web/packages/design-system/lib/components/Lightbox/FullView/index.tsx

'use client'

import { AnimatePresence, motion } from 'motion/react'
import { useEffect, useState } from 'react'
import { useIntl } from 'react-intl'

import Image from '../../Image'

import { IconButton } from '../../IconButton'
import { MaterialIcon } from '../../Icons/MaterialIcon'
import { Typography } from '../../Typography'

import styles from './fullView.module.css'
import { LightboxImage } from '../index'

type FullViewProps = {
  image: LightboxImage
  onClose: () => void
  onNext: () => void
  onPrev: () => void
  currentIndex: number
  totalImages: number
  hideLabel?: boolean
}

export default function FullView({
  image,
  onClose,
  onNext,
  onPrev,
  currentIndex,
  totalImages,
  hideLabel,
}: FullViewProps) {
  const intl = useIntl()
  const [animateLeft, setAnimateLeft] = useState(true)

  function handleSwipe(offset: number) {
    if (offset > 30) onPrev()
    if (offset < -30) onNext()
  }

  function handleNext() {
    setAnimateLeft(true)
    onNext()
  }

  function handlePrev() {
    setAnimateLeft(false)
    onPrev()
  }

  const handleKeyDown = (e: KeyboardEvent) => {
    if (e.key === 'ArrowLeft') {
      handlePrev()
    } else if (e.key === 'ArrowRight') {
      handleNext()
    }
  }

  useEffect(() => {
    window.addEventListener('keydown', handleKeyDown)

    return () => {
      window.removeEventListener('keydown', handleKeyDown)
    }
  })

  const variants = {
    initial: (animateLeft: boolean) => ({
      opacity: 0,
      x: animateLeft ? 300 : -300,
    }),
    animate: { opacity: 1, x: 0 },
    exit: (animateLeft: boolean) => ({
      opacity: 0,
      x: animateLeft ? -300 : 300,
    }),
  }

  return (
    <div className={styles.fullViewContainer}>
      <IconButton
        theme="Inverted"
        style="Muted"
        className={styles.closeButton}
        onPress={onClose}
        aria-label={intl.formatMessage({
          defaultMessage: 'Close',
        })}
      >
        <MaterialIcon icon="close" color="CurrentColor" size={24} />
      </IconButton>
      <div className={styles.header}>
        <Typography variant="Tag/sm">
          <span className={styles.imageCount}>
            {`${currentIndex + 1} / ${totalImages}`}
          </span>
        </Typography>
      </div>
      <div className={styles.imageContainer}>
        <AnimatePresence initial={false} custom={animateLeft}>
          <motion.div
            key={image.src}
            custom={animateLeft}
            variants={variants}
            initial="initial"
            animate="animate"
            exit="exit"
            transition={{ duration: 0.3 }}
            className={styles.imageWrapper}
            drag="x"
            onDragEnd={(_e, info) => handleSwipe(info.offset.x)}
          >
            {image.caption && !hideLabel ? (
              <Typography variant="Body/Paragraph/mdRegular">
                <p className={styles.imageCaption}>{image.caption}</p>
              </Typography>
            ) : null}
            <Image
              alt={image.alt}
              fill
              sizes="(min-width: 1500px) 1500px, 100vw"
              src={image.src}
              className={styles.image}
            />
          </motion.div>
        </AnimatePresence>
      </div>

      <motion.button
        className={`${styles.navigationButton} ${styles.fullViewPrevButton}`}
        onClick={handlePrev}
      >
        <MaterialIcon
          icon="arrow_back"
          color="CurrentColor"
          className={styles.leftTransformIcon}
        />
      </motion.button>
      <motion.button
        className={`${styles.navigationButton} ${styles.fullViewNextButton}`}
        onClick={handleNext}
      >
        <MaterialIcon icon="arrow_forward" color="CurrentColor" />
      </motion.button>
    </div>
  )
}