import fs from "node:fs";
import path from "node:path";
import process from "node:process";
import dns from "node:dns/promises";

import makeWASocket, {
  Browsers,
  DisconnectReason,
  downloadMediaMessage,
  extensionForMediaMessage,
  fetchLatestBaileysVersion,
  fetchLatestWaWebVersion,
  getContentType,
  jidNormalizedUser,
  proto,
} from "@whiskeysockets/baileys";
import { HttpsProxyAgent } from "https-proxy-agent";

import { loadAuthState, resolveAuthDir } from "./auth";
import { printQrToTerminal, writeQrImage } from "./qr";
import { writeBridgeStatus } from "./status";

type Json = Record<string, unknown>;

const LOCAL_BASE_URL = (process.env.AIA_GATEWAY_BASE_URL || "http://127.0.0.1:8787").trim();
const ACCOUNT_ID = (process.env.AIA_WHATSAPP_ACCOUNT_ID || "wa-default").trim();
const STATE_DIR = (process.env.OCLAW_STATE_DIR || path.resolve(process.cwd(), "state")).trim();
const LOGIN_ONLY = process.argv.includes("--login") || String(process.env.AIA_WHATSAPP_LOGIN_ONLY || "").trim() === "1";
const VERBOSE = process.argv.includes("--verbose") || String(process.env.AIA_WHATSAPP_VERBOSE || "").trim() === "1";
const PROXY_URL = (
  process.env.AIA_WHATSAPP_PROXY_URL ||
  process.env.HTTPS_PROXY ||
  process.env.HTTP_PROXY ||
  process.env.https_proxy ||
  process.env.http_proxy ||
  ""
).trim();
const MEDIA_MAX_BYTES = Number(process.env.OCLAW_WHATSAPP_MEDIA_MAX_BYTES || String(20 * 1024 * 1024)) || 20 * 1024 * 1024;
const MEDIA_DOWNLOAD_TIMEOUT_MS = Number(process.env.OCLAW_WHATSAPP_MEDIA_TIMEOUT_MS || "90000") || 90_000;
const TYPING_ENABLED =
  String(process.env.OCLAW_WHATSAPP_TYPING || "1").trim() !== "0" &&
  String(process.env.OCLAW_WHATSAPP_TYPING || "1").trim().toLowerCase() !== "false" &&
  String(process.env.OCLAW_WHATSAPP_TYPING || "1").trim().toLowerCase() !== "off";
const TYPING_HEARTBEAT_MS = Math.max(
  3000,
  Number(process.env.OCLAW_WHATSAPP_TYPING_HEARTBEAT_MS || "8000") || 8000,
);

function log(msg: string): void {
  process.stdout.write(`${new Date().toISOString()} [baileys-whatsapp] ${msg}\n`);
}

function ensureDir(dir: string): void {
  fs.mkdirSync(dir, { recursive: true });
}

function pickText(m: proto.IMessage | null | undefined): string {
  const u = unwrapMessage(m);
  if (!u) return "";
  const c = (u.conversation || "").trim();
  if (c) return c;
  const ext = (u.extendedTextMessage?.text || "").trim();
  if (ext) return ext;
  const imgCap = (u.imageMessage?.caption || "").trim();
  if (imgCap) return imgCap;
  const vidCap = (u.videoMessage?.caption || "").trim();
  if (vidCap) return vidCap;
  const docCap = (u.documentMessage?.caption || "").trim();
  if (docCap) return docCap;
  return "";
}

function unwrapMessage(m: proto.IMessage | null | undefined): proto.IMessage | null {
  if (!m) return null;
  const nested =
    m.ephemeralMessage?.message ||
    m.viewOnceMessage?.message ||
    m.viewOnceMessageV2?.message ||
    m.documentWithCaptionMessage?.message ||
    m.editedMessage?.message ||
    null;
  if (nested) return unwrapMessage(nested);
  return m;
}

function messageContextInfo(m: proto.IMessage | null | undefined): proto.IContextInfo | null | undefined {
  const u = unwrapMessage(m);
  if (!u) return null;
  const extCtx = u.extendedTextMessage?.contextInfo;
  // Reply+@ messages usually carry quote + mentions on extendedTextMessage.contextInfo.
  if (extCtx && (extCtx.quotedMessage || extCtx.stanzaId)) return extCtx;
  const top = (u as proto.IMessage & { messageContextInfo?: proto.IMessageContextInfo }).messageContextInfo;
  const fromTop = top?.mentionedJid?.length ? top : null;
  return (
    (fromTop as unknown as proto.IContextInfo) ||
    extCtx ||
    u.imageMessage?.contextInfo ||
    u.videoMessage?.contextInfo ||
    u.documentMessage?.contextInfo ||
    u.buttonsResponseMessage?.contextInfo ||
    u.listResponseMessage?.contextInfo ||
    u.templateButtonReplyMessage?.contextInfo ||
    null
  );
}

function extractMentionsFromUpsert(msg: proto.IWebMessageInfo): string[] {
  const fromBody = extractMentions(msg.message);
  const outer = (msg as proto.IWebMessageInfo & { messageContextInfo?: { mentionedJid?: string[] } })
    .messageContextInfo?.mentionedJid;
  const outerList = Array.isArray(outer) ? outer.map((j) => String(j || "").trim()).filter(Boolean) : [];
  const merged = [...fromBody, ...outerList];
  const seen = new Set<string>();
  const out: string[] = [];
  for (const j of merged) {
    const key = jidPhone(j) || j;
    if (seen.has(key)) continue;
    seen.add(key);
    out.push(j);
  }
  return out;
}

function jidPhone(jid: string): string {
  const head = String(jid || "").split("@")[0]?.split(":")[0] || "";
  return head.replace(/\D/g, "");
}

function jidsSameUser(a: string, b: string): boolean {
  const na = jidNormalizedUser(String(a || "").trim());
  const nb = jidNormalizedUser(String(b || "").trim());
  if (na && nb && na === nb) return true;
  const pa = jidPhone(a);
  const pb = jidPhone(b);
  return pa.length >= 6 && pa === pb;
}

function extractMentions(m: proto.IMessage | null | undefined): string[] {
  const ctx = messageContextInfo(m);
  const raw = ctx?.mentionedJid;
  if (!Array.isArray(raw)) return [];
  return raw.map((j) => String(j || "").trim()).filter(Boolean);
}

function pickQuotedText(m: proto.IMessage | null | undefined): string {
  const ctx = messageContextInfo(m);
  const qm = ctx?.quotedMessage;
  if (!qm) return "";
  return pickText(qm);
}

function extractQuoteContext(m: proto.IMessage | null | undefined): {
  participant: string;
  stanzaId: string;
  quotedText: string;
} {
  const ctx = messageContextInfo(m);
  return {
    participant: String(ctx?.participant || "").trim(),
    stanzaId: String(ctx?.stanzaId || "").trim(),
    quotedText: pickQuotedText(m),
  };
}

function resolveSenderJid(key: proto.IMessageKey): string {
  const participant = String(key.participant || "").trim();
  const participantAlt = String((key as any).participantAlt || "").trim();
  if (participantAlt && participant.toLowerCase().endsWith("@lid")) {
    return jidNormalizedUser(participantAlt);
  }
  if (participant) return jidNormalizedUser(participant);
  return "";
}

