719 lines
24 KiB
TypeScript
719 lines
24 KiB
TypeScript
"use client";
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/**
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* /chats/[id] — a single thread.
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*
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* History pages upward from the newest message using `before_seq` (a keyset
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* cursor, not an offset), so paging stays stable while new messages keep
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* arriving at the top.
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*
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* Live updates come from the thread's own private channel. Subscribing is
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* gated by the BFF: it only signs `private-conversation.{id}` for an actual
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* participant, so an unauthorised subscription is refused at the server.
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*
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* Composer, attachments and the message context menu land in later phases —
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* this screen is read + receipts.
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*/
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import { useCallback, useEffect, useRef, useState } from "react";
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import { useParams, useRouter } from "next/navigation";
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import Link from "next/link";
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import { ArrowLeft, BellOff } from "lucide-react";
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import { useAuth } from "@/components/auth/auth-provider";
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import { useAuthGate } from "@/components/auth/auth-gate";
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import { UserAvatar } from "@/components/ui/user-avatar";
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import { KautilyaIcon } from "@/components/selection-toolbar/shared";
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import { MessageList } from "@/components/chat/message-list";
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import { ChatComposer } from "@/components/chat/chat-composer";
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import {
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MessageMenu,
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type MenuPoint,
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} from "@/components/chat/message-menu";
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import { ForwardDialog } from "@/components/chat/forward-dialog";
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import { ReactionsDrawer } from "@/components/chat/reactions-drawer";
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import { toast } from "sonner";
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import { channelAuthorizer } from "@/lib/realtime";
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import { cn } from "@/lib/utils";
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import { useVisualViewport } from "@/lib/use-visual-viewport";
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import { useNotifications } from "@/components/notifications/notifications-provider";
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import {
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chat,
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conversationTitle,
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groupAvatarUrl,
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isMuted,
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senderName,
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senderPeer,
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type ChatMessage,
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type ConversationDetail,
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type Receipts,
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type UploadedAttachment,
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} from "@/lib/chat";
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/** How long a typing indicator survives its last ping. */
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const TYPING_TTL_MS = 5000;
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/** How often we tell the thread we are typing, while typing. */
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const TYPING_PING_MS = 3000;
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const PAGE_SIZE = 30;
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export default function ChatThreadPage() {
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const { id } = useParams<{ id: string }>();
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const { user, loading } = useAuth();
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const { requireAuth } = useAuthGate();
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const router = useRouter();
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const [meta, setMeta] = useState<ConversationDetail | null>(null);
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const [messages, setMessages] = useState<ChatMessage[]>([]);
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const [receipts, setReceipts] = useState<Receipts | null>(null);
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const [hasMore, setHasMore] = useState(true);
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const [loadingMore, setLoadingMore] = useState(false);
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const [state, setState] = useState<"loading" | "ready" | "error">("loading");
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const [replyTo, setReplyTo] = useState<ChatMessage | null>(null);
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const [menu, setMenu] = useState<{ message: ChatMessage; point: MenuPoint } | null>(null);
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const [forwarding, setForwarding] = useState<ChatMessage | null>(null);
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const [starredIds, setStarredIds] = useState<Set<string>>(new Set());
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// user id → when they last typed. Kept as timestamps rather than a boolean
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// so the indicator expires on its own: there is no "stopped typing" event,
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// and inventing one would still be lost on a dropped connection.
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const [typingAt, setTypingAt] = useState<Record<string, number>>({});
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// While the keyboard is up the thread is sized from the visual viewport
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// instead of dvh — see useVisualViewport for why dvh can't do this on iOS.
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// Declared with the other hooks: the early return below means anything
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// placed after it would run conditionally.
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const { refreshChatUnread } = useNotifications();
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const viewport = useVisualViewport();
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const keyboardOpen = viewport?.keyboardOpen ?? false;
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// Guards against two loads racing (scroll handler + the short-page effect).
