📝 ToDo List iOS App

A modern, feature-rich ToDo List application built with SwiftUI that connects to a RESTful API backend. Manage your tasks efficiently with a clean and intuitive interface.

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✨ Features

• ✅ Create, read, update, and delete todos
• 🔄 Toggle todo completion status
• 📝 Add optional descriptions to todos
• 🎨 Clean and modern SwiftUI interface
• 🔌 RESTful API integration
• ⚡ Async/await for network operations
• 🔔 Error handling with user-friendly alerts
• 📱 Native iOS experience

🎥 Demo

📸 Screenshots

🛠 Technologies Used

• SwiftUI - Modern declarative UI framework
• Combine - Reactive programming framework
• URLSession - Networking with async/await
• MVVM Architecture - Clean separation of concerns
• Codable - JSON encoding/decoding
• @MainActor - Thread-safe UI updates

🏗 Architecture

The app follows the MVVM (Model-View-ViewModel) pattern:

• Model (Todo): Data structure representing a todo item
• View (ContentView, AddTodoView, EditTodoView, TodoRowView): SwiftUI views
• ViewModel (TodoViewModel): Business logic and state management
• Service (TodoService): API communication layer

📋 Requirements

• iOS 15.0+
• Xcode 13.0+
• Swift 5.5+

🚀 Getting Started

Prerequisites

1. Make sure you have Xcode installed
2. Clone the backend repository and set it up:

   git clone https://github.com/DebugWithAryan/ToDoList-Backend-

Installation

1. Clone this repository:

   git clone <your-repo-url>
   cd To-Do-List

2. Open the project in Xcode:

   open To-Do\ List.xcodeproj

3. Update the API endpoint in ContentView.swift if needed:

   private let baseUrl = "https://todoapp-en1q.onrender.com/api/todos"

4. Build and run the project (⌘+R)

🔗 Backend Repository

The backend for this app is built with Node.js and Express. You can find it here:

ToDo List Backend Repository

📱 Usage

Adding a Todo

1. Tap the + button in the navigation bar
2. Enter a title (required)
3. Optionally add a description
4. Tap Add to create the todo

Editing a Todo

1. Tap the pencil icon next to any todo
2. Update the title or description
3. Tap Save to apply changes

Completing a Todo

• Tap the circle icon to mark a todo as complete
• The todo will show a checkmark and strikethrough text

Deleting a Todo

• Tap the trash icon to delete a todo
• The todo will be immediately removed

Refreshing

• Tap the refresh icon in the navigation bar to reload all todos

🌐 API Integration

The app integrates with a RESTful API with the following endpoints:

Method	Endpoint	Description
GET	/api/todos	Fetch all todos
POST	/api/todos	Create a new todo
PUT	/api/todos/:id	Update a todo
DELETE	/api/todos/:id	Delete a todo

🗂 Project Structure

To-Do List/
├── ContentView.swift          # Main views and UI components
├── TodoViewModel.swift        # ViewModel and business logic
└── Assets/                    # App assets and resources

🔑 Key Components

Todo Model

struct Todo: Codable, Identifiable {
    let id: Int?
    let title: String
    let description: String?
    let completed: Bool
    let createdAt: String?
    let updatedAt: String?
}

TodoService

Handles all API communication with async/await:

• fetchTodo() - Get all todos
• createTodo() - Create new todo
• updateTodo() - Update existing todo
• deleteTodo() - Delete todo

TodoViewModel

Manages app state using @Published properties:

• todos - Array of todo items
• isLoading - Loading state
• showError - Error alert state
• errorMessage - Error message content

🎨 UI Components

• ContentView: Main list view with todos
• AddTodoView: Sheet for creating new todos
• EditTodoView: Sheet for editing existing todos
• TodoRowView: Reusable row component for displaying todos

🐛 Error Handling

The app includes comprehensive error handling:

• Network request failures
• JSON parsing errors
• API errors
• User-friendly error messages via alerts

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

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

📝 License

This project is open source and available under the MIT License.

👤 Author

Aryan Jaiswal

• GitHub: @DebugWithAryan

🙏 Acknowledgments

• SwiftUI Documentation
• Apple Developer Resources
• The iOS Development Community

📞 Support

If you have any questions or need help, please open an issue in the repository.

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