import Fastify, { FastifyInstance } from 'fastify'
import Database from 'better-sqlite3'
import cookie from '@fastify/cookie'
import type { Config } from './config.js'
import { SerialQueue } from './queue.js'
import { registerAuthRoutes } from './routes/authRoutes.js'
import { registerSettingsRoutes } from './routes/settingsRoutes.js'
import { registerLookupRoutes } from './routes/lookupRoutes.js'

declare module 'fastify' {
  interface FastifyInstance {
    db: Database.Database
    config: Config
    fetchImpl: typeof fetch
    discogsQueue: SerialQueue
  }
  interface FastifyRequest {
    user?: import('./auth.js').UserRow
  }
}

export interface AppOptions {
  db: Database.Database
  config: Config
  fetchImpl?: typeof fetch
}

export async function buildApp(opts: AppOptions): Promise<FastifyInstance> {
  const app = Fastify({ logger: false })
  app.decorate('db', opts.db)
  app.decorate('config', opts.config)
  app.decorate('fetchImpl', opts.fetchImpl ?? fetch)
  app.decorate('discogsQueue', new SerialQueue({ minIntervalMs: 1100 }))

  await app.register(cookie)
  await registerAuthRoutes(app)
  await registerSettingsRoutes(app)
  await registerLookupRoutes(app)

  app.get('/api/health', async () => ({ ok: true }))
  return app
}