const app = getApp()

const formatTime = date => {
  const year = date.getFullYear()
  const month = date.getMonth() + 1
  const day = date.getDate()
  const hour = date.getHours()
  const minute = date.getMinutes()
  const second = date.getSeconds()
  return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}

const formatNumber = n => {
  n = n.toString()
  return n[1] ? n : '0' + n
}

function beforeDay(day, format) {
  var date = new Date()
  var formateArr = ['Y', 'M', 'D', 'h', 'm', 's'];
  var returnArr = [];
  returnArr.push(date.getFullYear());
  returnArr.push(formatNumber(date.getMonth() + 1));
  returnArr.push(formatNumber(date.getDate() - day));
  returnArr.push(formatNumber(date.getHours()));
  returnArr.push(formatNumber(date.getMinutes()));
  returnArr.push(formatNumber(date.getSeconds()));
  for (var i in returnArr) {
    format = format.replace(formateArr[i], returnArr[i]);
  }
  return format;
}

function formatDate(date, format) {
  var formateArr = ['Y', 'M', 'D', 'h', 'm', 's'];
  var returnArr = [];
  returnArr.push(date.getFullYear());
  returnArr.push(formatNumber(date.getMonth() + 1));
  returnArr.push(formatNumber(date.getDate()));
  returnArr.push(formatNumber(date.getHours()));
  returnArr.push(formatNumber(date.getMinutes()));
  returnArr.push(formatNumber(date.getSeconds()));
  for (var i in returnArr) {
    format = format.replace(formateArr[i], returnArr[i]);
  }
  return format;
}

function json2Form(json) {
  var str = [];
  for (var p in json) {
    str.push(encodeURIComponent(p) + "=" + encodeURIComponent(json[p]));
  }
  return str.join("&");
}

function isEmpty(val) {
  if(val === 'undefined' || val === null || val === undefined){
    return true
  }
  if(val){
    val = val.toString().replace(/\s+/g, '')
  }
  return val === ''
}

function showToast(content) {
  if (isEmpty(content)) {
    return
  }
  wx.showToast({
    title: content,
    icon: 'none'
  })
}

function extend(obj) {
  var o = {},
    attr = Array.prototype.slice.call(arguments).slice(1);
  attr.forEach(function (val, index) {
    if (val in obj) {
      o[val] = obj[val];
    }
  });
  return o;
}

function playDing() {
  const innerAudioContext = wx.createInnerAudioContext(); //新建一个createInnerAudioContext();
  innerAudioContext.autoplay = true; //音频自动播放设置
  innerAudioContext.src = '/assets/raw/ptt_playfinish.mp3'; //链接到音频的地址
  innerAudioContext.onPlay(() => {}); //播放音效
  innerAudioContext.onError((res) => { //打印错误
  })
}

function showBackToast(content) {
  if (isEmpty(content)) {
    return
  }
  wx.showToast({
    title: content,
    icon: 'none',
    duration: 1000,
    success: function () {
      setTimeout(function () {
        wx.navigateBack()
      }, 1000)
    }
  })
}

/* 验证手机号 */
function checkPhone(phone) {
  var re = /^1\d{10}$/
  return re.test(phone) && phone.length === 11
}

function checkId(id) {
  // 1 "验证通过!", 0 //校验不通过 // id为身份证号码
  var format = /^(([1][1-5])|([2][1-3])|([3][1-7])|([4][1-6])|([5][0-4])|([6][1-5])|([7][1])|([8][1-2]))\d{4}(([1][9]\d{2})|([2]\d{3}))(([0][1-9])|([1][0-2]))(([0][1-9])|([1-2][0-9])|([3][0-1]))\d{3}[0-9xX]$/;
  //号码规则校验
  if (!format.test(id)) {
    return {
      'status': 0,
      'msg': '身份证号码不合规'
    };
  }
  //区位码校验
  //出生年月日校验  前正则限制起始年份为1900;
  var year = id.substr(6, 4), //身份证年
    month = id.substr(10, 2), //身份证月
    date = id.substr(12, 2), //身份证日
    time = Date.parse(month + '-' + date + '-' + year), //身份证日期时间戳date
    now_time = Date.parse(new Date()), //当前时间戳
    dates = (new Date(year, month, 0)).getDate(); //身份证当月天数
  if (time > now_time || date > dates) {
    return {
      'status': 0,
      'msg': '出生日期不合规'
    }
  }
  //校验码判断
  var c = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2); //系数
  var b = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'); //校验码对照表
  var id_array = id.split("");
  var sum = 0;
  for (var k = 0; k < 17; k++) {
    sum += parseInt(id_array[k]) * parseInt(c[k]);
  }
  if (id_array[17].toUpperCase() != b[sum % 11].toUpperCase()) {
    return { status: 0, msg: '身份证校验码不合规' }
  }
  return { status: 1, msg: '校验通过' }
}

const tokenList = [
  'pages/agent/factory/index',
  '/pages/home/info/index'
]

function extendPage(path){
  let pages = getCurrentPages()
  for (let index = 0; index < pages.length; index++) {
    if(pages[index].route === path){
      return true
    }
  }
  return false
}

function navigateTo(url){
  if(url === '/pages/login/index'){
   if(!extendPage(url)){
    wx.navigateTo({ url: '/pages/login/index' })
   }
    return
  }
  var white = false
  for (let index = 0; index < tokenList.length; index++) {
    if(url.indexOf(tokenList[index]) != -1){
      white = true
      break
    }
  }
  if(white && !app.userInfo){
    wx.navigateTo({ url: '/pages/login/index' })
    return
  }
  wx.navigateTo({ url })
}

function debounce(fn, interval) {
  var timer;
  var gapTime = interval || 1000;//间隔时间，如果interval不传，则默认1000ms
  return function() {
    clearTimeout(timer)
    var context = this
    var args = arguments//保存此处的arguments，因为setTimeout是全局的，arguments不是防抖函数需要的。
    timer = setTimeout(function() {
      fn.call(context, args)
    }, gapTime)
  }
}

/*函数节流*/
function throttle(fn, interval) {
  var enterTime = 0 //触发的时间
  var gap = interval || 300//间隔时间，如果interval不传，则默认300ms
  return function() {
    var backTime = Date.now()//第一次函数return即触发的时间
    if (backTime - enterTime > gap) {
      fn.apply(this, arguments)
      enterTime = backTime//赋值给第一次触发的时间，这样就保存了第二次触发的时间
    }
  }
}

function statDistance(lat1, lng1, lat2, lng2){
  var radLat1 = lat1 * Math.PI / 180.0;
  var radLat2 = lat2 * Math.PI / 180.0;
  var a = radLat1 - radLat2;
  var b = lng1 * Math.PI / 180.0 - lng2*Math.PI / 180.0;
  var s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2) + Math.cos(radLat1)*Math.cos(radLat2)*Math.pow(Math.sin(b/2),2)))
  s = s * 6378.137
  s = Math.round(s * 10000) / 10000
  return s.toFixed(2);
}

module.exports = {
  isEmpty: isEmpty,
  extend: extend,
  formatTime: formatTime,
  beforeDay: beforeDay,
  formatDate: formatDate,
  json2Form: json2Form,
  showToast: showToast,
  playDing: playDing,
  showBackToast: showBackToast,
  checkPhone: checkPhone,
  checkId: checkId,
  navigateTo: navigateTo,
  debounce: debounce,
  throttle: throttle,
  statDistance: statDistance
}