545563e776
- Complete NestJS TypeScript implementation with WebSocket support - Direct messaging (DM) and group chat functionality - End-to-end encryption with AES encryption and key pairs - Media file support (images, videos, audio, documents) up to 100MB - Push notifications with Firebase Cloud Messaging integration - Mention alerts and real-time typing indicators - User authentication with JWT and Passport - SQLite database with TypeORM entities and relationships - Comprehensive API documentation with Swagger/OpenAPI - File upload handling with secure access control - Online/offline status tracking and presence management - Message editing, deletion, and reply functionality - Notification management with automatic cleanup - Health check endpoint for monitoring - CORS configuration for cross-origin requests - Environment-based configuration management - Structured for Flutter SDK integration Features implemented: ✅ Real-time messaging with Socket.IO ✅ User registration and authentication ✅ Direct messages and group chats ✅ Media file uploads and management ✅ End-to-end encryption ✅ Push notifications ✅ Mention alerts ✅ Typing indicators ✅ Message read receipts ✅ Online status tracking ✅ File access control ✅ Comprehensive API documentation Ready for Flutter SDK development and production deployment.
47 lines
677 B
JavaScript
47 lines
677 B
JavaScript
'use strict';
|
|
const {Transform} = require('stream');
|
|
|
|
class ObjectTransform extends Transform {
|
|
constructor() {
|
|
super({
|
|
objectMode: true
|
|
});
|
|
}
|
|
}
|
|
|
|
class FilterStream extends ObjectTransform {
|
|
constructor(filter) {
|
|
super();
|
|
this._filter = filter;
|
|
}
|
|
|
|
_transform(data, encoding, callback) {
|
|
if (this._filter(data)) {
|
|
this.push(data);
|
|
}
|
|
|
|
callback();
|
|
}
|
|
}
|
|
|
|
class UniqueStream extends ObjectTransform {
|
|
constructor() {
|
|
super();
|
|
this._pushed = new Set();
|
|
}
|
|
|
|
_transform(data, encoding, callback) {
|
|
if (!this._pushed.has(data)) {
|
|
this.push(data);
|
|
this._pushed.add(data);
|
|
}
|
|
|
|
callback();
|
|
}
|
|
}
|
|
|
|
module.exports = {
|
|
FilterStream,
|
|
UniqueStream
|
|
};
|