function indexNumFormat(num) {
	switch (num) {
		case 0:
			num = "Ⅰ";
			break;
		case 1:
			num = "Ⅱ";
			break;
		case 2:
			num = "Ⅲ";
			break;
		case 3:
			num = "Ⅳ";
			break;
		case 4:
			num = "Ⅴ";
			break;
		case 5:
			num = "Ⅵ";
			break;
		case 6:
			num = "Ⅶ";
			break;
		case 7:
			num = "Ⅷ";
			break;
		case 8:
			num = "Ⅸ";
			break;
	}
	return num;
}

var dateFormat = function (timestamp, format) {
	if (!format) {
		format = "yyyy-MM-dd hh:mm:ss";
	}
	timestamp = parseInt(timestamp);
	// 通过getDate()方法获取date类型的时间
	var realDate = getDate(timestamp);

	function timeFormat(num) {
		return num < 10 ? '0' + num : num;
	}
	var date = [
		["M+", timeFormat(realDate.getMonth() + 1)],
		["d+", timeFormat(realDate.getDate())],
		["h+", timeFormat(realDate.getHours())],
		["m+", timeFormat(realDate.getMinutes())],
		["s+", timeFormat(realDate.getSeconds())],
		["q+", Math.floor((realDate.getMonth() + 3) / 3)],
		["S+", realDate.getMilliseconds()],
	];
	var reg1 = regYear.exec(format);
	// console.log(reg1[0]);
	if (reg1) {
		format = format.replace(reg1[1], (realDate.getFullYear() + '').substring(4 - reg1[1].length));
	}
	for (var i = 0; i < date.length; i++) {
		var k = date[i][0];
		var v = date[i][1];
		// getRegExp初始化一个正则表达式对象
		var reg2 = getRegExp("(" + k + ")").exec(format);
		if (reg2) {
			format = format.replace(reg2[1], reg2[1].length == 1 ?
				v : ("00" + v).substring(("" + v).length));
		}
	}
	return format;
}

function parseDate(dateStr) {
	dateStr = dateStr.substring(0, 10);
	return dateStr;
}

module.exports = {
	parseDate: parseDate,
	dateFormat: dateFormat,
	indexNumFormat: indexNumFormat,
	split:function(str,sign){
		return str.split(sign);
	},
	parseStr:function(str){
		return JSON.parse(str);
	},
	evalStr:function(str){
		return eval(str);
	},
	dateStrEv:function(startDate,endDate){
		if(startDate){
			return startDate.split(" ")[0];
		}else if(endDate){
			return endDate.split(" ")[0];
		}else{
			return "未找到记录";
		}
	},
	dateStr:function(str){
		if(str){
			return str.split(" ")[0];
		}else{
			return "";
		}
	},
	timeStr:function(str){
		if(str){
			return str.split(" ")[1];
		}else{
			return "";
		}
	},
	isHttpImg:function(str){
		if(str.indexOf("http:")>-1 || str.indexOf("https:")>-1){
			return true;
		}else{
			return false;
		}
	},
	birthDate:function(timestamp){
		var date = getDate(parseInt(timestamp));
		var mm = date.getMonth()+1;
		if(mm<10){
			mm = '0'+mm;
		}
		var dd = date.getDate();
		if(dd<10){
			dd = '0'+dd;
		}
		return date.getFullYear()+"-"+mm+"-"+dd;
	}
}