/**
 * CF Pages Function — POST /api/webhook/telegram
 * MX14-E1: Edge Filtering — comandi semplici gestiti a CF (0 chiamate Railway).
 *
 * Flusso:
 *  1. Valida X-Telegram-Bot-Api-Secret-Token header
 *  2. Parse update Telegram
 *  3. Edge commands (/start /help /ping /stato): rispondi da CF o KV — return 200, no Railway
 *  4. Tutto il resto: return 200 subito, dispatch async a Railway (comportamento precedente)
 *     → fallisce? → accoda su Supabase telegram_queue
 *
 * Env bindings (CF Pages → Settings → Variables and Secrets):
 *   TELEGRAM_WEBHOOK_SECRET  — segreto impostato in setWebhook (header validation)
 *   TELEGRAM_BOT_TOKEN       — token bot (richiesto per risposte edge dirette)
 *   BACKEND_URL_A            — HF BRAIN/HANDS Space URL
 *                               BRAIN: https://arjanit98-terminal.hf.space (primario)
 *                               HANDS: https://baida07-ai-backend-collab.hf.space (esecuzione codice)
 *   BACKEND_URL              — Railway (legacy, non più nella critical path)
 *   INTERNAL_TOKEN           — token per autenticare CF → Railway
 *   SUPABASE_URL             — per fallback queue
 *   SUPABASE_SERVICE_KEY     — service role key (bypass RLS)
 *   AGENT_KV                 — KV namespace binding (id: 4db4874d2a9e49a9aed602697d8a5c45)
 *
 * MX14-E1 — comandi intercettati a edge (nessuna chiamata a Railway):
 *   /start  → risposta statica
 *   /help   → lista comandi
 *   /ping   → pong con latenza CF
 *   /stato  → stato da AGENT_KV (cache daemon) — fallback Railway se KV vuoto
 */
// --- CONFIGURAZIONE ARCHITETTURA 4 QUADRANTI (MX18-P0-FIX) ---
const QUADRANT_A = { 
  url: 'https://zwdoplodbdsxfrddoxmo.supabase.co', 
  key: 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6Inp3ZG9wbG9kYmRzeGZyZGRveG1vIiwicm9sZSI6InNlcnZpY2Vfcm9sZSIsImlhdCI6MTc3OTA1NjMwNSwiZXhwIjoyMDk0NjMyMzA1fQ.tGlgX4peRhWLhQmVd45tjqwiTvEFulOpplkmjkUSt9Y',
  role: 'BRAIN' 
};
const QUADRANT_B = { 
  url: 'https://sluvxtpbtxevrcooaqou.supabase.co', 
  key: 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6InpsdXZ4dHBidHhldnJjb29hcW91Iiwicm9sZSI6InNlcnZpY2Vfcm9sZSIsImlhdCI6MTc4MjA3Mjk5MiwiZXhwIjoyMDk3NjQ4OTkyfQ.WS4cpsvtO-FGkXukCqpFF6qXfQb38VUs5rtiLwa0khk',
  role: 'LOGS' 
};
const QUADRANT_C = { 
  project_id: 'a9ce05f8-aeca-46c1-837b-8c2ca7a11081', 
  token: '1edad57a-a9ee-4b47-8272-5e8003c02c9c', 
  role: 'QUEUE' 
};
const QUADRANT_D = { 
  project_id: '378eaeaa-ec8d-4833-9a7f-5f57f1f2e7ed', 
  token: '2f269320-0036-40c7-8ef6-f20bae855f4a', 
  role: 'FAILOVER' 
};


interface Env {
  TELEGRAM_WEBHOOK_SECRET: string;
  TELEGRAM_BOT_TOKEN: string;
  BACKEND_URL_A: string;  // HF BRAIN Space (arjanit98-terminal.hf.space) — no cold-start, always on
  BACKEND_URL: string;    // Railway (legacy — sostituito da BACKEND_URL_A nella critical path)
  INTERNAL_TOKEN: string;
  SUPABASE_URL: string;
  SUPABASE_SERVICE_KEY: string;
  OWNER_CHAT_IDS: string;   // CSV di chat_id autorizzati
  AGENT_KV: KVNamespace;
  OWNER_CHAT_IDS: string; // Chat ID autorizzati (virgola-separati) per comandi privilegiati
  GH_TOKEN_CF: string;    // PAT fine-grained con actions:write su Baida98/AI (per /logs)
  GH_TOKEN_D: string;     // PAT arypulka98-bot con actions:write su arypulka98-bot/AI (relay /run /deploy)
}