function resolvePnFromLid(sock: ReturnType<typeof makeWASocket> | null, lidJid: string): string {
  const lid = String(lidJid || "").trim();
  if (!lid || !sock) return "";
  const lidMapping = (sock as any)?.signalRepository?.lidMapping;
  if (!lidMapping || typeof lidMapping.getPNForLID !== "function") return "";
  try {
    const pn = lidMapping.getPNForLID(lid);
    return pn ? jidNormalizedUser(String(pn)) : "";
  } catch {
    return "";
  }
}

function resolveDmUserJid(key: proto.IMessageKey, sock: ReturnType<typeof makeWASocket> | null): string {
  const remoteJid = jidNormalizedUser(String(key.remoteJid || ""));
  const remoteJidAlt = String((key as any).remoteJidAlt || "").trim();
  if (remoteJidAlt) {
    const alt = jidNormalizedUser(remoteJidAlt);
    if (remoteJid.toLowerCase().endsWith("@lid") && alt.toLowerCase().includes("@s.whatsapp")) {
      return alt;
    }
    if (alt.toLowerCase().includes("@s.whatsapp")) return alt;
  }
  if (remoteJid.toLowerCase().endsWith("@lid")) {
    const pn = resolvePnFromLid(sock, remoteJid);
    if (pn) return pn;
  }
  return remoteJid;
}

function jidBaseLocal(jid: string): string {
  const s = String(jid || "").trim().toLowerCase();
  if (!s) return "";
  return s.split("@")[0]?.split(":")[0] || "";
}

function mentionMatchesBotIdentity(mention: string, botId: string): boolean {
  const m = String(mention || "").trim();
  const b = String(botId || "").trim();
  if (!m || !b) return false;
  if (jidNormalizedUser(m) === jidNormalizedUser(b)) return true;
  const mLid = m.toLowerCase().endsWith("@lid");
  const bLid = b.toLowerCase().endsWith("@lid");
  if (mLid || bLid) {
    const ml = jidBaseLocal(m);
    const bl = jidBaseLocal(b);
    if (ml && bl && ml === bl && ml.replace(/\D/g, "").length >= 6) return true;
    return false;
  }
  const mp = jidPhone(m);
  const bp = jidPhone(b);
  return (
    mp.length >= 6 &&
    mp === bp &&
    m.toLowerCase().includes("@s.whatsapp") &&
    b.toLowerCase().includes("@s.whatsapp")
  );
}

function collectBotIdentityJids(
  sock: ReturnType<typeof makeWASocket> | null,
  botPn: string,
  authCreds?: { me?: { id?: string; lid?: string } | null } | null,
): string[] {
  const out = new Set<string>();
  const pn = String(botPn || "").trim();
  if (pn) {
    out.add(pn);
    out.add(jidNormalizedUser(pn));
    const base = jidBaseLocal(pn);
    if (base) out.add(`${base}@s.whatsapp.net`);
  }
  const user = (sock as any)?.user;
  if (user?.id) out.add(String(user.id).trim());
  if (user?.lid) out.add(String(user.lid).trim());
  const creds = authCreds || (sock as any)?.authState?.creds;
  const me = creds?.me;
  if (me?.id) out.add(String(me.id).trim());
  if (me?.lid) out.add(String(me.lid).trim());
  const lidMapping = (sock as any)?.signalRepository?.lidMapping;
  if (lidMapping && pn) {
    for (const variant of Array.from(out)) {
      if (!variant.includes("@s.whatsapp")) continue;
      try {
        if (typeof lidMapping.getLIDForPN === "function") {
          const lid = lidMapping.getLIDForPN(variant);
          if (lid) out.add(String(lid));
        }
      } catch {
        // ignore
      }
    }
  }
  return Array.from(out).filter(Boolean);
}

function pickBotLid(botIds: string[]): string {
  for (const id of botIds) {
    if (String(id || "").toLowerCase().includes("@lid")) return String(id);
  }
  return "";
}

function messageMentionsBot(
  sock: ReturnType<typeof makeWASocket> | null,
  mentions: string[],
  botPn: string,
  botIds?: string[],
  authCreds?: { me?: { id?: string; lid?: string } | null } | null,
): boolean {
  const ids = botIds?.length ? botIds : collectBotIdentityJids(sock, botPn, authCreds);
  if (!ids.length || !mentions.length) return false;
  for (const m of mentions) {
    const mention = String(m || "").trim();
    if (!mention) continue;
    for (const botId of ids) {
      if (mentionMatchesBotIdentity(mention, botId)) return true;
    }
  }
  return false;
}

function isStatusOrBroadcastJid(jid: string): boolean {
  const low = String(jid || "").toLowerCase();
  return low === "status@broadcast" || low.endsWith("@broadcast");
}

function inferExtension(contentType: string, originalFilename: string): string {
  const explicit = path.extname(String(originalFilename || "").trim()).toLowerCase();
  if (explicit && explicit.length <= 8) return explicit;
  const low = String(contentType || "").trim().toLowerCase();
  if (low.includes("jpeg") || low.includes("jpg")) return ".jpg";
  if (low.includes("png")) return ".png";
  if (low.includes("gif")) return ".gif";
  if (low.includes("webp")) return ".webp";
  if (low.includes("bmp")) return ".bmp";
  if (low.includes("tiff")) return ".tiff";
  if (low.includes("mp4")) return ".mp4";
  if (low.includes("webm")) return ".webm";
  if (low.includes("quicktime") || low.includes("mov")) return ".mov";
  if (low.includes("pdf")) return ".pdf";
  if (low.includes("msword") || low.includes("wordprocessingml")) return ".docx";
  if (low.includes("spreadsheetml") || low.includes("ms-excel")) return ".xlsx";
  if (low.includes("presentationml") || low.includes("ms-powerpoint")) return ".pptx";
  if (low.includes("zip")) return ".zip";
  if (low.includes("gzip")) return ".gz";
  if (low.includes("json")) return ".json";
  if (low.includes("csv")) return ".csv";
  if (low.includes("plain")) return ".txt";
  if (low.includes("opus") || low.includes("ogg")) return ".ogg";
  if (low.includes("mpeg") || low.includes("mp3")) return ".mp3";
  if (low.includes("wav")) return ".wav";
  if (low.includes("m4a") || low.includes("mp4a")) return ".m4a";
  if (low.includes("aac")) return ".aac";
  return ".bin";
}

function isVoiceNote(m: proto.IMessage | null | undefined): boolean {
  const u = unwrapMessage(m);
  if (!u?.audioMessage) return false;
  return Boolean(u.audioMessage.ptt);
}

function mediaMimeFromMessage(m: proto.IMessage | null | undefined): string {
  const u = unwrapMessage(m);
  if (!u) return "";
  const raw = String(
    u.imageMessage?.mimetype ||
      u.videoMessage?.mimetype ||
      u.documentMessage?.mimetype ||
      u.audioMessage?.mimetype ||
      u.stickerMessage?.mimetype ||
      "",
  ).trim();
  if (raw) return raw;
  if (u.audioMessage) return isVoiceNote(m) ? "audio/ogg; codecs=opus" : "audio/mpeg";
  if (u.imageMessage || u.stickerMessage) return "image/jpeg";
  if (u.videoMessage) return "video/mp4";
  return "";
}

