f47",
+    "storage_bucket": "connector-71f47.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:161225848235:android:c8d4df7ae7c1e12e748eee",
+        "android_client_info": {
+          "package_name": "com.example.connector"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "161225848235-blfn2vatpgbjdi5q8rorft3cmgnobmg6.apps.googleusercontent.com",
+          "client_type": 1,
+          "android_info": {
+            "package_name": "com.example.connector",
+            "certificate_hash": "a2267a3dcdf7bebeb0d5ffb54dea2e640e680994"
+          }
+        },
+        {
+          "client_id": "161225848235-aq3s7thct6vohut7g1kvdb9s3t7u4k9t.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyB5SWT-ufPTXgxFQAIp7F0ndIPqMXHLB2E"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "161225848235-aq3s7thct6vohut7g1kvdb9s3t7u4k9t.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}

android/app/src/main/AndroidManifest.xml

@@ -1,5 +1,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.example.connector">
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.INTERNET" />
    <application
         android:label="connector"
         android:name="${applicationName}"

android/build.gradle

@@ -8,6 +8,7 @@ buildscript {
     dependencies {
         classpath 'com.android.tools.build:gradle:7.1.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath 'com.google.gms:google-services:4.3.15'
     }
 }
 

lib/Pages/chat_page.dart

@@ -0,0 +1,83 @@
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:flutter/material.dart';
+
+import '../Widgets/message_text_field.dart';
+import '../Widgets/single_message.dart';
+
+class ChatPage extends StatelessWidget {
+  final String currentUserId;
+  final String friendId;
+  final String friendName;
+  final String friendImage;
+
+  ChatPage({
+    required this.currentUserId,
+    required this.friendId,
+    required this.friendName,
+    required this.friendImage,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.blue,
+        title: Row(
+          children: [
+            ClipRRect(
+              borderRadius: BorderRadius.circular(80),
+              child:  CachedNetworkImage(
+                imageUrl:friendImage,
+                placeholder: (conteext,url)=>CircularProgressIndicator(),
+                errorWidget: (context,url,error)=>Icon(Icons.error,),
+                height: 40,
+              ),
+            ),
+            SizedBox(width: 5,),
+            Text(friendName,style: TextStyle(fontSize: 20),)
+          ],
+        ),
+      ),
+
+      body: Column(
+        children: [
+          Expanded(child: Container(
+            padding: EdgeInsets.all(10),
+            decoration: BoxDecoration(
+                color: Colors.white,
+                borderRadius: BorderRadius.only(
+                    topLeft: Radius.circular(25),
+                    topRight: Radius.circular(25)
+                )
+            ),
+            child: StreamBuilder(
+                stream: FirebaseFirestore.instance.collection("users").doc(currentUserId).collection('messages').doc(friendId).collection('chats').orderBy("date",descending: true).snapshots(),
+                builder: (context,AsyncSnapshot snapshot){
+                  if(snapshot.hasData){
+                    if(snapshot.data.docs.length < 1){
+                      return Center(
+                        child: Text("Say Hi"),
+                      );
+                    }
+                    return ListView.builder(
+                        itemCount: snapshot.data.docs.length,
+                        reverse: true,
+                        physics: BouncingScrollPhysics(),
+                        itemBuilder: (context,index){
+                          bool isMe = snapshot.data.docs[index]['senderId'] == currentUserId;
+                          return SingleMessage(message: snapshot.data.docs[index]['message'], isMe: isMe);
+                        });
+                  }
+                  return Center(
+                      child: CircularProgressIndicator()
+                  );
+                }),
+          )),
+          MessageTextField(currentUserId, friendId),
+        ],
+      ),
+
+    );
+  }
+}

