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const timeValue = 120;
let timer;
const handler = function (instance) {
return {
get: function (obj, prop) {
if (['[object Object]', '[object Array]'].indexOf(Object.prototype.toString.call(obj[prop])) > -1) {
return new Proxy(obj[prop], handler(instance));
}
return obj[prop];
instance.render();
},
set: function (obj, prop, value) {
obj[prop] = value;
instance.render();
return true;
},
deleteProperty: function (obj, prop) {
delete obj[prop];
instance.render();
return true;
}
}
}
const Rue = function (selector, options) {
const _this = this;
_this.elem = document.querySelector(selector);
const _data = new Proxy(options.data, handler(this));
_this.template = options.template;
Object.defineProperty(this, 'data', {
get: function () {
return _data;
},
set: function (data) {
_data = new Proxy(data, handler(_this));
_this.render();
return true;
}
})
};
Rue.prototype.render = function () {
this.elem.innerHTML = this.template(this.data);
};
const formatTime = function (time) {
let minutes = Math.floor(time / 60);
let seconds = time % 60;
return `${(minutes.toString())}:${seconds.toString().padStart(2,'0')}`;
}
const startTimer = function (e) {
if (!e.target.hasAttribute('data-start-timer')) return;
if (app.data.time < 1) {
app.data.time = timeValue;
}
app.data.paused = false;
stopTimer();
timer = setInterval(countdown, 1000);
};
const countdown = function () {
app.data.time--
if (app.data.time < 1) {
stopTimer();
app.data.paused = true;
}
}
const stopTimer = function () {
clearInterval(timer)
}
const pauseTimer = function (e) {
if (!e.target.hasAttribute('data-pause-timer')) return;
stopTimer();
app.data.paused = true;
}
const restartTimer = function (e) {
if (!e.target.hasAttribute('data-restart-timer') || app.data.time === timeValue) return;
stopTimer();
app.data.time = timeValue;
app.data.paused = false;
timer = setInterval(countdown, 1000);
}
const clickHandler = function (e) {
startTimer(e);
restartTimer(e);
pauseTimer(e);
}
const app = new Rue('#app', {
data: {
time: timeValue,
paused: true,
altMsg: true
},
template: function (props) {
if (!props) return;
if (props.time === 0 && props.altMsg) {
let html = `<h2>It's over, start again:</h2><button data-restart-timer class="button stop">Restart</button></div>`
return html;
}
let html = `<h2>You've got only <span class="counter">${formatTime(props.time)}</span> seconds!</h2>` +
(props.paused ? `<div class="buttons-container"><button data-start-timer class="button start">Start</button>` : `<div class="buttons-container"><button data-pause-timer class="button start">Pause</button>`) + `<button data-restart-timer class="button stop">Restart</button></div>`
return html;
}
})
app.render();
document.addEventListener('click', clickHandler);
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