"use strict";

/**
 * ARIA Diagnostic Server
 *
 * Leichtgewichtiges Diagnose-Tool:
 * - Verbindet sich direkt mit OpenClaw Gateway (ws://127.0.0.1:18789)
 * - Fuehrt den vollstaendigen Handshake durch
 * - Sendet Testnachrichten und zeigt Antworten
 * - Zeigt Verbindungsstatus aller Komponenten
 *
 * Laeuft im selben Netzwerk wie aria-core (network_mode: service:aria)
 */

const http = require("http");
const { WebSocket, WebSocketServer } = require("ws");
const crypto = require("crypto");
const fs = require("fs");
const path = require("path");

// ── Konfiguration ───────────────────────────────────────
const HTTP_PORT = parseInt(process.env.DIAG_PORT || "3001", 10);
const GATEWAY_URL = process.env.ARIA_CORE_WS || "ws://127.0.0.1:18789";
const GATEWAY_TOKEN = process.env.ARIA_AUTH_TOKEN || "";
const RVS_HOST = process.env.RVS_HOST || "";
const RVS_PORT = process.env.RVS_PORT || "443";
const RVS_TLS = process.env.RVS_TLS || "true";
const RVS_TLS_FALLBACK = process.env.RVS_TLS_FALLBACK || "true";
const RVS_TOKEN = process.env.RVS_TOKEN || "";
const PROXY_URL = process.env.PROXY_URL || "http://proxy:3456";

// ── State ───────────────────────────────────────────────
const state = {
  gateway: { status: "disconnected", lastError: null, handshakeOk: false },
  rvs: { status: "disconnected", lastError: null },
  proxy: { status: "unknown", lastError: null },
};
const logs = [];
let gatewayWs = null;
let rvsWs = null;
let reqIdCounter = 0;
const browserClients = new Set();

// ── Pipeline Tracking ──────────────────────────────────
let pipelineActive = false;
let pipelineStartTime = 0;

function plog(message, level) {
  const elapsed = pipelineActive ? `+${Date.now() - pipelineStartTime}ms` : "";
  const entry = { ts: new Date().toISOString(), level: level || "info", source: "pipeline", message: `${elapsed ? `[${elapsed}] ` : ""}${message}` };
  logs.push(entry);
  if (logs.length > 500) logs.shift();
  console.log(`[PIPELINE] ${entry.message}`);
  broadcast({ type: "log", entry });
}

let pipelineTimeout = null;

function pipelineStart(method, text) {
  // Falls noch eine Pipeline laeuft, beenden
  if (pipelineActive) pipelineEnd(false, "Abgebrochen (neue Nachricht)");
  pipelineActive = true;
  pipelineStartTime = Date.now();
  if (pipelineTimeout) clearTimeout(pipelineTimeout);
  pipelineTimeout = setTimeout(() => {
    if (pipelineActive) pipelineEnd(false, "Timeout — keine Antwort nach 60s");
  }, 60000);
  plog(`━━━ Pipeline Start: ${method} ━━━`);
  plog(`Nachricht: "${text}"`);
}

function pipelineEnd(ok, detail) {
  if (!pipelineActive) return;
  if (pipelineTimeout) { clearTimeout(pipelineTimeout); pipelineTimeout = null; }
  const elapsed = Date.now() - pipelineStartTime;
  if (ok) {
    plog(`>>> Fertig (${elapsed}ms): ${detail}`);
  } else {
    plog(`>>> FEHLER (${elapsed}ms): ${detail}`, "error");
  }
  plog(`━━━ Pipeline Ende ━━━`);
  pipelineActive = false;
}

function nextReqId() {
  return `diag-${++reqIdCounter}`;
}

function log(level, source, message) {
  const entry = { ts: new Date().toISOString(), level, source, message };
  logs.push(entry);
  if (logs.length > 500) logs.shift();
  console.log(`[${entry.ts}] [${level}] [${source}] ${message}`);
  // An alle Browser-Clients senden
  broadcast({ type: "log", entry });
}

function broadcast(msg) {
  const data = JSON.stringify(msg);
  for (const client of browserClients) {
    if (client.readyState === WebSocket.OPEN) {
      client.send(data);
    }
  }
}

function broadcastState() {
  broadcast({ type: "state", state });
}

// ── OpenClaw Gateway Verbindung ─────────────────────────

async function connectGateway() {
  if (gatewayWs) {
    try { gatewayWs.close(); } catch (_) {}
    gatewayWs = null;
  }

  state.gateway.status = "connecting";
  state.gateway.handshakeOk = false;
  broadcastState();
  log("info", "gateway", `Verbinde: ${GATEWAY_URL}`);

  try {
    const ws = new WebSocket(GATEWAY_URL);

    await new Promise((resolve, reject) => {
      const timeout = setTimeout(() => {
        ws.close();
        reject(new Error("Verbindungs-Timeout (10s)"));
      }, 10000);

      ws.on("open", () => {
        clearTimeout(timeout);
        resolve();
      });

      ws.on("error", (err) => {
        clearTimeout(timeout);
        reject(err);
      });
    });

    log("info", "gateway", "TCP-Verbindung hergestellt — warte auf Challenge");

