export default {
	dateCache: null,
	countDownDiffCache: null,
	countDownDiff(dateStr) {
		if (dateStr == this.dateCache) {
			return this.countDownDiffCache;
		}
		let dayTimes = 24*60*60*1000;
		let hourTimes = 60*60*1000;
		let minTimes = 60*1000;
		let secondsTimes = 1000;
		let dateTimesDiff = new Date(dateStr).getTime() - new Date().getTime();
		let day = Math.floor(dateTimesDiff / dayTimes);
		let leftOver = dateTimesDiff % dayTimes;
		let hour = Math.floor(leftOver / hourTimes);
		leftOver = leftOver % hourTimes;
		let min = Math.floor(leftOver / minTimes);
		leftOver = leftOver % minTimes;
		let seconds = Math.floor(leftOver / secondsTimes);
		leftOver = leftOver % secondsTimes;
		this.dateCache = dateStr;
		this.countDownDiffCache = {
			day: day,
			hour: hour,
			min: min,
			seconds: seconds
		}
		return this.countDownDiffCache;
	},
	addHours(dateStr, hourAmount) {
		let date = new Date(dateStr);
		date.setHours(date.getHours() + hourAmount);
		return date;
	}
}