day 5.py

todo_app = "file.txt"


def add_task():
    task = input("Enter task: ")

    if task == "":
        print("Task can't be empty ❌")
        return

    with open(todo_app, "a") as file:
        file.write(task + "\n")

    print("Task added successfully ✅")


def view_task():
    try:
        with open(todo_app, "r") as file:
            tasks = file.readlines()

        if len(tasks) == 0:
            print("No task found 📭")
            return

        print("\n--- Your Tasks ---")
        for i, task in enumerate(tasks, start=1):
            print(f"{i}. {task.strip()}")

    except FileNotFoundError:
        print("No tasks yet 📭")


def delete_task():
    try:
        with open(todo_app, "r") as file:
            tasks = file.readlines()

        if len(tasks) == 0:
            print("No task found ❌")
            return

        view_task()
        num = int(input("Enter task number: "))

        if num < 1 or num > len(tasks):
            print("Invalid task number ❌")
            return

        tasks.pop(num - 1)

        with open(todo_app, "w") as file:
            file.writelines(tasks)

        print("Task deleted successfully 🗑️")

    except FileNotFoundError:
        print("No task found ❌")


while True:
    print("\n=== TO-DO APP ===")
    print("1. Add Task")
    print("2. View Tasks")
    print("3. Delete Task")
    print("4. Exit")

    choice = input("Enter choice: ")

    if choice == "1":
        add_task()
    elif choice == "2":
        view_task()
    elif choice == "3":
        delete_task()
    elif choice == "4":
        print("Goodbye 👋")
        break
    else:
        print("Invalid choice ❌")