    // Schritt 1: Auf Challenge warten
    const challengeRaw = await waitForMessage(ws, 10000);
    const challenge = JSON.parse(challengeRaw);

    if (challenge.type !== "event" || challenge.event !== "connect.challenge") {
      throw new Error(`Unerwartete erste Nachricht: ${challengeRaw.slice(0, 200)}`);
    }

    const nonce = challenge.payload?.nonce || "";
    log("info", "gateway", `Challenge empfangen (nonce: ${nonce.slice(0, 8)}...)`);

    // Schritt 2: Connect Request senden
    const connectReq = {
      type: "req",
      id: nextReqId(),
      method: "connect",
      params: {
        minProtocol: 3,
        maxProtocol: 3,
        client: {
          id: "cli",
          version: "0.0.1",
          platform: "linux",
          mode: "cli",
        },
        role: "operator",
        scopes: ["operator.read", "operator.write"],
        caps: [],
        commands: [],
        permissions: {},
        auth: GATEWAY_TOKEN ? { token: GATEWAY_TOKEN } : {},
        locale: "de-DE",
        userAgent: "aria-diagnostic/0.0.1",
      },
    };

    ws.send(JSON.stringify(connectReq));
    log("info", "gateway", "Connect-Request gesendet");

    // Schritt 3: hello-ok warten
    const responseRaw = await waitForMessage(ws, 10000);
    const response = JSON.parse(responseRaw);

    if (response.type === "res" && response.ok) {
      log("info", "gateway", "Handshake erfolgreich — hello-ok!");
      state.gateway.status = "connected";
      state.gateway.handshakeOk = true;
      state.gateway.lastError = null;
    } else {
      const error = typeof response.error === "string"
        ? response.error
        : JSON.stringify(response.error || response).slice(0, 300);
      throw new Error(`Handshake fehlgeschlagen: ${error}`);
    }

    gatewayWs = ws;
    broadcastState();

    // Nachrichten-Loop — RAW logging fuer Debugging
    ws.on("message", (raw) => {
      try {
        const rawStr = raw.toString();
        log("debug", "gateway", `RAW <<< ${rawStr.slice(0, 300)}`);
        const msg = JSON.parse(rawStr);
        handleGatewayMessage(msg);
      } catch (err) {
        log("error", "gateway", `Parse-Fehler: ${err.message}`);
      }
    });

    ws.on("close", (code, reason) => {
      log("warn", "gateway", `Verbindung geschlossen (Code: ${code}, Reason: ${reason || "-"})`);
      state.gateway.status = "disconnected";
      state.gateway.handshakeOk = false;
      gatewayWs = null;
      broadcastState();
      // Auto-Reconnect nach 5s
      setTimeout(connectGateway, 5000);
    });

    ws.on("error", (err) => {
      log("error", "gateway", `WebSocket-Fehler: ${err.message}`);
      state.gateway.lastError = err.message;
      broadcastState();
    });

  } catch (err) {
    log("error", "gateway", `Fehler: ${err.message}`);
    state.gateway.status = "error";
    state.gateway.lastError = err.message;
    state.gateway.handshakeOk = false;
    gatewayWs = null;
    broadcastState();
    // Retry nach 5s
    setTimeout(connectGateway, 5000);
  }
}

// Extrahiert Text aus OpenClaw chat-Event message.content Array
function extractChatText(payload) {
  try {
    const content = payload.message?.content;
    if (Array.isArray(content)) {
      return content
        .filter(c => c.type === "text")
        .map(c => c.text || "")
        .join("");
    }
    if (typeof payload.message === "string") return payload.message;
    return payload.text || "";
  } catch { return ""; }
}

function handleGatewayMessage(msg) {
  if (msg.type === "res") {
    const status = msg.ok ? "OK" : `FEHLER: ${JSON.stringify(msg.error).slice(0, 100)}`;
    log("info", "gateway", `Response [${msg.id}]: ${status}`);
    if (pipelineActive) {
      if (msg.ok) plog(`Gateway ACK [${msg.id}] — Nachricht angenommen`);
      else plog(`Gateway NACK [${msg.id}] — ${JSON.stringify(msg.error).slice(0, 100)}`, "error");
    }
    broadcast({ type: "response", msg });
    return;
  }

  if (msg.type === "event") {
    const event = msg.event || "?";
    const payload = msg.payload || {};

