feat: Updated streamChat() API, ChatWidget, and ChatPage to thread conv…
- "frontend/src/api/chat.ts" - "frontend/src/components/ChatWidget.tsx" - "frontend/src/pages/ChatPage.tsx" - "frontend/src/pages/ChatPage.module.css" GSD-Task: S04/T02
This commit is contained in:
jlightner
parent
29e60bbc99
commit
6a6305e8d1
4 changed files with 332 additions and 127 deletions
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@ -21,10 +21,15 @@ export interface ChatSource {
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section_heading: string;
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}
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export interface ChatDoneMeta {
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cascade_tier: string;
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conversation_id: string;
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}
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export interface ChatCallbacks {
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onSources: (sources: ChatSource[]) => void;
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onToken: (text: string) => void;
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onDone: (meta: { cascade_tier: string }) => void;
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onDone: (meta: ChatDoneMeta) => void;
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onError: (message: string) => void;
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}
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@ -36,6 +41,7 @@ export function streamChat(
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query: string,
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callbacks: ChatCallbacks,
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creator?: string,
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conversationId?: string,
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): AbortController {
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const controller = new AbortController();
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@ -57,7 +63,11 @@ export function streamChat(
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fetch(`${BASE}/chat`, {
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method: "POST",
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headers,
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body: JSON.stringify({ query, creator: creator ?? null }),
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body: JSON.stringify({
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query,
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creator: creator ?? null,
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conversation_id: conversationId ?? null,
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}),
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signal: controller.signal,
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})
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.then(async (res) => {
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@ -116,7 +126,7 @@ export function streamChat(
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callbacks.onToken(JSON.parse(rawData) as string);
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break;
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case "done":
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callbacks.onDone(JSON.parse(rawData) as { cascade_tier: string });
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callbacks.onDone(JSON.parse(rawData) as ChatDoneMeta);
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break;
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case "error": {
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const err = JSON.parse(rawData) as { message?: string };
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@ -120,6 +120,7 @@ export default function ChatWidget({ creatorName, techniques }: ChatWidgetProps)
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const [messages, setMessages] = useState<Message[]>([]);
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const [input, setInput] = useState("");
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const [streaming, setStreaming] = useState(false);
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const [conversationId, setConversationId] = useState<string | undefined>(undefined);
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const abortRef = useRef<AbortController | null>(null);
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const messagesEndRef = useRef<HTMLDivElement>(null);
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@ -151,15 +152,24 @@ export default function ChatWidget({ creatorName, techniques }: ChatWidgetProps)
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};
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}, []);
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const handleClose = useCallback(() => {
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abortRef.current?.abort();
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setOpen(false);
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setMessages([]);
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setInput("");
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setStreaming(false);
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setConversationId(undefined);
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}, []);
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// Escape key closes panel
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useEffect(() => {
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if (!open) return;
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const handleKey = (e: KeyboardEvent) => {
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if (e.key === "Escape") setOpen(false);
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if (e.key === "Escape") handleClose();
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};
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document.addEventListener("keydown", handleKey);
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return () => document.removeEventListener("keydown", handleKey);
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}, [open]);
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}, [open, handleClose]);
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const sendMessage = useCallback(
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(text: string) => {
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@ -168,6 +178,10 @@ export default function ChatWidget({ creatorName, techniques }: ChatWidgetProps)
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abortRef.current?.abort();
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// Generate conversation_id on first message
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const cid = conversationId ?? crypto.randomUUID();
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if (!conversationId) setConversationId(cid);
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const userMsg: Message = { role: "user", text: q, sources: [], done: true };
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const assistantMsg: Message = { role: "assistant", text: "", sources: [], done: false };
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const newMessages = [...messages, userMsg, assistantMsg];
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@ -192,7 +206,8 @@ export default function ChatWidget({ creatorName, techniques }: ChatWidgetProps)
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),
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);
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},
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onDone: () => {
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onDone: (meta) => {
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setConversationId(meta.conversation_id);
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setMessages((prev) =>
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prev.map((m, i) => (i === assistantIndex ? { ...m, done: true } : m)),
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);
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@ -208,9 +223,10 @@ export default function ChatWidget({ creatorName, techniques }: ChatWidgetProps)
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},
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},
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creatorName,
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cid,
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);
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},
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[messages, streaming, creatorName],
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[messages, streaming, creatorName, conversationId],
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);
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const handleSubmit = (e: React.FormEvent) => {
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@ -249,7 +265,7 @@ export default function ChatWidget({ creatorName, techniques }: ChatWidgetProps)
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</div>
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<button
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className={styles.closeBtn}
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onClick={() => setOpen(false)}
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onClick={handleClose}
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aria-label="Close chat"
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>
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✕
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@ -1,4 +1,4 @@
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/* ChatPage — dark theme matching existing Chrysopedia styles */
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/* ChatPage — dark theme, multi-message conversation layout */
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.container {
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max-width: 800px;
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@ -9,11 +9,39 @@
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min-height: 60vh;
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}
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/* ── Header ───────────────────────────────────────────────── */
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.headerRow {
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display: flex;
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align-items: center;
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justify-content: space-between;
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gap: 1rem;
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margin-bottom: 1.5rem;
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}
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.title {
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font-size: 1.5rem;
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font-weight: 600;
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color: var(--color-text-primary);
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margin: 0 0 1.5rem;
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margin: 0;
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}
