to-do

import os

TASKS_FILE = "tasks.txt"

def load_tasks():
    if not os.path.exists(TASKS_FILE):
        return []
    with open(TASKS_FILE, "r") as file:
        return [line.strip() for line in file.readlines()]

def save_tasks(tasks):
    with open(TASKS_FILE, "w") as file:
        for task in tasks:
            file.write(task + "\n")

def show_tasks(tasks):
    if not tasks:
        print("✅ No tasks in your to-do list.")
    else:
        print("\n📝 Your To-Do List:")
        for i, task in enumerate(tasks, 1):
            print(f"{i}. {task}")
    print()

def add_task(tasks):
    task = input("Enter a new task: ")
    tasks.append(task)
    save_tasks(tasks)
    print("✔️ Task added.\n")

def delete_task(tasks):
    show_tasks(tasks)
    try:
        index = int(input("Enter the number of the task to delete: "))
        if 1 <= index <= len(tasks):
            removed = tasks.pop(index - 1)
            save_tasks(tasks)
            print(f"🗑️ Removed: {removed}\n")
        else:
            print("❌ Invalid task number.\n")
    except ValueError:
        print("❌ Please enter a valid number.\n")

def main():
    tasks = load_tasks()
    while True:
        print("📌 To-Do List Options:")
        print("1. View tasks")
        print("2. Add task")
        print("3. Delete task")
        print("4. Exit")
        choice = input("Choose an option (1-4): ")

        if choice == "1":
            show_tasks(tasks)
        elif choice == "2":
            add_task(tasks)
        elif choice == "3":
            delete_task(tasks)
        elif choice == "4":
            print("👋 Goodbye!")
            break
        else:
            print("❌ Invalid option. Try again.\n")

if __name__ == "__main__":
    main()