lib/Pages/home_page.dart

@@ -0,0 +1,85 @@
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:connector/Pages/chat_page.dart';
+import 'package:firebase_auth/firebase_auth.dart';
+import 'package:flutter/material.dart';
+
+
+class HomePage extends StatefulWidget {
+  @override
+  _HomePageState createState() => _HomePageState();
+}
+
+class _HomePageState extends State<HomePage> {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: Colors.grey[300],
+      body: StreamBuilder(
+          stream: FirebaseFirestore.instance.collection('users').doc('${FirebaseAuth.instance.currentUser?.uid}').collection('messages').snapshots(),
+          builder: (context,AsyncSnapshot snapshot){
+            print("Hello world");
+            if(snapshot.hasData){
+              if(snapshot.data.docs.length < 1){
+                return Center(
+                  child: Text("No Chats Available !"),
+                );
+              }
+              print("Hello world");
+              return ListView.builder(
+                  itemCount: snapshot.data.docs.length,
+                  itemBuilder: (context,index){
+                    print("Hello Worlds");
+                    var friendId = snapshot.data.docs[index].id;
+                    var lastMsg = snapshot.data.docs[index]['last_msg'];
+                    return FutureBuilder(
+                      future: FirebaseFirestore.instance.collection('users').doc(friendId).get(),
+                      builder: (context,AsyncSnapshot asyncSnapshot){
+                        print("Hello Worlds");
+                        if(asyncSnapshot.hasData){
+                          print("He;;p world");
+                          var friend = asyncSnapshot.data.data();
+                          print("Help world");
+                          return Card(
+                            child: ListTile(
+                              leading: ClipRRect(
+                                borderRadius: BorderRadius.circular(80),
+                                child: CachedNetworkImage(
+                                  imageUrl:friend['photourl']??'',
+                                  placeholder: (conteext,url)=>CircularProgressIndicator(),
+                                  errorWidget: (context,url,error)=>Icon(Icons.error,),
+                                  height: 50,
+                                ),
+                              ),
+                              shape: RoundedRectangleBorder(
+                                borderRadius: BorderRadius.circular(10),
+                              ),
+                              selectedTileColor: Colors.black87,
+                              title: Text(friend['username'],style: TextStyle(fontWeight: FontWeight.bold)),
+                              subtitle: Container(
+                                child: Text("$lastMsg",style: TextStyle(color: Colors.grey),overflow: TextOverflow.ellipsis,),
+                              ),
+                              onTap: (){
+                                Navigator.push(context, MaterialPageRoute(builder: (context)=>ChatPage(
+                                    currentUserId: '${FirebaseAuth.instance.currentUser?.uid}'??'',
+                                    friendId: friend['uid']??'',
+                                    friendName: friend['username']??'',
+                                    friendImage: friend['photourl']??'')));
+                              },
+                            ),
+                          );
+                        }
+                        return LinearProgressIndicator(valueColor: AlwaysStoppedAnimation<Color>(Colors.black));
+                      },
+
+                    );
+                  });
+            }
+            return Center(child: CircularProgressIndicator(valueColor: AlwaysStoppedAnimation<Color>(Colors.black)),);
+          }),
+
+
+
+    );
+  }
+}

lib/Pages/profile_page.dart

@@ -0,0 +1,92 @@
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:connector/Screens/my_text_field.dart';
+import 'package:connector/Screens/sign_out_button.dart';
+import 'package:connector/Widgets/update_profile_button.dart';
+import 'package:firebase_auth/firebase_auth.dart';
+import 'package:firebase_core/firebase_core.dart';
+import 'package:flutter/material.dart';
+
+import '../Screens/splash_screen.dart';
+import '../Screens/update_profile_screen.dart';
+import '../Widgets/save_button.dart';
+
+class ProfilePage extends StatefulWidget {
+  @override
+  State<ProfilePage> createState() => _ProfilePageState();
+}
+
+class _ProfilePageState extends State<ProfilePage> {
+  User? user = FirebaseAuth.instance.currentUser;
+
+  @override
+  Widget build(BuildContext context) {
+    final usernameController = TextEditingController();
+    final emailController = TextEditingController();
+    final passwordController1 = TextEditingController();
+    final passwordController2 = TextEditingController();
+    final passwordController3 = TextEditingController();
+    return Scaffold(
+        backgroundColor: Colors.grey[300],
+      body:SafeArea(
+        child: Center(
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+
+            children: [
+
+              //const SizedBox(height: 60),
+          CachedNetworkImage(
+                imageUrl:'${user?.photoURL}'??'',
+                placeholder: (conteext,url)=>CircularProgressIndicator(),
+                errorWidget: (context,url,error)=>Icon(Icons.error,),
+                imageBuilder: (context, imageProvider) => Container(
+                  width: 130.0,
+                  height: 130.0,
+                  decoration: BoxDecoration(
+                    shape: BoxShape.circle,
+                    image: DecorationImage(
+                        image: imageProvider, fit: BoxFit.cover),
+                  ),
+                ),
+              ),
+              const SizedBox(height: 20),
+              Text('${user?.displayName}',style: TextStyle(
+                fontSize: 20,
+                fontWeight: FontWeight.bold,
+              )),
+              const SizedBox(height: 30),
+              UpdateProfileButton(onTap: updateProfile),
+              const SizedBox(height: 20),
+              SignOutButton(onTap: signUserOut)
+            ],
+          ),
+        ),
+      )
+    );
+  }
+
+  signUserOut() async{
+    // Initialize Firebase Auth
+    final FirebaseAuth _auth = FirebaseAuth.instance;
+
+   // Sign out the user
+    await _auth.signOut();
+    Navigator.pushReplacement<void, void>(
+      context,
+      MaterialPageRoute<void>(
+        builder: (BuildContext context) =>SplashScreen(),
+      ),
+    );
+  }
+
+
+
+  updateProfile() {
+    Navigator.pushReplacement<void, void>(
+      context,
+      MaterialPageRoute<void>(
+        builder: (BuildContext context) =>UpdateProfileScreen(),
+      ),
+    );
+  }
+}