module.exports = {
	/**
		* 日期格式化
		* @param {Date | String | Number} date 
		* @param {String} format 格式
		*/
	formatDate: function (date, format) {
		if (!format) {
			format = 'YYYY/MM/DD hh:mm:ss';
		}
		if (!date) {
			return '';
		}
		date = getDate(date)
		var YYYY = date.getFullYear();
		var MM = ('0' + (date.getMonth() + 1)).slice(-2)
		var DD = ('0' + date.getDate()).slice(-2);
		var hh = ("0" + date.getHours()).slice(-2);
		var mm = ("0" + date.getMinutes()).slice(-2);
		var ss = ("0" + date.getSeconds()).slice(-2);
		var result = format.replace(getRegExp('YYYY'), YYYY)
			.replace(getRegExp('MM'), MM)
			.replace(getRegExp('DD'), DD)
			.replace(getRegExp('hh'), hh)
			.replace(getRegExp('mm'), mm)
			.replace(getRegExp('ss'), ss)
		return result;
	},
	/**
 * 获取浅色标签颜色
 * @param {string} hexColor 如 "#e3f9e9"
 */
	getLightColor: function (color, level) {
		if (!color || color.indexOf('#') === -1) return color;

		// 默认变浅程度
		var weight = level !== undefined ? level : 0.9;

		// 处理 #fff 这种简写
		var hex = color.slice(1);
		if (hex.length === 3) {
			hex = hex.charAt(0) + hex.charAt(0) + hex.charAt(1) + hex.charAt(1) + hex.charAt(2) + hex.charAt(2);
		}

		// 提取 RGB
		var r = parseInt(hex.substring(0, 2), 16);
		var g = parseInt(hex.substring(2, 4), 16);
		var b = parseInt(hex.substring(4, 6), 16);

		// 与白色(255)混合逻辑：新颜色 = 原颜色 * (1 - weight) + 255 * weight
		r = Math.floor(r * (1 - weight) + 255 * weight);
		g = Math.floor(g * (1 - weight) + 255 * weight);
		b = Math.floor(b * (1 - weight) + 255 * weight);

		// 转回 16 进制
		var toString16 = function (n) {
			var s = n.toString(16);
			return s.length === 1 ? '0' + s : s;
		};

		return '#' + toString16(r) + toString16(g) + toString16(b);
	}
};