/**
 * dsh-voice-client — browser bundle (hand-written in the DSH __ModuleLoader__ format).
 *
 * Voice interaction for the DeepSeek Harness Web GUI, pure browser-native:
 *   - ASR: Web Speech API (SpeechRecognition) → fills the composer draft (hold-to-talk or toggle)
 *   - TTS: Web Speech API (speechSynthesis) → reads assistant replies aloud (manual + auto)
 *
 * Registered slots:
 *   - conversation.input.right   → mic button (composer tool row)
 *   - conversation.chat.turnTail → per-turn read-aloud button (+ auto-read on turn close)
 *   - conversation.composer.dock → voice status line (listening / speaking / errors)
 *   - settings.section           → voice settings panel (language, mode, toggles, rate)
 *
 * No build step: this file IS the bundle. Edit it and the HMR poll picks up the
 * content change (rev change) automatically; a fresh page load picks up the graph row.
 */
window.__ModuleLoader__.load({
  id: "dsh-voice-client",
  factory: (require) => {
    var module = { exports: {} };
    var exports = module.exports;
    Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });

    let react = require("react");
    let jsxRuntime = require("react/jsx-runtime");
    const { jsx, jsxs, Fragment } = jsxRuntime;
    const { useState, useEffect, useRef, useMemo, useSyncExternalStore } = react;

    // ─────────────────────────────── settings ───────────────────────────────
    const LS_PREFIX = "dshVoice.";
    const DEFAULT_SETTINGS = Object.freeze({
      lang: "zh-CN",       // 'zh-CN' | 'en-US' | any BCP-47 the engine supports
      mode: "toggle",      // 'toggle' (click start/stop) | 'hold' (push-to-talk)
      asrEngine: "server", // 'server' (local, offline) | 'browser' (Web Speech API) | 'auto'
      autoSubmit: false,   // send the message right after recognition
      autoRead: false,     // read assistant replies automatically
      ttsEngine: "edge",  // 'edge' (natural, online) | 'piper' (offline) | 'browser' (system voice)
      ttsVoice: "zh-CN-YunxiNeural", // edge-tts voice (warm male — Jarvis-like)
      rate: 1.0,           // TTS rate
      skipCode: true       // skip fenced code blocks when reading
    });

    function loadSettings() {
      const out = { ...DEFAULT_SETTINGS };
      try {
        for (const key of Object.keys(DEFAULT_SETTINGS)) {
          const raw = localStorage.getItem(LS_PREFIX + key);
          if (raw === null) continue;
          const def = DEFAULT_SETTINGS[key];
          if (typeof def === "boolean") out[key] = raw === "true";
          else if (typeof def === "number") {
            const n = Number(raw);
            if (Number.isFinite(n)) out[key] = n;
          } else out[key] = raw;
        }
      } catch { /* storage unavailable — keep defaults */ }
      return out;
    }
    function saveSettings(patch) {
      try {
        for (const [k, v] of Object.entries(patch)) localStorage.setItem(LS_PREFIX + k, String(v));
      } catch { /* storage unavailable */ }
      return { ...loadSettings(), ...patch };
    }

    // ─────────────────────────── shared voice state ──────────────────────────
    let voiceState = { recording: false, interim: "", speaking: false, speakingKey: null, error: null };
    const voiceListeners = new Set();
    function setVoice(patch) {
      voiceState = { ...voiceState, ...patch };
      for (const fn of voiceListeners) fn();
    }
    function subscribeVoice(fn) {
      voiceListeners.add(fn);
      return () => { voiceListeners.delete(fn); };
    }
    function getVoice() { return voiceState; }
    function useVoice() { return useSyncExternalStore(subscribeVoice, getVoice); }

    // ───────────────────────────────── TTS ───────────────────────────────────
    function ttsSupported() {
      return typeof window !== "undefined" && "speechSynthesis" in window;
    }

    let speakGeneration = 0;
    let resumeTimer = null;
    let currentAudio = null;
    function clearResumeTimer() {
      if (resumeTimer !== null) { clearInterval(resumeTimer); resumeTimer = null; }
    }

    /** Stop any in-flight playback WITHOUT invalidating the generation counter. */
    function cancelPlayback() {
      clearResumeTimer();
      if (ttsSupported()) { try { window.speechSynthesis.cancel(); } catch { /* noop */ } }
      if (currentAudio) {
        try { currentAudio.pause(); currentAudio.currentTime = 0; } catch { /* noop */ }
        try { currentAudio.removeAttribute("src"); currentAudio.load(); } catch { /* noop */ }
      }
    }

    function ttsStop() {
      speakGeneration++;
      cancelPlayback();
      setVoice({ speaking: false, speakingKey: null });
    }

    /** Sentence-aware chunking. Chrome's speechSynthesis stalls on very long utterances. */
    function splitChunks(text) {
      const chunks = [];
      let current = "";
      for (const ch of text) {
        current += ch;
        if ("。！？；.!?;\n".includes(ch) || current.length >= 120) {
          const trimmed = current.trim();
          if (trimmed) chunks.push(trimmed);
          current = "";
        }
      }
      const rest = current.trim();
      if (rest) chunks.push(rest);
      return chunks;
    }