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.newConversationBtn {
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padding: 0.375rem 0.75rem;
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background: transparent;
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color: var(--color-accent);
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border: 1px solid var(--color-accent);
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border-radius: 6px;
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font-size: 0.8125rem;
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font-weight: 500;
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cursor: pointer;
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transition: background 0.15s, color 0.15s;
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white-space: nowrap;
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}
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.newConversationBtn:hover {
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background: var(--color-accent);
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color: #0f0f14;
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}
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/* ── Input area ───────────────────────────────────────────── */
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@ -21,7 +49,11 @@
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.inputRow {
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display: flex;
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gap: 0.5rem;
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margin-bottom: 1.5rem;
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margin-top: auto;
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padding-top: 1rem;
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position: sticky;
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bottom: 0;
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background: var(--color-bg-page);
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}
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.input {
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@ -68,17 +100,40 @@
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cursor: not-allowed;
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}
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/* ── Response area ────────────────────────────────────────── */
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/* ── Messages area ────────────────────────────────────────── */
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.responseArea {
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.messagesArea {
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flex: 1;
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display: flex;
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flex-direction: column;
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gap: 1rem;
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overflow-y: auto;
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padding-bottom: 0.5rem;
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}
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.userMsg {
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align-self: flex-end;
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max-width: 80%;
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background: var(--color-accent);
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color: #0f0f14;
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padding: 0.625rem 0.875rem;
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border-radius: 12px 12px 2px 12px;
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font-size: 0.9375rem;
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line-height: 1.5;
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word-break: break-word;
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}
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.assistantMsg {
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align-self: flex-start;
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max-width: 90%;
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background: var(--color-bg-surface);
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border: 1px solid var(--color-border);
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border-radius: 12px;
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padding: 1.5rem;
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margin-bottom: 1.5rem;
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min-height: 100px;
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border-radius: 12px 12px 12px 2px;
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padding: 1rem;
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}
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/* ── Response text ────────────────────────────────────────── */
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.responseText {
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color: var(--color-text-primary);
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font-size: 0.9375rem;
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@ -133,13 +188,14 @@
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border-radius: 8px;
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padding: 0.75rem;
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font-size: 0.875rem;
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margin-bottom: 1rem;
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}
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/* ── Citations / Sources ──────────────────────────────────── */
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.sourcesSection {
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margin-top: 0.5rem;
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margin-top: 0.75rem;
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padding-top: 0.75rem;
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border-top: 1px solid var(--color-border);
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}
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.sourcesTitle {
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@ -148,7 +204,7 @@
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color: var(--color-text-secondary);
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text-transform: uppercase;
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letter-spacing: 0.05em;
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margin: 0 0 0.75rem;
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margin: 0 0 0.5rem;
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}
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.sourceList {
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@ -157,27 +213,27 @@
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padding: 0;
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display: flex;
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flex-direction: column;
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gap: 0.5rem;
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gap: 0.375rem;
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}
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.sourceItem {
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display: flex;
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gap: 0.625rem;
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align-items: baseline;
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font-size: 0.875rem;
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font-size: 0.8125rem;
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}
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.sourceNumber {
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flex-shrink: 0;
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width: 1.5rem;
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height: 1.5rem;
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width: 1.25rem;
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height: 1.25rem;
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display: flex;
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align-items: center;
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justify-content: center;
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background: var(--color-accent);
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color: #0f0f14;
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border-radius: 4px;
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font-size: 0.75rem;
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font-size: 0.6875rem;
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font-weight: 700;
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}
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@ -193,7 +249,7 @@
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.sourceMeta {
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color: var(--color-text-secondary);
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font-size: 0.8125rem;
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font-size: 0.75rem;
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}
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/* ── Citation superscript links in text ───────────────────── */
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@ -222,6 +278,7 @@
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flex-direction: column;
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align-items: center;
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justify-content: center;
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flex: 1;
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min-height: 200px;
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color: var(--color-text-secondary);
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font-size: 0.9375rem;
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@ -241,6 +298,12 @@
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padding: 1rem 0.75rem;
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}
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.headerRow {
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flex-direction: column;
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align-items: flex-start;
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gap: 0.5rem;
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}
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.inputRow {
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flex-direction: column;
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}
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@ -248,4 +311,8 @@
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.submitBtn {
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width: 100%;
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}
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.userMsg {
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max-width: 90%;
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}
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}
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@ -1,9 +1,10 @@
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/**
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* ChatPage — ask a question, receive a streamed encyclopedic response with citations.
