require('dotenv').config();

const express = require('express');
const path = require('path');
const fs = require('fs');
const config = require('./api_v1/config');
const {
  startWsOutboxConsumer
} = require('./ws-server/ws-outbox-consumer');

const { jwtMiddleware } = require('./middleware/jwt');
const staticMiddleware = require('./middleware/static');

const {
  createWaitForCastSegment
} = require('./middleware/waitForCastSegment');
// removed old hls middleware
// const hlsMiddleware = require('./middleware/hls');

const authRouter = require('./routes/auth');
const configRouter = require('./routes/config');
const scanRouter = require('./routes/scan');
const autoScanRouter = require('./routes/autoScan');
const shareRouter = require('./routes/share');
const photosRouter = require('./routes/photos');
const activitiesRouter = require('./routes/activities');
const scanActivitiesRouter = require('./routes/scanActivities');
const scanStatusRouter = require('./routes/scanStatus');
const usersRouter = require('./routes/users');
const faceReviewRouter = require('./routes/faceReview');

// nuovo: router HLS che sta in routes/hls.js
const hlsRouter = require('./routes/hls');

const server = express();

// CORS per i flussi video HLS pubblici
server.use(['/hls', '/cast'], (req, res, next) => {
  res.setHeader('Access-Control-Allow-Origin', '*');
  res.setHeader('Access-Control-Allow-Methods', 'GET, HEAD, OPTIONS');
  res.setHeader(
    'Access-Control-Allow-Headers',
    'Origin, Accept, Content-Type, Range, Authorization'
  );
  res.setHeader(
    'Access-Control-Expose-Headers',
    'Content-Length, Content-Range, Accept-Ranges, Content-Type'
  );

  if (req.method === 'OPTIONS') {
    return res.sendStatus(204);
  }

  next();
});


/*
 * I manifest VOD anticipati possono fare riferimento a segmenti
 * che FFmpeg non ha ancora prodotto.
 *
 * Per le sole richieste /cast/.../segment_XXXXX.ts, il server
 * attende la comparsa del file invece di rispondere subito 404.
 *
 * Deve essere montato prima di express.static.
 */
const castRoot = path.resolve(
  __dirname,
  'public',
  'cast'
);

server.use(
  '/cast',
  createWaitForCastSegment({
    castRoot,

    // Attesa massima per un seek molto avanti.
    timeoutMs:
      Number(
        process.env.CAST_SEGMENT_WAIT_TIMEOUT_MS ||
        300000
      ),

    // Controlla la comparsa del file ogni 100 ms.
    pollMs:
      Number(
        process.env.CAST_SEGMENT_WAIT_POLL_MS ||
        100
      ),

    // Evita di servire un segmento ancora in scrittura.
    stabilityMs:
      Number(
        process.env.CAST_SEGMENT_STABILITY_MS ||
        50
      )
  })
);


// Statici pubblici (mantieni il tuo middleware statico)
server.use(staticMiddleware);

// Body parser (deve essere prima delle route che leggono JSON)
server.use(express.json());
server.use(express.urlencoded({ extended: true }));

// Base directory per gli output HLS (puoi sovrascriverla con env HLS_BASE)
const HLS_BASE = process.env.HLS_BASE || path.join(process.cwd(), 'hls_output');
fs.mkdirSync(HLS_BASE, { recursive: true });

// Serve i file HLS generati (master.m3u8 e .ts) pubblicamente su /hls
server.use('/hls', express.static(HLS_BASE));

// Login pubblico
server.get('/login', (req, res) => {
  res.sendFile(path.join(__dirname, 'public/login.html'));
});

// Rotte pubbliche
server.use('/auth', authRouter);
server.use('/config', configRouter);
//server.use('/share', shareRouter);

// JWT per tutto il resto (mantieni la tua regex)
server.use(
  /^(?!\/auth)(?!\/share)(?!\/login)(?!\/login.html)(?!\/css)(?!\/js)(?!\/img)(?!\/fonts)(?!\/favicon).*$/,
  jwtMiddleware
);

// Monta il router HLS dopo il jwtMiddleware in modo che le API siano protette
// GET statici /hls/ sono già serviti pubblicamente dalla express.static sopra

server.use('/hls', hlsRouter);

// Rotte protette
server.use('/share', shareRouter);
server.use('/users', usersRouter);
server.use('/face-review', faceReviewRouter);
server.use('/photos', photosRouter);
server.use('/activities', activitiesRouter);
server.use('/scan', scanRouter);
server.use('/scanActivities', scanActivitiesRouter);
server.use('/api_v1/auto_scan', autoScanRouter);
server.use('/scanStatus', scanStatusRouter);

// Home
server.get('/', (req, res) => {
  res.sendFile(path.resolve('public/index.html'));
});


server.listen(config.PORT, () => {
  console.log(`Server running on port ${config.PORT}`);

  // Solo il processo principale consuma la outbox e possiede
  // le connessioni WebSocket.
  startWsOutboxConsumer({
    pollMs: Number(process.env.WS_OUTBOX_POLL_MS || 250)
  });
});