/**
 * Created by jiachenpan on 16/11/18.
 */
import md5 from 'js-md5';

// 时间转换格式
export function parseTime(time, cFormat) {
	if (arguments.length === 0) {
		return null;
	}
	const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}';
	let date;
	if (typeof time === 'object') {
		date = time;
	} else {
		if (('' + time).length === 10) time = parseInt(time) * 1000;
		date = new Date(time);
	}
	const formatObj = {
		y: date.getFullYear(),
		m: date.getMonth() + 1,
		d: date.getDate(),
		h: date.getHours(),
		i: date.getMinutes(),
		s: date.getSeconds(),
		a: date.getDay()
	};
	const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
		let value = formatObj[key];
		if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1];
		if (result.length > 0 && value < 10) {
			value = '0' + value;
		}
		return value || 0;
	});
	return time_str;
}
// 判断多久之前
export function formatTime(time, option) {
	time = +time * 1000;
	const d = new Date(time);
	const now = Date.now();

	const diff = (now - d) / 1000;

	if (diff < 30) {
		return '刚刚';
	} else if (diff < 3600) { // less 1 hour
		return Math.ceil(diff / 60) + '分钟前';
	} else if (diff < 3600 * 24) {
		return Math.ceil(diff / 3600) + '小时前';
	} else if (diff < 3600 * 24 * 2) {
		return '1天前';
	}
	if (option) {
		return parseTime(time, option);
	} else {
		return d.getMonth() + 1 + '月' + d.getDate() + '日' + d.getHours() + '时' + d.getMinutes() + '分';
	}
}

/**
 * 获取dom对象偏移位置 设置初始位置
 * @param {*} dom - 需要获取的dom
 * @param {*} isFixed - 父级是否position: fixed
 */
export function getDomOffset(dom) {
	let pol = 0;
	let pot = 0;
	let offsetLeft = 0;
	let offsetTop = 0;
	while (dom) {
		if (pol != dom.offsetLeft) {
			offsetLeft += dom.offsetLeft;
			pol = dom.offsetLeft;
		}
		if (pot != dom.offsetTop) {
			offsetTop += dom.offsetTop;
			pot = dom.offsetTop;
		}
		dom = dom.offsetParent;
	}
	const offset = {
		x: offsetLeft,
		y: offsetTop
	};
	return offset;
}

/**
 * 矩形碰撞检测
 */
export function checkRectCollision(rect1, rect2) {
	const center1 = { x: rect1.point.x + rect1.width / 2, y: rect1.point.y + rect1.height / 2 };
	const center2 = { x: rect2.point.x + rect2.width / 2, y: rect2.point.y + rect2.height / 2 };
	if (
		// 横向判断 和 纵向判断
		Math.abs(center1.x - center2.x) < rect1.width / 2 + rect2.width / 2 &&
		Math.abs(center1.y - center2.y) < rect1.height / 2 + rect2.height / 2
	) {
		return true;
	}
	return false;
}

export function getSessionId() {
	return md5([Math.random().toFixed(5), +new Date()].join('_'));
}

/*
*  获取倒计时
*  data 目标时间
*/
export function getCountTime(data) {
	const stationDate = parseInt(data);
	const date = Date.parse(new Date()) / 1000;
	const time = stationDate - date;
	if (time > 0) {
		let h = Math.floor(time / (60 * 60));
		let m = Math.floor(time / 60) - (h * 60);
		let s = Math.floor(time) - (h * 60 * 60) - (m * 60);
		if (h <= 9) h = '0' + h;
		if (m <= 9) m = '0' + m;
		if (s <= 9) s = '0' + s;
		return `${h}:${m}:${s}`;
	} else {
		return -1;
	}
}