todo

s70_2_0.js

var tasks = [];

var STATE_P = '진행';
var STATE_C = '완료';

var addTask = (function() {
	var id = 0;

	return function(title) {
				tasks.push({
					title: title,
					id: id++,
					state: STATE_P
				});

				render();
			};
})();

var removeTask = function(id) {
	var isRemoved = false;

	for (var i = 0; i < tasks.length; i++) {
		if (tasks[i].id === id) {
			tasks.splice(i, 1);
			isRemoved = true;

			break;
		}
	}

	if (!isRemoved) {
		warning('removeTask: invalid id');
	}

	render();
};

var changeState = function(id, state) {
	var ID = false, STATE;
	for (var i = 0; i < tasks.length; i++) {
		if (tasks[i].id === id) {
			ID = id;
			break;
		}
	}
	if (ID === false) {
		warning('changeState: invalid id - ' + id);
		return;
	}

	if (state !== STATE_P && state !== STATE_C) {
		warning('changeState: invalid state - ' + state);
		return;
	} else {
		STATE = state;
	}

	for (var i = 0; i < tasks.length; i++) {
		if (tasks[i].id === ID) {
			tasks[i].state = STATE;
			break;
		}
	}

	render();
};

var warning = console.log;

var render = function() {
	console.log('진행');

	var task;

	for (var i = 0; i < tasks.length; i++) {
		task = tasks[i];

		if (task.state === '진행') {
			console.log(task.id + '. ' + task.title + '(' + task.state + ')' );
		}
	}

	console.log('완료');

	for (var i = 0; i < tasks.length; i++) {
		task = tasks[i];

		if (task.state === '완료') {
			console.log(task.id + '. ' + task.title + '(' + task.state + ')' );
		}
	}

	console.log('추가     : addTask(할일 내용)');
	console.log('삭제     : removeTask(아이디)');
	console.log('상태 변경 : changeState(아이디, 상태 - 완료 또는 진행)');
}

render();