import 'dotenv/config';
import sqlite3 from 'sqlite3';
import path from 'node:path';
import fs from 'node:fs';

import { runSpaceCleanup } from './src/services/spaceCleanupService.js';
import { createWebhookProcessor } from './src/services/webhookProcessor.js';
import { initializeBot, stopBot } from './src/bot/index.js';
import { createApp, setupCron } from './src/server/app.js';
import { summarizeTicketDescription } from './src/integrations/xai/client.js';
import { WebexService } from './src/services/webexService.js';
import { getStaleWorkOrdersReport } from './src/services/staleWorkOrderReportService.js';

// ────────────────────────────────────────────────────────────────────────────────
// CONFIGURATION
// ────────────────────────────────────────────────────────────────────────────────
// Non-secret config only (server name/port, etc.). Secrets come exclusively from env.
// See src/config/index.js and src/config/secrets.js.
import nonSecretConfig from './src/config/index.js';
import { loadSecrets } from './src/config/secrets.js';
import { getDbPath } from './src/db/path.js';
import { ensureLogDir } from './src/utils/logPath.js';
import { getCollabSupportBase } from './src/integrations/collabSupport/client.js';

const secrets = loadSecrets();

const PORT = process.env.PORT || nonSecretConfig.server?.port || 1458;
// Use the shared resolver so index.js, src/db/path.js, and every downstream
// module agree on which file to open. Previously the fallback here (bot.db)
// disagreed with .env.example (webex_sc_mappings.db), which meant a missing
// DB_PATH env var would silently spawn a brand-new empty database.
const DB_PATH = getDbPath();

// Ensure runtime directories exist early. Log dir goes through the shared
// resolver (LOG_DIR env, default ./logs) so mounts, cleanup, and every logger
// call agree on one location.
const dataDir = path.dirname(DB_PATH);
if (!fs.existsSync(dataDir)) {
  fs.mkdirSync(dataDir, { recursive: true });
}
const logsDir = ensureLogDir();
console.log(`[boot] Logs → ${logsDir}`);
const csBase = getCollabSupportBase();
if (csBase) {
  console.log(`[boot] CollabSupport → ${csBase}${process.env.CS_API_BASE_INTERNAL ? ' (internal)' : ''}`);
}

// Build webexConfig for the Framework:
// - Token (and baseUrl) ALWAYS come from secrets/env (never baked into config.json or image).
// - Other fields (name, email, wbx_base_url) can still come from a (clean) config.json for compatibility.
const baseWebex = nonSecretConfig.auth?.webex || nonSecretConfig.webex || {};
const webexConfig = {
  ...baseWebex,
  token: secrets.webex.token, // force from env
  baseUrl: secrets.webex.baseUrl || baseWebex.wbx_base_url || baseWebex.baseUrl || 'https://webexapis.com/v1',
  wbx_base_url: baseWebex.wbx_base_url || secrets.webex.baseUrl || 'https://webexapis.com/v1',
};

// ────────────────────────────────────────────────────────────────────────────────
// SQLite Database
// (Production DB file location is sacred — see REFACTOR-LOG.md)
const db = new sqlite3.Database(DB_PATH);

