"use strict";
(() => {
  const config   = window.__WOZ_CONFIG__ || {};
  const API_BASE = String(config.OS_URL || "").replace(/\/$/, "");

  const state = {
    health:      null,
    knownEntries: new Set(),
    entrySeq:    0,
    soundEnabled: false,
    audioContext: null,
  };

  const $ = (id) => document.getElementById(id);
  const el = {
    agentOrb:       $("agent-orb"),
    agentName:      $("agent-name"),
    agentState:     $("agent-state"),
    agentUptime:    $("agent-uptime"),
    agentLatency:   $("agent-latency"),
    agentNode:      $("agent-node"),
    agentVersion:   $("agent-version"),
    agentIntegrity: $("agent-integrity"),
    chainTerminal:  $("chain-terminal"),
    chainStatus:    $("chain-status"),
    chainTip:       $("chain-tip"),
    streamDot:      $("stream-dot"),
    immutableState: $("immutable-state"),
    entryCount:     $("entry-count"),
    raceList:       $("race-list"),
    raceSource:     $("race-source"),
    vectorHealth:   $("vector-health"),
    vectorRate:     $("vector-rate"),
    vectorLastSeal: $("vector-last-seal"),
    vectorApi:      $("vector-api"),
    soundToggle:    $("sound-toggle"),
    cmdHistory:     $("command-history"),
    magmaInput:     $("magma-input"),
    footerSession:  $("footer-session"),
    utcDate:        $("utc-date"),
    utcClock:       $("utc-clock"),
  };

  function api(path) { return `${API_BASE}${path}`; }

  async function request(path, options = {}, timeout = 8000) {
    const ctrl  = new AbortController();
    const timer = setTimeout(() => ctrl.abort(), timeout);
    try {
      const res  = await fetch(api(path), {
        ...options,
        signal: ctrl.signal,
        headers: {
          Accept: "application/json",
          ...(options.body ? { "Content-Type": "application/json" } : {}),
          ...options.headers,
        },
      });
      const body = await res.json().catch(() => ({}));
      if (!res.ok) throw new Error(body.message || body.error || `HTTP ${res.status}`);
      return body;
    } finally { clearTimeout(timer); }
  }

  function pick(obj, paths, fallback) {
    for (const p of paths) {
      const v = p.split(".").reduce((o, k) => o?.[k], obj);
      if (v !== undefined && v !== null) return v;
    }
    return fallback;
  }

  function formatUptime(v) {
    if (typeof v === "string") return v;
    const s = Math.max(0, v > 1_000_000 ? Math.floor(v / 1000) : Math.floor(Number(v || 0)));
    const h = String(Math.floor(s / 3600)).padStart(2, "0");
    const m = String(Math.floor((s % 3600) / 60)).padStart(2, "0");
    const r = String(s % 60).padStart(2, "0");
    return `${h}:${m}:${r}`;
  }

  function normalizeHealth(payload, latency) {
    const src    = payload.data || payload;
    const status = String(pick(src, ["status", "health", "state"], "online")).toLowerCase();
    const online = !["offline", "down", "error", "failed", "unhealthy"].includes(status);
    return {
      online,
      status:    online ? status.toUpperCase() : "OFFLINE",
      name:      String(pick(src, ["agent.name", "agentName", "name"], "CIPHER")),
      uptime:    formatUptime(pick(src, ["uptime", "system.uptime", "agent.uptime"], 0)),
      latency,
      node:      String(pick(src, ["node", "nodeId", "instance", "agent.node"], "OS-01")),
      version:   String(pick(src, ["version", "build.version", "agent.version"], "v2.2.0")),
      integrity: String(pick(src, ["integrity", "worm.integrity", "chain.integrity"], online ? "VERIFIED" : "UNVERIFIED")),
      agents:    normalizeAgents(pick(src, ["agents", "race", "agentRace", "metrics.agents"], [])),
    };
  }

  function normalizeAgents(raw) {
    if (!Array.isArray(raw) || raw.length === 0) return [];
    return raw.map(a => ({
      name:  String(a.name || a.agent || a.key || "AGENT").toUpperCase(),
      score: Math.min(100, Math.max(0, Number(a.score ?? a.value ?? a.decisions ?? 0))),
    }));
  }

