import Fastify from 'fastify'
import { databasePlugin } from './plugins/database.js'
import { redisPlugin } from './plugins/redis.js'
import { corsPlugin } from './plugins/cors.js'
import { errorHandlerPlugin } from './plugins/error-handler.js'
import { authPlugin } from './plugins/auth.js'
import { devAuthPlugin } from './plugins/dev-auth.js'
import { healthRoutes } from './routes/v1/health.js'
import { authRoutes } from './routes/v1/auth.js'
import { accountRoutes } from './routes/v1/accounts.js'
import { inventoryRoutes } from './routes/v1/inventory.js'

export async function buildApp() {
  const app = Fastify({
    logger: {
      level: process.env.LOG_LEVEL ?? 'info',
      ...(process.env.NODE_ENV === 'development' ? { transport: { target: 'pino-pretty' } } : {}),
    },
    genReqId: () => crypto.randomUUID(),
  })

  // Plugins
  await app.register(corsPlugin)
  await app.register(errorHandlerPlugin)
  await app.register(databasePlugin)
  await app.register(redisPlugin)

  // Auth — use JWT if secret is set, otherwise dev bypass
  if (process.env.JWT_SECRET) {
    await app.register(authPlugin)
  } else {
    await app.register(devAuthPlugin)
  }

  // Routes
  await app.register(healthRoutes, { prefix: '/v1' })
  await app.register(authRoutes, { prefix: '/v1' })
  await app.register(accountRoutes, { prefix: '/v1' })
  await app.register(inventoryRoutes, { prefix: '/v1' })

  return app
}

async function start() {
  const app = await buildApp()

  const port = parseInt(process.env.PORT ?? '8000', 10)
  const host = process.env.HOST ?? '0.0.0.0'

  try {
    await app.listen({ port, host })
  } catch (err) {
    app.log.error(err)
    process.exit(1)
  }
}

// Only auto-start when not imported by tests
if (process.env.NODE_ENV !== 'test') {
  start()
}