// ── Telegram API helpers ──────────────────────────────────────────────────────

async function tgSend(chatId: number, html: string, env: Env, replyMarkup?: unknown): Promise<void> {
  const token = env.TELEGRAM_BOT_TOKEN ?? '';
  if (!token) return; // bot token non configurato → edge silent, Railway gestirà
  await fetch(`https://api.telegram.org/bot${token}/sendMessage`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({
      chat_id: chatId, text: html, parse_mode: 'HTML',
      ...(replyMarkup ? { reply_markup: replyMarkup } : {}),
    }),
  }).catch(() => {});
}

/** Estrae il comando (es. "/start", "/help") dall'update Telegram. */
function extractCommand(update: Record<string, unknown>): string | null {
  const msg = update.message as Record<string, unknown> | undefined;
  const text = (msg?.text as string | undefined ?? '').trim();
  if (!text.startsWith('/')) return null;
  // Gestisce /cmd@BotName
  return text.split(/\s+/)[0].split('@')[0].toLowerCase();
}

function extractChatId(update: Record<string, unknown>): number | null {
  const msg = update.message as Record<string, unknown> | undefined;
  const chat = msg?.chat as Record<string, unknown> | undefined;
  return typeof chat?.id === 'number' ? chat.id : null;
}


// ── Argomenti messaggio ─────────────────────────────────────────────────────

/** Estrae il testo dopo il comando (es. "/run fai X" → "fai X"). */
function extractArgs(update: Record<string, unknown>): string {
  const msg = update.message as Record<string, unknown> | undefined;
  const text = (msg?.text as string | undefined ?? '').trim();
  return text.split(/\s+/).slice(1).join(' ').trim();
}

// ── Owner / autorizzazione ──────────────────────────────────────

/**
 * isOwner — verifica se chatId è nell'allowlist OWNER_CHAT_IDS.
 * Fail-CLOSED: OWNER_CHAT_IDS vuoto → nessuno è owner (sicurezza default).
 * IMPORTANTE: configurare OWNER_CHAT_IDS in CF Pages → Settings → Variables and Secrets.
 * Formato: "123456789" oppure "123456789,987654321" (più chat ID separati da virgola).
 */
function isOwner(chatId: number, env: Env): boolean {
  const raw = env.OWNER_CHAT_IDS ?? '';
  if (!raw.trim()) return false; // fail-closed: nessun accesso senza OWNER_CHAT_IDS configurato
  return raw.split(',').map(s => s.trim()).filter(Boolean).includes(String(chatId));
}

// ── GitHub API helpers (comandi privilegiati) ───────────────────────────────

/** Dispatch workflow_dispatch su Baida98/AI via GH_TOKEN_CF. */
async function ghDispatch(
  workflow: string,
  inputs: Record<string, string>,
  env: Env
): Promise<{ ok: boolean; msg: string }> {
  const token = env.GH_TOKEN_CF ?? '';
  if (!token) return { ok: false, msg: '⚠️ <b>GH_TOKEN_CF</b> non configurato in CF Pages.' };
  try {
    const r = await fetch(
      `https://api.github.com/repos/Baida98/AI/actions/workflows/${workflow}/dispatches`,
      {
        method: 'POST',
        headers: {
          Authorization: `Bearer ${token}`,
          'Content-Type': 'application/json',
          Accept: 'application/vnd.github.v3+json',
          'User-Agent': 'CF-Pages-TelegramBot/2.0',
        },
        body: JSON.stringify({ ref: 'main', inputs }),
        signal: AbortSignal.timeout(12_000),
      }
    );
    if (r.status === 204) return { ok: true, msg: '✅ Dispatch inviato (GitHub 204)' };
    const body = await r.text().catch(() => '');
    return { ok: false, msg: `❌ GitHub ${r.status}: ${body.slice(0, 120)}` };
  } catch (e) {
    return { ok: false, msg: `❌ Timeout: ${String(e).slice(0, 80)}` };
  }
}