  // ── Clock ──────────────────────────────────────────────────────────────────
  function tickClock() {
    const now = new Date();
    if (el.utcDate)  el.utcDate.textContent  = now.toISOString().slice(0, 10);
    if (el.utcClock) el.utcClock.textContent = now.toUTCString().slice(17, 25) + " UTC";
  }
  tickClock();
  setInterval(tickClock, 1000);

  // ── Health polling ─────────────────────────────────────────────────────────
  async function pollHealth() {
    const t0 = performance.now();
    try {
      const raw     = await request("/api/health");
      const latency = Math.round(performance.now() - t0);
      const h       = normalizeHealth(raw, latency);
      applyHealth(h);
    } catch {
      applyHealth({ online: false, status: "OFFLINE", latency: "—", uptime: "--:--:--",
                    node: "—", version: "—", integrity: "UNREACHABLE", agents: [] });
    }
  }

  function applyHealth(h) {
    state.health = h;

    if (el.agentOrb) {
      el.agentOrb.className = `agent-orb ${h.online ? "online" : "offline"}`;
    }
    if (el.agentName)  el.agentName.textContent  = h.name;
    if (el.agentState) {
      el.agentState.textContent = h.status;
      el.agentState.className   = `state ${h.online ? "online" : "offline"}`;
    }
    if (el.agentUptime)    el.agentUptime.textContent    = h.uptime;
    if (el.agentLatency)   el.agentLatency.textContent   = typeof h.latency === "number" ? `${h.latency} MS` : String(h.latency);
    if (el.agentNode)      el.agentNode.textContent      = h.node;
    if (el.agentVersion)   el.agentVersion.textContent   = h.version;
    if (el.agentIntegrity) el.agentIntegrity.textContent = h.integrity;

    // System vector
    if (el.vectorHealth)   el.vectorHealth.textContent   = h.online ? "NOMINAL" : "DEGRADED";
    if (el.vectorApi)      el.vectorApi.textContent      = h.online ? "ONLINE" : "OFFLINE";

    // Agent race
    if (h.agents.length > 0) renderRace(h.agents);
  }

  pollHealth();
  setInterval(pollHealth, 3000);

  // ── WORM chain polling ─────────────────────────────────────────────────────
  let chainPollRate = 0;
  async function pollChain() {
    const candidates = ["/api/worm/entries", "/api/agents/history", "/api/worm/tail"];
    let data = null;
    for (const path of candidates) {
      try { data = await request(path, {}, 5000); if (data) break; } catch {}
    }
    if (!data) return;

    const entries = Array.isArray(data) ? data : (data.entries ?? data.results ?? []);
    chainPollRate++;

    if (el.streamDot) el.streamDot.className = "stream-dot live";
    if (el.chainStatus) el.chainStatus.textContent = "STREAMING";

    let added = 0;
    for (const entry of entries.slice(-20)) {
      const id = entry.id ?? entry.worm_entry_id ?? entry.decision_seal ?? JSON.stringify(entry).slice(0, 32);
      if (state.knownEntries.has(id)) continue;
      state.knownEntries.add(id);
      state.entrySeq++;
      appendChainLine(entry, id);
      added++;
    }

    if (added > 0) {
      beep(880, 0.05);
      const tip = entries.at(-1);
      const hash = tip?.seal ?? tip?.decision_seal ?? tip?.worm_entry_id ?? "—";
      if (el.chainTip)    el.chainTip.textContent    = String(hash).slice(0, 16);
      if (el.entryCount)  el.entryCount.textContent  = String(state.knownEntries.size);
      if (el.immutableState) el.immutableState.textContent = "CONFIRMED";
      if (el.vectorLastSeal) el.vectorLastSeal.textContent = String(hash).slice(0, 12) + "…";
    }

    const evPerMin = Math.round(chainPollRate * 2);
    if (el.vectorRate) el.vectorRate.textContent = `${evPerMin}/MIN`;
  }

  function appendChainLine(entry, id) {
    const seq   = String(state.entrySeq).padStart(4, "0");
    const ts    = (entry.created_at ?? entry.timestamp ?? entry.ts ?? new Date().toISOString()).slice(11, 23);
    const actor = entry.agent ?? entry.actor ?? entry.source ?? "SYSTEM";
    const evt   = entry.event_type ?? entry.decision ?? entry.type ?? "SEAL";
    const hash  = (entry.seal ?? entry.decision_seal ?? id ?? "").slice(0, 12);