    /** Strip code fences + markdown syntax so TTS reads clean prose (not "星号星号"). */
    function cleanMarkdown(text) {
      return text
        .replace(/```[\s\S]*?```/g, " ")          // fenced code blocks
        .replace(/`[^`\n]+`/g, " ")               // inline code
        .replace(/!\[[^\]]*\]\([^)]*\)/g, " ")    // images
        .replace(/\[([^\]]*)\]\([^)]*\)/g, "$1")  // links → text
        .replace(/^#{1,6}\s*/gm, "")              // headings
        .replace(/^\s*[-*+]\s+/gm, "")            // bullet lists
        .replace(/^\s*\d+[.)]\s+/gm, "")          // numbered lists
        .replace(/\*\*([^*\n]+)\*\*/g, "$1")      // bold
        .replace(/\*([^*\n]+)\*/g, "$1")          // italic
        .replace(/__([^_\n]+)__/g, "$1")          // bold (underscore)
        .replace(/_([^_\n]+)_/g, "$1")            // italic (underscore)
        .replace(/<[^>]+>/g, " ")                 // html tags
        .replace(/\|/g, "，")                      // table pipes → pause
        .replace(/-{3,}/g, " ")                   // horizontal rules
        .replace(/[ \t]+/g, " ")                  // collapse spaces
        .replace(/\s*\n\s*\n+/g, "\n")            // collapse blank lines
        .trim();
    }

    /**
     * Speak text aloud. `key` identifies the message so per-message stop works
     * (the same key is stored in voiceState.speakingKey while speaking).
     */
    function speakText(text, key) {
      if (!text || !text.trim()) return;
      const engine = loadSettings().ttsEngine;
      if (engine === "browser" || !ttsSupported()) return speakBrowser(text, key);
      return speakServer(text, key);
    }

    /** Browser engine: chunked speechSynthesis (system voices). */
    function speakBrowser(text, key) {
      if (!ttsSupported()) return;
      const gen = ++speakGeneration;
      clearResumeTimer();
      const synth = window.speechSynthesis;
      try { synth.cancel(); } catch { /* noop */ }
      const chunks = splitChunks(text);
      setVoice({ speaking: true, speakingKey: key ?? null, error: null });
      // Heartbeat: Chrome can stall synthesis after ~15s of continuous audio.
      resumeTimer = setInterval(() => { try { synth.resume(); } catch { /* noop */ } }, 10000);
      let index = 0;
      const next = () => {
        if (gen !== speakGeneration) return; // interrupted / stopped
        if (index >= chunks.length) {
          if (gen === speakGeneration) {
            clearResumeTimer();
            setVoice({ speaking: false, speakingKey: null });
          }
          return;
        }
        const settings = loadSettings();
        const u = new SpeechSynthesisUtterance(chunks[index++]);
        u.lang = settings.lang;
        u.rate = settings.rate;
        u.onend = next;
        u.onerror = (ev) => {
          if (gen !== speakGeneration) return;
          if (ev.error === "interrupted" || ev.error === "canceled") return;
          clearResumeTimer();
          setVoice({ speaking: false, speakingKey: null });
        };
        try { synth.speak(u); } catch { setVoice({ speaking: false, speakingKey: null }); }
      };
      next();
    }

    /** Server engine: edge-tts / piper via /api/voice/tts, played as audio. */
    function speakServer(text, key) {
      const gen = ++speakGeneration;
      cancelPlayback(); // stop current audio without re-incrementing the generation
      setVoice({ speaking: true, speakingKey: key ?? null, error: null });
      const settings = loadSettings();
      fetch("/api/voice/tts", {
        method: "POST",
        headers: { "content-type": "application/json" },
        body: JSON.stringify({ text, engine: settings.ttsEngine, voice: settings.ttsVoice, rate: settings.rate })
      })
        .then((res) => {
          if (!res.ok) throw new Error("HTTP " + res.status);
          return res.blob();
        })
        .then((blob) => {
          if (gen !== speakGeneration) return;
          const url = URL.createObjectURL(blob);
          // Reuse a DOM-attached audio element for reliable autoplay.
          if (currentAudio === null) {
            currentAudio = document.createElement("audio");
            currentAudio.style.display = "none";
            document.body.appendChild(currentAudio);
          }
          const audio = currentAudio;
          audio.onended = () => {
            if (gen === speakGeneration) setVoice({ speaking: false, speakingKey: null });
            URL.revokeObjectURL(url);
            maybeResume();
          };
          audio.onerror = () => {
            if (gen === speakGeneration) setVoice({ speaking: false, speakingKey: null, error: "语音播放失败" });
            URL.revokeObjectURL(url);
          };
          audio.src = url;
          audio.play().catch((err) => {
            if (gen === speakGeneration) setVoice({ speaking: false, speakingKey: null, error: "播放被阻止: " + String(err && err.name || err) });
          });
        })
        .catch((err) => {
          if (gen === speakGeneration) setVoice({ speaking: false, speakingKey: null, error: "本地语音服务不可用: " + String(err && err.message || err) });
        });
    }

    // ───────────────────────────────── ASR ───────────────────────────────────
    function asrSupported() {
      return typeof window !== "undefined" && Boolean(window.SpeechRecognition || window.webkitSpeechRecognition);
    }

    let recognizer = null;   // browser engine instance (SpeechRecognition)
    let activeEngine = null; // 'browser' | 'server'
    let listening = false;   // whether the mic should stay on (held / toggled-on)
    let finalTranscript = "";
    let baseDraft = "";      // draft text before recording started
    let lastWritten = "";    // what updateDraft last wrote (to detect user edits)
    let liveWriting = true;  // still allowed to overwrite the draft live
    let commitOnEnd = null;  // { readDraft, setDraft, submit } resolved when recording ends
    let browserNetworkFailed = false; // auto-mode memory: browser ASR is unusable here
    let lastMicCtx = null;   // latest mic context (set by MicButton) for auto-resume
    let loopActive = false;  // hands-free loop running (自由交流 mode)

