// voice_inject.js —— 注入到 Codex 页面(app://-/index.html)的脚本，以字符串形式导出。
// 由 voice_cdp.js 经 CDP Page.addScriptToEvaluateOnNewDocument(常驻) + Runtime.evaluate(立即) 注入。
// 职责：在 .composer-footer 插麦克风按钮；点击录音→MediaRecorder 出 Blob→base64 经
// window.__voiceBridge(CDP binding) 回传主进程转写→回传文字→execCommand('insertText') 写回 composer。
// 写回手法参考 CodexPlusPlus 粘贴修复(renderer-inject.js 约第 8952 行)：document.execCommand('insertText', false, text)。

// 注意：脚本体用普通模板字符串包裹；内部避免出现 ${（已无）与裸反引号（内部的模板字符串反引号需转义为 \`)。
const INJECT_SCRIPT = `
(() => {
  const VER = "voice-inject-v6";
  if (window.__voiceInjectInstalled === VER) return;
  // 版本变了或首次：清理旧按钮/旧 observer，重新安装
  if (window.__voiceInjectObserver) { try { window.__voiceInjectObserver.disconnect(); } catch {} }
  const oldBtn = document.getElementById("codex-voice-input-btn");
  if (oldBtn) oldBtn.remove();
  window.__voiceInjectInstalled = VER;

  const TAG = "[VoiceInput]";
  const BTN_ID = "codex-voice-input-btn";
  const STYLE_ID = "codex-voice-input-style-v6";

  // —— 样式 ——
  if (!document.getElementById(STYLE_ID)) {
    const st = document.createElement("style");
    st.id = STYLE_ID;
    st.textContent = \`
      .codex-voice-input-btn{
        display:inline-flex;align-items:center;justify-content:center;flex:none;
        width:32px;height:32px;padding:0;border:0;border-radius:999px;
        background:rgba(17,24,39,.04);color:var(--text-secondary,#6b7280);
        cursor:pointer;line-height:1;transition:background .15s,color .15s,box-shadow .15s,transform .15s;
        -webkit-app-region:no-drag;
      }
      .codex-voice-input-btn:hover{
        background:rgba(17,24,39,.08);color:var(--text-primary,#111827);
        box-shadow:0 1px 4px rgba(15,23,42,.08);
      }
      .codex-voice-input-btn:active{transform:scale(.96);}
      .codex-voice-input-btn:focus-visible{outline:2px solid rgba(59,130,246,.55);outline-offset:2px;}
      .codex-voice-input-btn .cv-ico{width:17px;height:17px;display:block;}
      .codex-voice-input-btn .cv-ico svg{width:100%;height:100%;display:block;stroke:currentColor;}
      .codex-voice-input-btn[data-state="recording"]{
        background:rgba(239,68,68,.12);color:#ef4444;
        animation:codexVoicePulse 1.1s ease-in-out infinite;
      }
      .codex-voice-input-btn[data-state="transcribing"]{background:rgba(59,130,246,.1);color:#2563eb;cursor:wait;}
      .codex-voice-input-btn[data-state="transcribing"] .cv-ico{animation:codexVoiceSpin .8s linear infinite;}
      .codex-voice-input-btn[data-state="error"]{background:rgba(239,68,68,.1);color:#dc2626;}
      @media (prefers-color-scheme:dark){
        .codex-voice-input-btn{background:rgba(255,255,255,.05);color:var(--text-secondary,#a1a1aa);}
        .codex-voice-input-btn:hover{background:rgba(255,255,255,.1);color:var(--text-primary,#f4f4f5);box-shadow:none;}
      }
      @keyframes codexVoicePulse{0%,100%{box-shadow:0 0 0 0 rgba(239,68,68,.42)}50%{box-shadow:0 0 0 7px rgba(239,68,68,0)}}
      @keyframes codexVoiceSpin{to{transform:rotate(360deg)}}
      .codex-voice-toast{
        position:fixed;left:50%;bottom:96px;transform:translateX(-50%);
        background:rgba(24,24,27,.96);color:#f3f4f6;padding:9px 16px;border-radius:10px;
        font:13px system-ui,sans-serif;z-index:999999;box-shadow:0 8px 30px rgba(0,0,0,.5);
        max-width:80vw;
      }
    \`;
    (document.head || document.documentElement).appendChild(st);
  }

  function toast(msg, ms = 2400) {
    const t = document.createElement("div");
    t.className = "codex-voice-toast";
    t.textContent = msg;
    document.body.appendChild(t);
    setTimeout(() => t.remove(), ms);
  }