    const line = document.createElement("div");
    line.className = "chain-line new-entry";
    line.innerHTML = `
      <span class="seq">${seq}</span>
      <span class="ts">${ts}</span>
      <span class="event">${actor}·${evt}</span>
      <span class="hash">${hash}…</span>
    `;
    if (el.chainTerminal) {
      const boot = el.chainTerminal.querySelector(".boot-line");
      if (boot) boot.remove();
      el.chainTerminal.appendChild(line);
      el.chainTerminal.scrollTop = el.chainTerminal.scrollHeight;
    }
    if (state.soundEnabled) beep(440 + (state.entrySeq % 8) * 55, 0.04);
  }

  pollChain();
  setInterval(pollChain, 5000);

  // ── Agent race ─────────────────────────────────────────────────────────────
  const STATIC_AGENTS = ["CIPHER","VAULT","SENTINEL","ATLAS","ORACLE","FORGE","NOVA","LOC"];

  function renderRace(agents) {
    if (!el.raceList) return;
    const list = agents.length > 0 ? agents : STATIC_AGENTS.map((n, i) => ({ name: n, score: Math.floor(Math.random() * 60 + 20) }));
    el.raceList.innerHTML = list.map(a => `
      <div class="race-row">
        <span class="race-name">${a.name}</span>
        <div class="race-track"><div class="race-fill" style="width:${a.score}%"></div></div>
        <span class="race-score">${a.score}</span>
      </div>
    `).join("");
    if (el.raceSource) el.raceSource.textContent = agents.length > 0 ? "SOURCE: HEALTH API" : "SOURCE: STATIC";
  }

  renderRace([]);

  // ── Sound ──────────────────────────────────────────────────────────────────
  function beep(freq = 440, gain = 0.1) {
    if (!state.soundEnabled) return;
    try {
      state.audioContext = state.audioContext ?? new AudioContext();
      const o = state.audioContext.createOscillator();
      const g = state.audioContext.createGain();
      o.type  = "square";
      o.frequency.value = freq;
      g.gain.value = gain;
      o.connect(g);
      g.connect(state.audioContext.destination);
      o.start();
      g.gain.exponentialRampToValueAtTime(0.001, state.audioContext.currentTime + 0.08);
      o.stop(state.audioContext.currentTime + 0.08);
    } catch {}
  }

  if (el.soundToggle) {
    el.soundToggle.addEventListener("click", () => {
      state.soundEnabled = !state.soundEnabled;
      el.soundToggle.textContent    = `[ SOUND: ${state.soundEnabled ? "ON " : "OFF"} ]`;
      el.soundToggle.ariaPressed    = String(state.soundEnabled);
      if (state.soundEnabled) beep(660, 0.15);
    });
  }

  // ── Magma command line ─────────────────────────────────────────────────────
  function appendHistory(line, cls = "muted") {
    if (!el.cmdHistory) return;
    const span       = document.createElement("div");
    span.style.color = cls === "ok" ? "var(--green)" : cls === "err" ? "var(--danger)" : "var(--muted)";
    span.textContent = line;
    el.cmdHistory.appendChild(span);
    el.cmdHistory.scrollTop = el.cmdHistory.scrollHeight;
  }

  async function sendMagma() {
    if (!el.magmaInput) return;
    const cmd = el.magmaInput.value.trim();
    if (!cmd) return;
    el.magmaInput.value = "";
    appendHistory(`> ${cmd}`);
    try {
      const res = await request("/api/agents/ask", {
        method: "POST",
        body: JSON.stringify({ message: cmd, agent: "forge" }),
      }, 15000);
      const reply = res.reply ?? res.message ?? res.text ?? JSON.stringify(res);
      appendHistory(reply, "ok");
      beep(660, 0.1);
    } catch (err) {
      appendHistory(`ERR: ${err.message}`, "err");
    }
  }

  window.__wozSend = sendMagma;

  if (el.magmaInput) {
    el.magmaInput.addEventListener("keydown", e => {
      if (e.key === "Enter") { e.preventDefault(); sendMagma(); }
    });
  }

  // ── Footer session ─────────────────────────────────────────────────────────
  if (el.footerSession) {
    const id = Math.random().toString(36).slice(2, 10).toUpperCase();
    el.footerSession.textContent = `SESSION: ${id}`;
  }
})();