/** Legge l'ultimo run di un workflow su Baida98/AI. */

/** Legge l'ultimo run di un workflow su arypulka98-bot/AI. */
async function ghRelayLastRun(workflow: string, env: Env): Promise<string> {
  const token = env.GH_TOKEN_D ?? env.GH_TOKEN_CF ?? '';
  if (!token) return '⚠️ GH_TOKEN_D/CF mancante';
  try {
    const r = await fetch(
      `https://api.github.com/repos/arypulka98-bot/AI/actions/workflows/${workflow}/runs?per_page=1`,
      {
        headers: {
          Authorization: `Bearer ${token}`,
          Accept: 'application/vnd.github.v3+json',
          'User-Agent': 'CF-Pages-TelegramBot/2.0',
        },
        signal: AbortSignal.timeout(10_000),
      }
    );
    if (!r.ok) return `❌ GitHub ${r.status}`;
    const j = await r.json() as { workflow_runs: Array<{ status: string; conclusion: string | null }> };
    const run = j.workflow_runs[0];
    if (!run) return '∅ mai eseguito';
    const status = run.status === 'completed' ? (run.conclusion === 'success' ? '✅' : '❌') : '⏳';
    return `${status} ${run.status}${run.conclusion ? ' (' + run.conclusion + ')' : ''}`;
  } catch {
    return '❌ Timeout GitHub API';
  }
}

async function ghLastRun(workflow: string, env: Env): Promise<string> {
  const token = env.GH_TOKEN_CF ?? '';
  if (!token) return '⚠️ GH_TOKEN_CF mancante';
  try {
    const r = await fetch(
      `https://api.github.com/repos/Baida98/AI/actions/workflows/${workflow}/runs?per_page=1`,
      {
        headers: {
          Authorization: `Bearer ${token}`,
          Accept: 'application/vnd.github.v3+json',
          'User-Agent': 'CF-Pages-TelegramBot/2.0',
        },
        signal: AbortSignal.timeout(10_000),
      }
    );
    if (!r.ok) return `❌ GitHub ${r.status}`;
    type RunObj = { status: string; conclusion: string | null; created_at: string };
    const j = await r.json() as { workflow_runs?: RunObj[] };
    const run = j.workflow_runs?.[0];
    if (!run) return '⚠️ Nessun run trovato';
    const icon = run.conclusion === 'success' ? '✅' : run.conclusion === 'failure' ? '❌' : '🔄';
    const when = run.created_at.slice(0, 16).replace('T', ' ') + ' UTC';
    return `${icon} <code>${run.status}/${run.conclusion ?? 'running'}</code> — ${when}`;
  } catch {
    return '❌ Timeout GitHub API';
  }
}

/** Dispatch repository_dispatch su arypulka98-bot/AI via GH_TOKEN_D (relay hub). */
async function ghRepoDispatch(
  eventType: string,
  payload: Record<string, string>,
  env: Env
): Promise<{ ok: boolean; msg: string }> {
  const token = env.GH_TOKEN_D ?? env.GH_TOKEN_CF ?? '';
  if (!token) return { ok: false, msg: '⚠️ <b>GH_TOKEN_D</b> non configurato in CF Pages → Settings → Secrets.' };
  try {
    const r = await fetch(
      'https://api.github.com/repos/arypulka98-bot/AI/dispatches',
      {
        method: 'POST',
        headers: {
          Authorization: `Bearer ${token}`,
          'Content-Type': 'application/json',
          Accept: 'application/vnd.github.v3+json',
          'User-Agent': 'CF-Pages-TelegramBot/2.0',
        },
        body: JSON.stringify({ event_type: eventType, client_payload: payload }),
        signal: AbortSignal.timeout(12_000),
      }
    );
    if (r.status === 204) return { ok: true, msg: '✅ Relay D: dispatch inviato (204)' };
    const body = await r.text().catch(() => '');
    return { ok: false, msg: `❌ Relay D: GitHub ${r.status}: ${body.slice(0, 120)}` };
  } catch (e) {
    return { ok: false, msg: `❌ Relay D: Timeout: ${String(e).slice(0, 80)}` };
  }
}

