lunarfront-app/packages/backend/src/main.ts

import Fastify from 'fastify'
import { drizzle } from 'drizzle-orm/postgres-js'
import { migrate } from 'drizzle-orm/postgres-js/migrator'
import postgres from 'postgres'
import rateLimit from '@fastify/rate-limit'
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 { storagePlugin } from './plugins/storage.js'
import { healthRoutes } from './routes/v1/health.js'
import { versionRoutes } from './routes/v1/version.js'
import { authRoutes } from './routes/v1/auth.js'
import { accountRoutes } from './routes/v1/accounts.js'
import { inventoryRoutes } from './routes/v1/inventory.js'
import { productRoutes } from './routes/v1/products.js'
import { lookupRoutes } from './routes/v1/lookups.js'
import { fileRoutes } from './routes/v1/files.js'
import { rbacRoutes } from './routes/v1/rbac.js'
import { repairRoutes } from './routes/v1/repairs.js'
import { lessonRoutes } from './routes/v1/lessons.js'
import { transactionRoutes } from './routes/v1/transactions.js'
import { drawerRoutes } from './routes/v1/drawer.js'
import { registerRoutes } from './routes/v1/register.js'
import { reportRoutes } from './routes/v1/reports.js'
import { discountRoutes } from './routes/v1/discounts.js'
import { taxRoutes } from './routes/v1/tax.js'
import { storageRoutes } from './routes/v1/storage.js'
import { storeRoutes } from './routes/v1/store.js'
import { vaultRoutes } from './routes/v1/vault.js'
import { webdavRoutes } from './routes/webdav/index.js'
import { moduleRoutes } from './routes/v1/modules.js'
import { configRoutes } from './routes/v1/config.js'
import { RbacService } from './services/rbac.service.js'
import { ModuleService } from './services/module.service.js'
import { AppConfigService } from './services/config.service.js'

export async function buildApp() {
  const app = Fastify({
    logger: {
      level: process.env.LOG_LEVEL ?? 'info',
      ...(process.env.NODE_ENV === 'development'
        ? { transport: { target: 'pino-pretty' } }
        : process.env.LOG_FILE
          ? {
              transport: {
                targets: [
                  { target: 'pino/file', options: { destination: 1 } }, // stdout
                  { target: 'pino/file', options: { destination: process.env.LOG_FILE, mkdir: true } },
                ],
              },
            }
          : {}),
    },
    genReqId: () => crypto.randomUUID(),
    requestTimeout: 30000, // 30 seconds
  })

  // Plugins
  await app.register(corsPlugin)
  await app.register(errorHandlerPlugin)
  await app.register(databasePlugin)
  await app.register(redisPlugin)
  await app.register(rateLimit, { global: false })
  await app.register(storagePlugin)

  // Auth — JWT in production/test, dev bypass only in development without JWT_SECRET
  if (process.env.JWT_SECRET) {
    await app.register(authPlugin)
  } else if (process.env.NODE_ENV === 'development' || process.env.NODE_ENV === 'test') {
    app.log.warn('JWT_SECRET not set — using dev auth bypass. DO NOT USE IN PRODUCTION.')
    await app.register(devAuthPlugin)
  } else {
    throw new Error('JWT_SECRET is required in production')
  }

  // Module gate middleware — returns 403 if module is disabled
  function requireModule(slug: string) {
    return async (_request: any, reply: any) => {
      const enabled = await ModuleService.isEnabled(app.db, slug)
      if (!enabled) {
        reply.status(403).send({ error: { message: `Module '${slug}' is not enabled`, statusCode: 403, module: slug } })
      }
    }
  }

  // Helper: wrap a route plugin so every route in it gets a module check.
  // Uses fastify-plugin (fp) pattern to inherit parent decorators while adding the hook.
  function withModule(slug: string, plugin: any) {
    const wrapped = async (instance: any, opts: any) => {
      instance.addHook('onRequest', requireModule(slug))
      await plugin(instance, opts)
    }
    // Copy the plugin's symbol to maintain encapsulation behavior
    if (plugin[Symbol.for('skip-override')]) {
      wrapped[Symbol.for('skip-override')] = true
    }
    // Copy plugin name for debugging
    Object.defineProperty(wrapped, 'name', { value: `${plugin.name || 'anonymous'}[${slug}]` })
    return wrapped
  }

