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src/features/offer/components/MoviesScreeningCalendar/MovieCalendarContext.tsx
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import React, { | ||
createContext, | ||
useCallback, | ||
useContext, | ||
useMemo, | ||
useRef, | ||
useEffect, | ||
useState, | ||
PropsWithChildren, | ||
} from 'react' | ||
import { Animated, View, ViewStyle } from 'react-native' | ||
import { FlatList } from 'react-native-gesture-handler' | ||
import { Easing } from 'react-native-reanimated' | ||
import styled from 'styled-components/native' | ||
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import { MovieCalendar } from 'features/offer/components/MovieCalendar/MovieCalendar' | ||
import { handleMovieCalendarScroll } from 'features/offer/components/MoviesScreeningCalendar/utils' | ||
import { useNextDays } from 'features/offer/helpers/useNextDays/useNextDays' | ||
import { Anchor } from 'ui/components/anchor/Anchor' | ||
import { useScrollToAnchor } from 'ui/components/anchor/AnchorContext' | ||
import { useLayout } from 'ui/hooks/useLayout' | ||
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type MovieCalendarContextType = { | ||
selectedDate: Date | ||
goToDate: (date: Date) => void | ||
} | ||
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const MovieCalendarContext = createContext<MovieCalendarContextType | undefined>(undefined) | ||
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const AnimatedCalendarView: React.FC<PropsWithChildren<{ selectedDate: Date }>> = ({ | ||
selectedDate, | ||
children, | ||
}) => { | ||
const fadeAnim = useRef(new Animated.Value(0)).current | ||
const translateAnim = useRef(new Animated.Value(0)).current | ||
const [width, setWidth] = useState<number>(0) | ||
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useEffect(() => { | ||
translateAnim.setValue(0) | ||
fadeAnim.setValue(0) | ||
Animated.timing(translateAnim, { | ||
toValue: 1, | ||
duration: 200, | ||
useNativeDriver: true, | ||
easing: Easing.out(Easing.ease), | ||
}).start() | ||
Animated.timing(fadeAnim, { | ||
toValue: 1, | ||
duration: 300, | ||
easing: Easing.in(Easing.ease), | ||
useNativeDriver: true, | ||
}).start() | ||
}, [fadeAnim, translateAnim, selectedDate]) | ||
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return ( | ||
<AnimationContainer> | ||
<Animated.View | ||
onLayout={({ nativeEvent }) => { | ||
setWidth(nativeEvent.layout.width) | ||
}} | ||
style={{ | ||
opacity: fadeAnim, | ||
transform: [ | ||
{ translateX: Animated.subtract(Animated.multiply(translateAnim, width), width) }, | ||
], | ||
}}> | ||
{children} | ||
</Animated.View> | ||
</AnimationContainer> | ||
) | ||
} | ||
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export const MovieCalendarProvider: React.FC<{ | ||
nbOfDays: number | ||
children: React.ReactNode | ||
containerStyle?: ViewStyle | ||
}> = ({ nbOfDays, containerStyle, children }) => { | ||
const { dates, selectedDate, setSelectedDate } = useNextDays(nbOfDays) | ||
const flatListRef = useRef<FlatList | null>(null) | ||
const { width: flatListWidth, onLayout: onFlatListLayout } = useLayout() | ||
const { width: itemWidth, onLayout: onItemLayout } = useLayout() | ||
const scrollToAnchor = useScrollToAnchor() | ||
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const scrollToMiddleElement = useCallback( | ||
(currentIndex: number) => { | ||
const { offset } = handleMovieCalendarScroll(currentIndex, flatListWidth, itemWidth) | ||
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flatListRef.current?.scrollToOffset({ | ||
animated: true, | ||
offset, | ||
}) | ||
}, | ||
[flatListRef, flatListWidth, itemWidth] | ||
) | ||
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useEffect(() => { | ||
const currentIndex = dates.findIndex( | ||
(date) => (date as Date).toDateString() === selectedDate.toDateString() | ||
) | ||
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scrollToMiddleElement(currentIndex) | ||
}, [selectedDate, dates, scrollToMiddleElement]) | ||
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useEffect(() => { | ||
if (flatListRef?.current) { | ||
flatListRef.current?.scrollToOffset({ offset: 0 }) | ||
} | ||
}, [flatListRef]) | ||
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const goToDate = useCallback( | ||
(date: Date) => { | ||
scrollToAnchor('movie-calendar') | ||
setSelectedDate(date) | ||
}, | ||
[scrollToAnchor, setSelectedDate] | ||
) | ||
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const value = useMemo(() => ({ selectedDate, goToDate }), [selectedDate, goToDate]) | ||
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return ( | ||
<MovieCalendarContext.Provider value={value}> | ||
<View style={containerStyle}> | ||
<Anchor name="movie-calendar"> | ||
<MovieCalendar | ||
dates={dates} | ||
selectedDate={selectedDate} | ||
onTabChange={setSelectedDate} | ||
flatListRef={flatListRef} | ||
flatListWidth={flatListWidth} | ||
onFlatListLayout={onFlatListLayout} | ||
itemWidth={itemWidth} | ||
onItemLayout={onItemLayout} | ||
/> | ||
</Anchor> | ||
</View> | ||
<AnimatedCalendarView selectedDate={selectedDate}>{children}</AnimatedCalendarView> | ||
</MovieCalendarContext.Provider> | ||
) | ||
} | ||
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const AnimationContainer = styled.View({ overflow: 'hidden' }) | ||
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export const useMovieCalendar = (): MovieCalendarContextType => { | ||
const context = useContext(MovieCalendarContext) | ||
if (context === undefined) { | ||
throw new Error('useMovieCalendar must be used within a MovieCalendarProvider') | ||
} | ||
return context | ||
} |
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