Pomodoro Timer Web Application

A responsive web-based Pomodoro timer application built to help users manage their time using the Pomodoro Technique. This project was created as part of issue #1 to demonstrate a complete web application with modern responsive design.

Features

Core Functionality

• 25-minute work sessions with visual countdown timer
• 5-minute short breaks between work sessions
• 15-minute long breaks after every 4 work sessions
• Session counter to track completed Pomodoros
• Start/Pause/Reset controls for timer management

User Interface

• Responsive design that works on desktop, tablet, and mobile
• Visual progress indicator with animated circular progress ring
• Clean, modern interface with intuitive controls
• Session type indicators with color-coded themes
• Smooth animations and transitions

Customization

• Adjustable timer durations for work and break periods
• Auto-start options for seamless workflow
• Sound notifications with mute/unmute capability
• Settings persistence using browser localStorage

Getting Started

Running the Application

1. Simple HTTP Server (Python):

   python3 server.py

   Then visit: http://localhost:12000

2. Alternative - Any HTTP Server:

   # Using Python's built-in server
   python3 -m http.server 8000
   
   # Using Node.js http-server (if installed)
   npx http-server

File Structure

├── index.html          # Main application HTML
├── styles.css          # Responsive CSS styles
├── script.js           # JavaScript application logic
├── server.py           # Simple Python HTTP server
├── PRD.md             # Product Requirements Document
├── tests/             # Test suite
│   ├── test.html      # Browser-based test runner
│   ├── test-suite.js  # Comprehensive test suite
│   └── simple-test.js # Core functionality tests
└── README.md          # This file

Usage

1. Start a Session: Click the "Start" button to begin a 25-minute work session
2. Pause/Resume: Click "Pause" to pause the timer, "Start" to resume
3. Reset: Click "Reset" to restart the current session
4. Settings: Click "Settings" to customize timer durations and preferences
5. Session Flow: The app automatically transitions between work and break sessions

Keyboard Shortcuts

• Spacebar: Start/Pause the timer

Technical Details

Responsive Design

• Mobile-first approach with progressive enhancement
• CSS Grid and Flexbox for flexible layouts
• Breakpoints:
  • Mobile: < 480px
  • Tablet: 480px - 768px
  • Desktop: > 768px

Browser Compatibility

• Modern browsers (Chrome, Firefox, Safari, Edge)
• Mobile browsers (iOS Safari, Chrome Mobile)
• Uses Web Audio API for notifications
• localStorage for settings persistence

Performance

• Lightweight vanilla JavaScript (no frameworks)
• Minimal resource usage
• Fast loading times
• Smooth 60fps animations

Testing

The application includes comprehensive tests covering:

Core Functionality Tests

cd tests
node simple-test.js

Tests include:

• Timer logic and time formatting
• Session duration calculations
• Progress calculation accuracy
• Session switching logic

Browser Tests

Open tests/test.html in a browser to run the full test suite including:

• Timer initialization
• Settings persistence
• State management
• Progress ring calculations

Development

Architecture

• Class-based JavaScript with clear separation of concerns
• Event-driven design for user interactions
• State management for timer and session tracking
• Modular CSS with responsive design patterns

Key Components

• PomodoroTimer class: Main application logic
• Progress ring SVG: Visual timer representation
• Settings modal: User customization interface
• Responsive layout: Mobile-first design system

Future Enhancements

See PRD.md for detailed future feature plans including:

• Session statistics and analytics
• Task integration and notes
• Browser notifications
• Progressive Web App (PWA) capabilities
• Custom themes and colors

Contributing

This project follows standard web development practices:

1. Test your changes using the provided test suite
2. Ensure responsive design works across devices
3. Maintain clean, readable code
4. Update tests for new functionality

License

This project is part of the Test-Open-Hands-AI repository for demonstrating AI-assisted development capabilities.