  // —— binding 通道（window.__voiceBridge 由主进程 CDP addBinding 注入）——
  const pending = new Map();
  let seq = 0;
  window.__voiceInjectHandle = (msg) => {
    let p;
    try {
      p = typeof msg === "string" ? JSON.parse(msg) : msg;
    } catch {
      return;
    }
    const entry = pending.get(p.id);
    if (!entry) return;
    pending.delete(p.id);
    if (p.err) entry.reject(new Error(p.err));
    else entry.resolve(p.text || "");
  };
  function sendToBackend(audioB64, mime) {
    const id = String(++seq);
    return new Promise((resolve, reject) => {
      pending.set(id, { resolve, reject });
      if (typeof window.__voiceBridge !== "function") {
        pending.delete(id);
        reject(new Error("语音通道未就绪，请重新连接工具箱"));
        return;
      }
      try {
        window.__voiceBridge(JSON.stringify({ id, kind: "transcribe", audioB64, mime }));
      } catch (e) {
        pending.delete(id);
        reject(e);
      }
    });
  }

  // —— 找底部输入工具栏：从编辑器往上找含 footer 的工具行容器 ——
  function findToolbar() {
    const rich = document.querySelector("DIV.ProseMirror, [contenteditable], textarea");
    if (!rich) return null;
    let p = rich;
    for (let i = 0; i < 6 && p; i++) {
      const foot = p.querySelector("[class*='_footer_'], [class*='composer-footer'], footer.composer, [class*='footer'][class*='composer']");
      if (foot && foot.querySelectorAll("button, [role='button']").length >= 2) return foot;
      p = p.parentElement;
    }
    return null;
  }
  function findEditor() {
    return (
      document.querySelector("DIV.ProseMirror") ||
      document.querySelector("[contenteditable='true'],[contenteditable='']") ||
      document.querySelector("textarea")
    );
  }

  // —— 录音 ——
  let mediaRecorder = null;
  let chunks = [];
  let curBtn = null;
  let stopTimer = null;

  function setBtnState(btn, st) {
    if (!btn) return;
    btn.dataset.state = st || "";
    const label =
      st === "recording" ? "停止录音" :
      st === "transcribing" ? "转写中…" :
      st === "error" ? "语音输入出错" :
      "语音输入";
    const icon =
      st === "recording"
        ? '<svg viewBox="0 0 24 24" fill="none" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><rect x="8" y="8" width="8" height="8" rx="1.5"></rect></svg>'
        : st === "transcribing"
        ? '<svg viewBox="0 0 24 24" fill="none" stroke-width="2.3" stroke-linecap="round" aria-hidden="true"><path d="M12 3a9 9 0 1 1-8.2 5.3"></path></svg>'
        : '<svg viewBox="0 0 24 24" fill="none" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M12 3a3 3 0 0 0-3 3v5a3 3 0 0 0 6 0V6a3 3 0 0 0-3-3Z"></path><path d="M19 10v1a7 7 0 0 1-14 0v-1"></path><path d="M12 18v3"></path><path d="M8 21h8"></path></svg>';
    btn.innerHTML = '<span class="cv-ico">' + icon + '</span>';
    btn.title = label;
    btn.setAttribute("aria-label", label);
  }

  async function startRecording(btn) {
    if (!navigator.mediaDevices || !navigator.mediaDevices.getUserMedia) {
      toast("此环境不支持麦克风");
      setBtnState(btn, "error");
      return;
    }
    let stream;
    try {
      stream = await navigator.mediaDevices.getUserMedia({ audio: true });
    } catch (e) {
      const name = (e && e.name) || "";
      if (name === "NotAllowedError" || name === "SecurityError") {
        toast("麦克风被拒绝：系统设置 → 隐私 → 麦克风 → 允许 ChatGPT", 4200);
      } else {
        toast("无法访问麦克风：" + (e && e.message ? e.message : name));
      }
      setBtnState(btn, "error");
      return;
    }
    curBtn = btn;
    chunks = [];
    const mime = MediaRecorder.isTypeSupported("audio/webm")
      ? "audio/webm"
      : MediaRecorder.isTypeSupported("audio/mp4")
      ? "audio/mp4"
      : "";
    try {
      mediaRecorder = new MediaRecorder(stream, mime ? { mimeType: mime } : undefined);
    } catch (e) {
      toast("录音器初始化失败");
      setBtnState(btn, "error");
      stream.getTracks().forEach((t) => t.stop());
      return;
    }
    mediaRecorder.ondataavailable = (e) => {
      if (e.data && e.data.size) chunks.push(e.data);
    };
    mediaRecorder.onstop = () => {
      stream.getTracks().forEach((t) => t.stop());
      const blob = new Blob(chunks, { type: mime || "audio/webm" });
      if (blob.size < 800) {
        toast("未录到声音");
        setBtnState(btn, "");
        return;
      }
      setBtnState(btn, "transcribing");
      const reader = new FileReader();
      reader.onload = async () => {
        const dataUrl = String(reader.result || "");
        const comma = dataUrl.indexOf(",");
        const b64 = comma >= 0 ? dataUrl.slice(comma + 1) : dataUrl;
        try {
          const text = await sendToBackend(b64, mime || "audio/webm");
          if (text) writeBack(text);
          else toast("转写结果为空");
        } catch (err) {
          toast("转写失败：" + (err && err.message ? err.message : err), 4200);
          setBtnState(btn, "error");
          return;
        }
        setBtnState(btn, "");
      };
      reader.onerror = () => {
        toast("音频读取失败");
        setBtnState(btn, "error");
      };
      reader.readAsDataURL(blob);
    };
    mediaRecorder.start();
    setBtnState(btn, "recording");
    stopTimer = setTimeout(() => stopRecording(), 60000);
  }
  function stopRecording() {
    if (stopTimer) {
      clearTimeout(stopTimer);
      stopTimer = null;
    }
    if (mediaRecorder && mediaRecorder.state !== "inactive") {
      try {
        mediaRecorder.stop();
      } catch {}
    }
  }