    // ── agent Events: Streaming-Deltas vom LLM ──
    if (event === "agent") {
      const data = payload.data || {};
      const delta = data.delta || "";
      if (delta && payload.stream === "assistant") {
        broadcast({ type: "chat_delta", delta, payload });
      }
      // agent Events nicht einzeln loggen (zu viele)
      return;
    }

    // ── chat Events: Snapshots mit state=delta|final ──
    if (event === "chat") {
      const state = payload.state || "";
      const text = extractChatText(payload);

      if (state === "final") {
        log("info", "gateway", `ANTWORT: "${text.slice(0, 200)}"`);
        if (pipelineActive) pipelineEnd(true, `"${text.slice(0, 120)}"`);
        broadcast({ type: "chat_final", text, payload });
        return;
      }

      if (state === "delta") {
        // Periodischer Snapshot — nicht einzeln loggen
        return;
      }

      if (state === "error") {
        const error = payload.error || text || "Unbekannt";
        log("error", "gateway", `Chat-Fehler: ${error}`);
        if (pipelineActive) pipelineEnd(false, error);
        broadcast({ type: "chat_error", error, payload });
        return;
      }

      log("debug", "gateway", `chat state=${state}`);
      return;
    }

    // ── Legacy event names (chat:delta, chat:final, chat:error) ──
    if (event === "chat:delta") {
      const delta = payload.delta || payload.text || "";
      if (delta) broadcast({ type: "chat_delta", delta, payload });
      return;
    }
    if (event === "chat:final") {
      const text = extractChatText(payload) || payload.text || "";
      log("info", "gateway", `ANTWORT: "${text.slice(0, 200)}"`);
      if (pipelineActive) pipelineEnd(true, `"${text.slice(0, 120)}"`);
      broadcast({ type: "chat_final", text, payload });
      return;
    }
    if (event === "chat:error") {
      const error = payload.error || payload.message || "Unbekannt";
      log("error", "gateway", `Chat-Fehler: ${error}`);
      if (pipelineActive) pipelineEnd(false, error);
      broadcast({ type: "chat_error", error, payload });
      return;
    }

    // ── Andere Events (tick, health, presence) ──
    if (event === "tick" || event === "health") return; // Noise
    log("debug", "gateway", `Event: ${event}`);
  }
}

function sendToGateway(text, isPipeline) {
  if (!gatewayWs || gatewayWs.readyState !== WebSocket.OPEN) {
    log("error", "gateway", "Nicht verbunden — kann nicht senden");
    if (isPipeline) pipelineEnd(false, "Gateway nicht verbunden");
    return false;
  }

  const reqId = nextReqId();
  const msg = {
    type: "req",
    id: reqId,
    method: "chat.send",
    params: {
      sessionKey: "aria-diagnostic",
      message: text,
      idempotencyKey: crypto.randomUUID(),
    },
  };

  const payload = JSON.stringify(msg);
  log("debug", "gateway", `RAW >>> ${payload}`);
  gatewayWs.send(payload);
  log("info", "gateway", `chat.send [${reqId}]: "${text}"`);
  if (isPipeline) plog(`chat.send [${reqId}] an Gateway gesendet — warte auf ACK...`);
  return true;
}

// ── RVS Verbindung (optional) ───────────────────────────

function connectRVS(forcePlain) {
  if (!RVS_HOST || !RVS_TOKEN) {
    log("info", "rvs", "Nicht konfiguriert — ueberspringe");
    state.rvs.status = "not_configured";
    broadcastState();
    return;
  }

  // TLS-Logik: wss zuerst, bei Fehler Fallback auf ws (wenn erlaubt)
  const useTls = RVS_TLS === "true" && !forcePlain;
  const proto = useTls ? "wss" : "ws";
  const url = `${proto}://${RVS_HOST}:${RVS_PORT}?token=${RVS_TOKEN}`;

  state.rvs.status = "connecting";
  broadcastState();
  log("info", "rvs", `Verbinde: ${proto}://${RVS_HOST}:${RVS_PORT}`);

  const ws = new WebSocket(url);

  ws.on("open", () => {
    log("info", "rvs", `Verbunden (${proto})`);
    state.rvs.status = "connected";
    state.rvs.lastError = null;
    rvsWs = ws;
    broadcastState();
  });

