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import {BlurView} from '@react-native-community/blur';
import {RouteProp} from '@react-navigation/native';
import {StackNavigationProp} from '@react-navigation/stack';
import React, {useEffect, useRef, useState} from 'react';
import {FlatList, Keyboard, StyleSheet} from 'react-native';
import {useSelector} from 'react-redux';
import {IndividualMomentTitleBar, MomentPost} from '../../components';
import {AVATAR_DIM} from '../../constants';
import {MainStackParams} from '../../routes';
import {RootState} from '../../store/rootreducer';
import {MomentPostType} from '../../types';
import {
isIPhoneX,
normalize,
SCREEN_HEIGHT,
StatusBarHeight,
} from '../../utils';
/**
* Individual moment view opened when user clicks on a moment tile
*/
type MomentContextType = {
keyboardVisible: boolean;
scrollTo: (index: number) => void;
};
export const MomentContext = React.createContext({} as MomentContextType);
type IndividualMomentRouteProp = RouteProp<MainStackParams, 'IndividualMoment'>;
type IndividualMomentNavigationProp = StackNavigationProp<
MainStackParams,
'IndividualMoment'
>;
interface IndividualMomentProps {
route: IndividualMomentRouteProp;
navigation: IndividualMomentNavigationProp;
}
const IndividualMoment: React.FC<IndividualMomentProps> = ({
route,
navigation,
}) => {
const {
userXId,
screenType,
moment: {moment_category, moment_id},
} = route.params;
const {moments} = useSelector((state: RootState) =>
userXId ? state.userX[screenType][userXId] : state.moments,
);
const scrollRef = useRef<FlatList<MomentPostType>>(null);
const momentData = moments.filter(
(m) => m.moment_category === moment_category,
);
const initialIndex = momentData.findIndex((m) => m.moment_id === moment_id);
const [keyboardVisible, setKeyboardVisible] = useState(false);
useEffect(() => {
const showKeyboard = () => setKeyboardVisible(true);
const hideKeyboard = () => setKeyboardVisible(false);
Keyboard.addListener('keyboardWillShow', showKeyboard);
Keyboard.addListener('keyboardWillHide', hideKeyboard);
return () => {
Keyboard.removeListener('keyboardWillShow', showKeyboard);
Keyboard.removeListener('keyboardWillHide', hideKeyboard);
};
}, []);
const scrollTo = (index: number) => {
// TODO: make this dynamic
const offset = isIPhoneX() ? -(AVATAR_DIM + 100) : -(AVATAR_DIM + 160);
scrollRef.current?.scrollToIndex({
index: index,
viewOffset: offset,
});
};
return (
<MomentContext.Provider
value={{
keyboardVisible,
scrollTo,
}}>
<BlurView
blurType="light"
blurAmount={30}
reducedTransparencyFallbackColor="white"
style={styles.contentContainer}>
<IndividualMomentTitleBar
style={styles.header}
close={() => navigation.goBack()}
title={moment_category}
/>
<FlatList
ref={scrollRef}
data={momentData}
contentContainerStyle={styles.listContentContainer}
renderItem={({item, index}) => (
<MomentPost
moment={item}
userXId={userXId}
screenType={screenType}
index={index}
/>
)}
keyExtractor={(item, _) => item.moment_id}
showsVerticalScrollIndicator={false}
initialScrollIndex={initialIndex}
onScrollToIndexFailed={() => {
// TODO: code below does not work, index resets to 0
// const wait = new Promise((resolve) => setTimeout(resolve, 500));
// wait.then(() => {
// console.log('scrolling to ', initialIndex);
// scrollRef.current?.scrollToIndex({index: initialIndex});
// });
}}
/>
</BlurView>
</MomentContext.Provider>
);
};
const styles = StyleSheet.create({
contentContainer: {
paddingTop: StatusBarHeight,
flex: 1,
},
header: {
height: normalize(70),
},
listContentContainer: {
paddingBottom: SCREEN_HEIGHT * 0.2,
},
});
export default IndividualMoment;
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