bsky-app/src/view/screens/Feeds.tsx
2023-11-29 09:05:26 -05:00

628 lines
17 KiB
TypeScript

import React from 'react'
import {ActivityIndicator, StyleSheet, View, RefreshControl} from 'react-native'
import {FontAwesomeIcon} from '@fortawesome/react-native-fontawesome'
import {FontAwesomeIconStyle} from '@fortawesome/react-native-fontawesome'
import {ViewHeader} from 'view/com/util/ViewHeader'
import {FAB} from 'view/com/util/fab/FAB'
import {Link} from 'view/com/util/Link'
import {NativeStackScreenProps, FeedsTabNavigatorParams} from 'lib/routes/types'
import {usePalette} from 'lib/hooks/usePalette'
import {useWebMediaQueries} from 'lib/hooks/useWebMediaQueries'
import {ComposeIcon2, CogIcon} from 'lib/icons'
import {s} from 'lib/styles'
import {SearchInput} from 'view/com/util/forms/SearchInput'
import {UserAvatar} from 'view/com/util/UserAvatar'
import {
LoadingPlaceholder,
FeedFeedLoadingPlaceholder,
} from 'view/com/util/LoadingPlaceholder'
import {ErrorMessage} from 'view/com/util/error/ErrorMessage'
import debounce from 'lodash.debounce'
import {Text} from 'view/com/util/text/Text'
import {FlatList} from 'view/com/util/Views'
import {useFocusEffect} from '@react-navigation/native'
import {FeedSourceCard} from 'view/com/feeds/FeedSourceCard'
import {Trans, msg} from '@lingui/macro'
import {useLingui} from '@lingui/react'
import {useSetMinimalShellMode} from '#/state/shell'
import {usePreferencesQuery} from '#/state/queries/preferences'
import {
useFeedSourceInfoQuery,
useGetPopularFeedsQuery,
useSearchPopularFeedsMutation,
} from '#/state/queries/feed'
import {cleanError} from 'lib/strings/errors'
import {useComposerControls} from '#/state/shell/composer'
import {useSession} from '#/state/session'
type Props = NativeStackScreenProps<FeedsTabNavigatorParams, 'Feeds'>
type FlatlistSlice =
| {
type: 'error'
key: string
error: string
}
| {
type: 'savedFeedsHeader'
key: string
}
| {
type: 'savedFeedsLoading'
key: string
// pendingItems: number,
}
| {
type: 'savedFeedNoResults'
key: string
}
| {
type: 'savedFeed'
key: string
feedUri: string
}
| {
type: 'savedFeedsLoadMore'
key: string
}
| {
type: 'popularFeedsHeader'
key: string
}
| {
type: 'popularFeedsLoading'
key: string
}
| {
type: 'popularFeedsNoResults'
key: string
}
| {
type: 'popularFeed'
key: string
feedUri: string
}
| {
type: 'popularFeedsLoadingMore'
key: string
}
export function FeedsScreen(_props: Props) {
const pal = usePalette('default')
const {openComposer} = useComposerControls()
const {isMobile, isTabletOrDesktop} = useWebMediaQueries()
const [query, setQuery] = React.useState('')
const [isPTR, setIsPTR] = React.useState(false)
const {
data: preferences,
isLoading: isPreferencesLoading,
error: preferencesError,
} = usePreferencesQuery()
const {
data: popularFeeds,
isFetching: isPopularFeedsFetching,
error: popularFeedsError,
refetch: refetchPopularFeeds,
fetchNextPage: fetchNextPopularFeedsPage,
isFetchingNextPage: isPopularFeedsFetchingNextPage,
hasNextPage: hasNextPopularFeedsPage,
} = useGetPopularFeedsQuery()
const {_} = useLingui()
const setMinimalShellMode = useSetMinimalShellMode()
const {
data: searchResults,
mutate: search,
reset: resetSearch,
isPending: isSearchPending,
error: searchError,
} = useSearchPopularFeedsMutation()
const {hasSession} = useSession()
/**
* A search query is present. We may not have search results yet.