    /**
     * Write the recognized text LIVE into the composer draft — but stop the
     * moment the user edits the draft themselves, so their typing is never
     * clobbered by the next recognition update.
     */
    function updateDraft(text) {
      if (!commitOnEnd || !commitOnEnd.setDraft) return;
      if (liveWriting && commitOnEnd.readDraft) {
        const current = commitOnEnd.readDraft();
        if (current !== lastWritten) liveWriting = false; // user took over editing
      }
      if (!liveWriting) return;
      const prefix = baseDraft ? baseDraft + " " : "";
      const next = prefix + text;
      lastWritten = next;
      commitOnEnd.setDraft(next);
    }

    /** End-of-recording: reconcile the draft and optionally auto-submit. */
    function commitFinal() {
      const ctxAtEnd = commitOnEnd;
      commitOnEnd = null;
      const text = finalTranscript.trim();
      finalTranscript = "";
      if (ctxAtEnd === null) return;
      // If the user edited mid-recording, append the final transcript to their draft.
      if (!liveWriting && text && ctxAtEnd.readDraft && ctxAtEnd.setDraft) {
        const cur = ctxAtEnd.readDraft().trimEnd();
        ctxAtEnd.setDraft(cur ? cur + " " + text : text);
      }
      if (text && loadSettings().autoSubmit && ctxAtEnd.submit) {
        try { ctxAtEnd.submit(); } catch { /* submission refused (busy) */ }
      }
    }

    /** Auto-resume the mic loop after the reply finishes reading (自由交流 mode). */
    function maybeResume() {
      const s = loadSettings();
      if (!s.autoSubmit || !s.autoRead) return; // only in 自由交流 (hands-free) mode
      if (!loopActive) return;
      if (listening) return;
      if (lastMicCtx === null) return;
      setTimeout(() => {
        if (!listening && loopActive && loadSettings().autoSubmit) startListening(lastMicCtx);
      }, 700);
    }

    /** Manual stop: end the hands-free loop too. */
    function stopLoop() {
      loopActive = false;
      stopListening();
    }

    /**
     * Precise mic preflight via getUserMedia — the call that triggers the
     * OS/browser permission prompt and reports WHICH layer denied access.
     */
    async function preflightMic() {
      if (typeof navigator === "undefined" || !navigator.mediaDevices || typeof navigator.mediaDevices.getUserMedia !== "function") {
        return { ok: false, reason: "unsupported" };
      }
      try {
        const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
        for (const track of stream.getTracks()) track.stop();
        return { ok: true };
      } catch (err) {
        const name = (err && err.name) || "";
        if (name === "NotAllowedError" || name === "SecurityError") return { ok: false, reason: "permission" };
        if (name === "NotFoundError" || name === "OverconstrainedError") return { ok: false, reason: "device" };
        return { ok: false, reason: "other", detail: String((err && err.message) || err) };
      }
    }

    function micErrorMessage(res) {
      return res.reason === "permission"
        ? "麦克风权限被拒绝。请检查两步：① macOS「系统设置 → 隐私与安全性 → 麦克风」勾选允许 Chrome；② 地址栏左侧锁形图标 → 网站设置 → 麦克风选「允许」。改完后刷新页面再试。"
        : res.reason === "device"
          ? "未检测到可用的麦克风设备，请在 macOS「系统设置 → 声音 → 输入」确认有输入设备。"
          : res.reason === "unsupported"
            ? "此环境不支持麦克风访问（getUserMedia 不可用）。"
            : "无法访问麦克风: " + (res.detail || res.reason);
    }

    /** Entry point: pick the engine from settings, then start it. */
    function startListening(ctx) {
      if (listening) return;
      ttsStop(); // speaking while the user talks would be confusing — interrupt
      commitOnEnd = ctx ?? null;
      finalTranscript = "";
      baseDraft = (ctx && ctx.readDraft ? ctx.readDraft() : "").trimEnd();
      lastWritten = baseDraft;
      liveWriting = true;
      setVoice({ recording: true, interim: "", error: null });
      const engine = loadSettings().asrEngine;
      if (engine === "browser") return startBrowserEngine(ctx);
      if (engine === "server") return startServerEngine(ctx);
      // 'auto'
      if (browserNetworkFailed) return startServerEngine(ctx);
      startBrowserEngine(ctx);
    }

    // ── browser engine (Web Speech API — needs Google's cloud in Chrome) ────
    function startBrowserEngine(ctx) {
      if (!asrSupported()) {
        listening = false;
        commitOnEnd = null;
        setVoice({ recording: false, error: "当前浏览器不支持语音识别（SpeechRecognition）。请在设置里改用「本地服务」识别引擎。" });
        return;
      }
      preflightMic().then((res) => {
        if (!res.ok) {
          listening = false;
          commitOnEnd = null;
          setVoice({ recording: false, interim: "", error: micErrorMessage(res) });
          return;
        }
        startRecognizer(ctx);
      });
    }

    function startRecognizer(ctx) {
      const SR = window.SpeechRecognition || window.webkitSpeechRecognition;
      const settings = loadSettings();
      const rec = new SR();
      rec.lang = settings.lang;
      rec.continuous = true;
      rec.interimResults = true;
      rec.maxAlternatives = 1;

