import process from 'node:process'

import { createApp } from './app.js'
import { runtimeConfig } from './config/runtime.js'
import { assertRuntimeConfigValid } from './config/runtime-validation.js'
import { bootstrapCoreServices } from './startup/bootstrap.js'
import { createShutdownController } from './startup/shutdown.js'
import { createStartupState, formatStartupError } from './startup/state.js'
import { logError, logInfo } from './utils/logger.js'

const port = Number(runtimeConfig.server.port || 3000)
const host = '0.0.0.0'
const startupState = createStartupState()

let shutdownController: ReturnType<typeof createShutdownController> | null = null

try {
  assertRuntimeConfigValid(runtimeConfig)
} catch (error) {
  logError('[startup]', '运行时配置校验失败，服务停止启动', error)
  process.exit(1)
}

const app = createApp({
  startupState,
  isShutdownStarted: () => shutdownController?.isShutdownStarted() || false,
  config: runtimeConfig,
})

const server = app.listen(port, host, () => {
  logInfo('[startup]', `order-site-backend kuaishou-lite listening on http://${host}:${port}`)
  void bootstrapCoreServices(startupState, () => shutdownController?.isShutdownStarted() || false)
})

shutdownController = createShutdownController(server, startupState)

server.on('error', (error) => {
  logError('[startup]', 'HTTP server failed', error)
})

process.on('SIGINT', () => {
  void shutdownController?.shutdown('SIGINT')
})

process.on('SIGTERM', () => {
  void shutdownController?.shutdown('SIGTERM')
})

process.on('unhandledRejection', (reason) => {
  startupState.process.lastUnhandledRejection = {
    time: new Date().toISOString(),
    message: formatStartupError(reason),
  }
  logError('[process]', 'unhandled promise rejection', reason)
})

process.on('uncaughtException', (error) => {
  startupState.process.lastUncaughtException = {
    time: new Date().toISOString(),
    message: formatStartupError(error),
  }
  logError('[process]', 'uncaught exception captured', error)
})