  ws.on("message", (raw) => {
    try {
      const msg = JSON.parse(raw.toString());
      if (msg.type === "chat" && msg.payload) {
        const sender = msg.payload.sender || "?";
        log("info", "rvs", `Chat von ${sender}: "${(msg.payload.text || "").slice(0, 100)}"`);
        if (pipelineActive && sender !== "diagnostic") {
          pipelineEnd(true, `Antwort via RVS von ${sender}: "${(msg.payload.text || "").slice(0, 120)}"`);
        }
        broadcast({ type: "rvs_chat", msg });
      } else if (msg.type === "heartbeat") {
        // ignorieren
      } else {
        log("debug", "rvs", `Nachricht: ${JSON.stringify(msg).slice(0, 150)}`);
      }
    } catch {}
  });

  ws.on("close", () => {
    log("warn", "rvs", "Verbindung geschlossen");
    state.rvs.status = "disconnected";
    rvsWs = null;
    broadcastState();
    setTimeout(() => connectRVS(), 5000);
  });

  ws.on("error", (err) => {
    log("error", "rvs", `Fehler (${proto}): ${err.message}`);
    state.rvs.lastError = err.message;
    broadcastState();

    // TLS Fallback: wenn wss fehlschlaegt und Fallback erlaubt → ws versuchen
    if (useTls && RVS_TLS_FALLBACK === "true") {
      log("warn", "rvs", "TLS fehlgeschlagen — Fallback auf ws://");
      ws.removeAllListeners();
      try { ws.close(); } catch (_) {}
      connectRVS(true);
    }
  });
}

function sendToRVS(text, isPipeline) {
  if (!rvsWs || rvsWs.readyState !== WebSocket.OPEN) {
    log("error", "rvs", "Nicht verbunden");
    if (isPipeline) pipelineEnd(false, "RVS nicht verbunden");
    return false;
  }

  rvsWs.send(JSON.stringify({
    type: "chat",
    payload: { text, sender: "diagnostic" },
    timestamp: Date.now(),
  }));
  log("info", "rvs", `Gesendet via RVS: "${text}"`);
  if (isPipeline) plog(`Nachricht an RVS gesendet — warte auf Antwort via RVS...`);
  return true;
}

// ── Claude Proxy Test ────────────────────────────────────

async function testProxy(prompt) {
  state.proxy.status = "testing";
  state.proxy.lastError = null;
  broadcastState();
  log("info", "proxy", `Teste Proxy: ${PROXY_URL}`);

  try {
    // Schritt 1: Erreichbarkeit pruefen
    const healthUrl = `${PROXY_URL}/v1/models`;
    log("info", "proxy", `Rufe ab: ${healthUrl}`);

    const modelsRes = await fetch(healthUrl, {
      headers: { "Authorization": "Bearer not-needed" },
      signal: AbortSignal.timeout(10000),
    });

    if (!modelsRes.ok) {
      throw new Error(`Models-Endpoint: HTTP ${modelsRes.status} ${modelsRes.statusText}`);
    }

    const modelsData = await modelsRes.json();
    const models = (modelsData.data || []).map(m => m.id).filter(Boolean);
    log("info", "proxy", `Proxy erreichbar — ${models.length} Model(s) verfuegbar`);

    // Modellnamen loggen + OpenClaw-Config Hinweis
    if (models.length > 0) {
      log("info", "proxy", `Modelle: ${models.join(", ")}`);
      log("info", "proxy", `Fuer docker-compose.yml (DEFAULT_MODEL): ${models.map(m => m.replace("openai/", "")).join(" | ")}`);
    }

    // Schritt 1b: Auth-Dateien im Proxy-Container pruefen
    try {
      const authInfo = await dockerExec("aria-proxy", "echo '--- /root/.config/claude/ ---' && ls -la /root/.config/claude/ 2>&1 && echo '--- /root/.claude/ ---' && ls -la /root/.claude/ 2>&1 && echo '--- Credential-Dateien ---' && find /root/.config/claude /root/.claude -name '*.json' -o -name '*credential*' -o -name '*auth*' -o -name '*token*' 2>/dev/null | head -20");
      log("info", "proxy", `Auth-Dateien im Container:\n${authInfo}`);
      broadcast({ type: "proxy_auth", info: authInfo });
    } catch (authErr) {
      log("warn", "proxy", `Auth-Check fehlgeschlagen: ${authErr.message}`);
    }