      rec.onresult = (ev) => {
        let interim = "";
        for (let k = ev.resultIndex; k < ev.results.length; k++) {
          const result = ev.results[k];
          if (result.isFinal) finalTranscript += result[0].transcript;
          else interim += result[0].transcript;
        }
        setVoice({ interim: interim.trim() });
        updateDraft((finalTranscript + interim).trim());
      };
      rec.onerror = (ev) => {
        if (ev.error === "aborted") return; // normal when we stop() / abort()
        listening = false;
        const e = ev.error;
        if (e === "not-allowed") {
          setVoice({ error: "麦克风权限被拒绝。请检查 macOS「系统设置 → 隐私与安全性 → 麦克风」是否允许 Chrome，以及地址栏锁形图标 → 网站设置中麦克风是否为「允许」，然后刷新页面重试。", recording: false, interim: "" });
        } else if (e === "service-not-allowed" || e === "network") {
          browserNetworkFailed = true;
          const hint = loadSettings().asrEngine === "auto"
            ? "已自动切换到本地识别服务，下次点击收音将使用本地识别。"
            : "请在设置里把「识别引擎」改为「本地服务」。";
          setVoice({ error: "浏览器语音识别依赖 Google 服务，当前网络不可用。" + hint, recording: false, interim: "" });
        } else if (e === "no-speech") {
          setVoice({ recording: false, interim: "" });
        } else if (e === "audio-capture") {
          setVoice({ error: "无法捕获麦克风音频，请检查麦克风设备是否被其他应用占用。", recording: false, interim: "" });
        } else {
          setVoice({ error: "语音识别错误: " + e, recording: false, interim: "" });
        }
      };
      rec.onend = () => {
        if (listening) {
          try { rec.start(); } catch { listening = false; setVoice({ recording: false, interim: "" }); }
          return;
        }
        setVoice({ recording: false, interim: "" });
        commitFinal();
      };

      recognizer = rec;
      activeEngine = "browser";
      listening = true;
      try { rec.start(); } catch {
        listening = false;
        commitOnEnd = null;
        setVoice({ recording: false, error: "无法启动语音识别" });
      }
    }

    // ── server engine (local sherpa-onnx via /api/voice/asr WebSocket) ──────
    let serverWs = null;
    let serverMicStream = null;
    let serverAudioCtx = null;
    let serverSource = null;
    let serverProcessor = null;

    function serverError(message) {
      listening = false;
      commitOnEnd = null;
      activeEngine = null;
      if (serverWs) { try { serverWs.close(); } catch { /* noop */ } serverWs = null; }
      teardownCapture();
      setVoice({ recording: false, interim: "", error: message });
    }

    function teardownCapture() {
      if (serverMicStream) { for (const t of serverMicStream.getTracks()) t.stop(); serverMicStream = null; }
      if (serverSource) { try { serverSource.disconnect(); } catch { /* noop */ } serverSource = null; }
      if (serverProcessor) { try { serverProcessor.disconnect(); } catch { /* noop */ } serverProcessor = null; }
      if (serverAudioCtx) { try { serverAudioCtx.close(); } catch { /* noop */ } serverAudioCtx = null; }
    }

    function startServerEngine(ctx) {
      if (typeof WebSocket === "undefined") {
        serverError("当前浏览器不支持 WebSocket，无法连接本地识别服务。");
        return;
      }
      const wsUrl = (location.protocol === "https:" ? "wss://" : "ws://") + location.host + "/api/voice/asr";
      let ws;
      try { ws = new WebSocket(wsUrl); } catch {
        serverError("无法创建本地识别连接。");
        return;
      }
      serverWs = ws;
      ws.binaryType = "arraybuffer";
      const isCurrent = () => serverWs === ws;
      ws.onopen = () => { if (isCurrent()) startServerCapture(ws); };
      ws.onmessage = (ev) => {
        if (!isCurrent()) return;
        let msg;
        try { msg = JSON.parse(ev.data); } catch { return; }
        if (msg.type === "partial") {
          setVoice({ interim: msg.text || "" });
          updateDraft(msg.text || "");
        } else if (msg.type === "final") {
          finalTranscript = msg.text || "";
          setVoice({ interim: "" });
          updateDraft(finalTranscript);
        } else if (msg.type === "endpoint") {
          // Silence detected → auto-stop in 自由交流 mode.
          if (loadSettings().autoSubmit) stopListening();
        } else if (msg.type === "error") serverError(msg.message || "本地识别服务错误");
      };
      ws.onerror = () => { if (isCurrent()) serverError("本地识别服务未连接。请确认 dsh-voice-server 已安装并已重启服务，或在设置里改用浏览器引擎。"); };
      ws.onclose = () => {
        if (!isCurrent()) return;
        serverWs = null;
        teardownCapture();
        setVoice({ recording: false, interim: "" });
        if (activeEngine === "server") {
          activeEngine = null;
          commitFinal();
        }
      };
      activeEngine = "server";
      listening = true;
    }