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const loadingRef = useRef(false);
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useEffect(() => {
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if (loading || user) return;
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let cancelled = false;
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(async () => {
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const ok = await requireAuth();
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if (!ok && !cancelled) router.replace("/");
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})();
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return () => {
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cancelled = true;
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};
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}, [loading, user, requireAuth, router]);
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/** Newest page first; messages are held ascending for rendering. */
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const loadNewest = useCallback(async () => {
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try {
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const page = await chat.messages(id, 0, PAGE_SIZE);
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setMessages([...page].reverse());
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setHasMore(page.length === PAGE_SIZE);
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setState("ready");
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} catch {
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setState("error");
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}
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}, [id]);
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const loadOlder = useCallback(async () => {
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if (loadingRef.current || !hasMore) return;
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const oldest = messages[0]?.seq;
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if (!oldest) return;
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loadingRef.current = true;
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setLoadingMore(true);
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try {
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const page = await chat.messages(id, oldest, PAGE_SIZE);
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if (page.length > 0) {
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setMessages((prev) => [...[...page].reverse(), ...prev]);
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}
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setHasMore(page.length === PAGE_SIZE);
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} catch {
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// Leave hasMore alone — a transient failure shouldn't permanently end
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// history; the next scroll retries.
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} finally {
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loadingRef.current = false;
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setLoadingMore(false);
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}
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}, [id, hasMore, messages]);
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// One request for the thread: title, avatar, mute state, and the
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// participant list the reply banner and quoted lines need to name people.
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useEffect(() => {
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if (!user) return;
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let cancelled = false;
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chat
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.detail(id)
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.then((d) => {
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if (!cancelled) setMeta(d);
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})
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.catch(() => {
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/* the message list surfaces the failure */
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});
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return () => {
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cancelled = true;
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};
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}, [id, user]);
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useEffect(() => {
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if (!user) return;
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void loadNewest();
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chat.receipts(id).then(setReceipts).catch(() => {});
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}, [id, user, loadNewest]);
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/**
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* Send optimistically: the bubble appears immediately keyed by a
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* client-generated id, then the server's version replaces it. That id is
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* also what makes a retry idempotent server-side, so a flaky connection
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* can't produce two bubbles.
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*/
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const sendMessage = useCallback(
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(
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body: string,
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replyToId?: string,
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previewUrl?: string,
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attachments?: UploadedAttachment[],
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) => {
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const clientMsgId = crypto.randomUUID();
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const optimistic: ChatMessage = {
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id: clientMsgId,
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conversation_id: id,
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seq: Number.MAX_SAFE_INTEGER,
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sender_id: user?.id ?? null,
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kind: "text",
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body,
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entities: [],
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client_msg_id: clientMsgId,
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reply_to_id: replyToId ?? null,
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attachments: [],
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reactions: [],
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created_at: new Date().toISOString(),
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pending: true,
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};
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setMessages((prev) => [...prev, optimistic]);
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chat
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.send(id, body, { clientMsgId, replyToId, previewUrl, attachments })
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.then((saved) => {
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setMessages((prev) => {
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// Drop the placeholder and any realtime echo of the same message.
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const without = prev.filter(
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(m) => m.id !== clientMsgId && m.id !== saved.id,
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);
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return [...without, saved];
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});
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})
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.catch(() => {
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// Keep the bubble and its text — discarding it loses what the user
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// wrote. Marking it failed offers a retry instead.
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setMessages((prev) =>
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prev.map((m) =>
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m.id === clientMsgId ? { ...m, pending: false, failed: true } : m,
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),
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);
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});
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},
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[id, user?.id],
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);
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/**
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* Retry a failed send, REUSING its client_msg_id. If the original actually
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* reached the server and only the response was lost, the server returns the
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* stored message instead of writing a second one.
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*/
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const retryMessage = useCallback(
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(failed: ChatMessage) => {
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const clientMsgId = failed.client_msg_id ?? failed.id;
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setMessages((prev) =>
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prev.map((m) =>
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m.id === failed.id ? { ...m, pending: true, failed: false } : m,
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),
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);
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chat
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.send(id, failed.body, {
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clientMsgId,
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replyToId: failed.reply_to_id ?? undefined,
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})
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.then((saved) => {
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setMessages((prev) => [
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...prev.filter((m) => m.id !== failed.id && m.id !== saved.id),
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saved,
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]);
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})
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.catch(() => {
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setMessages((prev) =>
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prev.map((m) =>
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m.id === failed.id ? { ...m, pending: false, failed: true } : m,
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),
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);
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});
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},
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[id],
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);
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// Which messages the caller has starred, so bubbles can show it.