function mediaFileNameFromMessage(m: proto.IMessage | null | undefined): string {
  const u = unwrapMessage(m);
  if (!u) return "";
  const docName = String(u.documentMessage?.fileName || u.documentMessage?.title || "").trim();
  if (docName) return docName;
  if (u.audioMessage) return isVoiceNote(m) ? "voice.ogg" : "audio.mp3";
  if (u.imageMessage) return "image.jpg";
  if (u.videoMessage) return "video.mp4";
  if (u.stickerMessage) return "sticker.webp";
  return "";
}

function sanitizeFileName(name: string): string {
  const base = String(name || "").trim().replace(/[^\w.\-()+\u4e00-\u9fff]/g, "_");
  return base.slice(0, 120) || "attachment.bin";
}

function buildSavedFileName(params: {
  msgId: string;
  mime: string;
  originalName: string;
  ext: string;
}): string {
  const original = sanitizeFileName(params.originalName);
  if (original.includes(".")) return `${Date.now()}-${original}`;
  const ext = params.ext.startsWith(".") ? params.ext : `.${params.ext || "bin"}`;
  return `${Date.now()}-${params.msgId}${ext}`;
}

function resolveMediaKind(contentType: string | undefined, mime: string, m?: proto.IMessage | null): string | null {
  const t = String(contentType || "").trim();
  const mimeLower = String(mime || "").trim().toLowerCase();
  if (t === "imageMessage" || t === "stickerMessage") return "image";
  if (t === "videoMessage") return "video";
  if (t === "audioMessage") return isVoiceNote(m || null) ? "voice" : "file";
  if (t === "documentMessage") {
    if (mimeLower.startsWith("image/")) return "image";
    if (mimeLower.startsWith("video/")) return "video";
    if (mimeLower.startsWith("audio/")) return "file";
    return "file";
  }
  return null;
}

function hasInboundMedia(m: proto.IMessage | null | undefined): boolean {
  const u = unwrapMessage(m);
  if (!u) return false;
  return Boolean(u.imageMessage || u.videoMessage || u.documentMessage || u.audioMessage || u.stickerMessage);
}

async function withTimeout<T>(promise: Promise<T>, ms: number, label: string): Promise<T> {
  let timer: ReturnType<typeof setTimeout> | undefined;
  const timeout = new Promise<never>((_, reject) => {
    timer = setTimeout(() => reject(new Error(`${label} timeout after ${ms}ms`)), ms);
  });
  try {
    return await Promise.race([promise, timeout]);
  } finally {
    if (timer) clearTimeout(timer);
  }
}

async function downloadInboundAttachments(params: {
  sock: ReturnType<typeof makeWASocket>;
  msg: proto.IWebMessageInfo;
}): Promise<Json[]> {
  const inner = unwrapMessage(params.msg.message);
  if (!inner || !hasInboundMedia(params.msg.message)) return [];
  const contentType = getContentType(inner);
  const mime = mediaMimeFromMessage(params.msg.message) || "application/octet-stream";
  const kind = resolveMediaKind(contentType, mime, params.msg.message);
  if (!kind) return [];

  const msgId = String(params.msg.key?.id || "media").replace(/[^\w.-]/g, "_").slice(0, 32);
  const originalName = mediaFileNameFromMessage(params.msg.message);
  try {
    if (VERBOSE) log(`media download start id=${msgId} kind=${kind} mime=${mime} name=${originalName || "-"}`);
    const buffer = await withTimeout(
      downloadMediaMessage(
        params.msg,
        "buffer",
        {},
        { reuploadRequest: params.sock.updateMediaMessage },
      ),
      MEDIA_DOWNLOAD_TIMEOUT_MS,
      "whatsapp media download",
    );
    if (!buffer?.length) return [];
    if (MEDIA_MAX_BYTES > 0 && buffer.length > MEDIA_MAX_BYTES) {
      log(`media skip id=${msgId}: ${buffer.length} bytes exceeds max ${MEDIA_MAX_BYTES}`);
      return [];
    }
    const ext = extensionForMediaMessage(inner) || inferExtension(mime, originalName);
    const dir = path.join(STATE_DIR, "media", "inbound");
    ensureDir(dir);
    const savedName = buildSavedFileName({ msgId, mime, originalName, ext });
    const filePath = path.join(dir, savedName);
    await fs.promises.writeFile(filePath, buffer);
    if (VERBOSE) log(`media download done id=${msgId} bytes=${buffer.length} path=${filePath}`);
    return [
      {
        kind,
        local_path: filePath,
        mime,
        media_type: mime,
        name: originalName || savedName,
        filename: originalName || savedName,
      },
    ];
  } catch (err) {
    log(`media download failed id=${msgId} err=${String(err)}`);
    return [];
  }
}

function buildInboundPayload(params: {
  chatId: string;
  userId: string;
  text: string;
  raw: unknown;
  isGroup: boolean;
  mentions: string[];
  attachments?: Json[];
  groupName?: string;
  botJid?: string;
  botLid?: string;
  mentionsBot?: boolean;
}): Json {
  const metadata: Json = {
    source: "whatsapp_baileys",
    raw: params.raw,
    mentions_bot: params.mentionsBot === true,
  };
  if (params.groupName) metadata.group_name = params.groupName;
  if (params.botJid) metadata.bot_jid = params.botJid;
  if (params.botLid) metadata.bot_lid = params.botLid;
  if (params.mentions.length) metadata.mentioned_jids = params.mentions;
  const payload: Json = {
    channel: "whatsapp",
    account_id: ACCOUNT_ID,
    user_id: params.userId,
    chat_id: params.chatId,
    text: params.text,
    is_group: params.isGroup,
    mentions: params.mentions,
    metadata,
  };
  if (params.attachments?.length) payload.attachments = params.attachments;
  return payload;
}

function decodeBase64Payload(raw: string): { mime: string; data: Buffer } | null {
  const s = String(raw || "").trim();
  if (!s) return null;
  let mime = "application/octet-stream";
  let payload = s;
  const m = s.match(/^data:([^;,]+);base64,(.*)$/i);
  if (m) {
    mime = String(m[1] || mime).trim() || mime;
    payload = String(m[2] || "").trim();
  }
  try {
    const data = Buffer.from(payload.replace(/\s+/g, ""), "base64");
    if (!data.length) return null;
    return { mime, data };
  } catch {
    return null;
  }
}

function readReplyMetadata(reply: Json): Json {
  const meta = (reply as any).metadata;
  return meta && typeof meta === "object" ? (meta as Json) : {};
}

function readMentionJids(meta: Json): string[] {
  const raw = (meta as any).mention_jids ?? (meta as any).mentionJids;
  if (!Array.isArray(raw)) {
    const single = String((meta as any).reply_to_user_id || (meta as any).replyToUserId || "").trim();
    return single ? [single] : [];
  }
  return raw.map((j) => String(j || "").trim()).filter(Boolean);
}

function readMentionNames(meta: Json): string[] {
  const raw = (meta as any).mention_names ?? (meta as any).mentionNames;
  if (!Array.isArray(raw)) return [];
  return raw.map((n) => String(n || "").trim()).filter(Boolean);
}

function escapeRegExp(text: string): string {
  return String(text || "").replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
}

function mentionTokenForJid(jid: string): string {
  const local = jidBaseLocal(jid);
  return local ? `@${local}` : "";
}

