A comprehensive Flutter TODO application built with modern architecture and state management.

• ✅ Create Tasks: Add new tasks with title and description
• ✅ Read Tasks: View all tasks in a clean, organized list
• ✅ Update Tasks: Edit existing tasks and toggle completion status
• ✅ Delete Tasks: Remove individual tasks or bulk delete completed tasks

• Task Properties: Each task has a unique ID, title, description, and completion status
• Task States: Tasks can be either "active" (incomplete) or "completed"
• Timestamps: Automatic creation and update timestamps for each task

• Quick Filtering: Filter tasks by All, Active, or Completed status
• Task Statistics: View counts of total, active, and completed tasks
• Visual Indicators: Clear visual distinction between completed and active tasks

• Modern UI: Clean, Material Design 3 interface
• Responsive Design: Optimized for mobile devices
• Local Storage: Tasks persist between app sessions using SharedPreferences
• Confirmation Dialogs: Safe deletion with confirmation prompts
• Snackbar Feedback: User-friendly success and error messages

• Provider Pattern: Uses the Provider package for efficient state management
• ChangeNotifier: TaskProvider extends ChangeNotifier for reactive updates
• Separation of Concerns: Clear separation between UI and business logic

lib/
├── main.dart                 # App entry point and theme configuration
├── models/
│   ├── task.dart            # Task data model with JSON serialization
│   └── task_filter.dart     # Filter enum and extensions
├── providers/
│   └── task_provider.dart   # State management for tasks
├── screens/
│   ├── home_screen.dart     # Main screen with task list
│   ├── add_task_screen.dart # Screen for creating new tasks
│   └── edit_task_screen.dart # Screen for editing existing tasks
└── widgets/
    ├── task_list.dart       # List widget for displaying tasks
    ├── task_tile.dart       # Individual task display widget
    ├── filter_chips.dart    # Filter selection chips
    └── task_stats.dart      # Statistics display widget

• SharedPreferences: Local storage for task persistence
• JSON Serialization: Tasks are serialized to JSON for storage
• Automatic Loading: Tasks are loaded on app startup

• flutter: Flutter SDK
• provider: ^6.1.2: State management
• uuid: ^4.5.1: Unique ID generation
• shared_preferences: ^2.3.2: Local data persistence
• cupertino_icons: ^1.0.8: iOS-style icons

• Flutter SDK (3.8.1 or higher)
• Dart SDK
• Android Studio / VS Code with Flutter extensions

1. Clone the repository
2. Navigate to the project directory
3. Install dependencies:

   flutter pub get

4. Run the application:

   flutter run

1. Tap the floating action button (+) on the home screen
2. Enter a task title (required)
3. Optionally add a description
4. Tap "Save Task"

• Toggle Completion: Tap the checkbox next to any task
• Edit Task: Tap on a task or use the menu to edit
• Delete Task: Use the menu (⋮) to delete individual tasks
• Bulk Delete: Use the delete icon in the app bar to remove all completed tasks

• Use the filter chips at the top to view:
  • All: All tasks
  • Active: Incomplete tasks only
  • Completed: Completed tasks only

• Comprehensive Comments: Well-documented code with clear explanations
• Type Safety: Strong typing throughout the application
• Error Handling: Proper error handling with user feedback
• Validation: Input validation for task creation and editing

• Efficient Rebuilds: Provider pattern minimizes unnecessary widget rebuilds
• Lazy Loading: Tasks are loaded only when needed
• Memory Management: Proper disposal of controllers and resources

• Modular Design: Easy to add new features or modify existing ones
• Separation of Concerns: Clear boundaries between different layers
• Reusable Components: Widgets are designed for reusability

Potential features that could be added:

• Task categories/tags
• Due dates and reminders
• Task priorities
• Search functionality
• Dark mode theme
• Task sharing/export
• Cloud synchronization

This project is created as part of a Flutter challenge and is available for educational purposes.