db.serialize(() => {
  db.run(`
    CREATE TABLE IF NOT EXISTS mappings (
      workOrderId INTEGER PRIMARY KEY,
      roomId TEXT UNIQUE NOT NULL
    )
  `);
  db.run(`
    CREATE TABLE IF NOT EXISTS posted_attachments (
      workOrderId INTEGER NOT NULL,
      attachmentId INTEGER NOT NULL,
      postedAt TEXT NOT NULL,
      PRIMARY KEY (workOrderId, attachmentId)
    )
  `);
  db.run(`
    CREATE TABLE IF NOT EXISTS pending_approval_cards (
      workOrderId INTEGER PRIMARY KEY,
      roomId TEXT NOT NULL,
      messageId TEXT NOT NULL,
      proposalId INTEGER,
      postedAt TEXT NOT NULL
    )
  `);
  db.run(`
    CREATE TABLE IF NOT EXISTS pending_invoice_approval_cards (
      workOrderId INTEGER PRIMARY KEY,
      roomId TEXT NOT NULL,
      messageId TEXT NOT NULL,
      invoiceId INTEGER,
      postedAt TEXT NOT NULL
    )
  `);
  db.run(`
    CREATE TABLE IF NOT EXISTS space_cleanup_digest (
      id INTEGER PRIMARY KEY CHECK (id = 1),
      lastPostedAt TEXT NOT NULL
    )
  `);
  db.run(`
    CREATE TABLE IF NOT EXISTS wo_closeouts (
      workOrderId INTEGER PRIMARY KEY,
      confirmedAt TEXT NOT NULL,
      confirmedBy TEXT NOT NULL,
      scStatusUpdated INTEGER NOT NULL DEFAULT 0,
      noteText TEXT
    )
  `);
  console.log(`[DB] Connected to ${DB_PATH}`);
});

// ────────────────────────────────────────────────────────────────────────────────
// Core Webhook Processor (extracted logic — see src/services/webhookProcessor.js)
// We pass the existing db instance so we never create a second connection or touch
// the production DB file location.
// ────────────────────────────────────────────────────────────────────────────────
const hardcodedTeamId = 'Y2lzY29zcGFyazovL3VzL1RFQU0vMmI3MTJhZjAtZjc5NS0xMWYwLTk4MDYtYjczNjhlY2UzNjQx';
const defaultMembers = [
  "mcqueenj@ae.com",
  "bollandd@ae.com",
  "ferrerij@ae.com",
  "wagurakj@ae.com",
  "karpuszkav@ae.com"
];

// Wrapper for the initial description summarizer used on WorkOrderCreated events.
// Prefer token passed in or from secrets (xai); fall back to legacy config only for transition.
async function summarizeForNewWO(rawDescription, token, opts = {}) {
  const xaiToken = token || secrets.xai?.token || baseWebex.xai?.token;
  return summarizeTicketDescription(rawDescription, xaiToken, opts);
}

// Webex service provides a thin, ServChan-aware layer over the raw bot client.
// This improves isolation and testability of the webhook processor.
const webexService = new WebexService();

const webhookProcessor = createWebhookProcessor({
  db,
  webex: webexService,
  summarizeDescription: summarizeForNewWO,
  teamId: hardcodedTeamId,
  defaultMembers,
});

// ────────────────────────────────────────────────────────────────────────────────
// Webex Bot (Framework + commands)
// ────────────────────────────────────────────────────────────────────────────────
const Framework = initializeBot({
  webexConfig,
});

// ────────────────────────────────────────────────────────────────────────────────
// Cron + Express App (extracted)
// ────────────────────────────────────────────────────────────────────────────────
setupCron({ db, runSpaceCleanup });

const app = createApp({
  db,
  DB_PATH,
  webhookProcessor,
  runSpaceCleanup,
  Framework,
  getStaleWorkOrdersReport: (db) => getStaleWorkOrdersReport(db),
});

// ────────────────────────────────────────────────────────────────────────────────
// Start server (thin bootstrap)
// ────────────────────────────────────────────────────────────────────────────────
app.listen(PORT, () => {
  console.log(`${nonSecretConfig.server?.name || 'ServChan'} → Webex webhook receiver running on port ${PORT}`);
});

// Graceful shutdown (handles both local Ctrl-C and Docker/K8s SIGTERM)
function shutdown(signal) {
  console.log(`[shutdown] Received ${signal}, stopping...`);
  stopBot(Framework).then(() => {
    try { db.close(); } catch (_) {}
    process.exit(0);
  }).catch(() => process.exit(0));
}
process.on('SIGINT', () => shutdown('SIGINT'));
process.on('SIGTERM', () => shutdown('SIGTERM'));