function resolveOutboundMentionJids(
  sock: ReturnType<typeof makeWASocket> | null,
  chatId: string,
  mentionJids: string[],
): string[] {
  const isGroup = String(chatId || "").toLowerCase().endsWith("@g.us");
  const lidMapping = (sock as any)?.signalRepository?.lidMapping;
  const out: string[] = [];
  const seen = new Set<string>();

  const push = (jid: string) => {
    const j = String(jid || "").trim();
    if (!j) return;
    const key = jidBaseLocal(j);
    if (!key || seen.has(key)) return;
    seen.add(key);
    out.push(j);
  };

  for (let raw of mentionJids) {
    let jid = String(raw || "").trim();
    if (!jid) continue;

    if (!jid.includes("@") && /^\d+$/.test(jid)) {
      jid = `${jid}@lid`;
    }

    const low = jid.toLowerCase();
    if (low.endsWith("@lid")) {
      push(jid);
      continue;
    }

    if (isGroup && lidMapping && typeof lidMapping.getLIDForPN === "function") {
      try {
        const pn = low.includes("@s.whatsapp") ? jidNormalizedUser(jid) : jid;
        const lid = lidMapping.getLIDForPN(pn);
        if (lid) {
          push(String(lid));
          continue;
        }
      } catch {
        // ignore
      }
    }

    push(jid.includes("@") ? jid : jidNormalizedUser(jid));
  }
  return out;
}

function alignMentionTextWithJids(text: string, mentionJids: string[], mentionNames: string[]): string {
  let body = String(text || "").trim();
  const tokens = mentionJids.map((j) => mentionTokenForJid(j)).filter(Boolean);
  if (!tokens.length) return body;

  for (let i = 0; i < mentionJids.length; i++) {
    const token = tokens[i] || "";
    if (!token) continue;
    const name = String(mentionNames[i] || "").trim();
    if (name) {
      body = body.replace(new RegExp(`@${escapeRegExp(name)}(?=\\s|$|[，。！？!?,.])`, "gu"), token);
    }
  }

  const missing = tokens.filter((token) => !body.includes(token));
  if (missing.length) {
    body = body.replace(/^(@\S+\s*)+/, "").trim();
    body = `${missing.join(" ")} ${body}`.trim();
  }
  return body;
}

function decodeOutboundSource(raw: string): Json {
  const text = String(raw || "").trim();
  if (!text) return {};
  if (text.startsWith("{")) {
    try {
      const data = JSON.parse(text);
      return data && typeof data === "object" ? (data as Json) : {};
    } catch {
      return {};
    }
  }
  return { kind: text };
}

function isOutboundMentionTextReady(meta: Json): boolean {
  return Boolean((meta as any).mention_text_ready ?? (meta as any).mentionTextReady);
}

function buildMentionedOutboundText(
  body: string,
  meta: Json,
  sock?: ReturnType<typeof makeWASocket> | null,
  chatId?: string,
): { text: string; mentions?: string[] } {
  const trimmed = String(body || "").trim();
  if (!trimmed) return { text: trimmed };
  let mentionJids = readMentionJids(meta);
  if (!mentionJids.length) return { text: trimmed };

  const chat = String(chatId || "").trim();
  if (sock && chat) {
    mentionJids = resolveOutboundMentionJids(sock, chat, mentionJids);
  }

  const mentionNames = readMentionNames(meta);

  if (isOutboundMentionTextReady(meta)) {
    const aligned = alignMentionTextWithJids(trimmed, mentionJids, mentionNames);
    return { text: aligned, mentions: mentionJids };
  }
  const cleaned = trimmed
    .replace(/@\+?\d+(?:\s+\d+)*\s*/g, "")
    .replace(/@\S+\s*/g, "")
    .trim();
  const prefix = mentionJids.map((j) => mentionTokenForJid(j)).filter(Boolean).join(" ");
  const outText = prefix ? `${prefix} ${cleaned}`.trim() : trimmed;
  return { text: outText, mentions: mentionJids };
}

function buildOutboundSendContent(
  text: string,
  sourceRaw: string,
  sock?: ReturnType<typeof makeWASocket> | null,
  chatId?: string,
): { text: string; mentions?: string[] } {
  const meta = decodeOutboundSource(sourceRaw);
  return buildMentionedOutboundText(text, meta, sock, chatId);
}

function buildQuotedMessage(params: {
  chatId: string;
  stanzaId: string;
  participant: string;
  quoteText: string;
}): proto.IWebMessageInfo | undefined {
  const stanzaId = String(params.stanzaId || "").trim();
  const chatId = String(params.chatId || "").trim();
  if (!stanzaId || !chatId) return undefined;
  const participant = String(params.participant || "").trim();
  const quoteText = String(params.quoteText || "").trim() || "...";
  return {
    key: {
      remoteJid: chatId,
      fromMe: false,
      id: stanzaId,
      ...(participant ? { participant } : {}),
    },
    message: {
      conversation: quoteText,
    },
  } as proto.IWebMessageInfo;
}

function buildTextSendOptions(params: {
  deliverTo: string;
  text: string;
  reply: Json;
  sock?: ReturnType<typeof makeWASocket> | null;
}): { content: { text: string; mentions?: string[] }; quoted?: proto.IWebMessageInfo } {
  const meta = readReplyMetadata(params.reply);
  const content = buildMentionedOutboundText(params.text, meta, params.sock, params.deliverTo);

  const quoted = buildQuotedMessage({
    chatId: String((meta as any).quote_remote_jid || (meta as any).quoteRemoteJid || params.deliverTo).trim(),
    stanzaId: String((meta as any).quote_stanza_id || (meta as any).quoteStanzaId || "").trim(),
    participant: String((meta as any).quote_participant || (meta as any).quoteParticipant || "").trim(),
    quoteText: String((meta as any).quote_text || (meta as any).quoteText || "").trim(),
  });

  return quoted ? { content, quoted } : { content };
}

function shouldSendOutboundText(text: string): boolean {
  const t = String(text || "").trim();
  if (!t) return false;
  const normalized = t.toLowerCase().replace(/（/g, "(").replace(/）/g, ")");
  if (normalized === "(silent)" || normalized === "[silent]" || normalized === "no_reply" || normalized === "no reply" || normalized === "静默") {
    return false;
  }
  return true;
}

function guessMimeFromPath(filePath: string): string {
  const ext = path.extname(filePath).toLowerCase();
  const map: Record<string, string> = {
    ".jpg": "image/jpeg",
    ".jpeg": "image/jpeg",
    ".png": "image/png",
    ".gif": "image/gif",
    ".webp": "image/webp",
    ".mp4": "video/mp4",
    ".mov": "video/quicktime",
    ".webm": "video/webm",
    ".mp3": "audio/mpeg",
    ".ogg": "audio/ogg",
    ".wav": "audio/wav",
    ".m4a": "audio/mp4",
    ".pdf": "application/pdf",
    ".txt": "text/plain",
    ".csv": "text/csv",
    ".json": "application/json",
    ".doc": "application/msword",
    ".docx": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
    ".xls": "application/vnd.ms-excel",
    ".xlsx": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
    ".ppt": "application/vnd.ms-powerpoint",
    ".pptx": "application/vnd.openxmlformats-officedocument.presentationml.presentation",
    ".zip": "application/zip",
  };
  return map[ext] || "application/octet-stream";
}

