Development

Getting Started

Prerequisites

• Node.js 22.0.0 or higher
• npm 10.0.0 or higher
• AWS CLI configured
• Git
• VS Code (recommended)

Initial Setup

1. Clone the repository:

git clone https://github.com/redwan-cse/multi-platform-bot-system.git
cd multi-platform-bot-system

2. Install dependencies:

npm install

3. Set up environment:

cp .env.example .env

Development Workflow

1. Create feature branch:

git checkout -b feature/your-feature-name

2. Run development environment:

npm run dev

3. Run tests while developing:

npm run test:watch

Code Structure

Directory Organization

src/
├── lambda/          # Lambda function handlers
├── types/          # TypeScript definitions
├── utils/          # Shared utilities
└── worker.js       # Cloudflare Worker

Key Files

• src/lambda/*.js: AWS Lambda function handlers
• src/types/*.js: Type definitions
• src/utils/*.js: Shared utility functions
• src/worker.js: Cloudflare Worker script

Coding Standards

TypeScript Guidelines

• Use TypeScript JSDoc comments for type safety
• Enable strict type checking
• Document all public interfaces
• Use type inference where possible

Code Style

• Use ES modules (import/export)
• Follow ESLint configuration
• Use async/await for promises
• Document complex logic
• Write unit tests for new features

Error Handling

try {
  await someAsyncOperation();
} catch (error) {
  console.error('Operation failed:', error);
  throw new Error('Friendly error message');
}

Logging Guidelines

• Use appropriate log levels
• Include relevant context
• Don't log sensitive data
• Structure logs for easy parsing

Testing

Unit Tests

describe('MyFunction', () => {
  it('should handle successful case', async () => {
    // Arrange
    const input = {};
    
    // Act
    const result = await myFunction(input);
    
    // Assert
    expect(result).toBeDefined();
  });
});

Integration Tests

• Test end-to-end flows
• Mock external services
• Verify database operations
• Test error scenarios

Test Coverage

• Maintain 80% coverage minimum
• Focus on critical paths
• Test edge cases
• Mock external dependencies

Adding New Features

Platform Integration

1. Create handler in src/lambda/
2. Define types in src/types/
3. Add utility functions in src/utils/
4. Update configuration
5. Write tests
6. Update documentation

Database Schema Updates

1. Update type definitions
2. Modify utility functions
3. Create migration script
4. Update backup logic
5. Test changes
6. Document changes

Debugging

Local Development

• Use VS Code debugger
• Set breakpoints
• Inspect variables
• Step through code

Production Issues

• Check CloudWatch logs
• Monitor metrics
• Use correlation IDs
• Enable debug logging

Performance Optimization

Code Level

• Use async operations
• Implement caching
• Optimize database queries
• Minimize dependencies

Infrastructure Level

• Configure auto-scaling
• Optimize memory allocation
• Use provisioned capacity
• Enable caching

Security Best Practices

Code Security

• Validate input
• Sanitize output
• Use parameterized queries
• Implement rate limiting

Infrastructure Security

• Use least privilege
• Enable encryption
• Rotate credentials
• Monitor access logs

Deployment Process

Development

1. Write code
2. Run tests
3. Create PR
4. Review changes
5. Merge to main

Staging

1. Automated deployment
2. Run integration tests
3. Monitor performance
4. Verify functionality

Production

1. Create release
2. Deploy to production
3. Monitor metrics
4. Verify functionality

Contributing Guidelines

Pull Requests

1. Create feature branch
2. Make changes
3. Write tests
4. Update documentation
5. Create PR
6. Address reviews

Code Review

• Check functionality
• Verify tests
• Review documentation
• Check performance
• Validate security

Resources

Documentation

• AWS Lambda
• DynamoDB
• Cloudflare Workers
• Discord API
• Telegram Bot API
• Meta Platform API

Tools

• Node.js
• TypeScript
• Jest
• ESLint
• VS Code