  // Core routes — always available
  await app.register(healthRoutes, { prefix: '/v1' })
  await app.register(versionRoutes, { prefix: '/v1' })
  await app.register(authRoutes, { prefix: '/v1' })
  await app.register(accountRoutes, { prefix: '/v1' })
  await app.register(rbacRoutes, { prefix: '/v1' })
  await app.register(storeRoutes, { prefix: '/v1' })
  await app.register(moduleRoutes, { prefix: '/v1' })
  await app.register(configRoutes, { prefix: '/v1' })
  await app.register(lookupRoutes, { prefix: '/v1' })

  // Module-gated routes
  await app.register(withModule('inventory', inventoryRoutes), { prefix: '/v1' })
  await app.register(withModule('inventory', productRoutes), { prefix: '/v1' })
  await app.register(withModule('files', fileRoutes), { prefix: '/v1' })
  await app.register(withModule('files', storageRoutes), { prefix: '/v1' })
  await app.register(withModule('repairs', repairRoutes), { prefix: '/v1' })
  await app.register(withModule('lessons', lessonRoutes), { prefix: '/v1' })
  await app.register(withModule('pos', transactionRoutes), { prefix: '/v1' })
  await app.register(withModule('pos', drawerRoutes), { prefix: '/v1' })
  await app.register(withModule('pos', registerRoutes), { prefix: '/v1' })
  await app.register(withModule('pos', reportRoutes), { prefix: '/v1' })
  await app.register(withModule('pos', discountRoutes), { prefix: '/v1' })
  await app.register(withModule('pos', taxRoutes), { prefix: '/v1' })
  await app.register(withModule('vault', vaultRoutes), { prefix: '/v1' })
  // Register WebDAV custom HTTP methods before routes
  app.addHttpMethod('PROPFIND', { hasBody: true })
  app.addHttpMethod('PROPPATCH', { hasBody: true })
  app.addHttpMethod('MKCOL', { hasBody: true })
  app.addHttpMethod('COPY')
  app.addHttpMethod('MOVE')
  app.addHttpMethod('LOCK', { hasBody: true })
  app.addHttpMethod('UNLOCK')
  await app.register(webdavRoutes, { prefix: '/webdav' })

  // Auto-seed system permissions and warm module cache on startup
  app.addHook('onReady', async () => {
    try {
      await RbacService.seedPermissions(app.db)
      await RbacService.seedDefaultRoles(app.db)
      app.log.info('System permissions and roles seeded')
    } catch (err) {
      app.log.error({ err }, 'Failed to seed permissions/roles')
    }
    try {
      await ModuleService.refreshCache(app.db)
      const enabled = await ModuleService.getEnabledSlugs(app.db)
      app.log.info({ modules: [...enabled] }, 'Module cache loaded')
    } catch (err) {
      app.log.error({ err }, 'Failed to load module cache')
    }
    try {
      await AppConfigService.refreshCache(app.db)
      const dbLogLevel = await AppConfigService.get(app.db, 'log_level')
      if (dbLogLevel) {
        app.log.level = dbLogLevel
        app.log.info({ level: dbLogLevel }, 'Log level loaded from config')
      }
    } catch (err) {
      app.log.error({ err }, 'Failed to load app config')
    }
  })

  return app
}

async function runMigrations() {
  const connectionString = process.env.DATABASE_URL
  if (!connectionString) throw new Error('DATABASE_URL is required')

  const migrationsFolder = process.env.MIGRATIONS_DIR ?? './src/db/migrations'
  const sql = postgres(connectionString, { max: 1 })
  const db = drizzle(sql)

  await migrate(db, { migrationsFolder })
  await sql.end()
}

async function start() {
  await runMigrations()
  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()
}