*/
const isUserSearching = query.length > 1
const debouncedSearch = React.useMemo(
() => debounce(q => search(q), 500), // debounce for 500ms
[search],
)
const onPressCompose = React.useCallback(() => {
openComposer({})
}, [openComposer])
const onChangeQuery = React.useCallback(
(text: string) => {
setQuery(text)
if (text.length > 1) {
debouncedSearch(text)
} else {
refetchPopularFeeds()
resetSearch()
}
},
[setQuery, refetchPopularFeeds, debouncedSearch, resetSearch],
)
const onPressCancelSearch = React.useCallback(() => {
setQuery('')
refetchPopularFeeds()
resetSearch()
}, [refetchPopularFeeds, setQuery, resetSearch])
const onSubmitQuery = React.useCallback(() => {
debouncedSearch(query)
}, [query, debouncedSearch])
const onPullToRefresh = React.useCallback(async () => {
setIsPTR(true)
await refetchPopularFeeds()
setIsPTR(false)
}, [setIsPTR, refetchPopularFeeds])
const onEndReached = React.useCallback(() => {
if (
isPopularFeedsFetching ||
isUserSearching ||
!hasNextPopularFeedsPage ||
popularFeedsError
)
return
fetchNextPopularFeedsPage()
}, [
isPopularFeedsFetching,
isUserSearching,
popularFeedsError,
hasNextPopularFeedsPage,
fetchNextPopularFeedsPage,
])
useFocusEffect(
React.useCallback(() => {
setMinimalShellMode(false)
}, [setMinimalShellMode]),
)
const items = React.useMemo(() => {
let slices: FlatlistSlice[] = []
if (hasSession) {
slices.push({
key: 'savedFeedsHeader',
type: 'savedFeedsHeader',
})
if (preferencesError) {
slices.push({
key: 'savedFeedsError',
type: 'error',
error: cleanError(preferencesError.toString()),
})
} else {
if (isPreferencesLoading || !preferences?.feeds?.saved) {
slices.push({
key: 'savedFeedsLoading',
type: 'savedFeedsLoading',
// pendingItems: this.rootStore.preferences.savedFeeds.length || 3,
})
} else {
if (preferences?.feeds?.saved.length === 0) {
slices.push({
key: 'savedFeedNoResults',
type: 'savedFeedNoResults',
})
} else {
const {saved, pinned} = preferences.feeds
slices = slices.concat(
pinned.map(uri => ({
key: `savedFeed:${uri}`,
type: 'savedFeed',
feedUri: uri,
})),
)
slices = slices.concat(
saved
.filter(uri => !pinned.includes(uri))
.map(uri => ({
key: `savedFeed:${uri}`,
type: 'savedFeed',
feedUri: uri,
})),
)
}
}
}
}
slices.push({
key: 'popularFeedsHeader',
type: 'popularFeedsHeader',
})
if (popularFeedsError || searchError) {
slices.push({
key: 'popularFeedsError',
type: 'error',
error: cleanError(
popularFeedsError?.toString() ?? searchError?.toString() ?? '',
),
})
} else {
if (isUserSearching) {
if (isSearchPending || !searchResults) {
slices.push({
key: 'popularFeedsLoading',
type: 'popularFeedsLoading',
})
} else {
if (!searchResults || searchResults?.length === 0) {
slices.push({
key: 'popularFeedsNoResults',
type: 'popularFeedsNoResults',
})
} else {
slices = slices.concat(
searchResults.map(feed => ({
key: `popularFeed:${feed.uri}`,
type: 'popularFeed',
feedUri: feed.uri,
})),
)
}
}
} else {
if (isPopularFeedsFetching && !popularFeeds?.pages) {
slices.push({
key: 'popularFeedsLoading',
type: 'popularFeedsLoading',
})
} else {
if (
!popularFeeds?.pages ||
popularFeeds?.pages[0]?.feeds?.length === 0
) {
slices.push({
key: 'popularFeedsNoResults',
type: 'popularFeedsNoResults',
})
} else {
