feat(social): add friends, private chats, inbox and music sharing

apps/mobile/src/features/social/Social.tsx

@@ -0,0 +1,147 @@
+import { attachmentPath, socialApi, uuidv7, type MusicAttachment, type SocialAction, type SocialPerson } from '@pipu/core';
+import { useInfiniteQuery, useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
+import { useFocusEffect, useRouter } from 'expo-router';
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
+import { AppState, Clipboard, KeyboardAvoidingView, Modal, ScrollView, Share, Text, View } from 'react-native';
+import { useSession, useSessionCtx, useUser } from '../../lib/session';
+import { useColors } from '../../theme';
+import { Button, ErrorBox, Field, H1, Muted, Screen, useErrorText } from '../../ui/kit';
+
+function useSocial() {
+  const session = useSession();
+  const { server } = useSessionCtx();
+  const user = useUser();
+  const api = useMemo(() => socialApi(session), [session]);
+  const [active, setActive] = useState(AppState.currentState === 'active');
+  useEffect(() => { const sub = AppState.addEventListener('change', s => setActive(s === 'active')); return () => sub.remove(); }, []);
+  const key = ['m-social', server, user.id] as const;
+  const inbox = useQuery({ queryKey: key, queryFn: api.inbox, enabled: active, refetchInterval: active ? 15_000 : false });
+  return { api, key, inbox, user, active };
+}
+export function useSocialUnread() { return useSocial().inbox.data?.unread ?? 0; }
+export function MusicShareSheet({ attachment, url, close }: { attachment: MusicAttachment; url: string; close: () => void }) {
+  const { t } = useTranslation();
+  const { inbox, api, key } = useSocial();
+  const cache = useQueryClient();
+  const errorText = useErrorText();
+  const [sent, setSent] = useState<string[]>([]);
+  const [copied, setCopied] = useState(false);
+  const ids = useRef(new Map<string, string>());
+  const send = useMutation({ mutationFn: async (peer: string) => {
+    if (peer === 'copy') { Clipboard.setString(url); setCopied(true); return; }
+    if (peer === 'external') { await Share.share({ title: attachment.title, message: url }); return; }
+    let id = ids.current.get(peer); if (!id) { id = uuidv7(); ids.current.set(peer, id); }
+    await api.send(peer, { id, text: attachment.title, attachment_kind: attachment.kind, attachment_id: attachment.id });
+    setSent(v => [...v, peer]); await cache.invalidateQueries({ queryKey: key });
+  } });
+  return <Modal animationType="slide" onRequestClose={close}><Screen><ScrollView contentContainerStyle={{ padding: 24, gap: 16 }}>
+    <Button title={t('form.cancel')} variant="ghost" onPress={close} />
+    <H1>{t('player.share')}</H1><Muted>{attachment.title}</Muted>
+    <Button title={t(copied ? 'social.copied' : 'social.copy')} disabled={send.isPending} onPress={() => send.mutate('copy')} />
+    <Button title={t('social.external')} variant="secondary" disabled={send.isPending} onPress={() => send.mutate('external')} />
+    <H1>{t('social.send_friend')}</H1>
+    {inbox.isPending && <Muted>{t('social.loading')}</Muted>}
+    {inbox.data && !inbox.data.people.some(p => p.relationship === 'friend') && <Muted>{t('social.no_friends_share')}</Muted>}
+    {inbox.data?.people.filter(p => p.relationship === 'friend').map(p => <Button key={p.id} title={`${p.display_name} · ${t(sent.includes(p.id) ? 'social.sent' : 'social.send')}`} variant="secondary" disabled={send.isPending || sent.includes(p.id)} onPress={() => send.mutate(p.id)} />)}
+    <ErrorBox>{send.error || inbox.error ? errorText(send.error ?? inbox.error) : null}</ErrorBox>
+  </ScrollView></Screen></Modal>;
+}
+
+export function SocialScreen({ root = false }: { root?: boolean }) {
+  const { t } = useTranslation();
+  const colors = useColors();
+  const router = useRouter();
+  const { api, inbox, key } = useSocial();
+  const cache = useQueryClient();
+  const errorText = useErrorText();
+  const [search, setSearch] = useState('');
+  const [q, setQ] = useState('');
+  const [peer, setPeer] = useState('');
+  const [notifications, setNotifications] = useState(false);