    function startServerCapture(ws) {
      if (!navigator.mediaDevices || !navigator.mediaDevices.getUserMedia) {
        serverError("此环境不支持麦克风访问（getUserMedia 不可用）。");
        return;
      }
      navigator.mediaDevices.getUserMedia({ audio: true }).then((stream) => {
        if (ws.readyState !== ws.OPEN) { for (const t of stream.getTracks()) t.stop(); return; }
        serverMicStream = stream;
        const Ctx = window.AudioContext || window.webkitAudioContext;
        const ctx = new Ctx({ sampleRate: 16000 });
        serverAudioCtx = ctx;
        const source = ctx.createMediaStreamSource(stream);
        // ScriptProcessor is deprecated but universally supported; 16k mono PCM is what sherpa expects.
        const processor = ctx.createScriptProcessor(4096, 1, 1);
        const zeroGain = ctx.createGain();
        zeroGain.gain.value = 0; // keep the graph connected without feeding the speakers
        processor.onaudioprocess = (ev) => {
          const input = ev.inputBuffer.getChannelData(0);
          const pcm = new Int16Array(input.length);
          for (let i = 0; i < input.length; i++) {
            const s = Math.max(-1, Math.min(1, input[i]));
            pcm[i] = s < 0 ? s * 0x8000 : s * 0x7fff;
          }
          if (ws.readyState === ws.OPEN) ws.send(pcm.buffer);
        };
        source.connect(processor);
        processor.connect(zeroGain);
        zeroGain.connect(ctx.destination);
        serverSource = source;
        serverProcessor = processor;
        setVoice({ recording: true, interim: "", error: null });
      }).catch((err) => {
        serverError(micErrorMessage({ reason: (err && err.name === "NotAllowedError" || err && err.name === "SecurityError") ? "permission" : (err && err.name === "NotFoundError" ? "device" : "other"), detail: String(err && err.message || err) }));
      });
    }

    function stopListening() {
      if (!listening) return;
      listening = false;
      setVoice({ recording: false, interim: "" });
      if (activeEngine === "browser") {
        if (recognizer !== null) { try { recognizer.stop(); } catch { /* noop */ } }
        return;
      }
      if (activeEngine === "server") {
        teardownCapture();
        if (serverWs && serverWs.readyState === serverWs.OPEN) {
          serverWs.send(JSON.stringify({ type: "stop" })); // server replies final, then closes → onclose commits
        } else {
          commitFinal();
        }
      }
    }

    function cancelListening() {
      if (activeEngine === "browser" && recognizer !== null) {
        listening = false;
        commitOnEnd = null;
        try { recognizer.abort(); } catch { /* noop */ }
      } else if (activeEngine === "server") {
        listening = false;
        commitOnEnd = null;
        teardownCapture();
        if (serverWs) { try { serverWs.close(); } catch { /* noop */ } serverWs = null; }
      }
      setVoice({ recording: false, interim: "" });
    }

    // ─────────────────────────────── styles ──────────────────────────────────
    const css = [
      ".dsh-voice-btn{display:inline-grid;place-items:center;width:28px;height:28px;padding:0;border:none;border-radius:8px;background:transparent;color:var(--dsw-alias-label-secondary,#a8b3c4);cursor:pointer;font-size:14px;line-height:1}",
      ".dsh-voice-btn:hover:not(:disabled){background:var(--dsw-alias-interactive-bg-hover,rgba(127,140,160,.16));color:var(--dsw-alias-label-primary,#e8edf4)}",
      ".dsh-voice-btn:disabled{opacity:.35;cursor:not-allowed}",
      ".dsh-voice-btn-active{color:#ff6b6b}",
      ".dsh-voice-btn-recording{color:#ff5252;animation:dshVoicePulse 1.2s ease-in-out infinite}",
      ".dsh-voice-mode{display:inline-flex;align-items:center;gap:4px;width:auto;height:26px;padding:0 10px;font-size:12px;font-weight:500;white-space:nowrap;color:var(--dsw-alias-label-secondary,#a8b3c4)}",
      ".dsh-voice-mode:hover:not(:disabled){color:var(--dsw-alias-label-primary,#e8edf4)}",
      "@keyframes dshVoicePulse{0%,100%{opacity:1}50%{opacity:.45}}",
      ".dsh-voice-dock{display:flex;align-items:center;gap:8px;min-height:18px;font-size:12px;color:var(--dsw-alias-label-secondary,#a8b3c4)}",
      ".dsh-voice-dock .dsh-voice-interim{color:var(--dsw-alias-label-tertiary,#7c8798);font-style:italic;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:60%}",
      ".dsh-voice-dock .dsh-voice-error{color:#ff6b6b}",
      ".dsh-voice-read{display:inline-flex;align-items:center;margin-left:6px}",
      ".dsh-voice-settings{display:flex;flex-direction:column;gap:12px;padding:16px}",
      ".dsh-voice-settings h3{margin:0 0 4px;font-size:15px;font-weight:600;color:var(--dsw-alias-label-primary,#e8edf4)}",
      ".dsh-voice-row{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:var(--dsw-alias-label-secondary,#a8b3c4)}",
      ".dsh-voice-row label{display:flex;align-items:center;gap:8px;cursor:pointer}",
      ".dsh-voice-row input[type=range]{width:140px}",
      ".dsh-voice-row select{background:var(--dsw-alias-bg-layer-2,#1b2230);color:var(--dsw-alias-label-primary,#e8edf4);border:1px solid var(--dsw-alias-border-l1,#2a3446);border-radius:8px;padding:4px 8px;font-size:13px}"
    ].join("");
    const styleTagId = "dsh-voice-client/styles";
    if (typeof document !== "undefined" && document.querySelector("style[data-plugin-css=" + JSON.stringify(styleTagId) + "]") === null) {
      const tag = document.createElement("style");
      tag.dataset.plugin = "dsh-voice-client";
      tag.dataset.pluginCss = styleTagId;
      tag.textContent = css;
      document.head.appendChild(tag);
    }