function buildOutboundMediaMessage(params: {
  data: Buffer;
  mime: string;
  fileName: string;
  caption?: string;
  mentions?: string[];
}): Json {
  const mime = String(params.mime || "application/octet-stream").trim() || "application/octet-stream";
  const m = mime.toLowerCase();
  const caption = String(params.caption || "").trim();
  const captionOpt = caption ? { caption } : {};
  const mentionOpt = params.mentions?.length ? { mentions: params.mentions } : {};
  if (m.startsWith("image/")) {
    return { image: params.data as any, mimetype: mime, ...captionOpt, ...mentionOpt };
  }
  if (m.startsWith("video/")) {
    return { video: params.data as any, mimetype: mime, ...captionOpt, ...mentionOpt };
  }
  if (m.startsWith("audio/")) {
    return { audio: params.data as any, mimetype: mime, ...captionOpt, ...mentionOpt };
  }
  return {
    document: params.data as any,
    mimetype: mime,
    fileName: sanitizeFileName(params.fileName || "attachment.bin"),
    ...captionOpt,
    ...mentionOpt,
  };
}

async function sendReplyWithAttachments(params: {
  sock: ReturnType<typeof makeWASocket> | null;
  deliverTo: string;
  text: string;
  reply: Json;
}): Promise<void> {
  const s = params.sock;
  if (!s) return;
  const reply = params.reply || {};
  const outText = String(params.text || "").trim();
  const mediaPath = String((reply as any).media_path || (reply as any).mediaPath || "").trim();
  const mediaUrl = String((reply as any).media_url || (reply as any).mediaUrl || "").trim();
  const attachments = Array.isArray((reply as any).attachments) ? ((reply as any).attachments as Json[]) : [];
  const textOpts = buildTextSendOptions({
    deliverTo: params.deliverTo,
    text: outText,
    reply,
    sock: params.sock,
  });
  const sendOpts = textOpts.quoted ? { quoted: textOpts.quoted } : undefined;

  const sendMediaBuffer = async (data: Buffer, mime: string, fileName: string): Promise<boolean> => {
    if (!data.length) return false;
    const msg = buildOutboundMediaMessage({
      data,
      mime,
      fileName,
      caption: textOpts.content.text,
      mentions: textOpts.content.mentions,
    });
    await s.sendMessage(params.deliverTo, msg as any, sendOpts);
    return true;
  };

  const sendMediaRef = async (source: string): Promise<boolean> => {
    const src = String(source || "").trim();
    if (!src) return false;
    try {
      const data = await fs.promises.readFile(src);
      const mime = guessMimeFromPath(src);
      const fileName = path.basename(src);
      return await sendMediaBuffer(data, mime, fileName);
    } catch (err) {
      log(`send media file failed path=${src} err=${String(err)}`);
      return false;
    }
  };

  if (await sendMediaRef(mediaPath || mediaUrl)) return;

  for (const att of attachments) {
    if (!att || typeof att !== "object") continue;
    const raw = String(
      (att as any).data_base64 ||
        (att as any).media_base64 ||
        (att as any).image_base64 ||
        (att as any).video_base64 ||
        (att as any).audio_base64 ||
        (att as any).data ||
        "",
    ).trim();
    if (!raw) continue;
    const decoded = decodeBase64Payload(raw);
    if (!decoded) continue;
    const fileName = String((att as any).name || (att as any).filename || "attachment.bin");
    const mime = String((att as any).mime || (att as any).media_type || (att as any).mime_type || decoded.mime).trim() || decoded.mime;
    if (await sendMediaBuffer(decoded.data, mime, fileName)) return;
  }

  if (outText) {
    try {
      await s.sendMessage(
        params.deliverTo,
        textOpts.content as any,
        textOpts.quoted ? { quoted: textOpts.quoted } : undefined,
      );
    } catch (err) {
      log(`send reply failed (${String(err)}); retry plain text`);
      await s.sendMessage(params.deliverTo, { text: outText });
    }
  }
}

async function postInbound(payload: Json): Promise<Json> {
  const url = `${LOCAL_BASE_URL.replace(/\/+$/, "")}/inbound/whatsapp`;
  const res = await fetch(url, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify(payload),
  });
  const text = await res.text();
  if (!res.ok) {
    throw new Error(`inbound ${res.status}: ${text.slice(0, 300)}`);
  }
  return text ? (JSON.parse(text) as Json) : {};
}

async function pollOutboundQueue(sock: ReturnType<typeof makeWASocket>): Promise<void> {
  const url = `${LOCAL_BASE_URL.replace(/\/+$/, "")}/whatsapp/outbound/pending?account_id=${encodeURIComponent(ACCOUNT_ID)}`;
  try {
    const res = await fetch(url);
    if (!res.ok) return;
    const body = (await res.json()) as Json;
    const items = Array.isArray(body.items) ? (body.items as Json[]) : [];
    for (const item of items) {
      if (!item || typeof item !== "object") continue;
      const id = String((item as any).id || "").trim();
      const chatId = String((item as any).chat_id || "").trim();
      const text = String((item as any).text || "").trim();
      const source = String((item as any).source || "").trim();
      const attachments = Array.isArray((item as any).attachments) ? ((item as any).attachments as Json[]) : [];
      const mediaPath = String((item as any).media_path || (item as any).mediaPath || "").trim();
      const hasMedia = attachments.length > 0 || Boolean(mediaPath);
      if (!id || !chatId || (!text && !hasMedia)) continue;
      let ok = true;
      let err = "";
      try {
        let stanzaId = "";
        if (hasMedia) {
          const reply: Json = {
            attachments,
            metadata: decodeOutboundSource(source),
            ...(mediaPath ? { media_path: mediaPath } : {}),
          };
          await sendReplyWithAttachments({ sock, deliverTo: chatId, text, reply });
          log(
            `outbound sent id=${id} chat=${chatId} attachments=${attachments.length} mediaPath=${mediaPath ? "yes" : "no"} text=${text.slice(0, 80)}`,
          );
        } else {
          const meta = decodeOutboundSource(source);
          const content = buildMentionedOutboundText(text, meta, sock, chatId);
          const quoted = buildQuotedMessage({
            chatId: String((meta as any).quote_remote_jid || (meta as any).quoteRemoteJid || chatId).trim(),
            stanzaId: String((meta as any).quote_stanza_id || (meta as any).quoteStanzaId || "").trim(),
            participant: String((meta as any).quote_participant || (meta as any).quoteParticipant || "").trim(),
            quoteText: String((meta as any).quote_text || (meta as any).quoteText || "").trim(),
          });
          const sent = await sock.sendMessage(
            chatId,
            content as any,
            quoted ? { quoted } : undefined,
          );
          stanzaId = String((sent as any)?.key?.id || "").trim();
          log(
            `outbound sent id=${id} chat=${chatId} stanza=${stanzaId || "?"} mentions=${(content.mentions || []).length} mention0=${(content.mentions || [])[0] || ""} text=${content.text.slice(0, 80)}`,
          );
        }
        try {
          await fetch(`${LOCAL_BASE_URL.replace(/\/+$/, "")}/whatsapp/outbound/ack`, {
            method: "POST",
            headers: { "Content-Type": "application/json" },
            body: JSON.stringify({ id, ok, error: err, stanza_id: stanzaId }),
          });
        } catch {
          // best-effort ack
        }
      } catch (sendErr) {
        ok = false;
        err = String(sendErr);
        log(`outbound send failed id=${id} chat=${chatId} err=${err.slice(0, 160)}`);
        try {
          await fetch(`${LOCAL_BASE_URL.replace(/\/+$/, "")}/whatsapp/outbound/ack`, {
            method: "POST",
            headers: { "Content-Type": "application/json" },
            body: JSON.stringify({ id, ok, error: err }),
          });
        } catch {
          // best-effort ack
        }
      }
    }
  } catch (err) {
    if (VERBOSE) log(`outbound poll error: ${String(err)}`);
  }
}