/** Dispatch workflow_dispatch su arypulka98-bot/AI via GH_TOKEN_D. */
async function ghRelayDispatch(
  workflow: string,
  inputs: Record<string, string>,
  env: Env
): Promise<{ ok: boolean; msg: string }> {
  const token = env.GH_TOKEN_D ?? '';
  if (!token) {
    // Fallback: Baida98/AI con GH_TOKEN_CF (minuti potrebbero essere esauriti)
    const r = await ghDispatch(workflow, inputs, env);
    return { ok: r.ok, msg: r.msg + '\n<i>⚠️ GH_TOKEN_D assente — usato account A (possibili minuti esauriti)</i>' };
  }
  try {
    const r = await fetch(
      `https://api.github.com/repos/arypulka98-bot/AI/actions/workflows/${workflow}/dispatches`,
      {
        method: 'POST',
        headers: {
          Authorization: `Bearer ${token}`,
          'Content-Type': 'application/json',
          Accept: 'application/vnd.github.v3+json',
          'User-Agent': 'CF-Pages-TelegramBot/2.0',
        },
        body: JSON.stringify({ ref: 'main', inputs }),
        signal: AbortSignal.timeout(12_000),
      }
    );
    if (r.status === 204) return { ok: true, msg: '✅ Relay D: dispatch inviato (204)' };
    const body = await r.text().catch(() => '');
    return { ok: false, msg: `❌ Relay D: GitHub ${r.status}: ${body.slice(0, 120)}` };
  } catch (e) {
    return { ok: false, msg: `❌ Relay D: Timeout: ${String(e).slice(0, 80)}` };
  }
}

/** Pinga i 3 HF Spaces e restituisce riga di stato ciascuno. */
async function pingHFSpaces(): Promise<string> {
  const spaces = [
    { name: 'BRAIN',  url: 'https://arjanit98-terminal.hf.space/health' },
    { name: 'HANDS',  url: 'https://baida07-ai-backend-collab.hf.space/health' },
    { name: 'MEMORY', url: 'https://baida07-ai-memory-backend.hf.space/health' },
  ];
  const results = await Promise.all(spaces.map(async (s) => {
    const t0 = Date.now();
    try {
      const r = await fetch(s.url, { signal: AbortSignal.timeout(15_000) });
      return `${r.ok ? '✅' : '⚠️'} <b>${s.name}</b>: ${r.status} (${Date.now() - t0}ms)`;
    } catch {
      return `❌ <b>${s.name}</b>: timeout (${Date.now() - t0}ms)`;
    }
  }));
  return results.join('\n');
}

// ── Edge command handlers ─────────────────────────────────────────────────────

const HELP_TEXT =
  '📋 <b>Comandi disponibili:</b>\n\n' +
  '<b>— Veloci (risposta istantanea) —</b>\n' +
  '/stato · /s — stato progetto (cache aggiornata ogni 5 min)\n' +
  '/ping — latenza server\n' +
  '/aiuto — questo menu\n\n' +
  '<b>— Avanzati (solo proprietario) —</b>\n' +
  '/run &lt;obiettivo&gt; — avvia Agent Kernel su GitHub Actions\n' +
  '/deploy — pubblica aggiornamento CF Pages\n' +
  '/logs — ultimi run e log di sistema\n' +
  '/hf — stato spazi HF (BRAIN / HANDS / MEMORY)\n\n' +
  '<i>💡 Scrivi qualsiasi obiettivo liberamente — lo eseguo senza comandi!</i>';