for (const page of popularFeeds.pages || []) {
slices = slices.concat(
page.feeds
.filter(feed => !preferences?.feeds?.saved.includes(feed.uri))
.map(feed => ({
key: `popularFeed:${feed.uri}`,
type: 'popularFeed',
feedUri: feed.uri,
})),
)
}
if (isPopularFeedsFetchingNextPage) {
slices.push({
key: 'popularFeedsLoadingMore',
type: 'popularFeedsLoadingMore',
})
}
}
}
}
}
return slices
}, [
hasSession,
preferences,
isPreferencesLoading,
preferencesError,
popularFeeds,
isPopularFeedsFetching,
popularFeedsError,
isPopularFeedsFetchingNextPage,
searchResults,
isSearchPending,
searchError,
isUserSearching,
])
const renderHeaderBtn = React.useCallback(() => {
return (
<Link
href="/settings/saved-feeds"
hitSlop={10}
accessibilityRole="button"
accessibilityLabel={_(msg`Edit Saved Feeds`)}
accessibilityHint="Opens screen to edit Saved Feeds">
<CogIcon size={22} strokeWidth={2} style={pal.textLight} />
</Link>
)
}, [pal, _])
const renderItem = React.useCallback(
({item}: {item: FlatlistSlice}) => {
if (item.type === 'error') {
return <ErrorMessage message={item.error} />
} else if (
item.type === 'popularFeedsLoadingMore' ||
item.type === 'savedFeedsLoading'
) {
return (
<View style={s.p10}>
<ActivityIndicator />
</View>
)
} else if (item.type === 'savedFeedsHeader') {
if (!isMobile) {
return (
<View
style={[
pal.view,
styles.header,
pal.border,
{
borderBottomWidth: 1,
},
]}>
<Text type="title-lg" style={[pal.text, s.bold]}>
<Trans>My Feeds</Trans>
</Text>
<Link
href="/settings/saved-feeds"
accessibilityLabel={_(msg`Edit My Feeds`)}
accessibilityHint="">
<CogIcon strokeWidth={1.5} style={pal.icon} size={28} />
</Link>
</View>
)
}
return <View />
} else if (item.type === 'savedFeedNoResults') {
return (
<View
style={{
paddingHorizontal: 16,
paddingTop: 10,
}}>
<Text type="lg" style={pal.textLight}>
<Trans>You don't have any saved feeds!</Trans>
</Text>
</View>
)
} else if (item.type === 'savedFeed') {
return <SavedFeed feedUri={item.feedUri} />
} else if (item.type === 'popularFeedsHeader') {
return (
<>
<View
style={[
pal.view,
styles.header,
{
// This is first in the flatlist without a session -esb
marginTop: hasSession ? 16 : 0,
paddingLeft: isMobile ? 12 : undefined,
paddingRight: 10,
paddingBottom: isMobile ? 6 : undefined,
},
]}>
<Text type="title-lg" style={[pal.text, s.bold]}>
<Trans>Discover new feeds</Trans>
</Text>
{!isMobile && (
<SearchInput
query={query}
onChangeQuery={onChangeQuery}
onPressCancelSearch={onPressCancelSearch}
onSubmitQuery={onSubmitQuery}
style={{flex: 1, maxWidth: 250}}
/>
)}
</View>
{isMobile && (
<View style={{paddingHorizontal: 8, paddingBottom: 10}}>
<SearchInput
query={query}
onChangeQuery={onChangeQuery}
onPressCancelSearch={onPressCancelSearch}
onSubmitQuery={onSubmitQuery}
/>
</View>
)}
</>
)
} else if (item.type === 'popularFeedsLoading') {
return <FeedFeedLoadingPlaceholder />
} else if (item.type === 'popularFeed') {
return (
<FeedSourceCard
feedUri={item.feedUri}
showSaveBtn={hasSession}
showDescription
showLikes
pinOnSave
/>
)
} else if (item.type === 'popularFeedsNoResults') {
return (
<View
style={{
paddingHorizontal: 16,
paddingTop: 10,
paddingBottom: '150%',
}}>
<Text type="lg" style={pal.textLight}>
<Trans>No results found for "{query}"</Trans>