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const loadStars = useCallback(() => {
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chat
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.starred(id)
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.then((rows) => setStarredIds(new Set((rows ?? []).map((m) => m.id))))
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.catch(() => {});
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}, [id]);
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useEffect(() => {
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if (!user) return;
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loadStars();
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}, [user, loadStars]);
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const toggleStar = useCallback(
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async (m: ChatMessage) => {
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const starred = starredIds.has(m.id);
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try {
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await chat.setStar(id, m.id, !starred);
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setStarredIds((prev) => {
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const next = new Set(prev);
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if (starred) next.delete(m.id);
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else next.add(m.id);
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return next;
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});
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} catch {
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toast.error("Could not update the star");
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}
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},
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[id, starredIds],
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);
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const copyMessage = useCallback((m: ChatMessage) => {
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// The stored body is clean text — no markers, no markup — so this is
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// exactly what the reader sees.
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navigator.clipboard
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.writeText(m.body)
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.then(() => toast.success("Copied"))
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.catch(() => toast.error("Could not copy"));
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}, []);
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const deleteMessage = useCallback(
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async (m: ChatMessage, scope: "me" | "everyone") => {
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if (
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scope === "everyone" &&
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!window.confirm("Delete this message for everyone?")
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) {
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return;
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}
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try {
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await chat.deleteMessage(id, m.id, scope);
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if (scope === "me") {
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setMessages((prev) => prev.filter((x) => x.id !== m.id));
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} else {
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// Tombstone in place — the realtime event does the same for others.
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setMessages((prev) =>
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prev.map((x) =>
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x.id === m.id
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? { ...x, deleted_at: new Date().toISOString(), body: "", attachments: [] }
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: x,
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),
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);
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}
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} catch {
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toast.error("Could not delete the message");
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}
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},
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[id],
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);
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const reportMessage = useCallback(
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async (m: ChatMessage) => {
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const reason = window.prompt(
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"Report this message. What's wrong with it?",
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"",
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);
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if (reason === null) return;
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try {
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await chat.report(id, m.id, "abuse", reason);
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toast.success("Reported. Our moderators will review it.");
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} catch {
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toast.error("Could not send the report");
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}
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},
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[id],
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);
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/** Mark everything visible as read, so the sender's ticks turn blue. */
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// Expire stale typers. A ticking clock rather than a timer per person: one
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// interval regardless of how many are in the room, and it stops entirely
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// once nobody is typing.
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const [now, setNow] = useState(0);
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useEffect(() => {
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if (Object.keys(typingAt).length === 0) return;
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const t = setInterval(() => setNow(Date.now()), 1000);
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return () => clearInterval(t);
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}, [typingAt]);
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// Ids only. Resolving names here would call nameFor before it is declared
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// further down — a temporal-dead-zone crash that TypeScript does not catch,
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// because the call would sit inside a .map callback.
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// `now || Date.now()` keeps the first render correct while still depending
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// on the ticking clock above.
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const typingIds = Object.entries(typingAt)
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.filter(([, at]) => (now || Date.now()) - at < TYPING_TTL_MS)
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.map(([uid]) => uid);
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/** Tell the thread we are composing, at most once every few seconds. */
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const typingSentAt = useRef(0);
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const notifyTyping = useCallback(() => {
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const t = Date.now();
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if (t - typingSentAt.current < TYPING_PING_MS) return;
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typingSentAt.current = t;
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chat.typing(id).catch(() => {});
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}, [id]);
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/** Replace one message in place, after its reactions changed. */
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const refreshMessage = useCallback(
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async (messageId: string) => {
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try {
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const fresh = await chat.message(id, messageId);
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setMessages((prev) =>
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prev.map((m) => (m.id === messageId ? { ...m, ...fresh } : m)),
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);
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} catch {
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/* a stale chip is not worth an error surface */
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}
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},
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[id],
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);
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/**
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* Set or toggle a reaction. Picking the emoji you already chose removes it,
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* which is what makes the chip and the double-tap heart both behave as
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* toggles.
