📱 JetCode - Interactive Kotlin & Android Learning Platform

An Interactive Learning Mobile Application for mastering Kotlin and Android Development through curated flashcard-style content, comprehensive quizzes, and progress tracking. Built with modern Android development practices using Clean Architecture, MVI pattern, and Jetpack Compose.

📱 Screenshots

Onboarding	Skills Dashboard	Skill Detail	Topic Learning

Topic Completed	Practice Quiz	Result Statistics	Profile & Settings

✨ Core Features

🎯 Interactive Learning System

• Diverse Material Types:
  • 📝 TEXT: Summarized knowledge in flashcard format
  • 📄 MARKDOWN: Formatted technical documentation
  • 💻 CODE: Interactive Kotlin/Android code examples
  • 🖼️ IMAGE: Visual diagrams and illustrations
  • 🎥 VIDEO: Tutorial and demonstration content
• Curated Content: Focus on Kotlin and Android application development

🧠 Comprehensive Practice System

• 📊 MCQ: Multiple Choice Questions
• ✏️ FILL_BLANK: Code completion challenges
• Difficulty-Based Practice: Adaptive difficulty levels
• Timed Quizzes: Built-in timer for skill assessment
• Detailed Results: Complete answers with explanations
• Standalone Practice Bundles: Independent quiz collections

📊 Progress Tracking & Analytics

• Skill Progress: Visual progress indicators for each skill
• Topic Completion: Track materials completed per topic
• Learning Statistics: Comprehensive learning analytics
• Quiz Performance: Detailed quiz activity and results history
• Achievement System: Progress milestones and achievements

🎨 Modern User Experience

• Material Design 3: Latest design system implementation
• Dynamic Theming: Multiple color schemes with system preference
• Dark/Light Mode: Seamless theme switching
• Responsive Design: Optimized for various screen sizes
• Smooth Navigation: Intuitive app flow and transitions

🏗️ Content Architecture

📚 Learning Hierarchy

🎯 Skills (Kotlin & Android Development)
├── 📖 Topics (Specific areas like "Coroutines", "Compose UI")
│   ├── 📄 Materials (Text, Code, Video, Images)
│   └── 🧩 Practice Bundle (Topic-specific quizzes)
└── 📊 Progress Tracking (Completion percentage)

🧩 Quiz System

🎮 Practice Bundles
├── 📝 MCQ Questions
├── 💻 Code Challenges  
├── 🔮 Output Prediction
├── ✏️ Fill in the Blanks
├── ⏱️ Timer System
└── 📊 Results & Explanations

🛠️ Technical Implementation

🏗️ Architecture Overview

┌─────────────────────────────────────────────────────────────┐
│                     Presentation Layer                     │
│  ┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐ │
│  │   📱 Compose UI  │ │  🎯 ViewModels  │ │ 🧭 Navigation  │ │
│  └─────────────────┘ └─────────────────┘ └─────────────────┘ │
└─────────────────────────────────────────────────────────────┘
                               │
┌─────────────────────────────────────────────────────────────┐
│                      Domain Layer                          │
│  ┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐ │
│  │   🔄 Use Cases  │ │   🏛️ Repository │ │   📋 Models    │ │
│  └─────────────────┘ └─────────────────┘ └─────────────────┘ │
└─────────────────────────────────────────────────────────────┘
                               │
┌─────────────────────────────────────────────────────────────┐
│                       Data Layer                           │
│  ┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐ │
│  │  🌐 Remote API  │ │  💾 Local DB    │ │ 🔧 Data Sources│ │
│  └─────────────────┘ └─────────────────┘ └─────────────────┘ │
└─────────────────────────────────────────────────────────────┘

🧩 Modular Structure

📦 JetCode/
├── 📱 app/                          # Main application module
├── 🎯 features/                     # Feature modules
│   ├── learning/                    # Skills, Topics, Materials
│   ├── onboarding/                  # User onboarding flow
│   ├── practice/                    # Quiz and practice system
│   └── profile/                     # User profile & statistics
├── 🏗️ core/                        # Core shared modules
│   ├── analytics/                   # Learning analytics
│   ├── common/                      # Shared utilities
│   ├── designsystem/                # Material Design 3 theming
│   ├── network/                     # API communication
│   └── ui/                          # Shared UI components
├── 💾 data/                         # Data layer modules
│   ├── database/                    # Local caching (Room)
│   └── repository/                  # Data management
└── 🏛️ domain/                       # Business logic & models