  function writeBack(text) {
    const ed = findEditor();
    if (!ed) {
      toast("未找到输入框，文字已无法填入", 3600);
      return;
    }
    try {
      ed.focus();
    } catch {}
    const inserted = document.execCommand("insertText", false, text);
    if (!inserted) {
      // 兜底：textarea / input 用 setRangeText
      if (ed.tagName === "TEXTAREA" || ed.tagName === "INPUT") {
        const s = ed.selectionStart || 0;
        const e = ed.selectionEnd || 0;
        const v = ed.value || "";
        ed.value = v.slice(0, s) + text + v.slice(e);
        const pos = s + text.length;
        try {
          ed.setSelectionRange(pos, pos);
        } catch {}
        ed.dispatchEvent(new Event("input", { bubbles: true }));
      } else {
        // contenteditable 兜底
        try {
          const sel = window.getSelection();
          const range = sel && sel.rangeCount ? sel.getRangeAt(0) : null;
          if (range) {
            range.deleteContents();
            range.insertNode(document.createTextNode(text));
          }
        } catch {}
      }
    }
  }

  function onBtnClick(btn) {
    if (mediaRecorder && mediaRecorder.state === "recording") {
      stopRecording();
      return;
    }
    startRecording(btn);
  }

  function makeButton() {
    const b = document.createElement("button");
    b.type = "button";
    b.id = BTN_ID;
    b.className = "codex-voice-input-btn";
    b.setAttribute("aria-label", "语音输入");
    b.addEventListener("click", (e) => {
      e.preventDefault();
      e.stopPropagation();
      onBtnClick(b);
    });
    setBtnState(b, "");
    return b;
  }

  // 在工具栏里找「发送按钮」：默认取工具栏最后一个 button（Codex 里发送在最右）。
  // 新版 Codex 会把模型选择和发送按钮包在右侧 action 容器里，语音按钮要挂到
  // 发送按钮的直接父容器，才能落在「模型选择」与「发送」之间。
  function findSendButton(toolbar) {
    const btns = toolbar.querySelectorAll("button, [role='button']");
    if (!btns || !btns.length) return null;
    return btns[btns.length - 1];
  }

  function containsNode(parent, child) {
    return !!(parent && child && (parent === child || parent.contains(child)));
  }

  let firstMount = true;
  function tryMount() {
    if (!firstMount && document.getElementById(BTN_ID)) return; // 已在，避免频繁重建丢焦点
    firstMount = false;
    const existing = document.getElementById(BTN_ID);
    if (existing) existing.remove(); // 重新注入时刷新一次，确保新样式/位置
    const toolbar = findToolbar();
    if (!toolbar) { firstMount = true; return; } // 工具栏还没出来，下次再试
    const sendBtn = findSendButton(toolbar);
    const btn = makeButton();
    const sendParent = sendBtn && sendBtn.parentElement;
    if (sendParent && containsNode(toolbar, sendParent)) {
      sendParent.insertBefore(btn, sendBtn); // 插在发送按钮前，保持在右侧 action 组内
    } else {
      toolbar.appendChild(btn);
    }
  }

  // —— MutationObserver：composer/页面重建后重挂 ——
  let mo = null;
  function startObserver() {
    if (mo) return;
    mo = new MutationObserver(() => {
      if (!document.getElementById(BTN_ID)) { firstMount = true; tryMount(); }
    });
    window.__voiceInjectObserver = mo; // 供重新安装时 disconnect
    const root = document.body || document.documentElement;
    if (root) mo.observe(root, { childList: true, subtree: true });
    // 首次尝试
    tryMount();
  }
  function ensureStarted() {
    if (document.readyState === "loading") {
      document.addEventListener("DOMContentLoaded", startObserver, { once: true });
    } else {
      startObserver();
    }
  }
  ensureStarted();
})();
`;

module.exports = { INJECT_SCRIPT };