function startOutboundPoller(getSock: () => ReturnType<typeof makeWASocket> | null): void {
  const intervalMs = Number(process.env.OCLAW_WHATSAPP_OUTBOUND_POLL_MS || "1000") || 1000;
  // Overlapping polls used to claim the same pending row twice (send → duplicate WhatsApp
  // bubbles) once inbound replies also went through the outbound queue.
  let pollInFlight = false;
  setInterval(() => {
    if (pollInFlight) return;
    const s = getSock();
    if (!s) return;
    pollInFlight = true;
    void pollOutboundQueue(s).finally(() => {
      pollInFlight = false;
    });
  }, Math.max(1000, intervalMs));
}

function sleep(ms: number): Promise<void> {
  return new Promise((r) => setTimeout(r, ms));
}

type TypingEntry = { refs: number; timer: ReturnType<typeof setInterval> | null };
const typingByChat = new Map<string, TypingEntry>();

async function sendTypingPresence(
  sock: ReturnType<typeof makeWASocket> | null,
  chatId: string,
  state: "composing" | "paused",
): Promise<void> {
  const s = sock;
  const jid = String(chatId || "").trim();
  if (!s || !jid || !TYPING_ENABLED) return;
  try {
    await s.sendPresenceUpdate(state, jid);
  } catch (err) {
    if (VERBOSE) log(`presence ${state} failed chat=${jid}: ${String(err).slice(0, 120)}`);
  }
}

function startTypingHeartbeat(sock: ReturnType<typeof makeWASocket> | null, chatId: string): void {
  const jid = String(chatId || "").trim();
  if (!sock || !jid || !TYPING_ENABLED) return;
  let entry = typingByChat.get(jid);
  if (!entry) {
    entry = { refs: 0, timer: null };
    typingByChat.set(jid, entry);
  }
  entry.refs += 1;
  if (entry.refs === 1) {
    void sendTypingPresence(sock, jid, "composing");
    entry.timer = setInterval(() => {
      void sendTypingPresence(sock, jid, "composing");
    }, TYPING_HEARTBEAT_MS);
  }
}

function stopTypingHeartbeat(sock: ReturnType<typeof makeWASocket> | null, chatId: string): void {
  const jid = String(chatId || "").trim();
  if (!jid || !TYPING_ENABLED) return;
  const entry = typingByChat.get(jid);
  if (!entry) return;
  entry.refs = Math.max(0, entry.refs - 1);
  if (entry.refs > 0) return;
  if (entry.timer) {
    clearInterval(entry.timer);
    entry.timer = null;
  }
  typingByChat.delete(jid);
  void sendTypingPresence(sock, jid, "paused");
}

function _ipLooksHijackedOrUnroutable(ip: string): boolean {
  const s = String(ip || "").trim();
  if (!s) return false;
  if (s.startsWith("198.18.") || s.startsWith("198.19.")) return true; // reserved benchmark range
  if (s.startsWith("0.") || s.startsWith("127.") || s.startsWith("10.")) return true;
  if (s.startsWith("192.168.") || s.startsWith("169.254.")) return true;
  if (/^172\.(1[6-9]|2\d|3[0-1])\./.test(s)) return true;
  return false;
}

const STALE_WA_BUILD = 1027934701;
const FALLBACK_WA_VERSION: [number, number, number] = [2, 3000, 1043857760];

function isUsableWaVersion(version: unknown): version is [number, number, number] {
  if (!Array.isArray(version) || version.length < 3) return false;
  const build = Number(version[2]);
  return Number.isFinite(build) && build > STALE_WA_BUILD;
}

async function proxyFetchInit(): Promise<Record<string, unknown>> {
  if (!PROXY_URL) return {};
  try {
    const undici = await import("node:undici");
    return { dispatcher: new undici.ProxyAgent(PROXY_URL) };
  } catch {
    return {};
  }
}

async function resolveWhatsAppVersion(): Promise<[number, number, number]> {
  const fromEnv = String(process.env.AIA_WHATSAPP_WA_VERSION || "").trim();
  if (fromEnv) {
    const parts = fromEnv.split(/[.,]/).map((n) => Number(n));
    if (isUsableWaVersion(parts)) {
      log(`wa version from AIA_WHATSAPP_WA_VERSION=${parts.join(".")}`);
      return [parts[0], parts[1], parts[2]];
    }
    log(`ignore invalid AIA_WHATSAPP_WA_VERSION=${fromEnv}`);
  }
  const fetchInit = await proxyFetchInit();
  try {
    const latest = await withTimeout(fetchLatestBaileysVersion(fetchInit as any), 8000, "fetchLatestBaileysVersion");
    if (isUsableWaVersion(latest.version)) {
      log(`wa version from Baileys master=${latest.version.join(".")} isLatest=${String(latest.isLatest)}`);
      return [latest.version[0], latest.version[1], latest.version[2]];
    }
    log(
      `fetchLatestBaileysVersion unusable version=${JSON.stringify(latest.version)} error=${String((latest as any).error || "")}`,
    );
  } catch (err) {
    log(`fetchLatestBaileysVersion failed: ${String(err)}`);
  }
  try {
    const web = await withTimeout(fetchLatestWaWebVersion(fetchInit as any), 8000, "fetchLatestWaWebVersion");
    if (isUsableWaVersion(web.version)) {
      log(`wa version from WhatsApp Web=${web.version.join(".")}`);
      return [web.version[0], web.version[1], web.version[2]];
    }
    log(`fetchLatestWaWebVersion unusable version=${JSON.stringify(web.version)}`);
  } catch (err) {
    log(`fetchLatestWaWebVersion failed: ${String(err)}`);
  }
  log(`wa version fallback=${FALLBACK_WA_VERSION.join(".")} (rc.9 default ${STALE_WA_BUILD} is rejected with 405)`);
  return FALLBACK_WA_VERSION;
}

async function logNetworkHints(): Promise<void> {
  try {
    const a = await dns.resolve4("web.whatsapp.com").catch(() => []);
    const aaaa = await dns.resolve6("web.whatsapp.com").catch(() => []);
    const sample = [...a, ...aaaa].slice(0, 6);
    if (sample.length > 0) {
      log(`dns web.whatsapp.com => ${sample.join(", ")}`);
      const bad = sample.find(_ipLooksHijackedOrUnroutable);
      if (bad) {
        log(
          `WARNING: DNS looks suspicious (e.g. ${bad}). This often causes WhatsApp Web handshake failures. Try switching system DNS (1.1.1.1/8.8.8.8) or check proxy/hosts rules.`,
        );
      }
    }
  } catch {
    // best-effort
  }
  const httpProxy = process.env.HTTP_PROXY || process.env.http_proxy || "";
  const httpsProxy = process.env.HTTPS_PROXY || process.env.https_proxy || "";
  if (httpProxy || httpsProxy) {
    log(`proxy env detected HTTP_PROXY=${httpProxy ? "set" : "unset"} HTTPS_PROXY=${httpsProxy ? "set" : "unset"}`);
  }
  if (PROXY_URL) {
    log(`proxy configured for Baileys via PROXY_URL=${PROXY_URL}`);
    try {
      fs.writeFileSync(path.join(STATE_DIR, "proxy.url"), PROXY_URL, "utf8");
    } catch {
      // ignore
    }
  }
}