📋 Domain Models

// Core content hierarchy
Skill → Topic → Material
     → PracticeSet → Quiz

// Material types: TEXT, MARKDOWN, CODE, IMAGE, VIDEO
// Quiz types: MCQ, CODE_CHALLENGE, OUTPUT_PREDICTION, FILL_BLANK
// Difficulty levels: Beginner, Intermediate, Advanced

🔧 Technologies & Libraries

🏗️ Architecture & Pattern

• 🏛️ Clean Architecture: Clear separation of concerns
• 🔄 MVI Pattern: Unidirectional data flow
• 🧩 Multi-module: Scalable architecture
• 💉 Koin: Dependency injection

🎨 UI & Design

• 🎨 Jetpack Compose: Modern declarative UI
• 🧭 Navigation Compose: Type-safe navigation
• 🎨 Material Design 3: Latest design system
• 🌙 Dynamic Theming: Color schemes & dark/light mode
• 🖼️ Coil: Efficient image loading

💾 Data & Storage

• 🏠 Room Database: Local data persistence
• 💾 DataStore: User preferences management
• 🌐 Ktor Client: HTTP client for content loading
• 📄 Kotlinx Serialization: Type-safe JSON handling

⚡ Async & Background

• 🔄 Kotlin Coroutines: Asynchronous programming
• 🔄 Kotlin Flow: Reactive data streams
• ⚙️ WorkManager: Background content sync

🧪 Testing & Quality

• 🧪 JUnit 4: Unit testing framework
• 🎭 MockK: Kotlin mocking library
• 🧪 Compose Testing: UI testing
• 🔍 Detekt: Static code analysis
• 🎨 Ktlint: Code formatting

🚀 Getting Started

Prerequisites

• Android Studio: Flamingo or newer
• JDK: 11 or higher
• Android SDK: API 24+ (Android 7.0)
• Gradle: 8.11.0

🛠️ Installation

1. Clone the repository

   git clone https://github.com/yourusername/jetcode.git
   cd jetcode

2. Open in Android Studio

   • Launch Android Studio
   • Select "Open an existing project"
   • Navigate to the cloned directory

3. Sync and build

   ./gradlew build

4. Run the application

   • Select your device/emulator
   • Click "Run" or use Ctrl+R (Windows/Linux) / Cmd+R (Mac)

🔧 Build Commands

# Debug build
./gradlew assembleDebug

# Release build
./gradlew assembleRelease

# Run tests
./gradlew test

# Code quality checks
./gradlew detekt ktlintCheck

🎯 App Flow & Navigation

📱 User Journey

1. Onboarding: Introduction to the learning platform
2. Skills Dashboard: Browse available Kotlin/Android skills
3. Skill Details: View topics within selected skill
4. Topic Learning: Study materials (text, code, videos)
5. Practice Quiz: Test knowledge with various quiz types
6. Results & Progress: Review performance and track progress
7. Profile: View statistics and customize settings

🧭 Navigation Structure

Onboarding → Skills List → Skill Detail → Topic Detail → Practice
                ↓              ↓             ↓           ↓
            Profile ←──────────────────────────────── Results

📊 Key Dependencies

Category	Library	Version	Purpose
Kotlin	Kotlin	2.0.21	Programming language
Build	AGP	8.11.0	Android Gradle Plugin
UI	Compose BOM	2024.09.00	UI toolkit
Navigation	Navigation Compose	2.8.0	App navigation
DI	Koin	3.5.6	Dependency injection
Network	Ktor	2.3.12	HTTP client
Database	Room	2.6.1	Local storage
Testing	MockK	1.13.12	Testing framework

🤝 Contributing

We welcome contributions! Please follow these steps:

📋 Development Workflow

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

🧪 Code Quality

• Run ./gradlew detekt for static analysis
• Run ./gradlew ktlintCheck for code formatting
• Ensure all tests pass with ./gradlew test
• Follow Kotlin coding conventions

📄 License

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

📞 Support

• 📚 Documentation
• 🐛 Report Issues
• 💬 Discussions

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