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import React, {useState} from 'react'
import {
Animated,
StyleSheet,
TouchableWithoutFeedback,
useWindowDimensions,
View,
} from 'react-native'
import {observer} from 'mobx-react-lite'
import {FontAwesomeIcon} from '@fortawesome/react-native-fontawesome'
import {SwipeAndZoom, Dir} from '../util/gestures/SwipeAndZoom'
import {useStores} from '../../../state'
import {useAnimatedValue} from '../../lib/hooks/useAnimatedValue'
import * as models from '../../../state/models/shell-ui'
import * as ProfileImageLightbox from './ProfileImage'
import * as ImageLightbox from './Image'
import * as ImagesLightbox from './Images'
export const Lightbox = observer(function Lightbox() {
const store = useStores()
const winDim = useWindowDimensions()
const [isZooming, setIsZooming] = useState(false)
const panX = useAnimatedValue(0)
const panY = useAnimatedValue(0)
const zoom = useAnimatedValue(0)
const onClose = () => {
store.shell.closeLightbox()
}
const onSwipeStartDirection = (dir: Dir) => {
setIsZooming(dir === Dir.Zoom)
}
const onSwipeEnd = (dir: Dir) => {
if (dir === Dir.Up || dir === Dir.Down) {
onClose()
} else if (dir === Dir.Left) {
store.shell.activeLightbox?.onSwipeLeft()
} else if (dir === Dir.Right) {
store.shell.activeLightbox?.onSwipeRight()
}
}
if (!store.shell.isLightboxActive) {
return <View />
}
let element
if (store.shell.activeLightbox?.name === 'profile-image') {
element = (
<ProfileImageLightbox.Component
{...(store.shell.activeLightbox as models.ProfileImageLightbox)}
/>
)
} else if (store.shell.activeLightbox?.name === 'image') {
element = (
<ImageLightbox.Component
{...(store.shell.activeLightbox as models.ImageLightbox)}
/>
)
} else if (store.shell.activeLightbox?.name === 'images') {
element = (
<ImagesLightbox.Component
isZooming={isZooming}
{...(store.shell.activeLightbox as models.ImagesLightbox)}
/>
)
} else {
return <View />
}
const translateX = Animated.multiply(panX, winDim.width * -1)
const translateY = Animated.multiply(panY, winDim.height * -1)
const scale = Animated.add(zoom, 1)
const swipeTransform = {
transform: [
{translateY: winDim.height / 2},
{scale},
{translateY: winDim.height / -2},
{translateX},
{translateY},
],
}
const swipeOpacity = {
opacity: panY.interpolate({
inputRange: [-1, 0, 1],
outputRange: [0, 1, 0],
}),
}
return (
<View style={StyleSheet.absoluteFill}>
<SwipeAndZoom
panX={panX}
panY={panY}
zoom={zoom}
swipeEnabled
zoomEnabled
canSwipeLeft={store.shell.activeLightbox.canSwipeLeft}
canSwipeRight={store.shell.activeLightbox.canSwipeRight}
canSwipeUp
canSwipeDown
hasPriority
onSwipeStartDirection={onSwipeStartDirection}
onSwipeEnd={onSwipeEnd}>
<TouchableWithoutFeedback onPress={onClose}>
<Animated.View style={[styles.bg, swipeOpacity]} />
</TouchableWithoutFeedback>
<TouchableWithoutFeedback onPress={onClose}>
<View style={styles.xIcon}>
<FontAwesomeIcon icon="x" size={24} style={{color: '#fff'}} />
</View>
</TouchableWithoutFeedback>
<Animated.View style={swipeTransform}>{element}</Animated.View>
</SwipeAndZoom>
</View>
)
})
const styles = StyleSheet.create({
bg: {
position: 'absolute',
top: 0,
left: 0,
bottom: 0,
right: 0,
backgroundColor: '#000',
opacity: 0.9,
},
xIcon: {
position: 'absolute',
top: 30,
right: 30,
},
container: {
position: 'absolute',
},
})
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