    // ─────────────────────────────── locale ──────────────────────────────────
    const NS = "voice";
    const zh = {
      "mic.title.hold": "语音输入：按住说话",
      "mic.title.toggle": "语音输入：点击开始 / 再点结束",
      "mic.title.unsupported": "当前浏览器不支持语音识别，请使用 Chrome 或 Edge",
      "mic.recording": "松开完成识别",
      "status.listening": "正在聆听…",
      "status.speaking": "正在朗读…",
      "read.speak": "朗读这条回复",
      "read.stop": "停止朗读",
      "settings.title": "语音交流",
      "settings.lang": "识别 / 朗读语言",
      "settings.engine": "识别引擎",
      "settings.engine.server": "本地服务（推荐，离线）",
      "settings.engine.browser": "浏览器（依赖 Google 服务）",
      "settings.engine.auto": "自动（优先浏览器，失败回退本地）",
      "settings.mode": "说话方式",
      "settings.mode.hold": "按住说话",
      "settings.mode.toggle": "点击切换",
      "mode.dictation": "听写模式",
      "mode.chat": "自由交流模式",
      "mode.toChat": "切换到自由交流模式（说完自动发送并朗读回复）",
      "mode.toDictation": "切换到听写模式（手动发送）",
      "settings.autoSubmit": "识别后自动发送",
      "settings.autoRead": "自动朗读回复",
      "settings.tts": "朗读语音引擎",
      "settings.tts.edge": "微软神经语音（自然，需联网）",
      "settings.tts.piper": "Piper 本地（离线）",
      "settings.tts.browser": "系统语音",
      "settings.voice": "朗读音色",
      "settings.rate": "朗读语速",
      "settings.skipCode": "朗读时跳过代码块",
      "settings.test": "试听",
      "settings.test.text": "你好，我是你的语音助手。现在可以开始语音交流了。",
      "settings.unsupported": "当前浏览器不支持语音识别（请使用 Chrome 或 Edge），但朗读功能可用。"
    };
    const en = {
      "mic.title.hold": "Voice input: hold to talk",
      "mic.title.toggle": "Voice input: click to start / click again to stop",
      "mic.title.unsupported": "Speech recognition is not supported by this browser; use Chrome or Edge",
      "mic.recording": "Release to finish",
      "status.listening": "Listening…",
      "status.speaking": "Speaking…",
      "read.speak": "Read this reply aloud",
      "read.stop": "Stop reading",
      "settings.title": "Voice",
      "settings.lang": "Recognition / reading language",
      "settings.engine": "Recognition engine",
      "settings.engine.server": "Local service (offline, recommended)",
      "settings.engine.browser": "Browser (needs Google service)",
      "settings.engine.auto": "Auto (browser first, fall back to local)",
      "settings.mode": "Input mode",
      "settings.mode.hold": "Hold to talk",
      "settings.mode.toggle": "Click to toggle",
      "mode.dictation": "Dictation",
      "mode.chat": "Voice chat",
      "mode.toChat": "Switch to voice chat (auto-send and read replies)",
      "mode.toDictation": "Switch to dictation (send manually)",
      "settings.autoSubmit": "Auto-send after recognition",
      "settings.autoRead": "Auto-read replies",
      "settings.tts": "Reading voice engine",
      "settings.tts.edge": "Microsoft neural (natural, online)",
      "settings.tts.piper": "Piper local (offline)",
      "settings.tts.browser": "System voice",
      "settings.voice": "Reading voice",
      "settings.rate": "Reading rate",
      "settings.skipCode": "Skip code blocks when reading",
      "settings.test": "Test",
      "settings.test.text": "Hi, I am your voice assistant. Let's start talking.",
      "settings.unsupported": "Speech recognition is not supported by this browser (use Chrome or Edge); reading aloud still works."
    };

    // ─────────────────────────── helper: assistant text ──────────────────────
    function assistantTextOf(node) {
      if (!node || node.kind !== "assistant" || !Array.isArray(node.blocks)) return "";
      const text = node.blocks.filter((b) => b.kind === "text").map((b) => b.text).join("");
      const cleaned = loadSettings().skipCode ? cleanMarkdown(text) : text;
      return cleaned;
    }

    // ───────────────────── component: VoiceModeToggle ────────────────────────
    function VoiceModeToggle(props) {
      const { t } = props;
      const [, force] = useState(0);
      const chat = loadSettings().autoSubmit; // true = 自由交流, false = 听写
      const toggle = () => {
        saveSettings({ autoSubmit: !chat, autoRead: !chat });
        force((n) => n + 1);
      };
      const label = chat ? "💬 " + t("mode.chat") : "✍️ " + t("mode.dictation");
      return jsx("button", {
        type: "button",
        className: "dsh-voice-btn dsh-voice-mode" + (chat ? " dsh-voice-btn-active" : ""),
        title: chat ? t("mode.toDictation") : t("mode.toChat"),
        "aria-label": chat ? t("mode.toDictation") : t("mode.toChat"),
        onClick: toggle,
        children: label
      });
    }

