/**
 * 格林威治的时间差 补8小时
 */
export function formatDateTime(dateTime) {
    dateTime = formatTimeStrToStr(dateTime)
    if (!dateTime) {
    	return '-'
    }
    var nowDate = new Date(dateTime).getTime();
    // var timezone = 8; //目标时区时间，东八区
    var offset_GMT = new Date().getTimezoneOffset(); // 本地时间和格林威治的时间差，单位为分钟
    // var nowDate = new Date().getTime(); // 本地时间距 1970 年 1 月 1 日午夜（GMT 时间）之间的毫秒数
    // var targetDate = new Date(nowDate + offset_GMT * 60 * 1000 + timezone * 60 * 60 * 1000);
    var targetDate = new Date(nowDate - offset_GMT * 60 * 1000);
    let datae = new Date(targetDate);
    var YY = datae.getFullYear() + '-';
    var MM =(datae.getMonth() + 1 < 10
    ? '0' + (datae.getMonth() + 1)
    : datae.getMonth() + 1) + '-';
    var DD = datae.getDate() < 10 ? '0' + datae.getDate() : datae.getDate();
    var hh =(datae.getHours() < 10 ? '0' + datae.getHours() : datae.getHours())+':';
    var mm =(datae.getMinutes() < 10 ? '0' + datae.getMinutes() : datae.getMinutes()) +':';
    var ss =datae.getSeconds() < 10 ? '0' + datae.getSeconds() : datae.getSeconds();
    let mydatavalue = `${YY}${MM}${DD} ${hh}${mm}${ss}`;
    return mydatavalue
  }
  
// 2022-08-31T09:45:51.9340433  转 2022-08-31 09:45:51
export function formatTimeStrToStr(timeStr) {
    if (!timeStr || !new Date(timeStr)) {
      return ''
    }
    if (timeStr.lastIndexOf('.') == -1) {
        return timeStr.replace('T',' ').substring(0,timeStr.length)
    }
    return timeStr.replace('T',' ').substring(0,timeStr.lastIndexOf('.'))
}

// 2022-08-31 09:45:51  转 2022-08-31T09:45:51
export function formatTimeToT(timeStr) {
    if(!timeStr) return ""
    let _str = timeStr.replace(/(^\s*)|(\s*$)/g, "");
    return _str.replace(' ','T').substring(0,_str.length)
}

// 时间转化格式化，使用位置（供应导入，excel中时间转义）
/**
     * @param {*} data 当前时间
     * @param {*} type date/默认：返回日期   time：返回时间   datetime：日期+时间
     * @param {*} connect 转义链接符，默认“-”，只适合日期连接符
     *                    如果不是zh，则链接统一为传入值，zh则为年月日时分秒
     *                    如果类型为数组，则直接为数组,也适合时间连接符，有效数组格式为3位或6位
     * @returns String
     */
export function formatTimeStampToNorm(data,type,connect){
    if(!data || data.length <= 0){return ""}
    let _date = new Date(data)
    if(!type) type = "date";
    if(!connect) connect = "-";
    let year = __formatLength(_date.getFullYear());
    let month = __formatLength(_date.getMonth() + 1);
    let day = __formatLength(_date.getDate());
    let hour = __formatLength(_date.getHours());
    let minute = __formatLength(_date.getMinutes());
    let second = __formatLength(_date.getSeconds());
    
    function __formatLength(value){
        if(Number(value) < 10){
            return "0" + value
        }else{
            return value
        }
    }
    
    let arr = (connect == 'zh') ? ["年","月","日","时","分","秒"] : [connect,connect,"",":",":",""]
    if(typeof connect == "Array") arr = connect;
    switch(type){
        case "date":
            return year+arr[0] + month+arr[1] + day+arr[2];
        case "time":
            return hour+arr[3] + minute+arr[4] + second+arr[5];
        default:
            return year+arr[0] + month+arr[1] + day+arr[2] + " " +hour+arr[3] + minute+arr[4] + second+arr[5];
    }
}

/**
 * Parse the time to string
 * @param {(Object|string|number)} time
 * @param {string} cFormat
 * @returns {string | null}
 */
export function parseTime(time, cFormat) {
    if (arguments.length === 0 || !time) {
      return null
    }
    const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
    let date
    if (typeof time === 'object') {
      date = time
    } else {
      if ((typeof time === 'string')) {
        if ((/^[0-9]+$/.test(time))) {
          // support "1548221490638"
          time = parseInt(time)
        } else {
          // support safari
          // https://stackoverflow.com/questions/4310953/invalid-date-in-safari
          time = time.replace(new RegExp(/-/gm), '/')
        }
      }
  
      if ((typeof time === 'number') && (time.toString().length === 10)) {
        time = 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(/{([ymdhisa])+}/g, (result, key) => {
      const value = formatObj[key]
      // Note: getDay() returns 0 on Sunday
      if (key === 'a') {
        return ['日', '一', '二', '三', '四', '五', '六'][value]
      }
      return value.toString().padStart(2, '0')
    })
    return time_str
}

/**
 * @param {number} time
 * @param {string} option
 * @returns {string}
 */
export function formatTime(time, option) {
    if (('' + time).length === 10) {
      time = parseInt(time) * 1000
    } else {
      time = +time
    }
    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'
      )
    }
}


/**
 * @param {string} type
 * @returns {Date}
 */
export function getTime(type) {
    if (type === 'start') {
        return new Date().getTime() - 3600 * 1000 * 24 * 90
    } else {
        return new Date(new Date().toDateString())
    }
}