import express from 'express'
import path from 'node:path'
import { fileURLToPath } from 'node:url'
import { config, assertServerConfig, WOMS_DATABASE_ID } from './config.js'
import { verifyDatabaseAccess } from './services/appwriteAdmin.js'
import { syncPreviewTls } from './services/previewDeploy.js'
import { sessionMiddleware } from './middleware/session.js'
import authRoutes from './routes/auth.js'
import projectsRoutes from './routes/projects.js'
import featuresRoutes from './routes/features.js'
import customerDataRoutes from './routes/customerData.js'
import portalAdminRoutes from './routes/portalAdmin.js'
import chatRoutes from './routes/chat.js'
import giteaWebhookRoutes from './routes/webhook/gitea.js'
import adminGiteaRoutes from './routes/admin/gitea.js'
import adminWebsiteProjectsRoutes from './routes/admin/websiteProjects.js'
import adminCustomersRoutes from './routes/admin/customers.js'
import adminEmployeesRoutes from './routes/admin/employees.js'
import adminInvoiceClientsRoutes from './routes/admin/invoiceClients.js'
import adminPreviewOpenRoutes from './routes/admin/previewOpen.js'

const __dirname = path.dirname(fileURLToPath(import.meta.url))
const publicDir = path.join(__dirname, '..', 'public')

assertServerConfig()

const app = express()
app.set('trust proxy', 1)
app.use(sessionMiddleware())
// rawBody wird fuer die HMAC-Verifikation des Gitea-Webhooks benoetigt
app.use(express.json({ limit: '2mb', verify: (req, _res, buf) => { req.rawBody = buf } }))

app.use((req, res, next) => {
  const origin = req.get('Origin')
  if (origin && config.cors.allowedOrigins.includes(origin)) {
    res.setHeader('Access-Control-Allow-Origin', origin)
    res.setHeader('Access-Control-Allow-Headers', 'Authorization, Content-Type')
    res.setHeader('Access-Control-Allow-Methods', 'GET, POST, PATCH, DELETE, OPTIONS')
    if (req.method === 'OPTIONS') {
      return res.sendStatus(204)
    }
  }
  return next()
})

app.use('/api/auth', authRoutes)
app.use('/api/projects', projectsRoutes)
app.use('/api/features', featuresRoutes)
app.use('/api', customerDataRoutes)
app.use('/api/chat', chatRoutes)
app.use('/api/portal-admin', portalAdminRoutes)
app.use('/api/admin/gitea', adminGiteaRoutes)
app.use('/api/admin/website-projects', adminWebsiteProjectsRoutes)
app.use('/api/admin/customers', adminCustomersRoutes)
app.use('/api/admin/employees', adminEmployeesRoutes)
app.use('/api/admin/invoice-clients', adminInvoiceClientsRoutes)
app.use('/api/admin/preview-open', adminPreviewOpenRoutes)
app.use('/webhook', giteaWebhookRoutes)

app.get('/api/health', async (_req, res) => {
  const dbAccess = await verifyDatabaseAccess()
  res.json({
    ok: dbAccess.ok,
    service: 'webklar-kundenbereich',
    databaseId: WOMS_DATABASE_ID,
    endpoint: config.appwrite.endpoint,
    appwriteDbAccess: dbAccess,
  })
})

app.use(express.static(publicDir))

app.get('/dashboard.html', (req, res, next) => {
  const raw = req.signedCookies?.[config.cookieName]
  if (!raw) {
    return res.redirect('/login.html')
  }
  next()
})

app.get('/', (_req, res) => {
  res.redirect('/login.html')
})

app.use((err, _req, res, _next) => {
  console.error('[server] Unbehandelter Fehler:', err)
  if (!res.headersSent) {
    res.status(500).json({ error: err.message || 'Interner Serverfehler' })
  }
})

const server = app.listen(config.port, '0.0.0.0', () => {
  console.log(`Webklar Kundenbereich läuft auf Port ${config.port}`)
  syncPreviewTls()
    .then((r) => console.log('[startup] Preview-TLS-Sync:', JSON.stringify(r)))
    .catch((err) => console.error('[startup] Preview-TLS-Sync fehlgeschlagen:', err.message))
  verifyDatabaseAccess().then((result) => {
    if (result.ok) return
    console.error(
      '[startup] APPWRITE_API_KEY: Kein Lesezugriff auf woms-database. In Appwrite Console neuen API-Key mit Scopes databases.read + databases.write anlegen und in .env eintragen.'
    )
    if (result.reason) console.error(`[startup] Appwrite: ${result.reason}`)
  })
})

server.on('error', (err) => {
  if (err.code === 'EADDRINUSE') {
    console.error(
      `[server] Port ${config.port} ist bereits belegt. Windows: netstat -ano | findstr :${config.port} → taskkill /PID <PID> /F. Oder in .env einen anderen PORT setzen (z. B. PORT=3002).`
    )
    process.exit(1)
  }
  throw err
})