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.
88 lines
1.9 KiB
JavaScript
88 lines
1.9 KiB
JavaScript
/* eslint-disable no-underscore-dangle */
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'use strict';
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const fs = require('fs');
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const crypto = require('crypto');
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const { EventEmitter } = require('events');
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class PersistentFile extends EventEmitter {
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constructor({ filepath, newFilename, originalFilename, mimetype, hashAlgorithm }) {
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super();
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this.lastModifiedDate = null;
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Object.assign(this, { filepath, newFilename, originalFilename, mimetype, hashAlgorithm });
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this.size = 0;
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this._writeStream = null;
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if (typeof this.hashAlgorithm === 'string') {
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this.hash = crypto.createHash(this.hashAlgorithm);
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} else {
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this.hash = null;
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}
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}
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open() {
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this._writeStream = new fs.WriteStream(this.filepath);
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this._writeStream.on('error', (err) => {
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this.emit('error', err);
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});
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}
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toJSON() {
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const json = {
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size: this.size,
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filepath: this.filepath,
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newFilename: this.newFilename,
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mimetype: this.mimetype,
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mtime: this.lastModifiedDate,
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length: this.length,
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originalFilename: this.originalFilename,
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};
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if (this.hash && this.hash !== '') {
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json.hash = this.hash;
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}
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return json;
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}
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toString() {
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return `PersistentFile: ${this.newFilename}, Original: ${this.originalFilename}, Path: ${this.filepath}`;
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}
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write(buffer, cb) {
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if (this.hash) {
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this.hash.update(buffer);
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}
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if (this._writeStream.closed) {
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cb();
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return;
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}
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this._writeStream.write(buffer, () => {
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this.lastModifiedDate = new Date();
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this.size += buffer.length;
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this.emit('progress', this.size);
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cb();
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});
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}
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end(cb) {
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if (this.hash) {
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this.hash = this.hash.digest('hex');
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}
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this._writeStream.end(() => {
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this.emit('end');
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cb();
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});
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}
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destroy() {
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this._writeStream.destroy();
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fs.unlink(this.filepath, () => {});
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}
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}
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module.exports = PersistentFile;
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