Closures:
=========
Closure is function that remembers the variables from its lexical scope even when the function is executed outside that corresponding scope. 

function outerFunction(outerVariable)
{
    function innerFunction(innerVariable){
        console.log("Outer Function Parameter = ",outerVariable);
        console.log("Inner Function Parameter = ",innerVariable);
    }
    // console.log(innerVariable);
    return innerFunction;
}

let newFunction = outerFunction("Hello");
newFunction("Good Morning");

function createCounter(){
    let count = 0;
    return{
        increment:function(){
            count++;
            console.log(`Count After the increment = ${count}`);
        },
        decrement:function(){
            count--;
            console.log(`Count After the decrement = ${count}`);
        },
        reset:function(){
            count = 0;
            console.log(`The Count Value after the reset = ${count}`);
        },
        getCount:function(){
            console.log(`The Current Count = ${count}`);
            return count;
        },
    }
}

const counter = createCounter(); // 0
counter.increment(); // 1
counter.increment(); // 2
counter.getCount(); // 2
counter.decrement();
counter.getCount();
counter.reset();
=========================================================
OOPs (Object Oriented Programming System)
=========================================
==> High level Programming Languages:
	1) Functional
	2) Object Based
	3) Object Oriented

Object Oriented Programming:
	1) Class
	2) Object
	3) Method
	4) Constructor

OOP Principles:
	1) Encapsulation
	2) Inheritance
	3) Polymorphism
	4) Abstraction


Project: Task Management:
===========================
// class ==> blueprint ==> collection of attributes and methods ==> keyword: class
class Task{
    // defining a constructor
    // to initialize the data members
    // special method
    constructor(title, descript, dueDate){
        this.title = title;
        this.descript = descript;
        this.deuDate = dueDate;
        this.status = "Pending"; // default value
    }
    markAsCompleted(){
        this.status = "Completed";
    }
    updateDetails(title,descript,dueDate){
        this.title = title || this.title;
        this.descript = descript || this.descript;
        this.dueDate = dueDate || this.dueDate;
    }
    getDetails(){
        return{
            title:this.title,
            description:this.descript,
            status:this.status,
            dueDate:this.dueDate
        };
    }
}
class TaskManager{
    constructor(){
        this.tasks = [];
    }
    
    addTask(task){
        this.tasks.push(task);
    }
    
    removeTask(title){
        this.tasks =  this.tasks.filter(task => task.title !== title);
    }
    
    updateTask(title,newDetails){
        const task = this.tasks.find(task => task.title === title);
        
        if(task){
            task.updateDetails(newDetails.title,newDetails.descript,newDetails.dueDate);
        }
    }
    listTask(){
        return this.tasks.map(task => task.getDetails());
    }
}

const tm = new TaskManager();
const t1 = new Task('Finish Project','Complete the Project by the end of the month','2025-01-31');

const t2 = new Task('Reading Book','Read the JavaScript Tutorial','2025-02-07');

tm.addTask(t1);
tm.addTask(t2);

console.log(tm.listTask());