    // ─────────────────────────── component: MicButton ────────────────────────
    function MicButton(props) {
      const { t, input, inputActions } = props;
      const voice = useVoice();
      const recording = voice.recording;
      const serverOk = typeof navigator !== "undefined" && !!(navigator.mediaDevices && navigator.mediaDevices.getUserMedia);
      const supported = asrSupported() || serverOk;
      const mode = loadSettings().mode;

      const draftRef = useRef("");
      draftRef.current = typeof input?.draft === "string" ? input.draft : "";
      const actionsRef = useRef({ setDraft: null, submit: null });
      actionsRef.current = {
        setDraft: typeof inputActions?.setDraft === "function" ? inputActions.setDraft : null,
        submit: typeof inputActions?.submit === "function" ? inputActions.submit : null
      };

      const makeCtx = () => ({
        readDraft: () => draftRef.current,
        setDraft: (text) => actionsRef.current.setDraft?.(text),
        submit: () => actionsRef.current.submit?.()
      });
      // Publish the mic context so the auto-resume loop can restart listening.
      useEffect(() => { lastMicCtx = makeCtx(); });

      const handleStart = () => {
        if (!supported || recording) return;
        loopActive = loadSettings().autoSubmit === true; // hands-free loop only in 自由交流
        startListening(makeCtx());
      };
      const handleStop = () => {
        if (!recording) return;
        stopLoop();
      };
      const handleToggle = () => {
        if (recording) handleStop(); else handleStart();
      };

      const title = !supported ? t("mic.title.unsupported")
        : recording ? t("mic.recording")
        : mode === "hold" ? t("mic.title.hold") : t("mic.title.toggle");

      const buttonProps = {
        type: "button",
        className: "dsh-voice-btn" + (recording ? " dsh-voice-btn-recording" : ""),
        title,
        "aria-label": title,
        disabled: !supported,
        children: recording ? "⏹" : "🎤"
      };

      if (mode === "hold") {
        buttonProps.onPointerDown = (e) => {
          e.preventDefault();
          try { e.currentTarget.setPointerCapture(e.pointerId); } catch { /* noop */ }
          handleStart();
        };
        buttonProps.onPointerUp = (e) => {
          e.preventDefault();
          handleStop();
        };
        buttonProps.onPointerCancel = () => { handleStop(); };
      } else {
        buttonProps.onClick = handleToggle;
      }

      return jsx("button", buttonProps);
    }

    // ─────────────────────────── component: ReadAloud ────────────────────────
    const spokenTurns = new Set(); // session:seq keys already auto-read this fiber
    function ReadAloud(props) {
      const { t, messageId, useSession } = props;
      const voice = useVoice();
      const sessionId = useSession((s) => (s ? s.sessionId : undefined));
      const node = useSession((s) => (s && Array.isArray(s.nodes) ? s.nodes.find((n) => n.kind === "assistant" && n.messageId === messageId) : undefined));
      const text = useMemo(() => assistantTextOf(node), [node]);
      const key = "msg:" + (sessionId ? sessionId + ":" : "") + String(messageId);
      const isSpeaking = voice.speaking && voice.speakingKey === key;

      // Auto-read when the turn closes (component mounts after finalize).
      useEffect(() => {
        if (!loadSettings().autoRead || !text || !sessionId) return;
        if (spokenTurns.has(key)) return;
        spokenTurns.add(key);
        const timer = setTimeout(() => speakText(text, key), 400);
        return () => clearTimeout(timer);
      }, [key, text, sessionId]);

      const toggle = () => {
        if (isSpeaking) ttsStop();
        else speakText(text, key);
      };

      return jsx("div", {
        className: "dsh-voice-read",
        children: jsx("button", {
          type: "button",
          className: "dsh-voice-btn" + (isSpeaking ? " dsh-voice-btn-active" : ""),
          title: isSpeaking ? t("read.stop") : t("read.speak"),
          "aria-label": isSpeaking ? t("read.stop") : t("read.speak"),
          disabled: !text,
          onClick: toggle,
          children: isSpeaking ? "🔇" : "🔊"
        })
      });
    }

    // ──────────────────────── component: VoiceStatusLine ─────────────────────
    function VoiceStatusLine(props) {
      const { t } = props;
      const voice = useVoice();
      if (!voice.recording && !voice.speaking && !voice.error) return null;
      let content;
      if (voice.error) {
        content = jsx("span", { className: "dsh-voice-error", children: "⚠️ " + voice.error });
      } else if (voice.recording) {
        content = jsxs(Fragment, {
          children: [
            jsx("span", { children: "🎙️ " + t("status.listening") }),
            voice.interim ? jsx("span", { className: "dsh-voice-interim", children: "「" + voice.interim + "」" }) : null
          ]
        });
      } else {
        content = jsx("span", { children: "🔊 " + t("status.speaking") });
      }
      return jsx("div", { className: "dsh-voice-dock", children: content });
    }

