1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
import React from 'react'
import {
ActivityIndicator,
type ListRenderItemInfo,
StyleSheet,
View,
} from 'react-native'
import {msg} from '@lingui/macro'
import {useLingui} from '@lingui/react'
import {useInitialNumToRender} from '#/lib/hooks/useInitialNumToRender'
import {cleanError} from '#/lib/strings/errors'
import {s} from '#/lib/styles'
import {logger} from '#/logger'
import {useModerationOpts} from '#/state/preferences/moderation-opts'
import {useNotificationFeedQuery} from '#/state/queries/notifications/feed'
import {EmptyState} from '#/view/com/util/EmptyState'
import {ErrorMessage} from '#/view/com/util/error/ErrorMessage'
import {List, type ListProps, type ListRef} from '#/view/com/util/List'
import {NotificationFeedLoadingPlaceholder} from '#/view/com/util/LoadingPlaceholder'
import {LoadMoreRetryBtn} from '#/view/com/util/LoadMoreRetryBtn'
import {NotificationFeedItem} from './NotificationFeedItem'
const EMPTY_FEED_ITEM = {_reactKey: '__empty__'}
const LOAD_MORE_ERROR_ITEM = {_reactKey: '__load_more_error__'}
const LOADING_ITEM = {_reactKey: '__loading__'}
export function NotificationFeed({
filter,
enabled,
scrollElRef,
onPressTryAgain,
onScrolledDownChange,
ListHeaderComponent,
refreshNotifications,
}: {
filter: 'all' | 'mentions'
enabled: boolean
scrollElRef?: ListRef
onPressTryAgain?: () => void
onScrolledDownChange: (isScrolledDown: boolean) => void
ListHeaderComponent?: ListProps['ListHeaderComponent']
refreshNotifications: () => Promise<void>
}) {
const initialNumToRender = useInitialNumToRender()
const [isPTRing, setIsPTRing] = React.useState(false)
const {_} = useLingui()
const moderationOpts = useModerationOpts()
const {
data,
isFetching,
isFetched,
isError,
error,
hasNextPage,
isFetchingNextPage,
fetchNextPage,
} = useNotificationFeedQuery({
enabled: enabled && !!moderationOpts,
filter,
})
// previously, this was `!isFetching && !data?.pages[0]?.items.length`
// however, if the first page had no items (can happen in the mentions tab!)
// it would flicker the empty state whenever it was loading.
// therefore, we need to find if *any* page has items. in 99.9% of cases,
// the `.find()` won't need to go any further than the first page -sfn
const isEmpty =
!isFetching && !data?.pages.find(page => page.items.length > 0)
const items = React.useMemo(() => {
let arr: any[] = []
if (isFetched) {
if (isEmpty) {
arr = arr.concat([EMPTY_FEED_ITEM])
} else if (data) {
for (const page of data?.pages) {
arr = arr.concat(page.items)
}
}
if (isError && !isEmpty) {
arr = arr.concat([LOAD_MORE_ERROR_ITEM])
}
} else {
arr.push(LOADING_ITEM)
}
return arr
}, [isFetched, isError, isEmpty, data])
const onRefresh = React.useCallback(async () => {
try {
setIsPTRing(true)
await refreshNotifications()
} catch (err) {
logger.error('Failed to refresh notifications feed', {
message: err,
})
} finally {
setIsPTRing(false)
}
}, [refreshNotifications, setIsPTRing])
const onEndReached = React.useCallback(async () => {
if (isFetching || !hasNextPage || isError) return
try {
await fetchNextPage()
} catch (err) {
logger.error('Failed to load more notifications', {message: err})
}
}, [isFetching, hasNextPage, isError, fetchNextPage])
const onPressRetryLoadMore = React.useCallback(() => {
fetchNextPage()
}, [fetchNextPage])
const renderItem = React.useCallback(
({item, index}: ListRenderItemInfo<any>) => {
if (item === EMPTY_FEED_ITEM) {
return (
<EmptyState
icon="bell"
message={_(msg`No notifications yet!`)}
style={styles.emptyState}
/>
)
} else if (item === LOAD_MORE_ERROR_ITEM) {
return (
<LoadMoreRetryBtn
label={_(
msg`There was an issue fetching notifications. Tap here to try again.`,
)}
onPress={onPressRetryLoadMore}
/>
)
} else if (item === LOADING_ITEM) {
return <NotificationFeedLoadingPlaceholder />
}
return (
<NotificationFeedItem
highlightUnread={filter === 'all'}
item={item}
moderationOpts={moderationOpts!}
hideTopBorder={index === 0}
/>
)
},
[moderationOpts, _, onPressRetryLoadMore, filter],
)
const FeedFooter = React.useCallback(
() =>
isFetchingNextPage ? (
<View style={styles.feedFooter}>
<ActivityIndicator />
</View>
) : (
<View />
),
[isFetchingNextPage],
)
return (
<View style={s.hContentRegion}>
{error && (
<ErrorMessage
message={cleanError(error)}
onPressTryAgain={onPressTryAgain}
/>
)}
<List
testID="notifsFeed"
ref={scrollElRef}
data={items}
keyExtractor={item => item._reactKey}
renderItem={renderItem}
ListHeaderComponent={ListHeaderComponent}
ListFooterComponent={FeedFooter}
refreshing={isPTRing}
onRefresh={onRefresh}
onEndReached={onEndReached}
onEndReachedThreshold={2}
onScrolledDownChange={onScrolledDownChange}
contentContainerStyle={s.contentContainer}
desktopFixedHeight
initialNumToRender={initialNumToRender}
windowSize={11}
sideBorders={false}
removeClippedSubviews={true}
/>
</View>
)
}
const styles = StyleSheet.create({
feedFooter: {paddingTop: 20},
emptyState: {paddingVertical: 40},
})
|