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*/
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const react = useCallback(
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async (message: ChatMessage, emoji: string) => {
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const mine = message.reactions?.find((r) => r.mine)?.emoji;
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try {
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if (mine === emoji) await chat.unreact(id, message.id);
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else await chat.react(id, message.id, emoji);
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// The server publishes a `reaction` event, but the actor is on the
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// same channel and would otherwise wait a round trip to see it.
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await refreshMessage(message.id);
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} catch {
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toast.error("Could not react");
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}
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},
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[id, refreshMessage],
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);
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// Which message's reaction list is open, if any.
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const [reactionsFor, setReactionsFor] = useState<string | null>(null);
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/**
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* The trail does one of two things, never both: retract your reaction if
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* you have one, otherwise show who reacted. Rolling both into one control
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* keeps the bubble uncluttered, at the cost that seeing the list means
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* removing your own reaction first.
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*/
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const onTrailClick = useCallback(
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(message: ChatMessage) => {
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const mine = message.reactions?.find((r) => r.mine)?.emoji;
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if (mine) void react(message, mine);
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else setReactionsFor(message.id);
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},
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[react],
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);
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const markRead = useCallback(
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(seq: number) => {
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if (!seq) return;
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// Refresh the nav badge afterwards: without this it stays lit until the
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// next incoming message, since nothing else tells it this thread was
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// read.
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chat
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.markRead(id, seq)
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.then(refreshChatUnread)
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.catch(() => {});
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},
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[id, refreshChatUnread],
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);
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useEffect(() => {
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// Skip the optimistic sentinel — only a real server seq is worth acking.
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const real = messages.filter((m) => !m.pending && !m.failed);
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const newest = real[real.length - 1]?.seq;
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if (newest) markRead(newest);
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}, [messages, markRead]);
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// Live thread updates.
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useEffect(() => {
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if (!user) return;
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const key = process.env.NEXT_PUBLIC_SOKETI_KEY;
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const host = process.env.NEXT_PUBLIC_SOKETI_HOST;
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if (!key || !host) return;
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const port = Number(process.env.NEXT_PUBLIC_SOKETI_PORT || "443");
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const forceTLS =
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(process.env.NEXT_PUBLIC_SOKETI_FORCE_TLS ?? "true") !== "false";
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const channelName = `private-conversation.${id}`;
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let cancelled = false;
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let cleanup: (() => void) | undefined;
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void import("pusher-js").then(({ default: Pusher }) => {
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if (cancelled) return;
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const pusher = new Pusher(key, {
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wsHost: host,
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wsPort: port,
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wssPort: port,
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forceTLS,
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enabledTransports: ["ws", "wss"],
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disableStats: true,
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cluster: "",
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channelAuthorization: { customHandler: channelAuthorizer },
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});
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const channel = pusher.subscribe(channelName);
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channel.bind("message", (m: ChatMessage) => {
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setMessages((prev) => {
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// The echo of our own send may arrive before or after the HTTP
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// response, so match on both ids: the server's and the one we
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// generated for the optimistic bubble.
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if (
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prev.some(
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(x) => x.id === m.id || (!!m.client_msg_id && x.id === m.client_msg_id),
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)
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) {
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return prev.map((x) =>
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m.client_msg_id && x.id === m.client_msg_id ? m : x,
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);
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}
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return [...prev, m];
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});
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});
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channel.bind("message_deleted", ({ message_id }: { message_id: string }) => {
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setMessages((prev) =>
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prev.map((x) =>
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x.id === message_id
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? { ...x, deleted_at: new Date().toISOString(), body: "", attachments: [] }
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: x,
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),
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);
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});
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channel.bind("reaction", ({ message_id }: { message_id: string }) => {
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void refreshMessage(message_id);
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});
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channel.bind("typing", ({ user_id }: { user_id: string }) => {
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// Ignore your own keystrokes echoing back off the channel.
