export const parserInputValueDate = (
  value: string
  // eslint-disable-next-line consistent-return
): void | { start: Date; end: Date } => {
  const ddStart = value.slice(0, 2);
  const mmStart = value.slice(3, 5);
  const yyStart = value.slice(6, 10);

  const ddEnd = value.slice(13, 15);
  const mmEnd = value.slice(16, 18);
  const yyEnd = value.slice(19, 23);
  if (
    ddStart !== '' &&
    ddStart !== '00' &&
    !ddStart.includes('_') &&
    mmStart !== '' &&
    mmStart !== '00' &&
    Number(mmStart) <= 12 &&
    !mmStart.includes('_') &&
    yyStart !== '' &&
    yyStart !== '0000' &&
    Number(yyStart) >= 2000 &&
    !yyStart.includes('_') &&
    ddEnd !== '' &&
    ddEnd !== '00' &&
    !ddEnd.includes('_') &&
    mmEnd !== '' &&
    mmEnd !== '00' &&
    Number(mmEnd) <= 12 &&
    !mmEnd.includes('_') &&
    yyEnd !== '' &&
    yyEnd !== '0000' &&
    Number(yyEnd) >= 2000 &&
    !yyEnd.includes('_')
  ) {
    return {
      start: new Date(`${mmStart}/${ddStart}/${yyStart}`),
      end: new Date(`${mmEnd}/${ddEnd}/${yyEnd}`)
    };
  }
};

export const autoInputDate = (prevdate: string, newDate: string) => {
  const ddStartPrev = prevdate.slice(0, 2);
  const mmStartPrev = prevdate.slice(3, 5);
  const yyStartPrev = prevdate.slice(6, 10);

  const ddEndPrev = prevdate.slice(13, 15);
  const mmEndPrev = prevdate.slice(16, 18);
  const yyEndPrev = prevdate.slice(19, 23);

  let ddStartNew = newDate.slice(0, 2);
  let mmStartNew = newDate.slice(3, 5);
  let yyStartNew = newDate.slice(6, 10);

  let ddEndNew = newDate.slice(13, 15);
  let mmEndNew = newDate.slice(16, 18);
  let yyEndNew = newDate.slice(19, 23);
  if (newDate !== '__/__/____ - __/__/____' && newDate !== '') {
    if (ddStartNew === ddStartPrev && ddStartNew !== '__') {
      if (ddStartNew.includes('_')) {
        if (ddStartNew === '_0' || ddStartNew === '0_') {
          ddStartNew = '01';
        } else {
          const oneNumber = ddStartNew.split('_');
          ddStartNew = oneNumber[0] ? `0${oneNumber[0]}` : `0${oneNumber[1]}`;
        }
      }
    }
    if (mmStartNew === mmStartPrev && mmStartNew !== '__') {
      if (mmStartNew.includes('_')) {
        if (mmStartNew === '_0' || mmStartNew === '0_') {
          mmStartNew = '01';
        } else {
          const oneNumber = mmStartNew.split('_');
          mmStartNew = oneNumber[0] ? `0${oneNumber[0]}` : `0${oneNumber[1]}`;
        }
      }
    }
    if (yyStartNew === yyStartPrev && yyStartNew !== '____' && yyStartNew.includes('_')) {
      const numberArray = yyStartNew.split('_');
      yyStartNew = String(2000 + Number(numberArray.find(item => item !== '')));
    }

    if (ddEndNew === ddEndPrev && ddEndNew !== '__') {
      if (ddEndNew.includes('_')) {
        if (ddEndNew === '_0' || ddEndNew === '0_') {
          ddEndNew = '01';
        } else {
          const oneNumber = ddEndNew.split('_');
          ddEndNew = oneNumber[0] ? `0${oneNumber[0]}` : `0${oneNumber[1]}`;
        }
      }
    }
    if (mmEndNew === mmEndPrev && mmEndNew !== '__') {
      if (mmEndNew.includes('_')) {
        if (mmEndNew === '_0' || mmEndNew === '0_') {
          mmEndNew = '01';
        } else {
          const oneNumber = mmEndNew.split('_');
          mmEndNew = oneNumber[0] ? `0${oneNumber[0]}` : `0${oneNumber[1]}`;
        }
      }
    }
    if (yyEndNew === yyEndPrev && yyEndNew !== '____' && yyStartNew.includes('_')) {
      const numberArray = yyEndNew.split('_');
      yyEndNew = String(2000 + Number(numberArray.find(item => item !== '')));
    }

    if (Number(ddStartNew) > 31) {
      ddStartNew = '31';
    } else if (ddStartNew === '00') {
      ddStartNew = '01';
    }
    if (Number(mmStartNew) > 12) {
      mmStartNew = '12';
    } else if (mmStartNew === '00') {
      mmStartNew = '01';
    }
    if (Number(ddEndNew) > 31) {
      ddEndNew = '31';
    } else if (ddEndNew === '00') {
      ddEndNew = '01';
    }
    if (Number(mmEndNew) > 12) {
      mmEndNew = '12';
    } else if (mmEndNew === '00') {
      mmEndNew = '01';
    }
    if (Number(yyStartNew) < 2000) {
      yyStartNew = '2000';
    } else if (yyStartNew === '0000') {
      yyStartNew = '2000';
    }
    if (Number(yyEndNew) < 2000) {
      yyEndNew = '2000';
    } else if (yyEndNew === '0000') {
      yyEndNew = '2000';
    }
  }
  if (
    `${ddStartNew}/${mmStartNew}/${yyStartNew} - ${ddEndNew}/${mmEndNew}/${yyEndNew}` === '// - //'
  ) {
    return '';
  }
  return `${ddStartNew}/${mmStartNew}/${yyStartNew} - ${ddEndNew}/${mmEndNew}/${yyEndNew}`;
};