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import Animated, {
type SharedValue,
useAnimatedStyle,
} from 'react-native-reanimated'
import {useSafeAreaInsets} from 'react-native-safe-area-context'
import {LinearGradient} from 'expo-linear-gradient'
import {isIOS} from '#/platform/detection'
import {usePagerHeaderContext} from '#/view/com/pager/PagerHeaderContext'
import {atoms as a} from '#/alf'
const AnimatedLinearGradient = Animated.createAnimatedComponent(LinearGradient)
export function StatusBarShadow() {
const {top: topInset} = useSafeAreaInsets()
const pagerContext = usePagerHeaderContext()
if (isIOS && pagerContext) {
const {scrollY} = pagerContext
return <StatusBarShadowInnner scrollY={scrollY} />
}
return (
<LinearGradient
colors={['rgba(0,0,0,0.5)', 'rgba(0,0,0,0)']}
style={[
a.absolute,
a.z_10,
{height: topInset, top: 0, left: 0, right: 0},
]}
/>
)
}
function StatusBarShadowInnner({scrollY}: {scrollY: SharedValue<number>}) {
const {top: topInset} = useSafeAreaInsets()
const animatedStyle = useAnimatedStyle(() => {
return {
transform: [
{
translateY: Math.min(0, scrollY.get()),
},
],
}
})
return (
<AnimatedLinearGradient
colors={['rgba(0,0,0,0.5)', 'rgba(0,0,0,0)']}
style={[
animatedStyle,
a.absolute,
a.z_10,
{height: topInset, top: 0, left: 0, right: 0},
]}
/>
)
}
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