import { spawn } from 'child_process'
import { createServer as ViteCreateServer, build as viteBuild, createLogger } from 'vite'
import colors from 'picocolors'
import { InlineConfig, resolveConfig } from './config'
import { ensureElectronEntryFile, getElectronPath, resolveHostname } from './utils'

export async function createServer(inlineConfig: InlineConfig = {}): Promise<void> {
  const config = await resolveConfig(inlineConfig, 'serve', 'development')
  if (config.config) {
    const logger = createLogger(inlineConfig.logLevel)

    const mainViteConfig = config.config?.main
    if (mainViteConfig) {
      await viteBuild(mainViteConfig)

      logger.info(colors.green(`\nbuild the electron main process successfully`))
    }

    const preloadViteConfig = config.config?.preload
    if (preloadViteConfig) {
      logger.info(colors.gray(`\n-----\n`))
      await viteBuild(preloadViteConfig)

      logger.info(colors.green(`\nbuild the electron preload files successfully`))
    }

    const rendererViteConfig = config.config?.renderer
    if (rendererViteConfig) {
      logger.info(colors.gray(`\n-----\n`))

      const server = await ViteCreateServer(rendererViteConfig)

      if (!server.httpServer) {
        throw new Error('HTTP server not available')
      }

      await server.listen()

      const conf = server.config.server

      const protocol = conf.https ? 'https:' : 'http:'
      const host = resolveHostname(conf.host)
      const port = conf.port
      process.env.ELECTRON_RENDERER_URL = `${protocol}//${host}:${port}`

      const slogger = server.config.logger

      slogger.info(colors.green(`dev server running for the electron renderer process at:\n`), {
        clear: !slogger.hasWarned
      })

      server.printUrls()
    }

    ensureElectronEntryFile(inlineConfig.root)

    const electronPath = getElectronPath()

    const ps = spawn(electronPath, ['.'])
    ps.stdout.on('data', chunk => {
      chunk.toString().trim() && logger.info(chunk.toString())
    })
    ps.stderr.on('data', chunk => {
      chunk.toString().trim() && logger.error(chunk.toString())
    })
    ps.on('close', process.exit)

    logger.info(colors.green(`\nstart electron app...`))
  }
}