+  useEffect(() => { const timer = setTimeout(() => setQ(search.trim()), 300); return () => clearTimeout(timer); }, [search]);
+  const results = useQuery({ queryKey: [...key, 'search', q], queryFn: () => api.search(q), enabled: q.length >= 2 });
+  const act = useMutation({ mutationFn: (body: SocialAction) => api.action(body), onSuccess: async () => { await cache.invalidateQueries({ queryKey: key }); } });
+  const selected = inbox.data?.people.find(p => p.id === peer && p.relationship === 'friend');
+  if (selected) return <Screen><Button title={t('social.back')} variant="ghost" onPress={() => setPeer('')} /><Chat key={selected.id} person={selected} /></Screen>;
+  const people = q.length >= 2 ? results.data ?? [] : inbox.data?.people ?? [];
+  return <Screen><ScrollView keyboardShouldPersistTaps="handled" contentContainerStyle={{ padding: 20, gap: 16 }}>
+    {!root && <Button title={t('social.back')} variant="ghost" onPress={() => router.back()} />}
+    <H1>{t('social.title')}</H1><Muted>{t('social.subtitle')}</Muted>
+    <View style={{ flexDirection: 'row', gap: 8, flexWrap: 'wrap' }}>
+      <Button title={t('social.people')} variant={notifications ? 'ghost' : 'primary'} onPress={() => setNotifications(false)} />
+      <Button title={`${t('social.notifications')} ${inbox.data?.unread || ''}`} variant={notifications ? 'primary' : 'ghost'} onPress={() => setNotifications(true)} />
+    </View>
+    <ErrorBox>{inbox.error || results.error || act.error ? errorText(inbox.error ?? results.error ?? act.error) : null}</ErrorBox>
+    {inbox.isPending && <Muted>{t('social.loading')}</Muted>}
+    {notifications ? <>
+      {inbox.data?.notifications.length === 0 && <Muted>{t('social.no_notifications')}</Muted>}
+      {inbox.data?.notifications.map(n => <View key={n.id} style={{ padding: 16, borderRadius: 16, backgroundColor: colors.surface, gap: 10, borderWidth: 1, borderColor: n.read ? colors.line : colors.accent }}>
+        <Text style={{ color: colors.text, fontWeight: '600' }}>{n.actor_name}</Text><Muted>{t(`social.kind_${n.kind}`)}</Muted><Muted>{new Date(n.created_at).toLocaleString()}</Muted>
+        <Button title={t('social.open')} variant="secondary" onPress={() => { setNotifications(false); setSearch(''); setQ(''); setPeer(n.actor_id); }} />
+        {!n.read && <Button title={t('social.mark_read')} variant="ghost" disabled={act.isPending} onPress={() => act.mutate({ action: 'read_notification', target_id: n.id })} />}
+      </View>)}
+    </> : <>
+      <Field label={t('social.search')} value={search} onChangeText={setSearch} maxLength={80} />
+      {q.length >= 2 && results.isFetching && <Muted>{t('social.loading')}</Muted>}
+      {!people.length && inbox.data && !results.isFetching && <Muted>{t(q.length >= 2 ? 'social.no_results' : 'social.empty')}</Muted>}
+      {people.map(p => <View key={p.id} style={{ padding: 16, borderRadius: 16, backgroundColor: colors.surface, gap: 10 }}>
+        <Text style={{ color: colors.text, fontWeight: '600', fontSize: 17 }}>{p.display_name}</Text><Muted>@{p.username} · {t(`social.rel_${p.relationship}`)}</Muted>
+        {p.relationship === 'friend' && <Button title={`${t('social.chat')}${p.unread ? ` · ${p.unread}` : ''}`} onPress={() => setPeer(p.id)} />}
+        {p.relationship === 'none' && <Button title={t('social.add')} disabled={act.isPending} onPress={() => act.mutate({ action: 'request', target_id: p.id })} />}
+        {p.relationship === 'incoming' && <Button title={t('social.accept')} disabled={act.isPending} onPress={() => act.mutate({ action: 'accept', target_id: p.id })} />}
+        {['friend', 'incoming', 'outgoing'].includes(p.relationship) && <Button title={t(p.relationship === 'incoming' ? 'social.decline' : p.relationship === 'outgoing' ? 'social.cancel' : 'social.remove')} variant="ghost" disabled={act.isPending} onPress={() => act.mutate({ action: 'remove', target_id: p.id })} />}
+        <Button title={t(p.relationship === 'blocked' ? 'social.unblock' : 'social.block')} variant="ghost" disabled={act.isPending} onPress={() => act.mutate({ action: p.relationship === 'blocked' ? 'unblock' : 'block', target_id: p.id })} />
+      </View>)}
+    </>}
+  </ScrollView></Screen>;
+}
