Flutter Supabase Chat Core: Powering Real-Time Chat in Flutter Apps

Published on by Flutter News Hub

Flutter Supabase Chat Core: Powering Real-Time Chat in Flutter Apps

In this modern era, real-time chat is an indispensable feature for any mobile application. The Flutter Supabase Chat Core package provides a comprehensive solution for building chat functionality into Flutter apps, leveraging the power of Supabase, a robust and scalable backend platform.

Key Features

  • Seamless integration with Supabase for user management, database storage, and real-time event handling.
  • Customizable chat UI using the popular flutter_chat_ui package.
  • Support for multiple message types, including text, images, files, and audio.
  • Row-level security (RLS) to ensure data privacy and compliance.
  • Cross-platform compatibility for iOS, Android, web, and desktop.

Implementation

Integrating the Flutter Supabase Chat Core into your app is straightforward. Simply follow these steps:

1. Install the Package

dependencies:
  flutter_supabase_chat_core: ^latest_version

2. Initialize Supabase

final supabase = Supabase.client(
  url: 'https://your-project.supabase.co',
  secretKey: 'your-secret-key',
);

3. Create a Stream for Messages

Stream messagesStream =
    supabase.from('messages').stream().map((resp) => resp.as());

4. Send a Message

supabase.from('messages').insert(
  {'content': 'Hello, world!', 'room_id': 1},
).execute();

Customization Options

The Flutter Supabase Chat Core provides various customization options to tailor the chat experience to your specific needs:

  • Chat UI: Use the provided chat UI widget or integrate your own custom design.
  • Message Types: Implement custom message types to support different content formats.
  • Security Rules: Configure RLS rules to control user permissions for viewing and modifying data.

Additional Features

In addition to its core functionality, the Chat Core also supports several advanced features:

  • User Online Status: Monitor the online status of users for real-time presence indicators.
  • Chat Room Management: Create, manage, and participate in different chat rooms with customizable settings.
  • File Storage: Store and retrieve files using Supabase's robust storage system.

Conclusion

The Flutter Supabase Chat Core is a powerful and versatile solution for implementing real-time chat functionality in Flutter applications. Its seamless integration with Supabase, customizable options, and cross-platform compatibility make it an ideal choice for building engaging and interactive chat experiences.

Code Examples

Initialize Supabase and Create a Stream for Messages:

import 'package:flutter_chat_core/flutter_chat_core.dart';
import 'package:flutter_chat_types/flutter_chat_types.dart';
import 'package:supabase_flutter/supabase_flutter.dart';

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final supabase = Supabase.client(
      url: 'https://your-project.supabase.co',
      secretKey: 'your-secret-key',
    );

    final messagesStream = supabase
        .from('messages')
        .stream()
        .map((resp) => resp.as());

    return MaterialApp(
      home: Scaffold(
        body: StreamBuilder(
          stream: messagesStream,
          builder: (context, snapshot) {
            if (snapshot.hasData) {
              return ListView.separated(
                itemCount: snapshot.data!.length,
                itemBuilder: (context, index) =>
                    MessageItem(message: snapshot.data![index]),
                separatorBuilder: (context, index) => Divider(),
              );
            } else {
              return const Center(child: Text('Loading...'));
            }
          },
        ),
      ),
    );
  }
}

Send a Message:

import 'package:flutter_chat_core/flutter_chat_core.dart';
import 'package:supabase_flutter/supabase_flutter.dart';

Future sendMessage(String message, int roomId) async {
  final supabase = Supabase.client(
    url: 'https://your-project.supabase.co',
    secretKey: 'your-secret-key',
  );

  await supabase
      .from('messages')
      .insert({'content': message, 'room_id': roomId})
      .execute();
}
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