import express, {
  type Request,
  type Response,
  type NextFunction,
} from 'express'
import cors from 'cors'
import dotenv from 'dotenv'
import path from 'node:path'
import authRoutes from './routes/auth.js'

dotenv.config()

const app: express.Application = express()
const clientDistPath = path.resolve(process.cwd(), 'dist')

app.use(cors())
app.use(express.json({ limit: '10mb' }))
app.use(express.urlencoded({ extended: true, limit: '10mb' }))

/**
 * API Routes
 */
app.use('/api/auth', authRoutes)

/**
 * health
 */
app.use(
  '/api/health',
  (_req: Request, res: Response, _next: NextFunction): void => {
    res.status(200).json({
      ok: true,
      timestamp: new Date().toISOString(),
    })
  },
)

if (process.env.NODE_ENV === 'production') {
  app.use(express.static(clientDistPath))
  app.get('*', (req: Request, res: Response, next: NextFunction) => {
    if (req.path.startsWith('/api/')) {
      next()
      return
    }

    res.sendFile(path.join(clientDistPath, 'index.html'))
  })
}

/**
 * error handler middleware
 */
app.use((error: Error, _req: Request, res: Response, _next: NextFunction) => {
  console.error(error)
  res.status(500).json({
    success: false,
    error: 'Server internal error',
  })
})

/**
 * 404 handler
 */
app.use((_req: Request, res: Response) => {
  res.status(404).json({
    success: false,
    error: 'API not found',
  })
})

export default app