    // Schritt 2: Chat Completion testen (kurzer Prompt)
    const testPrompt = prompt || "Antworte mit genau einem Wort: Ping";
    log("info", "proxy", `Sende Test-Prompt: "${testPrompt}"`);

    const chatRes = await fetch(`${PROXY_URL}/v1/chat/completions`, {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
        "Authorization": "Bearer not-needed",
      },
      body: JSON.stringify({
        model: "claude-sonnet-4-6",
        messages: [{ role: "user", content: testPrompt }],
        max_tokens: 200,
      }),
      signal: AbortSignal.timeout(30000),
    });

    if (!chatRes.ok) {
      const errBody = await chatRes.text().catch(() => "");
      throw new Error(`Chat-Completion: HTTP ${chatRes.status} — ${errBody.slice(0, 300)}`);
    }

    const chatData = await chatRes.json();
    const reply = chatData.choices?.[0]?.message?.content || "(leer)";
    log("info", "proxy", `Antwort: "${reply.slice(0, 200)}"`);

    state.proxy.status = "connected";
    state.proxy.lastError = null;
    state.proxy.models = models;
    broadcastState();
    broadcast({ type: "proxy_result", ok: true, reply, models });

  } catch (err) {
    log("error", "proxy", `Fehler: ${err.message}`);
    state.proxy.status = "error";
    state.proxy.lastError = err.message;
    broadcastState();
    broadcast({ type: "proxy_result", ok: false, error: err.message });
  }
}

// ── Claude Login im Proxy-Container ─────────────────────



// ── Interaktives Terminal (xterm.js ↔ Docker Exec) ──────

const net = require("net");

function attachTerminal(clientWs, containerName, cmd) {
  const createBody = JSON.stringify({
    AttachStdin: true, AttachStdout: true, AttachStderr: true, Tty: true,
    Cmd: Array.isArray(cmd) ? cmd : ["sh", "-c", cmd],
  });

  const createReq = http.request({
    socketPath: "/var/run/docker.sock",
    path: `/containers/${containerName}/exec`,
    method: "POST",
    headers: { "Content-Type": "application/json", "Content-Length": Buffer.byteLength(createBody) },
  }, (res) => {
    let data = "";
    res.on("data", (c) => data += c);
    res.on("end", () => {
      if (res.statusCode !== 201) {
        clientWs.send(JSON.stringify({ type: "term_error", error: `Exec create failed: HTTP ${res.statusCode}` }));
        return;
      }
      const execId = JSON.parse(data).Id;

      // Exec starten — raw TCP socket fuer bidirektionalen Stream
      // Docker Exec mit Tty macht ein HTTP Upgrade auf raw stream
      const startBody = JSON.stringify({ Detach: false, Tty: true });

      const sock = net.connect({ path: "/var/run/docker.sock" }, () => {
        // Raw HTTP Request senden (Upgrade-artig)
        const req = `POST /exec/${execId}/start HTTP/1.1\r\nHost: localhost\r\nContent-Type: application/json\r\nConnection: Upgrade\r\nUpgrade: tcp\r\nContent-Length: ${Buffer.byteLength(startBody)}\r\n\r\n${startBody}`;
        sock.write(req);
      });

      let headersParsed = false;
      let headerBuf = "";

      sock.on("data", (chunk) => {
        if (!headersParsed) {
          // HTTP Response Header parsen
          headerBuf += chunk.toString("utf-8");
          const headerEnd = headerBuf.indexOf("\r\n\r\n");
          if (headerEnd === -1) return; // Noch nicht komplett

          const headers = headerBuf.slice(0, headerEnd);
          const remaining = chunk.slice(chunk.length - (headerBuf.length - headerEnd - 4));

          headersParsed = true;

          if (!headers.includes("200") && !headers.includes("101")) {
            clientWs.send(JSON.stringify({ type: "term_error", error: `Exec start failed: ${headers.split("\r\n")[0]}` }));
            sock.end();
            return;
          }

          log("info", "proxy", "Terminal-Session gestartet");
          clientWs.send(JSON.stringify({ type: "term_ready" }));
          clientWs._termSock = sock;

          // Verbleibende Daten nach dem Header
          if (remaining.length > 0) {
            clientWs.send(JSON.stringify({ type: "term_data", data: remaining.toString("base64") }));
          }
          return;
        }

        // Tty=true: Rohdaten direkt durchreichen
        if (clientWs.readyState === WebSocket.OPEN) {
          clientWs.send(JSON.stringify({ type: "term_data", data: chunk.toString("base64") }));
        }
      });

      sock.on("end", () => {
        log("info", "proxy", "Terminal-Session beendet");
        if (clientWs.readyState === WebSocket.OPEN) {
          clientWs.send(JSON.stringify({ type: "term_exit" }));
        }
        clientWs._termSock = null;
        setTimeout(() => checkProxyAuth(), 1000);
      });

      sock.on("error", (err) => {
        log("error", "proxy", `Terminal-Socket-Fehler: ${err.message}`);
        if (clientWs.readyState === WebSocket.OPEN) {
          clientWs.send(JSON.stringify({ type: "term_error", error: err.message }));
        }
      });

