TodoApp

todoApp.js

// Simple Todo Application 
const readlineSync = require('readline-sync');
const { listTodos, markTodoCompleted, addTodo } = require('./todoFunctions')


function displayMenu() {
    console.log('\n\nTodo Application Menu: 1. Add | 2. Mark Completed | 3. List | 4. Exit');
}

function runTodoApp(){

    // 
    let choice;

    do {
        displayMenu();

        // Fetch input
        // Python code -> choice = input("Enter Choice (1 - 4)")
        choice = readlineSync.question("Enter Choice (1-4): ")

        // Perform action based on picked choice
        switch (choice) {
            case '1':
                console.log("You want to add a task")
                const todo = readlineSync.question("New Todo Item: ")
                // Call the function for adding the item
                addTodo(todo)
                console.log("Todo Item Added successfully")
                break;
            case '2':
                console.log("You want to mark a task completed")
                const number = readlineSync.question("Mark as completed (Enter Todo number): ")
                
                if(markTodoCompleted(number)) {
                    console.log(`Todo number ${number} is marked as completed`)
                } else {
                    console.log("Invalid Todo number!!")
                }
                break;
            case '3':
                console.log("You want to list all tasks")
                const todos = listTodos()
                todos.forEach((todo, index) => {
                    console.log(`${index + 1}. ${todo.completed ? '[X]' : '[ ]'} ${todo.todo}`)
                })
                break;
            case '4':
                console.log("Exiting the App, Goodbye!");
                break;
            default:
                console.log("Invalid choice. Pick between 1 and 4")
        }


    }
    while (choice != 4)
}

// Run our application
runTodoApp();

todoFunctions.js

// Todo Functions

let todos = [];

function addTodo(todo) {
    todos.push({ todo, completed: false})
}

function markTodoCompleted(number) {
    let index = number - 1 
    if (index >= 0 && index < todos.length){
        todos[index].completed = true;
        return true;
    }
    return false
}


function listTodos() {
    return todos;
}


module.exports = {addTodo, markTodoCompleted, listTodos}