//傳入值與格式，分析與轉換成JS日期物件
function parseTWDate(val, format) {
  var result = { result: true, msg: '', DateObj: null };

  if (typeof val === 'undefined') {
    result.result = false;
    return result;
  }

  //只接受數字與字串型態
  if (typeof val !== 'number' && typeof val !== 'string') {
    result.result = false;
    return result;
  }
  //檢查格式字串
  if (
    format !== 'yyyMMdd' &&
    format !== 'yyyMMddHHmm' &&
    format !== 'yyyMMddHHmmss'
  ) {
    result.result = false;
    result.msg = '不支援的日期格式設定';
    return result;
  }
  //只接受數字不接受符號
  if (/^\d+$/.test(val) === false) {
    result.result = false;
    return result;
  }
  var str = '';

  //數字型態轉文字
  if (typeof val === 'number') {
    str = val.toString();
  } else {
    str = val;
  }

  //從後往前兩位兩位取出字串，轉數字後做驗證
  var sec = 0;
  var min = 0;
  var hr = 0;
  var day = 0;
  var mon = 0;
  var year = 0;
  var movingCount = 0;
  if (format === 'yyyMMddHHmmss') {
    if (str.length < 11) {
      result.result = false;
      return result;
    }
    sec = parseInt(
      str.substring(str.length - movingCount - 2, str.length - movingCount),
      10
    );
    if (sec === NaN || sec > 59 || sec < 0) {
      result.result = false;
      return result;
    }
    movingCount += 2;
  }
  if (format === 'yyyMMddHHmm' || format === 'yyyMMddHHmmss') {
    if (str.length < 9) {
      result.result = false;
      return result;
    }
    min = parseInt(
      str.substring(str.length - movingCount - 2, str.length - movingCount),
      10
    );
    if (min === NaN || min > 59 || min < 0) {
      result.result = false;
      return result;
    }
    movingCount += 2;

    hr = parseInt(
      str.substring(str.length - movingCount - 2, str.length - movingCount),
      10
    );
    if (hr === NaN || hr > 23 || hr < 0) {
      result.result = false;
      return result;
    }
    movingCount += 2;
  }
  if (str.length < 5) {
    result.result = false;
    return result;
  }
  day = parseInt(
    str.substring(str.length - movingCount - 2, str.length - movingCount),
    10
  );
  if (day === NaN || day > 31 || day < 1) {
    result.result = false;
    return result;
  }
  movingCount += 2;

  mon = parseInt(
    str.substring(str.length - movingCount - 2, str.length - movingCount),
    10
  );
  if (mon === NaN || mon > 12 || mon < 1) {
    result.result = false;
    return result;
  }
  movingCount += 2;

  year = parseInt(str.substring(0, str.length - movingCount), 10);
  if (year === NaN || year < 1) {
    result.result = false;
    return result;
  }
  //JS的日期的月份是0 base
  result.DateObj = new Date(year + 1911, mon - 1, day, hr, min, sec);

  return result;
}
//將日期選擇轉成民國年
function getTWDate(val, format) {
  var rawYear = val.getFullYear();
  var twYear = rawYear - 1911;
  var rawMonth = val.getMonth() + 1;
  var twMonth = rawMonth.toString().padStart(2, '0');
  var rawDay = val.getDate();
  var twDay = rawDay.toString().padStart(2, '0');
  var strTWDate = twYear + twMonth + twDay;
  if (format === 'yyyMMddHHmm' || format === 'yyyMMddHHmmss') {
    var hr = val.getHours().toString().padStart(2, '0');
    var min = val.getMinutes().toString().padStart(2, '0');
    strTWDate = strTWDate + hr + min;
    if (format === 'yyyMMddHHmmss') {
      var sec = val.getSeconds().toString().padStart(2, '0');
      strTWDate = strTWDate + sec;
    }
  }
  return strTWDate;
}

var dataSource = {
  schema: {
    model: {
      fields: {
        myDate: {
          type: 'date',
          validation: {
            required: true,
            dateFormat: function (input, option) {
              if (input.is("[name='myDate']")) {
                if (Date.parse(input.val()) !== NaN) {
                  $('#myDateTW').removeAttr('data-TWdate-msg');
                  $('#myDate').removeAttr('data-required-msg');
                  return true;
                } else {
                  $('#myDateTW').attr('data-TWdate-msg', '格式民國年yyyMMdd');
                  return false;
                }
              } else {
                return true;
              }
            },
          },
        },
        myDateTW: {
          type: 'string',
          validation: {
            required: true,
            TWdate: function (input, option) {
              if (input.is("[name='myDateTW']")) {
                var val = input.val();
                var format = 'yyyMMdd';
                var result = parseTWDate(val, format);
                if (result.result) {
                  input.removeAttr('data-TWdate-msg');
                  //帶回model
                  var source = $('#myDateTW')[0].kendoBindingTarget.source;
                  $('#myDate').val(result.DateObj);
                  source.set('myDate', result.DateObj);
                  return true;
                } else {
                  input.attr('data-TWdate-msg', '格式民國年' + format);
                  //帶回model
                  var source = $('#myDateTW')[0].kendoBindingTarget.source;
                  $('#myDate').val(val);
                  source.set('myDate', val);
                  return false;
                }
              } else {
                return true;
              }
            },
          },
        },
      },
    },
  },
};