Automated Action 545563e776 Implement comprehensive real-time chat API with NestJS
- 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.
2025-06-21 17:13:05 +00:00
..

proto3 JSON serializer for TypeScript / JavaScript

This library implements proto3 JSON serialization and deserialization for protobuf.js protobuf objects according to the spec.

Note that the spec requires special representation of some google.protobuf.* types (Value, Struct, Timestamp, Duration, etc.), so you cannot just use .toObject() since the result won't be understood by protobuf in other languages. Hence this module.

JavaScript:

const serializer = require('proto3-json-serializer');

TypeScript:

import * as serializer from 'proto3-json-serializer';

Serialization: protobuf.js object to proto3 JSON

const root = protobuf.loadSync('test.proto');
const Type = root.lookupType('test.Message');
const message = Type.fromObject({...});

const serialized = serializer.toProto3JSON(message);

Serialization works with any object created by calling .create(), .decode(), or .fromObject() for a loaded protobuf type. It relies on the $type field so it will not work with a static object.

Deserialization: proto3 JSON to protobuf.js object

To deserialize an object from proto3 JSON, we must know its type (as returned by root.lookupType('...')). Pass this type as the first parameter to .fromProto3JSON:

const root = protobuf.loadSync('test.proto');
const Type = root.lookupType('test.Message');
const json = {...};

const deserialized = serializer.fromProto3JSON(Type, json);

Complete example

const assert = require('assert');
const path = require('path');
const protobuf = require('protobufjs');
const serializer = require('proto3-json-serializer');

// We'll take sample protos from google-proto-files but the code will work with any protos
const protos = require('google-proto-files');

// Load some proto file
const rpcProtos = protos.getProtoPath('rpc');
const root = protobuf.loadSync([
    path.join(rpcProtos, 'status.proto'),
    path.join(rpcProtos, 'error_details.proto'),
]);
const Status = root.lookupType('google.rpc.Status');

// If you have a protobuf object that follows proto3 JSON syntax
// https://developers.google.com/protocol-buffers/docs/proto3#json
// (this is an example of google.rpc.Status message in JSON)
const json = {
    code: 3,
    message: 'Test error message',
    details: [
        {
            '@type': 'google.rpc.BadRequest',
            fieldViolations: [
                {
                    field: 'field',
                    description: 'must not be null',
                },
            ],
        },
    ],
};

// You can deserialize it into a protobuf.js object:
const deserialized = serializer.fromProto3JSON(Status, json);
console.log(deserialized);

// And serialize it back
const serialized = serializer.toProto3JSON(deserialized);
assert.deepStrictEqual(serialized, json);

Disclaimer

This is not an officially supported Google project.