CLI-todo

A simple and efficient command-line interface (CLI) application for managing your to-do tasks.
Built using Node.js, it provides essential task management operations like adding, listing, marking complete, and deleting tasks — all from your terminal!

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✨ Features

• Add Tasks: Instantly add a new task to your list.
• View Tasks: List all your pending and completed tasks clearly.
• Mark as Completed: Update any task's status to completed.
• Delete Tasks: Remove specific tasks by ID.
• Persistent Storage: Tasks are saved locally in a todos.json file.
• Colorful Output: Uses chalk for enhanced visual feedback in the terminal.
• Error Handling: Gracefully handles file reading/writing issues.
• Auto Reindexing: After deletion, IDs are automatically reordered for clarity.

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⚙️ Technologies Used

• Node.js – Core platform
• Commander.js – For easy CLI command parsing
• Chalk – For colorful and readable terminal output
• fs (File System module) – For reading and writing JSON data

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🚀 Installation

1. Clone the repository:

   git clone https://github.com/aerinpatel/CLI-todo.git
   cd CLI-todo

2. Install dependencies:

   npm install

3. Run the CLI:

   node index.js

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📖 Usage

Command	Description
node index.js add "<task>"	Add a new todo task
node index.js list	List all todo tasks
node index.js check <id>	Mark a specific task as completed
node index.js delete <id>	Delete a task by its ID

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🔥 Highlights of the Code

• Loading and Saving Todos:

  • loadTodos() reads todos.json. If it fails, it returns an empty array with a friendly error message.
  • saveTodos(todos) writes the updated todos array back to the file, ensuring persistence.

• Adding Tasks:
  Adds a new task with an id, task description, and a default completed: false.

• Listing Tasks:
  Displays all tasks, differentiating completed and pending using colored indicators ([x] for done, [ ] for pending).

• Marking Completed:
  Updates the completed flag of a task based on its ID.

• Deleting Tasks:
  Deletes a task by ID, and reindexes all subsequent tasks to maintain a neat ID sequence.

• Program Setup:
  Configured with .name(), .description(), and .version() using Commander.js for a professional CLI feel.

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📂 Project Structure

CLI-todo/
│
├── index.js        # Main CLI application file
├── todos.json      # Stores tasks persistently
├── package.json    # Project metadata and dependencies
└── README.md       # Project documentation

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📋 Example

$ node index.js add "Finish homework"
Todo added: "Finish homework"

$ node index.js list
Your Todos:
1. [ ] Finish homework

$ node index.js check 1
Todo 1 marked as completed.

$ node index.js list
Your Todos:
1. [x] Finish homework

$ node index.js delete 1
Todo with ID 1 deleted.

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🙌 Contributing

If you find any issues or have suggestions for improvements, feel free to open an issue or submit a pull request!

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Would you also like me to create badges (like npm version, License, etc.) and a small demo GIF for this CLI? 🚀
It would make your README look even more professional! 🎯
Let me know!