    // ───────────────────────── component: VoiceSettings ──────────────────────
    function VoiceSettings(props) {
      const { t } = props;
      const [settings, setSettings] = useState(loadSettings);
      const update = (patch) => setSettings(saveSettings(patch));

      const lang = settings.lang;
      const mode = settings.mode;
      const engine = settings.asrEngine;
      const row = (label, control) => jsx("div", { className: "dsh-voice-row", children: [jsx("span", { children: label }), control] });

      const children = [
        jsx("h3", { children: "🗣️ " + t("settings.title") }),
        !asrSupported() ? jsx("div", { className: "dsh-voice-row dsh-voice-error", children: t("settings.unsupported") }) : null,
        row(t("settings.engine"), jsx("select", {
          value: engine,
          onChange: (e) => update({ asrEngine: e.target.value }),
          children: [
            jsx("option", { value: "server", children: t("settings.engine.server") }),
            jsx("option", { value: "browser", children: t("settings.engine.browser") }),
            jsx("option", { value: "auto", children: t("settings.engine.auto") })
          ]
        })),
        row(t("settings.lang"), jsx("select", {
          value: lang,
          onChange: (e) => update({ lang: e.target.value }),
          children: [
            jsx("option", { value: "zh-CN", children: "中文（普通话）" }),
            jsx("option", { value: "zh-TW", children: "中文（台湾）" }),
            jsx("option", { value: "en-US", children: "English (US)" }),
            jsx("option", { value: "en-GB", children: "English (UK)" }),
            jsx("option", { value: "ja-JP", children: "日本語" }),
            jsx("option", { value: "ko-KR", children: "한국어" })
          ]
        })),
        row(t("settings.mode"), jsxs("span", {
          children: [
            jsx("label", { children: [jsx("input", { type: "radio", name: "dsh-voice-mode", checked: mode === "hold", onChange: () => update({ mode: "hold" }) }), t("settings.mode.hold")] }),
            jsx("label", { children: [jsx("input", { type: "radio", name: "dsh-voice-mode", checked: mode === "toggle", onChange: () => update({ mode: "toggle" }) }), t("settings.mode.toggle")] })
          ]
        })),
        row(t("settings.autoSubmit"), jsx("input", { type: "checkbox", checked: settings.autoSubmit, onChange: (e) => update({ autoSubmit: e.target.checked }) })),
        row(t("settings.autoRead"), jsx("input", { type: "checkbox", checked: settings.autoRead, onChange: (e) => update({ autoRead: e.target.checked }) })),
        row(t("settings.tts"), jsx("select", {
          value: settings.ttsEngine,
          onChange: (e) => update({ ttsEngine: e.target.value }),
          children: [
            jsx("option", { value: "edge", children: t("settings.tts.edge") }),
            jsx("option", { value: "piper", children: t("settings.tts.piper") }),
            jsx("option", { value: "browser", children: t("settings.tts.browser") })
          ]
        })),
        settings.ttsEngine === "edge" ? row(t("settings.voice"), jsx("select", {
          value: settings.ttsVoice,
          onChange: (e) => update({ ttsVoice: e.target.value }),
          children: [
            jsx("option", { value: "zh-CN-XiaoyiNeural", children: "晓伊（温暖活泼 女声）" }),
            jsx("option", { value: "zh-CN-XiaoxiaoNeural", children: "晓晓（温柔 女声）" }),
            jsx("option", { value: "zh-CN-YunxiNeural", children: "云希（温暖 男声）" }),
            jsx("option", { value: "zh-CN-YunjianNeural", children: "云健（沉稳 男声）" }),
            jsx("option", { value: "zh-CN-YunxiaNeural", children: "云夏（活泼 男声）" }),
            jsx("option", { value: "zh-CN-YunyangNeural", children: "云扬（新闻 男声）" })
          ]
        })) : null,
        row(t("settings.rate"), jsx("input", {
          type: "range", min: 0.5, max: 2, step: 0.1, value: settings.rate,
          onChange: (e) => update({ rate: Number(e.target.value) }),
          title: String(settings.rate)
        })),
        row(t("settings.skipCode"), jsx("input", { type: "checkbox", checked: settings.skipCode, onChange: (e) => update({ skipCode: e.target.checked }) })),
        row(t("settings.test"), jsx("button", {
          type: "button",
          className: "dsh-voice-btn",
          onClick: () => speakText(t("settings.test.text"), "voice-test"),
          children: "🔊"
        }))
      ];

      return jsx("section", { className: "dsh-voice-settings", children });
    }

    // ─────────────────────────────── registration ────────────────────────────
    const inject = ["slots", "locale"];

    function apply(ctx) {
      ctx.effect(() => ctx.locale.register(NS, { zh, en }), "dsh-voice: dictionaries");

      // Core: read-aloud button (+ auto-read) on each finalized assistant message.
      ctx.slots.inject("conversation.chat.assistant-actions", () => ctx.slots.register({
        name: "conversation.chat.assistant-actions",
        id: "dsh-voice-read",
        order: 100,
        locale: NS
      }, ReadAloud));

      // Core: mic button in the composer tool row.
      ctx.slots.inject("conversation.input.right", () => ctx.slots.register({
        name: "conversation.input.right",
        id: "dsh-voice-mic",
        order: 100,
        locale: NS
      }, MicButton));

      // Voice status line under the composer.
      ctx.slots.inject("conversation.composer.dock", () => ctx.slots.register({
        name: "conversation.composer.dock",
        id: "dsh-voice-status",
        order: 100,
        locale: NS
      }, VoiceStatusLine));

      // Voice settings section.
      ctx.slots.inject("settings.section", () => ctx.slots.register({
        name: "settings.section",
        id: "dsh-voice-settings",
        order: 25,
        label: () => ctx.locale.bind(NS)("settings.title"),
        locale: NS
      }, VoiceSettings));

      // Dictation / voice-chat mode switch in the composer tool row (left).
      ctx.slots.inject("conversation.input.left", () => ctx.slots.register({
        name: "conversation.input.left",
        id: "dsh-voice-mode-toggle",
        order: 100,
        locale: NS
      }, VoiceModeToggle));
    }

    exports.apply = apply;
    exports.inject = inject;
    return module.exports;
  }
});