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* ChatPage — multi-turn chat with streamed encyclopedic responses and citations.
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*
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* Uses SSE streaming via api/chat.ts to display tokens in real-time.
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* Citation markers [N] in the streamed text become superscript links to
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* the source list rendered below the response.
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* the source list rendered below the response. Conversations are threaded
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* via conversation_id backed by Redis history on the server.
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*/
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import React, { useState, useRef, useCallback, useEffect } from "react";
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@ -15,9 +16,16 @@ import styles from "./ChatPage.module.css";
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// Matches [1], [2,3], [1,2,3] etc. — same regex as utils/citations.tsx
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const CITATION_RE = /\[(\d+(?:,\s*\d+)*)\]/g;
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interface Message {
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role: "user" | "assistant";
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text: string;
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sources: ChatSource[];
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done: boolean;
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error?: string;
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}
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/**
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* Parse text containing [N] markers into React nodes with citation links.
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* Links scroll to the source list item and reference ChatSource metadata.
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*/
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function parseChatCitations(
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text: string,
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@ -80,16 +88,16 @@ function parseChatCitations(
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export default function ChatPage() {
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useDocumentTitle("Chat — Chrysopedia");
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const [query, setQuery] = useState("");
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const [sources, setSources] = useState<ChatSource[]>([]);
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const [responseText, setResponseText] = useState("");
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const [messages, setMessages] = useState<Message[]>([]);
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const [input, setInput] = useState("");
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const [streaming, setStreaming] = useState(false);
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const [loading, setLoading] = useState(false);
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const [error, setError] = useState<string | null>(null);
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const [done, setDone] = useState(false);
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const [conversationId, setConversationId] = useState<string | undefined>(
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undefined,
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);
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const abortRef = useRef<AbortController | null>(null);
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const inputRef = useRef<HTMLInputElement>(null);
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const messagesEndRef = useRef<HTMLDivElement>(null);
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// Cleanup on unmount
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useEffect(() => {
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@ -98,104 +106,177 @@ export default function ChatPage() {
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};
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}, []);
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// Scroll to bottom when messages update
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useEffect(() => {
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messagesEndRef.current?.scrollIntoView({ behavior: "smooth" });
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}, [messages]);
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const sendMessage = useCallback(
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(text: string) => {
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const q = text.trim();
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if (!q || streaming) return;
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abortRef.current?.abort();
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// Generate conversation_id on first message
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const cid = conversationId ?? crypto.randomUUID();
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if (!conversationId) setConversationId(cid);
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const userMsg: Message = {
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role: "user",
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text: q,
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sources: [],
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done: true,
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};
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const assistantMsg: Message = {
