Todo App

A modern, full-stack todo application built with Next.js 15, TypeScript, ConvexDB, and Clerk authentication. Features real-time synchronization, category organization, and a beautiful responsive UI.

✨ Features

✅ Real-time Synchronization - Changes sync instantly across all devices
✅ Secure Authentication - Powered by Clerk.js with social login support
✅ Category Organization - Organize todos with customizable categories
✅ Progress Tracking - Visual progress bars and completion statistics
✅ Responsive Design - Works perfectly on desktop, tablet, and mobile
✅ TypeScript - Full type safety throughout the application
✅ Modern UI - Built with Tailwind CSS and shadcn/ui components
✅ Database - Real-time database with ConvexDB
✅ API - RESTful API with comprehensive documentation

🚀 Quick Start

Prerequisites

Node.js 18.0 or higher
npm, bun, or yarn package manager
Git

Installation

Clone the repository
```
git clone <repository-url>
cd todo-app
```
Install dependencies
```
npm install
# or
bun install
```

Set up environment variables

cp .env.example .env.local

Edit .env.local with your credentials:

NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY=pk_test_your_key
CLERK_SECRET_KEY=sk_test_your_secret
NEXT_PUBLIC_CONVEX_URL=https://your-deployment.convex.cloud
NEXT_PUBLIC_APP_URL=http://localhost:3000

Set up Clerk Authentication
- Create account at Clerk Dashboard
- Create a new application
- Copy API keys to your .env.local
Set up Convex Database
```
npx convex dev --once
npx convex deploy
```
Run the development server
```
npm run dev
# or
bun dev
```
Open your browser
- Navigate to http://localhost:3000
- Sign up for a new account or sign in

📖 Documentation

User Guides

User Guide - Complete user manual with screenshots and examples
Setup Guide - Step-by-step setup instructions for development and production
Deployment Guide - Deploy to Vercel, Netlify, AWS, and more

Developer Documentation

API Documentation - Complete API reference with examples
Best Practices - Development guidelines and patterns
Troubleshooting - Common issues and solutions

Project Documentation

Product Requirements - Product vision and requirements
Research Notes - Technical research and decisions
Calendar Sync - Calendar integration documentation

🛠️ Tech Stack

Frontend

Next.js 15 - React framework with App Router
TypeScript - Type-safe JavaScript
Tailwind CSS - Utility-first CSS framework
shadcn/ui - Modern UI components
Lucide Icons - Beautiful icon library

Backend

ConvexDB - Real-time database
Clerk - Authentication and user management
Next.js API Routes - Server-side functionality

Development Tools

ESLint - Code linting
Prettier - Code formatting
Jest - Unit testing
Playwright - End-to-end testing
Vitest - Fast unit testing

📁 Project Structure

todo-app/
├── app/                    # Next.js app router pages
│   ├── api/               # API routes
│   ├── profile/           # User profile page
│   ├── sign-in/           # Authentication pages
│   ├── sign-up/
│   └── todos/             # Main todos page
├── components/            # Reusable React components
│   ├── ui/               # shadcn/ui components
│   └── AuthGuard.tsx     # Authentication guard
├── convex/               # ConvexDB backend
│   ├── todos.ts          # Todo operations
│   ├── categories.ts     # Category operations
│   ├── schema.ts         # Database schema
│   └── auth.config.js    # Authentication config
├── docs/                 # Documentation
├── lib/                  # Utility functions
├── public/               # Static assets
└── tests/                # Test files

🔧 Available Scripts

# Development
npm run dev          # Start development server
npm run build        # Build for production
npm run start        # Start production server
npm run lint         # Run ESLint

# Testing
npm test            # Run unit tests
npm run test:ui     # Run tests with UI
npm run test:coverage # Generate coverage report

# Database
npx convex dev       # Start Convex development
npx convex deploy    # Deploy Convex functions
npx convex dashboard # Open Convex dashboard