/**
 * handleEdgeCommand — gestisce i comandi semplici a CF senza passare da Railway.
 * @returns true se il comando è stato gestito → Railway NON va chiamato.
 *          false se serve Railway.
 */
async function handleEdgeCommand(
  cmd: string,
  chatId: number,
  update: Record<string, unknown>,
  env: Env,
  t0: number
): Promise<boolean> {
  switch (cmd) {
    case '/start':
      await tgSend(
        chatId,
        '🤖 <b>Agente AI</b> — Assistente autonomo per lo sviluppo\n\n' +
          'Scrivi il tuo obiettivo in italiano, liberamente.\n' +
          'Analizzo, codifico, faccio push e ti aggiorno in tempo reale.\n\n' +
          '💡 <i>es: «analizza i bug in providers.py» · «autofix degli errori»</i>\n\n' +
          'Cosa vuoi fare?',
        env,
        {
          inline_keyboard: [
            [{ text: '🚀 Nuovo Task', callback_data: 'agent' }, { text: '📊 Status', callback_data: 'tgw_status' }],
            [{ text: '🩺 Health', callback_data: 'tgw_health' }, { text: '🔧 AutoFix', callback_data: 'tgw_autofix' }],
            [{ text: '📊 Bench', callback_data: 'tgw_bench' }, { text: '📋 Tasks', callback_data: 'tgw_tasks' }],
            [{ text: '🌐 Dashboard', url: 'https://agente-ai.pages.dev' }],
          ],
        }
      );
      return true;

    case '/help':
    case '/aiuto':
    case '/menu':
      await tgSend(chatId, HELP_TEXT, env);
      return true;

    case '/ping':
      await tgSend(chatId, `🏓 <b>Pong!</b> CF Edge: <code>${Date.now() - t0}ms</code>`, env);
      return true;

    case '/stato':
    case '/s': {
      // Prova KV (stato cached dal daemon Railway ogni 5 min)
      if (env.AGENT_KV) {
        const cached = await env.AGENT_KV.get('stato:latest').catch(() => null);
        if (cached) {
          await tgSend(chatId, `⚡ <i>(KV cache)</i>\n${cached}`, env);
          return true; // gestito — Railway non necessario
        }
      }
      // KV vuoto o non disponibile → Railway gestisce (return false)
      return false;
    }


    case '/run': {
      const goal = extractArgs(update) || 'analizza stato progetto e aggiorna AGENT_PLAN';
      // Relay D (arypulka98-bot/AI) — usa budget D, non A (A esaurito fino al 1 luglio)
      // Richiede GH_TOKEN_D in CF Pages → Settings → Secrets.
      await tgSend(chatId, `🚀 <b>Agent Kernel → relay D</b> dispatching...\n<i>Goal: ${goal}</i>`, env);
      const r = await ghRelayDispatch('agent-kernel-b.yml', { goal, mode: 'execute', commit_memory: 'true' }, env);
      await tgSend(chatId,
        r.msg + '\n\n<a href="https://github.com/arypulka98-bot/AI/actions/workflows/agent-kernel-b.yml">→ Vedi run su relay D</a>',
        env
      );
      return true;
    }

    case '/deploy': {
      await tgSend(chatId, '🚀 <b>CF Pages Deploy</b> → relay D...', env);
      // MX11-G4: usa repository_dispatch diretto su relay D (nessun runner account A)
      const sha = await fetch('https://api.github.com/repos/Baida98/AI/commits/main', {
        headers: { Authorization: `Bearer ${env.GH_TOKEN_CF ?? ''}`, Accept: 'application/vnd.github.v3+json', 'User-Agent': 'CF-TGBot/2.0' },
        signal: AbortSignal.timeout(8_000),
      }).then(r => r.json()).then((j: Record<string, string>) => (j.sha ?? '').slice(0, 12)).catch(() => 'unknown');
      const r = await ghRepoDispatch('relay-deploy', { sha, source: 'telegram-deploy', force: 'true' }, env);
      await tgSend(chatId,
        r.msg + `\nSHA: <code>${sha}</code>\n\n<a href="https://github.com/arypulka98-bot/AI/actions">→ Vedi run su relay D</a>`,
        env
      );
      return true;
    }

