//--------------------------------------------------------------
 //LC
 //2021-10-31
 //--------------------------------------------------------------

//校验银行卡号，银行卡校验规则(Luhn算法)
function isBankNo(value) { 
  if (value == "" || !isPositiveInteger(value)) return false;
  var wei = [],
    sumOdd = 0,
    sumEven = 0,
    length = value.length;
  for (var j = 0; j < length; j++) {
    wei[j] = parseInt(value.substring(length - j - 1, length - j)); // 从最末一位开始提取，每一位上的数值
  }
  for (var i = 0; i < length / 2; i++) {
    sumOdd += wei[2 * i];
    if (wei[2 * i + 1] * 2 > 9) wei[2 * i + 1] = wei[2 * i + 1] * 2 - 9;
    else wei[2 * i + 1] *= 2;
    sumEven += wei[2 * i + 1];
  }
  return (sumOdd + sumEven) % 10 == 0;
}
//验证手机号
function isPhone(phone){
  let reg = /^[1][3-9][0-9]{9}$/
  if(reg.test(phone)){
    return true;
  }else{
    return false;
  }
}
//验证
//正整数
function isInteger(value) {
  return /^[1-9][0-9]*$/.test(value);
}
//浮点类型
function isFloat(num) {
  var reg = /^\d+(?=\.{0,1}\d+$|$)/
  num=num.replace(/\.\d{2,}$/,num.substr(num.indexOf('.'),3))//删除小数点后两位
  return reg.test(num) ;
}
 
//date类型转string,就是2019-10-10 12:00:00这样，date转时间戳就new Date().valueOf()
function formatDate (date,type) {
	if(type=="long")
		return date.getFullYear()+'-'+(parseInt(date.getMonth())+1)+'-'+date.getDate()+' '+date.getHours()+':'+date.getMinutes()+':'+date.getSeconds()
	else
		return date.getFullYear()+'-'+(parseInt(date.getMonth())+1)+'-'+date.getDate()
}
 
//是否身份证
function isIdCard (num) {
  let reg = /^[1-9]\d{5}(18|19|20|(3\d))\d{2}((0[1-9])|(1[0-2]))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/
  return reg.test(reg)
}

//密码必须是大小写英文加数字
function isPassword(pass) {
	if(pass.length <8 || pass.length >20){
		 return false;
	}
	var str = pass;
	var regexpUperStr = /[A-Z]+/;
	var reexpLowerStr = /[a-z]+/;
	var regexpNum = /\d+/;
	var uperStrFlag = regexpUperStr.test(str);
	var lowerStrFlag = reexpLowerStr.test(str);
	var numFlag = regexpNum.test(str);

	if (uperStrFlag == true && lowerStrFlag == true && numFlag == true)
		return true;
	else
		return false;
}
//验证昵称
function isNickname(nickname){
	if(nickname.length <2 || nickname.length >16){
		 return false;
	}
	var regex =  /^(\w|[\u4E00-\u9FA5])*$/; 
	var res = regex.test(nickname);
	if(res==true){
	  return true;
	}else{
	  return false;
	}
}

var minute = 1000 * 60;
var hour = minute *60;
var day = hour *24;
var week = day * 7;
var month = day * 30;
function getTimer(stringTime){
    var time1 = new Date().getTime();//当前的时间戳
	stringTime = stringTime.replace(/-/g,'/'); //IOS不支持-格式时间，只支持/格式时间
    var time2 = Date.parse(new Date(stringTime));//指定时间的时间戳
    var time = time1 - time2;

    var result = null;
    if(time < 0){
        return "";
    }else if(time/month >= 1){
        result = parseInt(time/month) + "月前";
    }else if(time/week >= 1){
        result = parseInt(time/week) + "周前";
    }else if(time/day >= 1){
        result = parseInt(time/day) + "天前";
    }else if(time/hour >= 1){
        result = parseInt(time/hour) + "小时前";
    }else if(time/minute >= 1){
        result = parseInt(time/minute) + "分钟前";
    }else {
        result = "刚刚";
    }
	return result;
}
function getUrlParam(name) {
	var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
	var r = window.location.search.substr(1).match(reg);
	if(r != null) return unescape(r[2]);
	return null;
}
function getParam(url,name) {
	var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
	var r = url.substr(1).match(reg);
	if(r != null) return unescape(r[2]);
	return null;
}
function formatRichText(html){
  let newContent= html.replace(/<img[^>]*>/gi,function(match,capture){
      match = match.replace(/style="[^"]+"/gi, '').replace(/style='[^']+'/gi, '');
      match = match.replace(/width="[^"]+"/gi, '').replace(/width='[^']+'/gi, '');
      match = match.replace(/height="[^"]+"/gi, '').replace(/height='[^']+'/gi, '');
      return match;
  });
  newContent = newContent.replace(/style="[^"]+"/gi,function(match,capture){
      match = match.replace(/width:[^;]+;/gi, 'max-width:100%;').replace(/width:[^;]+;/gi, 'max-width:100%;');
      return match;
  });
  newContent = newContent.replace(/<br[^>]*\/>/gi, '');
  newContent = newContent.replace(/\<img/gi, '<img style="max-width:100%;height:auto;display:block;margin:0;"');
  return newContent;
}

export { 
	isBankNo,
	isInteger,
	isFloat,
	formatDate,
	isIdCard,
	isPhone,
	isPassword,
	isNickname,
	getTimer,
	getUrlParam,getParam,
	formatRichText,
}