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import {AppBskyEmbedImages} from '@atproto/api'
import {isWeb} from 'platform/detection'
import React from 'react'
import {StyleProp, StyleSheet, View, ViewStyle} from 'react-native'
import {GalleryItem} from './Gallery'
interface ImageLayoutGridProps {
images: AppBskyEmbedImages.ViewImage[]
onPress?: (index: number) => void
onLongPress?: (index: number) => void
onPressIn?: (index: number) => void
style?: StyleProp<ViewStyle>
}
export function ImageLayoutGrid({style, ...props}: ImageLayoutGridProps) {
return (
<View style={style}>
<View style={styles.container}>
<ImageLayoutGridInner {...props} />
</View>
</View>
)
}
interface ImageLayoutGridInnerProps {
images: AppBskyEmbedImages.ViewImage[]
onPress?: (index: number) => void
onLongPress?: (index: number) => void
onPressIn?: (index: number) => void
}
function ImageLayoutGridInner(props: ImageLayoutGridInnerProps) {
const count = props.images.length
switch (count) {
case 2:
return (
<View style={styles.flexRow}>
<View style={styles.smallItem}>
<GalleryItem {...props} index={0} imageStyle={styles.image} />
</View>
<View style={styles.smallItem}>
<GalleryItem {...props} index={1} imageStyle={styles.image} />
</View>
</View>
)
case 3:
return (
<View style={styles.flexRow}>
<View style={styles.threeSingle}>
<GalleryItem {...props} index={0} imageStyle={styles.image} />
</View>
<View style={styles.threeDouble}>
<View style={styles.smallItem}>
<GalleryItem {...props} index={1} imageStyle={styles.image} />
</View>
<View style={styles.smallItem}>
<GalleryItem {...props} index={2} imageStyle={styles.image} />
</View>
</View>
</View>
)
case 4:
return (
<>
<View style={styles.flexRow}>
<View style={styles.smallItem}>
<GalleryItem {...props} index={0} imageStyle={styles.image} />
</View>
<View style={styles.smallItem}>
<GalleryItem {...props} index={1} imageStyle={styles.image} />
</View>
</View>
<View style={styles.flexRow}>
<View style={styles.smallItem}>
<GalleryItem {...props} index={2} imageStyle={styles.image} />
</View>
<View style={styles.smallItem}>
<GalleryItem {...props} index={3} imageStyle={styles.image} />
</View>
</View>
</>
)
default:
return null
}
}
// On web we use margin to calculate gap, as aspectRatio does not properly size
// all images on web. On native though we cannot rely on margin, since the
// negative margin interferes with the swipe controls on pagers.
// https://github.com/facebook/yoga/issues/1418
// https://github.com/bluesky-social/social-app/issues/2601
const IMAGE_GAP = 5
const styles = StyleSheet.create({
container: isWeb
? {
marginHorizontal: -IMAGE_GAP / 2,
marginVertical: -IMAGE_GAP / 2,
}
: {
gap: IMAGE_GAP,
},
flexRow: {
flexDirection: 'row',
gap: isWeb ? undefined : IMAGE_GAP,
},
smallItem: {flex: 1, aspectRatio: 1},
image: isWeb
? {
margin: IMAGE_GAP / 2,
}
: {},
threeSingle: {
flex: 2,
aspectRatio: isWeb ? 1 : undefined,
},
threeDouble: {
flex: 1,
gap: isWeb ? undefined : IMAGE_GAP,
},
})
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