# Verification
node verify-auth-setup.js # Verify authentication setup

🚀 Deployment

Vercel (Recommended)

Connect your repository to Vercel
Add environment variables in Vercel dashboard
Deploy automatically on every push to main

Other Platforms

Netlify
Railway
AWS
Docker

🔐 Authentication

The app uses Clerk for authentication with the following features:

Email/Password authentication
Social login (Google, GitHub, etc.)
User profiles with avatars
Session management
Secure API access

💾 Database Schema

Users Table

{
  _id: Id<"users">
  clerkId: string
  email: string
  name?: string
  createdAt: number
}

Categories Table

{
  _id: Id<"categories">
  userId: Id<"users">
  name: string
  color: string
  createdAt: number
}

Todos Table

{
  _id: Id<"todos">
  userId: Id<"users">
  categoryId?: Id<"categories">
  title: string
  description?: string
  completed: boolean
  createdAt: number
  updatedAt: number
}

🧪 Testing

Unit Tests

npm test

End-to-End Tests

npx playwright test

Test Coverage

npm run test:coverage

🤝 Contributing

Fork the repository
Create a feature branch: git checkout -b feature/your-feature
Make your changes and add tests
Run the test suite: npm test
Commit your changes: git commit -m 'Add your feature'
Push to the branch: git push origin feature/your-feature
Open a Pull Request

Development Guidelines

Follow the existing code style
Write comprehensive tests
Update documentation as needed
Use TypeScript for all new code
Follow conventional commit messages

📊 Performance

Lighthouse Score: 95+ on all metrics
First Contentful Paint: < 1.5s
Time to Interactive: < 3s
Bundle Size: < 200KB gzipped

🔒 Security

HTTPS Only: All communications encrypted
Secure Headers: CSP, HSTS, and other security headers
Input Validation: All inputs validated and sanitized
Authentication: JWT-based secure authentication
Authorization: Row-level security with ConvexDB

📈 Analytics & Monitoring

Vercel Analytics: Built-in performance monitoring
Convex Dashboard: Database monitoring and logs
Clerk Dashboard: Authentication monitoring
Error Tracking: Sentry integration for error monitoring

🐛 Troubleshooting

Common Issues

Authentication not working
- Check Clerk configuration
- Verify environment variables
- Clear browser cache
Database connection issues
- Verify Convex URL
- Check network connectivity
- Review Convex dashboard
Build failures
- Check Node.js version (18+)
- Clear node_modules and reinstall
- Check for TypeScript errors

See Troubleshooting Guide for detailed solutions.

📚 Resources

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🙏 Acknowledgments

Next.js Team for the amazing framework
Convex for the real-time database
Clerk for authentication
shadcn for the beautiful UI components
Tailwind CSS for the styling system

📞 Support

Documentation: docs/
Issues: GitHub Issues
Discussions: GitHub Discussions

Happy todo-ing! 🎉

Name		Name	Last commit message	Last commit date
Latest commit History 2 Commits
.claude/agents		.claude/agents
.serena		.serena
app		app
components		components
convex		convex
docs		docs
lib		lib
public		public
tests		tests
.gitignore		.gitignore
.prettierignore		.prettierignore
.prettierrc		.prettierrc
AGENTS.md		AGENTS.md
README.md		README.md
TEST_ORGANIZATION_SUMMARY.md		TEST_ORGANIZATION_SUMMARY.md
bun.lock		bun.lock
cache-handler.js		cache-handler.js
components.json		components.json
eslint.config.mjs		eslint.config.mjs
jest.config.ts		jest.config.ts
middleware.ts		middleware.ts
next.config.ts		next.config.ts
package-lock.json		package-lock.json
package.json		package.json
playwright.config.ts		playwright.config.ts
postcss.config.mjs		postcss.config.mjs
tsconfig.json		tsconfig.json
vercel.json		vercel.json
verify-auth-setup.js		verify-auth-setup.js
vitest.config.ts		vitest.config.ts

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