import express from 'express'
import cors from 'cors'
import path from 'path'
import { fileURLToPath } from 'url'
import fs from 'fs'
import sitesRouter from './routes/sites.js'
import authRouter from './routes/auth.js'
import proxyRouter from './routes/proxy.js'
import billingRouter from './routes/billing.js'
import { ensureChineseFont } from './utils/font.js'

const app = express()
const PORT = Number(process.env.PORT) || 3001
const __dirname = path.dirname(fileURLToPath(import.meta.url))

app.use(cors())
app.use(express.json())

// API routes
app.get('/api/health', (_req, res) => {
  res.json({ success: true, message: 'NewAPI Dashboard BFF running' })
})

app.use('/api/sites', sitesRouter)
app.use('/api/auth', authRouter)
app.use('/proxy', proxyRouter)
app.use('/api/billing', billingRouter)

// Production: serve frontend static files from dist/
const distPath = path.join(__dirname, '..', 'dist')
if (fs.existsSync(path.join(distPath, 'index.html'))) {
  app.use(express.static(distPath))
  // SPA fallback: any non-API GET request returns index.html
  app.get('*', (_req, res) => {
    res.sendFile(path.join(distPath, 'index.html'))
  })
}

// Download Chinese font then start server
ensureChineseFont()
  .then(() => {
    app.listen(PORT, '0.0.0.0', () => {
      console.log(`BFF server running on http://0.0.0.0:${PORT}`)
    })
  })
  .catch((err) => {
    console.error('Font initialization failed:', err.message)
    app.listen(PORT, '0.0.0.0', () => {
      console.log(`BFF server running on http://0.0.0.0:${PORT} (font unavailable)`)
    })
  })