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role: "assistant",
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text: "",
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sources: [],
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done: false,
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};
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const newMessages = [...messages, userMsg, assistantMsg];
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setMessages(newMessages);
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setInput("");
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setStreaming(true);
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const assistantIndex = newMessages.length - 1;
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abortRef.current = streamChat(
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q,
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{
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onSources: (sources) => {
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setMessages((prev) =>
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prev.map((m, i) =>
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i === assistantIndex ? { ...m, sources } : m,
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),
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);
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},
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onToken: (token) => {
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setMessages((prev) =>
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prev.map((m, i) =>
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i === assistantIndex ? { ...m, text: m.text + token } : m,
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),
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);
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},
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onDone: (meta) => {
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setConversationId(meta.conversation_id);
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setMessages((prev) =>
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prev.map((m, i) =>
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i === assistantIndex ? { ...m, done: true } : m,
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),
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);
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setStreaming(false);
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},
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onError: (msg) => {
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setMessages((prev) =>
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prev.map((m, i) =>
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i === assistantIndex ? { ...m, done: true, error: msg } : m,
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),
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);
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setStreaming(false);
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},
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},
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undefined, // no creator scope on the main chat page
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cid,
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);
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},
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[messages, streaming, conversationId],
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);
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const handleSubmit = useCallback(
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(e: React.FormEvent) => {
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e.preventDefault();
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const q = query.trim();
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if (!q || streaming) return;
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// Reset state
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abortRef.current?.abort();
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setSources([]);
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setResponseText("");
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setError(null);
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setDone(false);
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setLoading(true);
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setStreaming(true);
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abortRef.current = streamChat(q, {
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onSources: (s) => {
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setSources(s);
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setLoading(false);
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sendMessage(input);
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},
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onToken: (text) => {
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setResponseText((prev) => prev + text);
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},
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onDone: () => {
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setStreaming(false);
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setDone(true);
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},
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onError: (msg) => {
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setError(msg);
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setStreaming(false);
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setLoading(false);
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},
