commerce/components/product/age-gate-form.tsx

'use client';

/* This example requires Tailwind CSS v2.0+ */
import { FC, Fragment, useEffect, useRef, useState, useTransition } from 'react';

import { Transition } from '@headlessui/react';
import { CheckIcon } from '@heroicons/react/24/outline';
import { useAgeConfirmation } from 'app/hooks/use-age-confirmation';
import clsx from 'clsx';
import { isBefore, isValid, parse } from 'date-fns';
import { useTranslations } from 'next-intl';
import { useRouter } from 'next/navigation';

type AgeGateFormProps = {
  checkoutUrl: string;
  didCancel?: () => void;
};

const AgeGateForm: FC<AgeGateFormProps> = ({ checkoutUrl, didCancel }) => {
  const t = useTranslations('Index');
  const router = useRouter();
  const [isPending, startTransition] = useTransition();
  const [hasValidDate, setHasValidDate] = useState(false);
  const [month, setMonth] = useState<number>();
  const [day, setDay] = useState<number>();
  const [year, setYear] = useState<number>();

  const { onAgeConfirmed } = useAgeConfirmation();

  const yearFieldRef = useRef<HTMLInputElement>(null);

  const minAge = 20;
  const maxAge = 130;

  const save = () => {
    if (hasValidDate) {
      onAgeConfirmed();
      startTransition(() => {
        router.push(checkoutUrl);
      });
    }
  };

  const cancel = () => {
    if (didCancel) {
      didCancel();
    }
  };

  useEffect(() => {
    const now = new Date();
    const thresholdDate = new Date(now.getFullYear() - minAge, now.getMonth(), now.getDate());
    const minDate = new Date(now.getFullYear() - maxAge, now.getMonth(), now.getDate());
    if (month && day && year) {
      const date = parse(`${month}-${day}-${year}`, 'MM-dd-yyyy', new Date());
      const oldEnough = isBefore(date, thresholdDate);
      const tooOld = isBefore(date, minDate);
      setHasValidDate(isValid(date) && oldEnough && !tooOld);
    } else {
      setHasValidDate(false);
    }
  }, [month, day, year]);

  useEffect(() => {
    if (yearFieldRef) {
      console.debug('yearFieldRef', yearFieldRef?.current);
      yearFieldRef?.current?.focus();
    }
  }, []);

  return (
    <>
      <Transition show={true}>
        <Transition.Child
          as={Fragment}
          enter="transition-all ease-in-out duration-300"
          enterFrom="translate-x-[-100%]"
          enterTo="translate-x-0"
          leave="transition-all ease-in-out duration-200"
          leaveFrom="translate-x-0"
          leaveTo="translate-x-[-100%]"
        >
          <div className="grid h-full w-full grid-cols-1 place-content-center">
            <div className="mx-auto inline-block space-y-6 overflow-hidden rounded-lg py-12 text-left align-bottom text-white transition-all sm:my-8 sm:w-full sm:max-w-lg sm:p-6 sm:align-middle">
              <div>
                <div className="mx-auto flex h-12 w-12 items-center justify-center rounded-full bg-green-900">
                  <CheckIcon
                    className="h-6 w-6 text-green-600 dark:text-green-400"
                    aria-hidden="true"
                  />
                </div>
                <div className="pt-5 text-center">
                  <h3 className="text-lg font-medium leading-6 text-white">
                    {t('age-gate.title')}
                  </h3>
                  {/* <div className="mt-2">
                        <p className="text-sm text-white">{t('age-gate.description')}</p>
                      </div> */}
                </div>
              </div>
              <div>
                <div className="text-center text-sm font-medium">{t('age-gate.birthdate')}</div>
              </div>
              <div>
                <div className="flex flex-row justify-center space-x-2">
                  <div className="flex flex-col items-start space-y-1">
                    <input
                      type="text"
                      className="w-full border bg-transparent p-2 text-center text-white selection:bg-emerald-200 focus:ring-offset-0"
                      ref={yearFieldRef}
                      placeholder="YYYY"
                      autoFocus
                      maxLength={4}
                      onChange={(e) => setYear(parseInt(e?.target?.value))}
                    />
                    <div className="w-full text-center text-xs">{t('age-gate.year')}</div>
                  </div>

                  <div className="flex flex-col items-start space-y-1">
                    <input
                      type="text"
                      className="w-full border bg-transparent p-2 text-center text-white selection:bg-emerald-200 focus:ring-offset-0"
                      placeholder="MM"
                      maxLength={2}
                      onChange={(e) => setMonth(parseInt(e?.target?.value))}
                    />
                    <div className="w-full text-center text-xs">{t('age-gate.month')}</div>
                  </div>
                  <div className="flex flex-col items-start space-y-1">
                    <input
                      type="text"
                      className="w-full border bg-transparent p-2 text-center text-white selection:bg-emerald-200 focus:ring-offset-0"
                      placeholder="DD"
                      maxLength={2}
                      onChange={(e) => setDay(parseInt(e?.target?.value))}
                    />
                    <div className="w-full text-center text-xs">{t('age-gate.day')}</div>
                  </div>
                </div>
              </div>
              <div className="text-black sm:grid sm:grid-flow-row-dense sm:grid-cols-2 sm:gap-3">
                <button
                  type="button"
                  className={clsx(
                    'inline-flex w-full justify-center',
                    hasValidDate
                      ? 'border border-dark hover:border-dark/50'
                      : 'border border-dark/50 hover:border-dark/20',
                    'bg-white px-4 py-2',
                    'text-base font-medium text-black',
                    'shadow-sm transition-colors duration-300',
                    'focus:outline-none focus:ring-2 focus:ring-white focus:ring-offset-2',
                    'disabled:cursor-not-allowed disabled:opacity-10',
                    'disabled:border-dark/50 disabled:hover:border-dark/50',
                    'sm:col-start-2 sm:text-sm'
                  )}
                  onClick={() => save()}
                  disabled={!hasValidDate}
                >
                  {isPending ? t('age-gate.confirming') : t('age-gate.confirm')}
                </button>
                <button
                  type="button"
                  className={clsx(
                    'mt-3 inline-flex w-full justify-center',
                    'border border-dark/10 hover:border-dark/30',
                    'bg-white/50 px-4 py-2',
                    'text-base font-medium',
                    'text-black shadow-sm transition-all duration-300 hover:bg-white hover:bg-opacity-20',
                    'focus:outline-none focus:ring-2 focus:ring-green-500 focus:ring-offset-2',
                    'sm:col-start-1 sm:mt-0 sm:text-sm',
                    'disabled:border-dark/20 disabled:hover:border-dark/20',
                    'disabled:text-dark/30 disabled:hover:text-dark/30'
                  )}
                  onClick={() => cancel()}
                  disabled={isPending}
                >
                  {t('age-gate.deny')}
                </button>
              </div>
            </div>
          </div>
        </Transition.Child>
      </Transition>
    </>
  );
};

export default AgeGateForm;