      // Wenn Browser-Client disconnected, Socket schliessen
      clientWs.on("close", () => {
        if (sock && !sock.destroyed) sock.end();
      });
    });
  });
  createReq.on("error", (err) => {
    clientWs.send(JSON.stringify({ type: "term_error", error: err.message }));
  });
  createReq.write(createBody);
  createReq.end();
}

function handleTermInput(clientWs, data) {
  if (clientWs._termSock && !clientWs._termSock.destroyed) {
    clientWs._termSock.write(Buffer.from(data, "base64"));
  }
}

// Credentials manuell einfuegen (von einem Rechner wo Claude eingeloggt ist)
async function writeProxyCredentials(credentialsJson) {
  try {
    // Validieren
    const parsed = JSON.parse(credentialsJson);
    if (!parsed.claudeAiOauth && !parsed.oauth) {
      throw new Error("Ungueltig: Kein OAuth-Objekt gefunden. Erwartet 'claudeAiOauth' oder 'oauth' Key.");
    }

    log("info", "proxy", "Schreibe Credentials in Proxy-Container...");

    // Escaped fuer Shell — Einfache Anfuehrungszeichen im JSON escapen
    const escaped = credentialsJson.replace(/'/g, "'\\''");
    // In beide moegliche Speicherorte schreiben
    await dockerExec("aria-proxy", `mkdir -p /root/.config/claude && echo '${escaped}' > /root/.config/claude/.credentials.json && mkdir -p /root/.claude && echo '${escaped}' > /root/.claude/credentials.json`);

    log("info", "proxy", "Credentials geschrieben!");
    broadcast({ type: "login_status", status: "done" });
    broadcast({ type: "login_output", text: "Credentials erfolgreich geschrieben! Proxy muss neu gestartet werden." });

    // Auth pruefen
    setTimeout(() => checkProxyAuth(), 500);
  } catch (err) {
    log("error", "proxy", `Credentials schreiben fehlgeschlagen: ${err.message}`);
    broadcast({ type: "login_status", status: "error", error: err.message });
  }
}

async function checkProxyAuth() {
  try {
    log("info", "proxy", "Pruefe Auth-Dateien im Proxy-Container...");
    // Breit suchen: Claude Code speichert Credentials je nach Version an verschiedenen Orten
    const authInfo = await dockerExec("aria-proxy", `
      echo '=== /root/.config/claude/ ===' &&
      ls -la /root/.config/claude/ 2>&1 &&
      echo '' &&
      echo '=== /root/.claude/ ===' &&
      ls -la /root/.claude/ 2>&1 &&
      echo '' &&
      echo '=== /root/.claude/auth/ ===' &&
      ls -la /root/.claude/auth/ 2>&1 &&
      echo '' &&
      echo '=== Credentials-Dateien (rekursiv) ===' &&
      find /root/.config/claude /root/.claude -name '*.json' -o -name '*credential*' -o -name '*auth*' -o -name '*token*' -o -name '*oauth*' -o -name '*session*' 2>/dev/null | head -20 &&
      echo '' &&
      echo '=== .credentials.json ===' &&
      cat /root/.config/claude/.credentials.json 2>/dev/null || echo '(nicht in .config/claude/)' &&
      echo '' &&
      echo '=== /root/.claude/credentials.json ===' &&
      cat /root/.claude/credentials.json 2>/dev/null || echo '(nicht in .claude/)' &&
      echo '' &&
      echo '=== /root/.claude/auth/*.json ===' &&
      cat /root/.claude/auth/*.json 2>/dev/null || echo '(keine auth/*.json)'
    `.trim());
    log("info", "proxy", `Auth-Dateien:\n${authInfo}`);
    broadcast({ type: "proxy_auth", info: authInfo });
  } catch (err) {
    log("error", "proxy", `Auth-Check fehlgeschlagen: ${err.message}`);
    broadcast({ type: "proxy_auth", info: null, error: err.message });
  }
}