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});
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},
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[query, streaming],
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[input, sendMessage],
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);
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const hasResponse = responseText.length > 0 || sources.length > 0;
|
||||
const handleNewConversation = useCallback(() => {
|
||||
abortRef.current?.abort();
|
||||
setMessages([]);
|
||||
setInput("");
|
||||
setStreaming(false);
|
||||
setConversationId(undefined);
|
||||
inputRef.current?.focus();
|
||||
}, []);
|
||||
|
||||
const hasMessages = messages.length > 0;
|
||||
|
||||
return (
|
||||
<div className={styles.container}>
|
||||
<div className={styles.headerRow}>
|
||||
<h1 className={styles.title}>Ask Chrysopedia</h1>
|
||||
|
||||
<form onSubmit={handleSubmit} className={styles.inputRow}>
|
||||
<input
|
||||
ref={inputRef}
|
||||
type="text"
|
||||
className={styles.input}
|
||||
value={query}
|
||||
onChange={(e) => setQuery(e.target.value)}
|
||||
placeholder="Ask about music production techniques…"
|
||||
disabled={streaming}
|
||||
autoFocus
|
||||
/>
|
||||
{hasMessages && (
|
||||
<button
|
||||
type="submit"
|
||||
className={styles.submitBtn}
|
||||
disabled={!query.trim() || streaming}
|
||||
className={styles.newConversationBtn}
|
||||
onClick={handleNewConversation}
|
||||
title="Start a new conversation"
|
||||
>
|
||||
{streaming ? "Streaming…" : "Ask"}
|
||||
+ New conversation
|
||||
</button>
|
||||
</form>
|
||||
)}
|
||||
</div>
|
||||
|
||||
{error && <div className={styles.error}>{error}</div>}
|
||||
|
||||
{loading && (
|
||||
<div className={styles.loading}>
|
||||
<div className={styles.spinner} />
|
||||
Searching for sources…
|
||||
{!hasMessages && !streaming && (
|
||||
<div className={styles.placeholder}>
|
||||
<span className={styles.placeholderIcon}>💬</span>
|
||||
<p>Ask any question about music production techniques.</p>
|
||||
<p>Responses include citations linking to source pages and videos.</p>
|
||||
</div>
|
||||
)}
|
||||
|
||||
{hasResponse && (
|
||||
<div className={styles.responseArea}>
|
||||
<div className={styles.responseText}>
|
||||
{parseChatCitations(responseText, sources)}
|
||||
{streaming && <span className={styles.cursor} />}
|
||||
{hasMessages && (
|
||||
<div className={styles.messagesArea}>
|
||||
{messages.map((msg, i) => {
|
||||
if (msg.role === "user") {
|
||||
return (
|
||||
<div key={i} className={styles.userMsg}>
|
||||
{msg.text}
|
||||
</div>
|
||||
);
|
||||
}
|
||||
|
||||
{sources.length > 0 && (done || !streaming) && (
|
||||
// Assistant message
|
||||
return (
|
||||
<div key={i} className={styles.assistantMsg}>
|
||||
{msg.error ? (
|
||||
<div className={styles.error}>{msg.error}</div>
|
||||
) : (
|
||||
<>
|
||||
<div className={styles.responseText}>
|
||||
{parseChatCitations(msg.text, msg.sources)}
|
||||
{!msg.done && <span className={styles.cursor} />}
|
||||
</div>
|
||||
{msg.done && msg.sources.length > 0 && (
|
||||
<div className={styles.sourcesSection}>
|
||||
<h2 className={styles.sourcesTitle}>Sources</h2>
|
||||
<h3 className={styles.sourcesTitle}>Sources</h3>
|
||||
<ol className={styles.sourceList}>
|
||||
{sources.map((src) => {
|
||||
{msg.sources.map((src) => {
|
||||
const href = src.section_anchor
|
||||
? `/techniques/${src.slug}#${src.section_anchor}`
|
||||
: `/techniques/${src.slug}`;
|
||||
return (
|
||||
<li key={src.number} className={styles.sourceItem}>
|
||||
<span className={styles.sourceNumber}>{src.number}</span>
|
||||
<li
|
||||
key={src.number}
|
||||
className={styles.sourceItem}
|
||||
>
|
||||
<span className={styles.sourceNumber}>
|
||||
{src.number}
|
||||
</span>
|
||||
<div>
|
||||
<Link to={href} className={styles.sourceLink}>
|
||||
<Link
|
||||
to={href}
|
||||
className={styles.sourceLink}
|
||||
>
|
||||
{src.title}
|
||||
{src.section_heading ? ` — ${src.section_heading}` : ""}
|
||||
{src.section_heading
|
||||
? ` — ${src.section_heading}`
|
||||
: ""}
|
||||
</Link>
|
||||
{src.creator_name && (
|
||||
<span className={styles.sourceMeta}>
|
||||
{" "}· {src.creator_name}
|
||||
{" "}
|
||||
· {src.creator_name}
|
||||
</span>
|
||||
)}
|
||||
</div>
|
||||
|
|
@ -205,16 +286,47 @@ export default function ChatPage() {
|
|||
</ol>
|
||||
</div>
|
||||
)}
|
||||
</div>
|
||||
)}
|
||||
|
||||
{!hasResponse && !loading && !error && (
|
||||
<div className={styles.placeholder}>
|
||||
<span className={styles.placeholderIcon}>💬</span>
|
||||
<p>Ask any question about music production techniques.</p>
|
||||
<p>Responses include citations linking to source pages and videos.</p>
|
||||
</div>
|
||||
</>
|
||||
)}
|
||||
</div>
|
||||
);
|
||||
})}
|
||||
|
||||
{/* Typing indicator — before first token arrives */}
|
||||
{streaming &&
|
||||
messages.length > 0 &&
|
||||
messages[messages.length - 1]?.role === "assistant" &&
|
||||
messages[messages.length - 1]?.text === "" &&
|
||||
!messages[messages.length - 1]?.error && (
|
||||
<div className={styles.loading}>
|
||||
<div className={styles.spinner} />
|
||||
Thinking…
|
||||
</div>
|
||||
)}
|
||||
|
||||
<div ref={messagesEndRef} />
|
||||
</div>
|
||||
)}
|
||||
|
||||
<form onSubmit={handleSubmit} className={styles.inputRow}>
|
||||
<input
|
||||
ref={inputRef}
|
||||
type="text"
|
||||
className={styles.input}
|
||||
value={input}
|
||||
onChange={(e) => setInput(e.target.value)}
|
||||
placeholder="Ask about music production techniques…"
|
||||
disabled={streaming}
|
||||
autoFocus
|
||||
/>
|
||||
<button
|
||||
type="submit"
|
||||
className={styles.submitBtn}
|
||||
disabled={!input.trim() || streaming}
|
||||
>
|
||||
{streaming ? "Streaming…" : "Send"}
|
||||
</button>
|
||||
</form>
|
||||
</div>
|
||||
);
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue