import React, { useEffect, useMemo, useRef, useState } from "react"; import { useFireproof } from "use-fireproof"; import { useVibe, useViewer } from "use-vibes"; import { Badge, Button, Card, Field, Heading, Input, Row, Skeleton, Spacer, Stack, Text } from "@vibes.diy/ui"; import { EXAMPLES, attach, listen, run } from "./lib/hydra.js"; import { rewritePrompt } from "./lib/sketch-prompt.js"; import { callAI } from "call-ai"; export default function App() { const { database, useLiveQuery } = useFireproof("sketchPad"); const { me, can, ready } = useVibe("sketchPad"); const { requestLogin, ViewerTag } = useViewer(); const { docs } = useLiveQuery("type", { key: "sketch" }); const saved = useMemo(() => [...docs].sort((a, b) => (b.createdAt ?? 0) - (a.createdAt ?? 0)), [docs]); const stage = useRef(null); const [code, setCode] = useState(EXAMPLES[0].code); const [live, setLive] = useState(false); const [problem, setProblem] = useState(null); const [ask, setAsk] = useState(""); const [asking, setAsking] = useState(false); const [name, setName] = useState(""); const [hearing, setHearing] = useState(null); // the stop function while the mic is on const alive = useRef(true); // false once the pad unmounts, so a late microphone is closed at once // The engine arrives after first paint; the stage shows a skeleton until the first frame. useEffect(() => { let gone = false; let detach = () => {}; attach(stage.current).then(async (d) => { if (gone) return d?.(); if (!d) return setProblem("the video engine did not load — check the connection and reload the page"); detach = d; const result = await run(code); if (!result.ok) setProblem(result.message); setLive(true); }); return () => { gone = true; detach(); }; }, []); useEffect(() => () => hearing?.(), [hearing]); useEffect(() => () => void (alive.current = false), []); async function show(source = code) { const result = await run(source); setProblem(result.ok ? null : result.message); } function pick(next) { setCode(next); show(next); } async function rewrite() { if (!ask.trim() || asking) return; setAsking(true); try { const reply = await callAI(rewritePrompt(ask, code), { schema: { properties: { name: { type: "string" }, code: { type: "string" } } }, }); const next = JSON.parse(reply); setAsk(""); pick(next.code); } catch { setProblem("the rewrite did not come back — press Rewrite to ask again"); } finally { setAsking(false); } } async function toggleListening() { if (hearing) { hearing(); setHearing(null); return; } try { const stop = await listen(); if (!alive.current) return stop(); // the pad closed while the permission prompt was up setHearing(() => stop); } catch { setProblem("the microphone stayed off, so a.fft reads zero — sketches still play"); } } const draft = { type: "sketch", name: name || "untitled", code, authorHandle: me?.userHandle }; const verdict = can.create(draft); async function keep() { setName(""); const { ok } = await database.put({ ...draft, createdAt: Date.now() }); if (!ok) setName((now) => now || name); } return (

Sketch Pad {live ? "Live" : "Warming up the synth…"}

{!live &&

}

Ctrl+Enter runs the editor

setCode(e.target.value)}
          onKeyDown={(e) => { if ((e.ctrlKey || e.metaKey) && e.key === "Enter") { e.preventDefault(); show(); } }}
          spellCheck={false}
          rows={7}
          aria-label="Hydra sketch"
          className="w-full rounded-md border border-border bg-card p-3 font-mono text-sm text-foreground outline-none"
        />
        {problem && <Text size="sm" tone="down">That sketch needs a tweak: {problem}. The last good one keeps playing.</Text>}

<Row gap={2} wrap>
          {EXAMPLES.map((ex) => (
            <Button key={ex.name} size="sm" variant="quiet" onClick={() => pick(ex.code)}>{ex.name}</Button>
          ))}
        </Row>

<Card variant="tight">
          <Row gap={2} align="top" wrap>
            <Field label="Ask for a change">{(id, d) => <Input id={id} describedBy={d} value={ask} onChange={setAsk} placeholder="slower, and more purple" />}</Field>
            <Button size="sm" onClick={rewrite} disabled={asking}>{asking ? "Rewriting…" : "Rewrite"}</Button>
          </Row>
        </Card>

<Card variant="tight">
          <Stack gap={3}>
            <Heading level={2}>Keep this sketch</Heading>
            {!ready && <div aria-busy="true"><Skeleton variant="row" /></div>}
            {ready && !me && <Row gap={2} align="center" wrap><Text muted>Sign in and your sketches stay with you.</Text><Button size="sm" variant="quiet" onClick={requestLogin}>Sign in to keep sketches</Button></Row>}
            {ready && me && verdict.ok && (
              <Row gap={2} align="top" wrap>
                <Field label="Name">{(id, d) => <Input id={id} describedBy={d} value={name} onChange={setName} placeholder="midnight bloom" />}</Field>
                <Button size="sm" onClick={keep}>Keep</Button>
              </Row>
            )}
            {saved.map((s) => (
              <Row key={s._id} gap={2} align="center" wrap>
                <Button size="sm" variant="quiet" onClick={() => pick(s.code)}>{s.name}</Button>
                {s.authorHandle && <ViewerTag userHandle={s.authorHandle} />}
                <Spacer />
                {can.delete(s).ok && <Button size="sm" variant="quiet" tone="down" onClick={() => database.del(s._id)}>Remove</Button>}
              </Row>
            ))}
          </Stack>
        </Card>

<Text size="sm" muted>
          Video by <a className="underline" href="https://hydra.ojack.xyz" target="_blank" rel="noreferrer">Hydra</a> (AGPL), fetched from its own address when the page opens.
        </Text>
      </Stack>
    </main>
  );
}
</article></body></html>