// ── OpenClaw Agent-Auth pruefen ──────────────────────────

async function checkCoreAuth() {
  try {
    log("info", "gateway", "Pruefe OpenClaw Agent-Konfiguration...");
    const info = await dockerExec("aria-core", `
      echo '=== Agent-Verzeichnis ===' &&
      ls -la /home/node/.openclaw/agents/main/agent/ 2>&1 &&
      echo '' &&
      echo '=== auth-profiles.json ===' &&
      cat /home/node/.openclaw/agents/main/agent/auth-profiles.json 2>/dev/null || echo '(nicht vorhanden)' &&
      echo '' &&
      echo '=== Umgebungsvariablen ===' &&
      echo "OPENAI_BASE_URL=$OPENAI_BASE_URL" &&
      echo "OPENAI_API_KEY=$(echo $OPENAI_API_KEY | head -c 15)..." &&
      echo "DEFAULT_MODEL=$DEFAULT_MODEL" &&
      echo '' &&
      echo '=== OpenClaw Version ===' &&
      openclaw --version 2>/dev/null || echo '(openclaw CLI nicht gefunden)' &&
      echo '' &&
      echo '=== Agents Liste ===' &&
      openclaw agents list 2>/dev/null || echo '(Befehl fehlgeschlagen)'
    `.trim());
    log("info", "gateway", `OpenClaw Config:\n${info}`);
    broadcast({ type: "core_auth", info });
  } catch (err) {
    log("error", "gateway", `Core-Auth-Check fehlgeschlagen: ${err.message}`);
    broadcast({ type: "core_auth", info: null, error: err.message });
  }
}

// ── Docker Container Logs ────────────────────────────────

const CONTAINER_MAP = {
  gateway: "aria-core",
  proxy: "aria-proxy",
  bridge: "aria-bridge",
};

function fetchDockerLogs(tab, tail) {
  const containerName = CONTAINER_MAP[tab];
  if (!containerName) return;

  const lines = parseInt(tail, 10) || 100;
  const dockerPath = `/containers/${containerName}/logs?stdout=true&stderr=true&tail=${lines}&timestamps=true`;

  return new Promise((resolve, reject) => {
    const req = http.request(
      { socketPath: "/var/run/docker.sock", path: dockerPath, method: "GET" },
      (res) => {
        const chunks = [];
        res.on("data", (chunk) => chunks.push(chunk));
        res.on("end", () => {
          // Docker log stream hat 8-byte Header pro Frame (stream type + size)
          const raw = Buffer.concat(chunks);
          const logLines = [];
          let offset = 0;
          while (offset < raw.length) {
            if (offset + 8 > raw.length) break;
            const size = raw.readUInt32BE(offset + 4);
            if (offset + 8 + size > raw.length) break;
            const line = raw.slice(offset + 8, offset + 8 + size).toString("utf-8").trimEnd();
            if (line) logLines.push(line);
            offset += 8 + size;
          }
          resolve(logLines);
        });
      }
    );
    req.on("error", (err) => reject(err));
    req.end();
  });
}

async function handleDockerLogs(ws, tab, tail) {
  const containerName = CONTAINER_MAP[tab];
  if (!containerName) {
    ws.send(JSON.stringify({ type: "docker_logs", tab, error: `Unbekannter Tab: ${tab}` }));
    return;
  }

  try {
    log("info", "server", `Lade Docker-Logs: ${containerName} (tail ${tail || 100})`);
    const lines = await fetchDockerLogs(tab, tail);
    ws.send(JSON.stringify({ type: "docker_logs", tab, container: containerName, lines }));
  } catch (err) {
    log("error", "server", `Docker-Logs Fehler (${containerName}): ${err.message}`);
    ws.send(JSON.stringify({ type: "docker_logs", tab, error: err.message }));
  }
}

// ── Docker Exec (Befehl in Container ausfuehren) ────────

function dockerExec(containerName, cmd) {
  return new Promise((resolve, reject) => {
    const createBody = JSON.stringify({
      AttachStdout: true, AttachStderr: true,
      Cmd: Array.isArray(cmd) ? cmd : ["sh", "-c", cmd],
    });

    const createReq = http.request({
      socketPath: "/var/run/docker.sock",
      path: `/containers/${containerName}/exec`,
      method: "POST",
      headers: { "Content-Type": "application/json", "Content-Length": Buffer.byteLength(createBody) },
    }, (res) => {
      let data = "";
      res.on("data", (c) => data += c);
      res.on("end", () => {
        if (res.statusCode !== 201) return reject(new Error(`Exec create: HTTP ${res.statusCode} — ${data.slice(0, 200)}`));
        const execId = JSON.parse(data).Id;

