🗂️ Task Manager (Python + JSON + Chatbot)

A beginner-friendly, interactive command-line Task Manager built with Python. It stores tasks in a JSON file and supports adding, displaying, marking tasks as completed, deleting tasks, and auto-saving changes — now with a simple chatbot interface 🤖✨

🚀 Features

• 📂 Persistent storage using JSON files
• 👤 Personalized experience (asks for your name)
• 🤖 Chatbot-style interaction (type commands like "add", "show", "delete")
• ➕ Add new tasks with validation
  1. Unique task number
  2. Description length between 5–30 characters
• 📋 Display tasks in a neat tabular format
• ✅ Mark tasks as completed
• 🗑️ Delete tasks
• 💾 Auto-save after every change
• 🖥️ Interactive loop (type exit to quit)

🧰 Requirements

• Python 3.10+ (uses match statement if menu mode enabled)
• No external libraries required
• Works on Windows / macOS / Linux

▶️ How to Run

• cmd: python TaskManager.py

• You will be prompted: 👤 Enter your name: Kedar

• If the JSON file doesn’t exist, it will be created automatically:

   1. 📁 File not found. Creating new task file...
   2. ✅ New file created successfully!
  

🤖 Chatbot Commands

• Instead of using numbers, you can type:

+------------------------------------+
|  Command	   --->       Action     |
+------------------------------------+
|  hi, hello    |	 Greet the bot   |
+------------------------------------+
|  menu	        |       Show menu    |
+------------------------------------+
|  add	        |    Add a new task  |
+------------------------------------+
| show, display	|     Display tasks  |
+------------------------------------+
|  mark, done	| Mark task completed|
+------------------------------------+
| delete,remove |   Delete task      |
+------------------------------------+
| exit, quit    |  Exit program      |
+------------------------------------+

🖥️ Example Interaction

✨ *************[ Welcome Kedar To TO-DO List App ]************* ✨
You:  Hi Bot
Bot: Welcome back Kedar! ✨
You:  Can you show me tasklist.
Bot: 📭 No tasks available. Add one!
You:  Then add new task
Bot: 
🔢 Enter task number:  1
📝 Enter task description:  Add another features
💾 Task list updated successfully!
🚀 Task added successfully!
You:  now show me tasklist

Bot: 
📋 Your Task List
Task No.  Description                   Status    
--------------------------------------------------
1         Add another features          ⏳ Pending

You:  mark it complete
Bot: 
✔️ Enter task number to mark complete:  1
💾 Task list updated successfully!
🎉 Task marked as completed!

You:  show
Bot: 
📋 Your Task List
Task No.  Description                   Status    
--------------------------------------------------
1         Add another features          ✅ Done  

You:  delete
Bot: 
🗑️ Enter task number to delete:  1
💾 Task list updated successfully!
🗑️ Task 1 deleted successfully!

You:  show
Bot: 📭 No tasks available. Add one!

You:  quit
👋 Goodbye Kedar! See you soon! ✨
📁 JSON File Format

Tasks are stored in this structure:

{
    "tasks": [
        {
            "Task_No": 1,
            "Description": "Buy groceries",
            "Status": false
        },
        {
            "Task_No": 2,
            "Description": "Finish report",
            "Status": true
        }
    ]
}

🧠 What This Project Demonstrates

1. Object-Oriented Programming (OOP)
2. File Handling in Python
3. JSON Read/Write operations
4. Exception Handling
5. Input Validation
6. Basic Command Parsing (Chatbot Logic)
7. Clean CLI Formatting

🔮 Future Improvements

• 📅 Add due dates
• 🏷️ Add priority levels
• 🔍 Search tasks
• 🎨 Add colored terminal output
• 🖼️ Convert to GUI (Tkinter)
• 🌐 Convert to Web App (Flask / Django)

🛠️ Troubleshooting

• Not writing to file → Ensure you enter a valid file path when prompted. The program will create the file if it doesn’t exist, but the directory must exist.
• Old version runs when importing → Delete the __pycache__ folder or run with python -B. Use print(TaskManager.__file__) to confirm which file is being imported.