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import AsyncStorage from '@react-native-community/async-storage';
import {useFocusEffect} from '@react-navigation/native';
import React, {useEffect, useState} from 'react';
import {
Keyboard,
StatusBar,
StyleSheet,
LayoutChangeEvent,
SectionListData,
} from 'react-native';
import {
useSharedValue,
withTiming,
Easing,
runOnJS,
} from 'react-native-reanimated';
import {SafeAreaView} from 'react-native-safe-area-context';
import {useDispatch, useSelector} from 'react-redux';
import {
RecentSearches,
SearchBar,
SearchCategories,
SearchResultList,
SearchResultsBackground,
TabsGradient,
} from '../../components';
import {SEARCH_ENDPOINT} from '../../constants';
import {loadSearchResults} from '../../services';
import {resetScreenType} from '../../store/actions';
import {RootState} from '../../store/rootReducer';
import {CategoryPreviewType, ProfilePreviewType, ScreenType} from '../../types';
import {
getRecentlySearchedCategories,
getRecentlySearchedUsers,
} from '../../utils';
/**
* Search Screen for user recommendations and a search
* tool to allow user to find other users
*/
const SearchScreen: React.FC = () => {
const {recentSearches} = useSelector((state: RootState) => state.taggUsers);
const [query, setQuery] = useState<string>('');
const [results, setResults] = useState<SectionListData<any>[] | undefined>();
const [recents, setRecents] = useState<Array<ProfilePreviewType>>(
recentSearches ?? [],
);
const [recentCategories, setRecentCategories] = useState<
CategoryPreviewType[]
>([]);
const [searching, setSearching] = useState(false);
/*
* Animated value
*/
const animationProgress = useSharedValue<number>(0);
const [searchBarHeight, setSearchBarHeight] = useState<number>(0);
const dispatch = useDispatch();
/*
* Main handler for changes in query.
*/
useEffect(() => {
if (!searching) {
return;
}
if (query.length < 3) {
loadRecentlySearched().then(() => setResults(undefined));
return;
}
(async () => {
const searchResults = await loadSearchResults(
`${SEARCH_ENDPOINT}?query=${query}`,
);
if (query.length > 2) {
const sanitizedResult = [
{
title: 'badges',
data: searchResults?.badges,
},
{
title: 'categories',
data: searchResults?.categories,
},
{
title: 'users',
data: searchResults?.users,
},
];
setResults(sanitizedResult);
} else {
setResults(undefined);
}
})();
}, [query]);
/**
* Code under useFocusEffect gets executed every time the screen comes under focus / is being viewed by the user.
* This is done to reset the users stored in our store for the Search screen.
* Read more here : https://reactnavigation.org/docs/function-after-focusing-screen/
*/
useFocusEffect(() => {
dispatch(resetScreenType(ScreenType.Search));
});
// when searching state changes, run animation and reset query accordingly
useEffect(() => {
if (searching) {
loadRecentlySearched().then(() => {
animationProgress.value = withTiming(1, {
duration: 180,
easing: Easing.bezier(0.31, 0.14, 0.66, 0.82),
});
});
} else {
setQuery('');
handleBlur();
animationProgress.value = withTiming(
0,
{duration: 180, easing: Easing.inOut(Easing.ease)},
() => {
'worklet';
runOnJS(setResults)(undefined);
},
);
}
}, [searching]);
// loads recent searches (users & categories) from AsyncStorage
const loadRecentlySearched = async () => {
return Promise.all([
getRecentlySearchedUsers(),
getRecentlySearchedCategories(),
]).then(
([users, categories]: [ProfilePreviewType[], CategoryPreviewType[]]) => {
setRecents(users);
setRecentCategories(categories);
},
);
};
const clearRecentlySearched = async () => {
try {
AsyncStorage.removeItem('@recently_searched_users');
AsyncStorage.removeItem('@recently_searched_categories');
loadRecentlySearched();
} catch (e) {
console.log(e);
}
};
const handleFocus = () => {
setSearching(true);
};
const handleBlur = () => {
Keyboard.dismiss();
};
const handleCancel = () => {
setSearching(false);
};
const onSearchBarLayout = (e: LayoutChangeEvent) => {
setSearchBarHeight(e.nativeEvent.layout.height);
};
return (
<SafeAreaView style={styles.container}>
<StatusBar barStyle="dark-content" />
<SearchBar
onCancel={handleCancel}
onChangeText={setQuery}
onBlur={handleBlur}
onFocus={handleFocus}
value={query}
onLayout={onSearchBarLayout}
{...{animationProgress, searching}}
/>
<SearchCategories useSuggestions={false} />
<SearchResultsBackground
{...{searching, searchBarHeight, animationProgress}}>
{results === undefined ? (
recents.length + recentCategories.length > 0 && (
<RecentSearches
sectionTitle="Recent"
onPress={clearRecentlySearched}
screenType={ScreenType.Search}
{...{recents, recentCategories}}
/>
)
) : (
<SearchResultList
{...{results}}
previewType={'Search'}
screenType={ScreenType.Search}
/>
)}
</SearchResultsBackground>
<TabsGradient />
</SafeAreaView>
);
};
const styles = StyleSheet.create({
container: {
flex: 1,
paddingTop: 15,
backgroundColor: '#fff',
},
});
export default SearchScreen;
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