        // Exec starten
        const startBody = JSON.stringify({ Detach: false });
        const startReq = http.request({
          socketPath: "/var/run/docker.sock",
          path: `/exec/${execId}/start`,
          method: "POST",
          headers: { "Content-Type": "application/json", "Content-Length": Buffer.byteLength(startBody) },
        }, (sRes) => {
          const chunks = [];
          sRes.on("data", (c) => chunks.push(c));
          sRes.on("end", () => {
            // Docker multiplexed stream: 8-byte header pro Frame
            const raw = Buffer.concat(chunks);
            const lines = [];
            let offset = 0;
            while (offset < raw.length) {
              if (offset + 8 > raw.length) { lines.push(raw.slice(offset).toString("utf-8").trim()); break; }
              const size = raw.readUInt32BE(offset + 4);
              if (size === 0 || offset + 8 + size > raw.length) { lines.push(raw.slice(offset).toString("utf-8").trim()); break; }
              const line = raw.slice(offset + 8, offset + 8 + size).toString("utf-8").trimEnd();
              if (line) lines.push(line);
              offset += 8 + size;
            }
            resolve(lines.join("\n"));
          });
        });
        startReq.on("error", reject);
        startReq.write(startBody);
        startReq.end();
      });
    });
    createReq.on("error", reject);
    createReq.write(createBody);
    createReq.end();
  });
}

// ── Hilfsfunktionen ─────────────────────────────────────

function waitForMessage(ws, timeoutMs) {
  return new Promise((resolve, reject) => {
    const timeout = setTimeout(() => {
      reject(new Error(`Timeout (${timeoutMs}ms)`));
    }, timeoutMs);

    ws.once("message", (data) => {
      clearTimeout(timeout);
      resolve(data.toString());
    });
  });
}

// ── HTTP Server + WebSocket fuer Browser ────────────────

const htmlPath = path.join(__dirname, "index.html");

const server = http.createServer((req, res) => {
  if (req.url === "/" || req.url === "/index.html") {
    res.writeHead(200, { "Content-Type": "text/html; charset=utf-8" });
    res.end(fs.readFileSync(htmlPath, "utf-8"));
  } else if (req.url === "/api/state") {
    res.writeHead(200, { "Content-Type": "application/json" });
    res.end(JSON.stringify({ state, logs: logs.slice(-100) }));
  } else {
    res.writeHead(404);
    res.end("Not Found");
  }
});

const wss = new WebSocketServer({ server });

wss.on("connection", (ws) => {
  browserClients.add(ws);
  // Initialen State + letzte Logs senden
  ws.send(JSON.stringify({ type: "init", state, logs: logs.slice(-100) }));

  ws.on("message", (raw) => {
    try {
      const msg = JSON.parse(raw.toString());

      if (msg.action === "test_gateway") {
        pipelineStart("Gateway", msg.text || "aria lebst du noch?");
        sendToGateway(msg.text || "aria lebst du noch?", true);
      } else if (msg.action === "test_rvs") {
        pipelineStart("RVS", msg.text || "aria lebst du noch?");
        sendToRVS(msg.text || "aria lebst du noch?", true);
      } else if (msg.action === "reconnect_gateway") {
        connectGateway();
      } else if (msg.action === "reconnect_rvs") {
        connectRVS();
      } else if (msg.action === "test_proxy") {
        testProxy(msg.text);
      } else if (msg.action === "check_proxy_auth") {
        checkProxyAuth();
      } else if (msg.action === "proxy_login") {
        attachTerminal(ws, "aria-proxy", "claude login");
      } else if (msg.action === "core_terminal") {
        // Interaktive Shell in aria-core (fuer openclaw agents, etc.)
        attachTerminal(ws, "aria-core", msg.cmd || "sh");
      } else if (msg.action === "check_core_auth") {
        checkCoreAuth();
      } else if (msg.action === "term_input") {
        handleTermInput(ws, msg.data);
      } else if (msg.action === "write_credentials") {
        writeProxyCredentials(msg.credentials);
      } else if (msg.action === "docker_logs") {
        handleDockerLogs(ws, msg.tab, msg.tail);
      }
    } catch {}
  });

  ws.on("close", () => {
    browserClients.delete(ws);
  });
});

// ── Start ───────────────────────────────────────────────

server.listen(HTTP_PORT, "0.0.0.0", () => {
  log("info", "server", `Diagnostic Server laeuft auf http://0.0.0.0:${HTTP_PORT}`);
  log("info", "server", `Gateway: ${GATEWAY_URL}`);
  log("info", "server", `Token: ${GATEWAY_TOKEN ? GATEWAY_TOKEN.slice(0, 8) + "..." : "(keiner)"}`);
  log("info", "server", `RVS: ${RVS_HOST ? `${RVS_HOST}:${RVS_PORT}` : "(nicht konfiguriert)"}`);
  log("info", "server", `Proxy: ${PROXY_URL}`);

  // Verbindungen aufbauen
  connectGateway();
  connectRVS();
});