function makeDeduper(params: { ttlMs: number; max: number }) {
  const seen = new Map<string, number>();
  const prune = (now: number): void => {
    for (const [k, ts] of seen) {
      if (now - ts > params.ttlMs) {
        seen.delete(k);
      }
    }
    if (seen.size <= params.max) return;
    const ordered = Array.from(seen.entries()).sort((a, b) => a[1] - b[1]);
    const drop = ordered.slice(0, Math.max(0, ordered.length - params.max));
    for (const [k] of drop) seen.delete(k);
  };
  return {
    has: (id: string): boolean => {
      const now = Date.now();
      prune(now);
      const ts = seen.get(id);
      return typeof ts === "number" && now - ts <= params.ttlMs;
    },
    add: (id: string): void => {
      const now = Date.now();
      seen.set(id, now);
      prune(now);
    },
  };
}

async function main(): Promise<void> {
  ensureDir(STATE_DIR);
  log(
    `runner booting local=${LOCAL_BASE_URL} stateDir=${STATE_DIR} verbose=${VERBOSE} node=${process.version} proxy=${PROXY_URL ? "set" : "unset"}`,
  );
  writeBridgeStatus(STATE_DIR, {
    connection: "connecting",
    me: "",
    phone: "",
    qr: "",
    qr_data_url: "",
    qr_png: "",
    last_error: "runner_starting",
    reconnect_attempt: 0,
    login_only: LOGIN_ONLY,
  });
  let { state, saveCreds } = await loadAuthState(STATE_DIR);
  const version = await resolveWhatsAppVersion();
  const dedupe = makeDeduper({ ttlMs: 10 * 60 * 1000, max: 20_000 });

  let reconnectAttempt = 0;
  let sock: ReturnType<typeof makeWASocket> | null = null;
  let cachedBotIdentityJids: string[] = [];
  const wsAgent = PROXY_URL ? new HttpsProxyAgent(PROXY_URL) : undefined;
  const groupNameCache = new Map<string, { name: string; ts: number }>();
  const GROUP_NAME_TTL_MS = 10 * 60 * 1000;
  const initialMe = String((state.creds as any)?.me?.id || "").trim();
  writeBridgeStatus(STATE_DIR, {
    connection: "connecting",
    me: initialMe ? jidNormalizedUser(initialMe) : "",
    phone: jidPhone(initialMe),
    qr: "",
    qr_data_url: "",
    qr_png: "",
    last_error: "",
    reconnect_attempt: 0,
    login_only: LOGIN_ONLY,
  });

  const resolveGroupName = async (chatId: string): Promise<string> => {
    const key = String(chatId || "").trim();
    if (!key) return "";
    const cached = groupNameCache.get(key);
    const now = Date.now();
    if (cached && now - cached.ts < GROUP_NAME_TTL_MS) return cached.name;
    const s = sock;
    if (!s) return cached?.name || "";
    try {
      const meta = await s.groupMetadata(key);
      const name = String(meta?.subject || "").trim();
      groupNameCache.set(key, { name, ts: now });
      return name;
    } catch {
      return cached?.name || "";
    }
  };

  const connectOnce = async () => {
    sock = makeWASocket({
      auth: state,
      browser: Browsers.windows("oclaw"),
      version,
      agent: wsAgent as any,
      printQRInTerminal: false,
      generateHighQualityLinkPreview: false,
    });

    sock.ev.on("creds.update", async () => {
      await saveCreds();
      const meId = sock?.user?.id ? String(sock.user.id) : "";
      const ids = collectBotIdentityJids(sock, meId, state.creds);
      if (ids.length) cachedBotIdentityJids = ids;
    });

    sock.ev.on("connection.update", async (update) => {
      if (update.qr) {
        reconnectAttempt = 0;
        log("QR received. Scan it from WhatsApp -> Linked devices.");
        printQrToTerminal(update.qr);
        const qrArt = await writeQrImage(STATE_DIR, update.qr);
        writeBridgeStatus(STATE_DIR, {
          connection: "qr",
          qr: String(update.qr || ""),
          qr_data_url: qrArt.dataUrl,
          qr_png: qrArt.pngPath ? path.basename(qrArt.pngPath) : "",
          last_error: "",
          last_disconnect_reason: "",
          last_disconnect_status: null,
          reconnect_attempt: reconnectAttempt,
          login_only: LOGIN_ONLY,
        });
      }
      if (update.connection === "open") {
        reconnectAttempt = 0;
        const me = sock?.user?.id ? jidNormalizedUser(sock.user.id) : "";
        const botIds = collectBotIdentityJids(sock, sock?.user?.id ? String(sock.user.id) : "", state.creds);
        cachedBotIdentityJids = botIds;
        log(`connected. me=${me || "unknown"} botIds=${botIds.join(",") || "none"} loginOnly=${LOGIN_ONLY}`);
        writeBridgeStatus(STATE_DIR, {
          connection: "open",
          me,
          phone: jidPhone(me),
          qr: "",
          qr_data_url: "",
          qr_png: "",
          last_error: "",
          last_disconnect_reason: "",
          last_disconnect_status: null,
          reconnect_attempt: 0,
          login_only: LOGIN_ONLY,
        });
        try {
          const qrPng = path.join(STATE_DIR, "qr.png");
          if (fs.existsSync(qrPng)) fs.unlinkSync(qrPng);
        } catch {
          // ignore
        }
        if (LOGIN_ONLY) {
          log("login-only mode: exiting after successful link.");
          process.exit(0);
        }
      }
      if (update.connection === "close") {
        const statusCode = (update.lastDisconnect?.error as any)?.output?.statusCode as number | undefined;
        const reason = statusCode ? (DisconnectReason as any)[statusCode] || String(statusCode) : "unknown";
        const errText = String(update.lastDisconnect?.error || "").slice(0, 200);
        log(`disconnected reason=${reason} statusCode=${String(statusCode || "")} err=${errText}`);
        const hasLinkedSession = Boolean(
          jidPhone(String((state.creds as any)?.me?.id || sock?.user?.id || "")),
        );
        if (statusCode === DisconnectReason.loggedOut) {
          log("logged out: delete data/channel_sidecar/whatsapp/state/auth to re-link.");
          writeBridgeStatus(STATE_DIR, {
            connection: "logged_out",
            qr: "",
            qr_data_url: "",
            qr_png: "",
            last_disconnect_reason: String(reason),
            last_disconnect_status: typeof statusCode === "number" ? statusCode : null,
            last_error: errText,
            reconnect_attempt: reconnectAttempt,
            login_only: LOGIN_ONLY,
          });
          return;
        }
        const rebindCodes = new Set<number>([
          DisconnectReason.forbidden,
          DisconnectReason.badSession,
          405,
        ]);
        if (hasLinkedSession && typeof statusCode === "number" && rebindCodes.has(statusCode)) {
          log(`session invalid statusCode=${statusCode}: clear state/auth and scan QR again.`);
          writeBridgeStatus(STATE_DIR, {
            connection: "needs_rebind",
            qr: "",
            qr_data_url: "",
            qr_png: "",
            last_disconnect_reason: String(reason),
            last_disconnect_status: statusCode,
            last_error: errText,
            reconnect_attempt: reconnectAttempt,
            login_only: LOGIN_ONLY,
          });
          return;
        }
        if (!hasLinkedSession && statusCode === 405) {
          reconnectAttempt += 1;
          log(`pairing 405: WhatsApp rejected this identity. Resetting auth keys attempt=${reconnectAttempt}`);
          writeBridgeStatus(STATE_DIR, {
            connection: "connecting",
            me: "",
            phone: "",
            qr: "",
            qr_data_url: "",
            qr_png: "",
            last_disconnect_reason: "405",
            last_disconnect_status: 405,
            last_error: "pairing_rejected_resetting_keys",
            reconnect_attempt: reconnectAttempt,
            login_only: LOGIN_ONLY,
          });
          try {
            sock?.end(undefined as any);
          } catch {
            // ignore
          }
          sock = null;
          try {
            fs.rmSync(resolveAuthDir(STATE_DIR), { recursive: true, force: true });
          } catch {
            // ignore
          }
          const fresh = await loadAuthState(STATE_DIR);
          state = fresh.state;
          saveCreds = fresh.saveCreds;
          await sleep(2000);
          await connectOnce();
          return;
        }
        reconnectAttempt += 1;
        writeBridgeStatus(STATE_DIR, {
          connection: hasLinkedSession ? "close" : "connecting",
          qr: "",
          qr_data_url: "",
          qr_png: "",
          last_disconnect_reason: String(reason),
          last_disconnect_status: typeof statusCode === "number" ? statusCode : null,
          last_error: errText,
          reconnect_attempt: reconnectAttempt,
          login_only: LOGIN_ONLY,
        });
        const base = hasLinkedSession
          ? Math.min(30_000, 1000 * Math.pow(2, Math.min(6, reconnectAttempt)))
          : 1500;
        const jitter = Math.floor(Math.random() * 500);
        const delay = base + jitter;
        log(`reconnecting in ${delay}ms attempt=${reconnectAttempt}`);
        await sleep(delay);
        await connectOnce();
      }
    });