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if (!user_id || user_id === user?.id) return;
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setTypingAt((prev) => ({ ...prev, [user_id]: Date.now() }));
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});
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channel.bind("receipt", () => {
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chat.receipts(id).then(setReceipts).catch(() => {});
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});
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cleanup = () => {
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channel.unbind_all();
|
|
pusher.unsubscribe(channelName);
|
|
pusher.disconnect();
|
|
};
|
|
});
|
|
|
|
return () => {
|
|
cancelled = true;
|
|
cleanup?.();
|
|
};
|
|
}, [id, user, refreshMessage]);
|
|
|
|
if (loading || !user) {
|
|
return (
|
|
<main className="flex-1 px-4 py-6">
|
|
<p className="text-sm text-muted-foreground">Loading…</p>
|
|
</main>
|
|
);
|
|
}
|
|
|
|
const nameFor = (senderId: string | null | undefined) =>
|
|
senderName(senderId, meta?.participants ?? [], user.id);
|
|
// Groups need the actual sender, not the conversation's `peer` — `peer` is
|
|
// only set on DMs, so a group has no single counterpart to read from.
|
|
const senderFor = (senderId: string | null | undefined) =>
|
|
senderPeer(senderId, meta?.participants ?? []);
|
|
const title = meta ? conversationTitle(meta) : "Chat";
|
|
const muted = meta ? isMuted(meta) : false;
|
|
|
|
return (
|
|
<main
|
|
className={cn(
|
|
// Match the inbox and profile widths — a thread stretched across a
|
|
// desktop monitor gives bubbles an unreadable line length, and the
|
|
// eye has to travel between the avatar and the timestamp.
|
|
"mx-auto flex w-full max-w-2xl flex-col",
|
|
// Side rules so the narrower column reads as a panel rather than
|
|
// text floating in space.
|
|
"md:border-x md:border-border",
|
|
// Fill the viewport MINUS the chrome around it: a sticky h-12/sm:h-14
|
|
// header above, and on small screens the h-16 bottom nav the app
|
|
// layout reserves with pb-16. Plain 100dvh ignores both and pushes the
|
|
// composer below the fold.
|
|
// NB: the underscores are load-bearing. Tailwind turns `_` into a
|
|
// space, and calc() requires whitespace around a binary `-` — written
|
|
// without it the whole declaration is invalid and dropped, which
|
|
// collapses this to height:auto.
|
|
// Only while the keyboard is closed; otherwise the inline style below
|
|
// takes over and these would fight it.
|
|
// The full viewport: a thread hides the app's header AND its tab bar,
|
|
// so there is no longer any chrome to subtract.
|
|
!keyboardOpen && "h-[100dvh]",
|
|
)}
|
|
style={
|
|
keyboardOpen && viewport
|
|
? {
|
|
// Pinned to the visible strip above the keyboard. Fixed rather
|
|
// than in-flow because iOS scrolls the layout viewport instead
|
|
// of resizing it, so an in-flow column keeps its old height and
|
|
// hides the composer underneath. left/right 0 with the existing
|
|
// mx-auto keeps the desktop column centred.
|
|
position: "fixed",
|
|
top: viewport.offsetTop,
|
|
left: 0,
|
|
right: 0,
|
|
height: viewport.height,
|
|
// Above the app's fixed bottom nav (z-40) so the composer can
|
|
// never be painted over by it.
|
|
zIndex: 50,
|
|
}
|
|
: undefined
|
|
}
|
|
>
|
|
<header className="flex items-center gap-3 border-b border-border px-4 py-3">
|
|
<Link
|
|
href="/chats"
|
|
aria-label="Back to chats"
|
|
className="-ml-1 rounded-md p-1 text-muted-foreground hover:text-foreground"
|
|
>
|
|
<ArrowLeft className="size-5" />
|
|
</Link>
|
|
|
|
{meta?.kind === "ai" ? (
|
|
<span
|
|
aria-hidden
|
|
className="inline-flex size-9 items-center justify-center rounded-full bg-primary/10 text-primary"
|
|
>
|
|
<KautilyaIcon className="size-4" />
|
|
</span>
|
|
) : (
|
|
<UserAvatar
|
|
src={
|
|
meta?.kind === "group"
|
|
? groupAvatarUrl(id, meta?.avatar_key)
|
|
: meta?.peer?.avatar_url
|
|
}
|
|
name={title}
|
|
className="size-9"
|
|
/>
|
|
)}
|
|
|
|
<Link
|
|
href={`/chats/${id}/profile`}
|
|
className="flex min-w-0 flex-1 flex-col text-left hover:opacity-80"
|
|
aria-label="Chat details"
|
|
>
|
|
<div className="flex items-center gap-2">
|
|
<h1 className="truncate text-sm font-semibold text-foreground">
|
|
{title}
|
|
</h1>
|
|
{muted && (
|
|
<BellOff
|
|
className="size-3.5 text-muted-foreground"
|
|
aria-label="Muted"
|
|
/>
|
|
)}
|
|
</div>
|
|
{meta?.peer?.handle && (
|
|
<p className="truncate text-xs text-muted-foreground">
|
|
@{meta.peer.handle}
|
|
</p>
|
|
)}
|
|
</Link>
|
|
</header>
|
|
|
|
{state === "error" ? (
|
|
<p className="p-4 text-sm text-destructive">
|
|
Could not load this conversation.
