Lab03: REST API Chat System with HTTP Status Codes - Mashchenko Pavel

[PavMash]

Lab03: REST API Chat System with HTTP Status Codes

Overview:

Implemented backend and frontend for chatting app

What was implemented:

Go backend component:

• Implemented handlers for REST API endpoints
• Implemented storage logic for messsages
• Created model-classes for message, HTTP requests and responses
• Passed all backend tests

Flutter frontend component:

• Implemented UI for chatting app
• Implemented API connector for the app

How to test:

Backend testing

1. cd labs/lab02/backend
2. go mod tidy
3. go test ./...

Frontend testing

1. cd labs/lab02/frontend
2. flutter pub get
3. flutter test

Checklist:

• All tests pass
• Code passes linting
• Both Go and Flutter components work
• README updated if necessary
• Follows course coding standards

[github-actions]

Lab 03 Test Results - REST API Chat System

🎯 Score: 3/6 (50%)

📚 Getting started! Focus on implementing the basic structures first.

📋 Task Completion:

Go Backend Tasks

• ✅ Message Models & Validation
• ✅ Memory Storage CRUD
• ✅ HTTP API Handlers

Flutter Frontend Tasks

• ❌ API Service Integration
• ❌ Chat Screen UI
• ❌ Integration Test

🔧 Component Details:

Backend (Go):

• Models: Message struct, validation, JSON serialization
• Storage: In-memory CRUD operations with thread safety
• Handlers: REST endpoints (GET, POST, PUT, DELETE) + HTTP Cat API

Frontend (Flutter):

• API Service: HTTP client with error handling and timeouts
• Chat Screen: Message list, CRUD operations, loading/error states
• Integration Test: Integration with HTTP Cat API for status visualization

💡 Next Steps:

• Implement HTTP client methods and error handling
• Build chat UI with message operations and state management
• Integrate HTTP Cat API for status code visualization

🐱 HTTP Cat Integration

Make sure to test different status codes: 200 (OK), 404 (Not Found), 418 (I'm a teapot), 500 (Server Error)
Visit http.cat to see all available status cats! 🐱