    sock.ev.on("messages.upsert", async (upsert) => {
      const msgs = Array.isArray(upsert.messages) ? upsert.messages : [];
      for (const msg of msgs) {
        try {
          const key = msg.key;
          const id = String(key.id || "").trim();
          const remoteJid = String(key.remoteJid || "").trim();
          if (!id || !remoteJid) continue;
          if (isStatusOrBroadcastJid(remoteJid)) continue;
          if (key.fromMe) continue;
          if (dedupe.has(id)) continue;
          dedupe.add(id);

          const s = sock;
          if (!s) continue;

          const attachments = await downloadInboundAttachments({ sock: s, msg });
          const text = pickText(msg.message);
          if (!text && !attachments.length) continue;

          const isGroup = remoteJid.endsWith("@g.us");
          const participantRaw = String(key.participant || "").trim();
          const participantAlt = String((key as any).participantAlt || "").trim();
          const remoteJidAlt = String((key as any).remoteJidAlt || "").trim();
          const remoteJidNorm = jidNormalizedUser(remoteJid);
          const userId = isGroup
            ? resolveSenderJid(key) || remoteJidNorm
            : resolveDmUserJid(key, sock);
          const chatId = remoteJidNorm;
          const mentions = extractMentionsFromUpsert(msg);
          const quote = extractQuoteContext(msg.message);
          const botJidRaw = sock?.user?.id ? String(sock.user.id).trim() : "";
          const botJid = botJidRaw ? jidNormalizedUser(botJidRaw) : "";
          const botIdentityJids = Array.from(
            new Set([...cachedBotIdentityJids, ...collectBotIdentityJids(sock, botJidRaw, state.creds)]),
          );
          if (botIdentityJids.length > cachedBotIdentityJids.length) {
            cachedBotIdentityJids = botIdentityJids;
          }
          const botLid = pickBotLid(botIdentityJids);
          const mentionsBot = messageMentionsBot(sock, mentions, botJidRaw, botIdentityJids);
          const isReplyToBot = Boolean(
            botJidRaw &&
              quote.participant &&
              botIdentityJids.some((botId) => mentionMatchesBotIdentity(quote.participant, botId)),
          );

          const groupName = isGroup ? await resolveGroupName(chatId) : "";

          const raw = {
            id,
            remoteJid,
            remoteJidAlt: remoteJidAlt || null,
            participant: participantRaw || null,
            participantAlt: participantAlt || null,
            pushName: (msg as any).pushName || null,
            messageTimestamp: (msg as any).messageTimestamp || null,
            quotedParticipant: quote.participant || null,
            quotedStanzaId: quote.stanzaId || null,
            quotedText: quote.quotedText || null,
            isReplyToBot,
            mentionsBot,
            mentionedJids: mentions,
            botLid: botLid || null,
          };

          const inbound = buildInboundPayload({
            chatId,
            userId,
            text,
            raw,
            isGroup,
            mentions,
            attachments,
            groupName: groupName || undefined,
            botJid: botJidRaw || botJid || undefined,
            botLid: botLid || undefined,
            mentionsBot,
          });
          if (VERBOSE || isGroup) {
            log(
              `inbound group=${isGroup} chat=${chatId} user=${userId} mentions=${mentions.length} mentionsBot=${mentionsBot} replyToBot=${isReplyToBot} textLen=${text.length} attachments=${attachments.length} mention0=${mentions[0] || ""} botLid=${botLid || ""}`,
            );
          } else if (VERBOSE || attachments.length) {
            log(`inbound posting chat=${chatId} user=${userId} textLen=${text.length} attachments=${attachments.length}`);
          }
          startTypingHeartbeat(s, chatId);
          let out: Json = {};
          try {
            out = await postInbound(inbound);
          } finally {
            stopTypingHeartbeat(s, chatId);
          }
          const replies = Array.isArray(out.replies) ? (out.replies as Json[]) : [];
          const delivery = String((out as any).delivery || "").trim().toLowerCase();
          if (isGroup || VERBOSE || delivery === "queued" || delivery === "accepted_queued") {
            log(
              `inbound ok chat=${chatId} replies=${replies.length} delivery=${delivery || "sync"} outboundId=${String((out as any).outbound_message_id || "")}`,
            );
          }
          for (const r of replies) {
            const outText = String((r as any).text || "").trim();
            if (!shouldSendOutboundText(outText) && !(Array.isArray((r as any).attachments) && (r as any).attachments.length)) {
              if (VERBOSE) log(`skip outbound reply chat=${chatId} (nonsend text)`);
              continue;
            }
            const deliverTo = String((r as any).chat_id || chatId).trim() || chatId;
            await sendReplyWithAttachments({ sock, deliverTo, text: outText, reply: r });
          }
        } catch (err) {
          log(`handle message error: ${String(err)}`);
        }
      }
    });
  };

  log(
    `runner started local=${LOCAL_BASE_URL} stateDir=${STATE_DIR} verbose=${VERBOSE} node=${process.version} waVersion=${version.join(".")}`,
  );
  await logNetworkHints();
  startOutboundPoller(() => sock);
  await connectOnce();
}

void main();