        case '/logs': {
      await tgSend(chatId, '📊 Recupero ultimi run GHA...', env);
      const [cf, kb, be, rd] = await Promise.all([
        ghLastRun('cloudflare-deploy.yml', env),
        ghLastRun('agent-kernel-b.yml', env),
        ghLastRun('backend-deploy.yml', env),
        ghRelayLastRun('agent-kernel-b.yml', env),
      ]);
      await tgSend(chatId,
        '📊 <b>Ultimi run GHA:</b>\n\n' +
        '<b>[Baida98/AI]</b>\n' +
        '— CF Deploy: ' + cf + '\n' +
        '— Kernel B: ' + kb + '\n' +
        '— Backend: ' + be + '\n\n' +
        '<b>[Relay D]</b>\n' +
        '— Kernel D: ' + rd,
        env
      );
      return true;
    }

    case '/hf': {
      await tgSend(chatId, '🔍 Ping HF Spaces in corso (~15s)...', env);
      const status = await pingHFSpaces();
      await tgSend(chatId, '🤗 <b>HF Spaces status:</b>\n\n' + status, env);
      return true;
    }

    default:
      return false;
  }
}

// ── Railway dispatch (invariato rispetto a versione precedente) ───────────────

/**
 * dispatchToBrain — instrada l'update al HF BRAIN Space.
 * Sostituisce Railway: BRAIN gira 24/7 su HF free tier (no cold-start, no sleep).
 * Timeout 25s: HF può essere lento ma non si sveglia da zero.
 * Fallback: BACKEND_URL (Railway legacy) se BACKEND_URL_A non configurato.
 */
/** URL Spaces verificati live:
 *  BRAIN: arjanit98-terminal.hf.space      → /health 200, /api/telegram/process 200
 *  HANDS: baida07-ai-backend-collab.hf.space → /health 200
 *  BACKEND_URL_A punta a BRAIN (primario). HANDS come fallback esecuzione.
 */
const HF_BRAIN_URL = 'https://arjanit98-terminal.hf.space';
const HF_HANDS_URL = 'https://baida07-ai-backend-collab.hf.space';

async function dispatchToBrain(update: unknown, env: Env): Promise<boolean> {
  // Prova BRAIN prima, poi HANDS come fallback (entrambi live su HF free tier)
  const brainUrl = (env.BACKEND_URL_A ?? HF_BRAIN_URL).replace(/\/$/, '');
  for (const url of [brainUrl, HF_HANDS_URL]) {
    try {
      const res = await fetch(`${url}/api/telegram/process`, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          // BRAIN: accetta senza auth se TELEGRAM_WEBHOOK_SECRET non configurato
          'Authorization': `Bearer ${env.INTERNAL_TOKEN ?? ''}`,
          'User-Agent': 'CF-Pages-Webhook/2.0',
        },
        body: JSON.stringify(update),
        signal: AbortSignal.timeout(20_000),
      });
      if (res.ok) return true;
    } catch { /* prova url successivo */ }
  }
  return false;
}

async function queueToSupabase(update: unknown, env: Env): Promise<void> {
  const supabaseUrl = (env.SUPABASE_URL ?? '').replace(/\/$/, '');
  const supabaseKey = env.SUPABASE_SERVICE_KEY ?? '';
  if (!supabaseUrl || !supabaseKey) return;
  try {
    await fetch(`${supabaseUrl}/rest/v1/telegram_queue`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'apikey': supabaseKey,
        'Authorization': `Bearer ${supabaseKey}`,
        'Prefer': 'return=minimal',
      },
      body: JSON.stringify({
        update_id: (update as Record<string, unknown>)?.update_id ?? null,
        payload: JSON.stringify(update),
        processed: false,
      }),
    });
  } catch { /* fire-and-forget */ }
}

// ── Main handler ──────────────────────────────────────────────────────────────


/** true solo se il chatId è nella allowlist owner. */
function isOwner(chatId: number, env: Env): boolean {
  const list = (env.OWNER_CHAT_IDS ?? '').split(',').map((s) => s.trim()).filter(Boolean);
  return list.includes(String(chatId));
}

export const onRequestPost: PagesFunction<Env> = async (ctx) => {
  const t0 = Date.now();
  const secret = ctx.env.TELEGRAM_WEBHOOK_SECRET ?? '';

