2023-01-27 21:03:09 +00:00
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import React, { useCallback, useContext, useState, useEffect } from 'react'
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import { getUsers, User } from '../../Functions/DatabaseFunctions/Users'
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import {
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ListRenderItem,
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NativeScrollEvent,
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NativeSyntheticEvent,
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RefreshControl,
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ScrollView,
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StyleSheet,
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View,
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} from 'react-native'
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import { AppContext } from '../../Contexts/AppContext'
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import { getLastReply, getMainNotes, Note } from '../../Functions/DatabaseFunctions/Notes'
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import { handleInfinityScroll } from '../../Functions/NativeFunctions'
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import { UserContext } from '../../Contexts/UserContext'
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import { RelayPoolContext } from '../../Contexts/RelayPoolContext'
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import { Kind } from 'nostr-tools'
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import { RelayFilters } from '../../lib/nostr/RelayPool/intex'
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import { ActivityIndicator, Button, Text } from 'react-native-paper'
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import NoteCard from '../../Components/NoteCard'
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import { useTheme } from '@react-navigation/native'
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import MaterialCommunityIcons from 'react-native-vector-icons/MaterialCommunityIcons'
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import { t } from 'i18next'
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import { FlatList } from 'react-native-gesture-handler'
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import { getLastReaction } from '../../Functions/DatabaseFunctions/Reactions'
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interface MyFeedProps {
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navigation: any
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setProfileCardPubKey: (profileCardPubKey: string) => void
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}
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export const MyFeed: React.FC<MyFeedProps> = ({ navigation, setProfileCardPubKey }) => {
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const theme = useTheme()
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const { database } = useContext(AppContext)
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const { publicKey } = useContext(UserContext)
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const { lastEventId, relayPool, lastConfirmationtId } = useContext(RelayPoolContext)
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const initialPageSize = 10
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const [notes, setNotes] = useState<Note[]>([])
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const [pageSize, setPageSize] = useState<number>(initialPageSize)
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const [refreshing, setRefreshing] = useState(false)
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useEffect(() => {
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subscribeNotes()
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loadNotes()
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}, [])
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useEffect(() => {
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if (relayPool && publicKey) {
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loadNotes()
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}
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}, [lastEventId, lastConfirmationtId])
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useEffect(() => {
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if (pageSize > initialPageSize) {
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subscribeNotes(true)
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}
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}, [pageSize])
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const onRefresh = useCallback(() => {
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setRefreshing(true)
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subscribeNotes()
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}, [])
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const subscribeNotes: (past?: boolean) => void = async (past) => {
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if (!database || !publicKey) return
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const users: User[] = await getUsers(database, { contacts: true, order: 'created_at DESC' })
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const authors: string[] = [...users.map((user) => user.id), publicKey]
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const message: RelayFilters = {
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kinds: [Kind.Text, Kind.RecommendRelay],
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authors,
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limit: pageSize,
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}
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relayPool?.subscribe('homepage-contacts-main', [message])
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setRefreshing(false)
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}
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const onScroll: (event: NativeSyntheticEvent<NativeScrollEvent>) => void = (event) => {
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if (handleInfinityScroll(event)) {
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setPageSize(pageSize + initialPageSize)
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}
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}
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const loadNotes: () => void = () => {
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if (database && publicKey) {
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getMainNotes(database, publicKey, pageSize, true).then((notes) => {
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setNotes(notes)
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if (notes.length > 0) {
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relayPool?.subscribe('homepage-contacts-meta', [
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{
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kinds: [Kind.Metadata],
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authors: notes.map((note) => note.pubkey ?? ''),
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},
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])
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const notedIds = notes.map((note) => note.id ?? '')
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getLastReaction(database, { eventIds: notes.map((note) => note.id ?? '') }).then(
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(lastReaction) => {
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relayPool?.subscribe('homepage-reactions', [
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{
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kinds: [Kind.Reaction],
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'#e': notedIds,
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since: lastReaction?.created_at ?? 0,
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},
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])
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},
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)
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getLastReply(database, { eventIds: notes.map((note) => note.id ?? '') }).then(
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(lastReply) => {
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relayPool?.subscribe('homepage-replies', [
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{
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kinds: [Kind.Text],
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'#e': notedIds,
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since: lastReply?.created_at ?? 0,
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},
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])
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},
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)
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}
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})
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}
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}
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const renderItem: ListRenderItem<Note> = ({ item, index }) => {
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return (
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<View style={styles.noteCard} key={item.id}>
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<NoteCard
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note={item}
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onPressUser={(user) => {
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setProfileCardPubKey(user.id)
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}}
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/>
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</View>
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)
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}
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return (
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2023-01-29 20:28:23 +00:00
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<View>
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2023-01-27 21:03:09 +00:00
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{notes && notes.length > 0 ? (
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<ScrollView
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onScroll={onScroll}
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horizontal={false}
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showsVerticalScrollIndicator={false}
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refreshControl={<RefreshControl refreshing={refreshing} onRefresh={onRefresh} />}
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>
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<FlatList showsVerticalScrollIndicator={false} data={notes} renderItem={renderItem} />
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{notes.length >= initialPageSize && (
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<ActivityIndicator animating={true} style={styles.activityIndicator} />
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)}
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</ScrollView>
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) : (
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<View style={styles.blank}>
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<MaterialCommunityIcons
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name='account-group-outline'
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size={64}
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style={styles.center}
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color={theme.colors.onPrimaryContainer}
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/>
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<Text variant='headlineSmall' style={styles.center}>
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{t('homeFeed.emptyTitle')}
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</Text>
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<Text variant='bodyMedium' style={styles.center}>
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{t('homeFeed.emptyDescription')}
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</Text>
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<Button mode='contained' compact onPress={() => navigation.jumpTo('contacts')}>
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{t('homeFeed.emptyButton')}
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</Button>
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</View>
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)}
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</View>
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)
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}
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const styles = StyleSheet.create({
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noteCard: {
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marginTop: 16,
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},
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center: {
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alignContent: 'center',
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textAlign: 'center',
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},
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blank: {
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justifyContent: 'space-between',
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height: 220,
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marginTop: 91,
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},
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activityIndicator: {
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padding: 16,
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},
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})
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export default MyFeed
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