+function Chat({ person }: { person: SocialPerson }) {
+  const { t } = useTranslation();
+  const colors = useColors();
+  const { server } = useSessionCtx();
+  const { api, key, user, active } = useSocial();
+  const router = useRouter();
+  const cache = useQueryClient();
+  const errorText = useErrorText();
+  const [text, setText] = useState('');
+  const [focused, setFocused] = useState(false);
+  useFocusEffect(useCallback(() => { setFocused(true); return () => setFocused(false); }, []));
+  const pending = useRef<{ id: string; text: string } | null>(null);
+  const messages = useInfiniteQuery({ queryKey: [...key, 'chat', person.id], initialPageParam: undefined as number | undefined,
+    queryFn: ({ pageParam }) => api.messages(person.id, pageParam), getNextPageParam: last => last.length === 50 ? last[0]?.seq : undefined, enabled: active && focused, refetchInterval: active && focused ? 8_000 : false });
+  const list = [...(messages.data?.pages ?? [])].reverse().flat();
+  const last = list.at(-1)?.seq;
+  const unread = list.some(m => m.sender_id !== user.id && !m.read);
+  useEffect(() => {
+    if (last && unread && active && focused) void api.action({ action: 'read_chat', target_id: person.id, up_to_seq: last }).then(() => cache.invalidateQueries({ queryKey: key })).catch(() => undefined);
+  }, [last, unread, active, focused, api, person.id, messages.dataUpdatedAt]);
+  const send = useMutation({ mutationFn: async () => {
+    if (!pending.current || pending.current.text !== text) pending.current = { id: uuidv7(), text };
+    return api.send(person.id, { ...pending.current, attachment_kind: 'none' });
+  }, onSuccess: async () => { setText(''); pending.current = null; await cache.invalidateQueries({ queryKey: key }); } });
+  const scroll = useRef<ScrollView>(null);
+  const [scrollBottom, setScrollBottom] = useState(true);
+  useEffect(() => { setScrollBottom(true); }, [last]);
+  return <KeyboardAvoidingView behavior="padding" style={{ flex: 1 }}>
+    <View style={{ padding: 16, gap: 8 }}><H1>{person.display_name}</H1><Muted>{t('social.chat_hint')}</Muted><ErrorBox>{messages.error || send.error ? errorText(messages.error ?? send.error) : null}</ErrorBox></View>
+    <ScrollView ref={scroll} keyboardShouldPersistTaps="handled" contentContainerStyle={{ padding: 16, gap: 12 }} onContentSizeChange={() => { if (scrollBottom) scroll.current?.scrollToEnd({ animated: false }); }}>
+      {messages.hasNextPage && <Button title={t('social.older')} variant="ghost" busy={messages.isFetchingNextPage} onPress={() => { setScrollBottom(false); void messages.fetchNextPage(); }} />}
+      {messages.isPending && <Muted>{t('social.loading')}</Muted>}
+      {messages.isSuccess && !list.length && <Muted>{t('social.first_message')}</Muted>}
+      {list.map(m => <View key={m.id} style={{ alignSelf: m.sender_id === user.id ? 'flex-end' : 'flex-start', maxWidth: '88%', padding: 14, borderRadius: 16, backgroundColor: m.sender_id === user.id ? colors['accent-soft'] : colors.surface2, gap: 8 }}>
+        <Text style={{ color: colors.text, fontSize: 15 }}>{m.text}</Text>
+        {attachmentPath(m) && <Button title={t(m.attachment_kind === 'track' ? 'social.listen_track' : 'social.listen_playlist')} variant="secondary" onPress={() => {
+          if (!server || !m.attachment_id) return;
+          if (m.attachment_kind === 'track') router.push({ pathname: '/social-track', params: { id: m.attachment_id } });
+          else router.push({ pathname: '/social-playlist', params: { id: m.attachment_id } });
+        }} />}
+        <Muted>{new Date(m.created_at).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}{m.sender_id === user.id ? ` · ${t(m.read ? 'social.read' : 'social.sent')}` : ''}</Muted>
+      </View>)}
+    </ScrollView>
+    <View style={{ padding: 16, gap: 12, borderTopWidth: 1, borderTopColor: colors.line }}>
+      <Field label={t('social.message')} value={text} onChangeText={setText} maxLength={4000} multiline editable={!send.isPending} />
+      <Button title={t('social.send')} disabled={!text.trim()} busy={send.isPending} onPress={() => send.mutate()} />
+    </View>
+  </KeyboardAvoidingView>;
+}