  // 1. Valida secret token header (se configurato)
  if (secret) {
    const headerSecret = ctx.request.headers.get('X-Telegram-Bot-Api-Secret-Token') ?? '';
    if (headerSecret !== secret) {
      return new Response('Unauthorized', { status: 401 });
    }
  }

  // 2. Parse body
  let update: Record<string, unknown>;
  try {
    update = await ctx.request.json() as Record<string, unknown>;
  } catch {
    return new Response('Bad Request', { status: 400 });
  }

  // 3. MX14-E1: Edge filtering — tenta gestione locale prima di Railway
  const cmd = extractCommand(update);
  const chatId = extractChatId(update);

  if (cmd && chatId !== null) {
    // Sicurezza: Blocca comandi se non è l'owner (eccetto /start e /help per privacy)
    const PUBLIC_CMDS = new Set(['/start', '/help', '/aiuto', '/menu', '/ping']);
    if (!PUBLIC_CMDS.has(cmd) && !isOwner(chatId, ctx.env)) {
      ctx.waitUntil(tgSend(chatId, '⚠️ <b>Accesso Negato.</b> Non sei autorizzato a usare questo comando.', ctx.env));
      return new Response('OK', { status: 200 });
    }

    const EDGE_CMDS = new Set(['/start', '/help', '/aiuto', '/menu', '/ping', '/stato', '/s', '/run', '/deploy', '/logs', '/hf']);
    if (EDGE_CMDS.has(cmd)) {
      // Edge command: return 200 subito, gestisci in background.
      // handleEdgeCommand → true: risposta inviata da CF, nessuna chiamata Railway.
      // handleEdgeCommand → false: KV miss (/stato cache vuota) → Railway gestisce.
      ctx.waitUntil(
        handleEdgeCommand(cmd, chatId, update, ctx.env, t0).then((handled) => {
          if (!handled) return dispatchToBrain(update, ctx.env).then((ok) => {
            if (!ok) return queueToSupabase(update, ctx.env);
          });
        })
      );
      return new Response('OK', { status: 200 });
    }
  }

  // 4. Comando non edge (o non-comando) → Railway come prima
  ctx.waitUntil(
    (async () => {
      const ok = await dispatchToBrain(update, ctx.env);
      if (!ok) await queueToSupabase(update, ctx.env);
    })()
  );

  return new Response('OK', { status: 200 });
};

// GET: health check (esteso con info edge)
export const onRequestGet: PagesFunction<Env> = async () =>
  new Response(
    JSON.stringify({
      ok: true,
      mode: 'webhook',
      edge_filter: 'MX14-E1',
      edge_commands: ['/start', '/help', '/ping', '/stato', '/s', '/run', '/deploy', '/logs', '/hf'],
      ts: Date.now(),
    }),
    { headers: { 'Content-Type': 'application/json' } }
  );


/** Invia log al Quadrante B (LOGS) in modo asincrono. */
async function logToQuadrantB(event: string, details: any) {
  try {
    await fetch(`${QUADRANT_B.url}/rest/v1/agent_logs`, {
      method: 'POST',
      headers: { 
        'apikey': QUADRANT_B.key, 
        'Authorization': `Bearer ${QUADRANT_B.key}`, 
        'Content-Type': 'application/json',
        'Prefer': 'return=minimal'
      },
      body: JSON.stringify({ event, details, created_at: new Date().toISOString() })
    });
  } catch (e) { /* silent fail per non bloccare edge */ }
}


/** Salva un frammento di esperienza nel Quadrante A (BRAIN). */
async function saveExperience(goal: string, outcome: string, env: Env) {
  try {
    await fetch(`${QUADRANT_A.url}/rest/v1/semantic_memory`, {
      method: 'POST',
      headers: { 
        'apikey': QUADRANT_A.key, 
        'Authorization': `Bearer ${QUADRANT_A.key}`, 
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({ 
        content: `Goal: ${goal} | Outcome: ${outcome}`,
        metadata: { source: 'manus-ai', ts: new Date().toISOString() }
      })
    });
  } catch (e) {}
}