import changeFifteenToEighteen from './changeFifteenToEighteen'

const idNoCheck = {
  //是否以9开头
  startWithNine: function(card) {
    if (card.substr(0, 1) === '9') {
      return true
    }
    return false
  },

  isCardNoBirth: function(card) {
    //出生证证件号由数字字母组合
    var reg = /(^[a-zA-Z0-9]{5,17}$)/
    return reg.test(card)
  },

  isCardNo: function(card) {
    //身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X
    var reg = /(^\d{17}(\d|X)$)/
    var reg2 = /(^\d{15}$)/
    if (!reg.test(card) && !reg2.test(card)) {
      return false
    }
    return true
  },

  //取身份证前两位,校验省份
  checkProvince: function(card) {
    var province = card.substr(0, 2)
    if (vcity[province] == undefined) {
      return false
    }
    return true
  },

  //检查生日是否正确
  checkBirthday: function(card) {
    var len = card.length
    //身份证15位时，次序为省（3位）市（3位）年（2位）月（2位）日（2位）校验位（3位），皆为数字
    if (len == '15') {
      var re_fifteen = /^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/
      var arr_data = card.match(re_fifteen)
      var year = arr_data[2]
      var month = arr_data[3]
      var day = arr_data[4]
      var birthday = new Date('19' + year + '/' + month + '/' + day)
      return this.verifyBirthday('19' + year, month, day, birthday)
    }
    //身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X
    if (len == '18') {
      let re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/
      let arr_data = card.match(re_eighteen)
      let year = arr_data[2]
      let month = arr_data[3]
      let day = arr_data[4]
      let birthday = new Date(year + '/' + month + '/' + day)
      return this.verifyBirthday(year, month, day, birthday)
    }
    return false
  },

  //校验日期
  verifyBirthday: function(year, month, day, birthday) {
    var now = new Date()
    // var now_year = now.getFullYear()
    //年月日是否合理
    if (birthday.getFullYear() == year && birthday.getMonth() + 1 == month && birthday.getDate() == day) {
      //判断年份的范围（0岁到100岁之间)
      //var time = now_year - year;
      if (year < 1900) {
        return false
      }
      if (now.getTime() - birthday.getTime() < 0) {
        return false
      }
      // if (time >= 0 && time <= 100) {
      //     return true;
      // }
      return true
    }
    return false
  },

  //校验位的检测
  checkParity: function(card) {
    //15位转18位
    if (card.length == '15') {
      card = changeFifteenToEighteen(card)
    }
    var len = card.length
    if (len == '18') {
      var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2)
      var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2')
      var cardTemp = 0,
        i,
        valnum
      for (i = 0; i < 17; i++) {
        cardTemp += card.substr(i, 1) * arrInt[i]
      }
      valnum = arrCh[cardTemp % 11]
      if (valnum == card.substr(17, 1)) {
        return true
      }
      return false
    }
    return false
  },

  /**
   * 身份证校验
   *
   */
  isIdno: function(idNo) {
    //是否为空
    if (idNo === '') {
      return false
    }
    //校验长度，类型
    if (this.isCardNo(idNo) === false) {
      return false
    }
    if (this.startWithNine(idNo) === true) {
      return false
    }
    //检查省份   --
    // if (this.checkProvince(idNo) === false) {
    //     return false;
    // }
    //校验生日
    if (this.checkBirthday(idNo) === false) {
      return false
    }
    //检验位的检测
    if (this.checkParity(idNo) === false) {
      return false
    }
    return true
  }
}

const vcity = {
  11: '北京',
  12: '天津',
  13: '河北',
  14: '山西',
  15: '内蒙古',
  21: '辽宁',
  22: '吉林',
  23: '黑龙江',
  31: '上海',
  32: '江苏',
  33: '浙江',
  34: '安徽',
  35: '福建',
  36: '江西',
  37: '山东',
  41: '河南',
  42: '湖北',
  43: '湖南',
  44: '广东',
  45: '广西',
  46: '海南',
  50: '重庆',
  51: '四川',
  52: '贵州',
  53: '云南',
  54: '西藏',
  61: '陕西',
  62: '甘肃',
  63: '青海',
  64: '宁夏',
  65: '新疆',
  71: '台湾',
  81: '香港',
  82: '澳门',
  91: '国外'
}

export default idNoCheck