|
|
</p>
|
|
) : state === "loading" ? (
|
|
<p className="p-4 text-sm text-muted-foreground">Loading…</p>
|
|
) : (
|
|
<MessageList
|
|
messages={messages}
|
|
selfId={user.id}
|
|
senderFor={senderFor}
|
|
receipts={receipts}
|
|
isGroup={meta?.kind === "group"}
|
|
hasMore={hasMore}
|
|
loadingMore={loadingMore}
|
|
onLoadMore={loadOlder}
|
|
onReply={setReplyTo}
|
|
onMenu={(message, point) => setMenu({ message, point })}
|
|
starredIds={starredIds}
|
|
onRetry={retryMessage}
|
|
nameFor={nameFor}
|
|
typingNames={typingIds.map(nameFor).filter(Boolean)}
|
|
onReact={react}
|
|
onTrailClick={onTrailClick}
|
|
/>
|
|
)}
|
|
|
|
{meta?.kind === "ai" ? (
|
|
<div className="border-t border-border px-4 py-3 text-center text-xs text-muted-foreground">
|
|
Kautilya is coming soon.
|
|
</div>
|
|
) : (
|
|
<ChatComposer
|
|
conversationId={id}
|
|
replyTo={replyTo}
|
|
replyToName={nameFor(replyTo?.sender_id)}
|
|
onCancelReply={() => setReplyTo(null)}
|
|
onSend={sendMessage}
|
|
onTyping={notifyTyping}
|
|
disabled={state !== "ready"}
|
|
/>
|
|
)}
|
|
|
|
{menu && (
|
|
<MessageMenu
|
|
point={menu.point}
|
|
starred={starredIds.has(menu.message.id)}
|
|
myReaction={menu.message.reactions?.find((r) => r.mine)?.emoji}
|
|
onReact={(emoji) => react(menu.message, emoji)}
|
|
onClose={() => setMenu(null)}
|
|
actions={{
|
|
onReply: () => setReplyTo(menu.message),
|
|
onCopy: () => copyMessage(menu.message),
|
|
onStar: () => void toggleStar(menu.message),
|
|
onForward: () => setForwarding(menu.message),
|
|
onDeleteForMe: () => void deleteMessage(menu.message, "me"),
|
|
// Only the sender may erase a message for everyone.
|
|
onDeleteForEveryone:
|
|
menu.message.sender_id === user.id
|
|
? () => void deleteMessage(menu.message, "everyone")
|
|
: undefined,
|
|
// Reporting your own message is meaningless.
|
|
onReport:
|
|
menu.message.sender_id === user.id
|
|
? undefined
|
|
: () => void reportMessage(menu.message),
|
|
}}
|
|
/>
|
|
)}
|
|
|
|
{reactionsFor && (
|
|
<ReactionsDrawer
|
|
conversationId={id}
|
|
messageId={reactionsFor}
|
|
onClose={() => setReactionsFor(null)}
|
|
/>
|
|
)}
|
|
|
|
{forwarding && (
|
|
<ForwardDialog
|
|
message={forwarding}
|
|
onClose={() => setForwarding(null)}
|
|
/>
|
|
)}
|
|
</main>
|
|
);
|
|
}
|