</Text>
</View>
)
}
return null
},
[
_,
hasSession,
isMobile,
pal,
query,
onChangeQuery,
onPressCancelSearch,
onSubmitQuery,
],
)
return (
<View style={[pal.view, styles.container]}>
{isMobile && (
<ViewHeader
title={_(msg`Feeds`)}
canGoBack={false}
renderButton={renderHeaderBtn}
showBorder
/>
)}
{preferences ? <View /> : <ActivityIndicator />}
<FlatList
style={[!isTabletOrDesktop && s.flex1, styles.list]}
data={items}
keyExtractor={item => item.key}
contentContainerStyle={styles.contentContainer}
renderItem={renderItem}
refreshControl={
<RefreshControl
refreshing={isPTR}
onRefresh={isUserSearching ? undefined : onPullToRefresh}
tintColor={pal.colors.text}
titleColor={pal.colors.text}
/>
}
initialNumToRender={10}
onEndReached={onEndReached}
// @ts-ignore our .web version only -prf
desktopFixedHeight
/>
{hasSession && (
<FAB
testID="composeFAB"
onPress={onPressCompose}
icon={<ComposeIcon2 strokeWidth={1.5} size={29} style={s.white} />}
accessibilityRole="button"
accessibilityLabel={_(msg`New post`)}
accessibilityHint=""
/>
)}
</View>
)
}
function SavedFeed({feedUri}: {feedUri: string}) {
const pal = usePalette('default')
const {isMobile} = useWebMediaQueries()
const {data: info, error} = useFeedSourceInfoQuery({uri: feedUri})
if (!info)
return (
<SavedFeedLoadingPlaceholder
key={`savedFeedLoadingPlaceholder:${feedUri}`}
/>
)
return (
<Link
testID={`saved-feed-${info.displayName}`}
href={info.route.href}
style={[pal.border, styles.savedFeed, isMobile && styles.savedFeedMobile]}
hoverStyle={pal.viewLight}
accessibilityLabel={info.displayName}
accessibilityHint=""
asAnchor
anchorNoUnderline>
{error ? (
<View
style={{width: 28, flexDirection: 'row', justifyContent: 'center'}}>
<FontAwesomeIcon
icon="exclamation-circle"
color={pal.colors.textLight}
/>
</View>
) : (
<UserAvatar type="algo" size={28} avatar={info.avatar} />
)}
<View
style={{flex: 1, flexDirection: 'row', gap: 8, alignItems: 'center'}}>
<Text type="lg-medium" style={pal.text} numberOfLines={1}>
{info.displayName}
</Text>
{error ? (
<View style={[styles.offlineSlug, pal.borderDark]}>
<Text type="xs" style={pal.textLight}>
<Trans>Feed offline</Trans>
</Text>
</View>
) : null}
</View>
{isMobile && (
<FontAwesomeIcon
icon="chevron-right"
size={14}
style={pal.textLight as FontAwesomeIconStyle}
/>
)}
</Link>
)
}
function SavedFeedLoadingPlaceholder() {
const pal = usePalette('default')
const {isMobile} = useWebMediaQueries()
return (
<View
style={[
pal.border,
styles.savedFeed,
isMobile && styles.savedFeedMobile,
]}>
<LoadingPlaceholder width={28} height={28} style={{borderRadius: 4}} />
<LoadingPlaceholder width={140} height={12} />
</View>
)
}
const styles = StyleSheet.create({
container: {
flex: 1,
},
list: {
height: '100%',
},
contentContainer: {
paddingBottom: 100,
},
header: {
flexDirection: 'row',
alignItems: 'center',
justifyContent: 'space-between',
gap: 16,
paddingHorizontal: 16,
paddingVertical: 12,
},
savedFeed: {
flexDirection: 'row',
alignItems: 'center',
paddingHorizontal: 16,
paddingVertical: 14,
gap: 12,
borderBottomWidth: 1,
},
savedFeedMobile: {
paddingVertical: 10,
},
offlineSlug: {
borderWidth: 1,
borderRadius: 4,
paddingHorizontal: 4,
paddingVertical: 2,
},
})