const fs = require('fs').promises
const { buildImage } = require('../helpers')
const { streamEvents, docker } = require('../../libs/docker')

module.exports = async function (configuration) {
  if (configuration.build.command.build) await buildImage(configuration)

  let dockerFile = `# production stage
      FROM node:lts
      WORKDIR /usr/src/app
      `
  if (configuration.build.command.build) {
    dockerFile += `COPY --from=${configuration.build.container.name}:${configuration.build.container.tag} /usr/src/app/${configuration.build.directory} /usr/src/app`
  } else {
    dockerFile += 'COPY . ./'
  }
  if (configuration.build.command.installation) {
    dockerFile += `
      RUN ${configuration.build.command.installation}
      `
  }
  dockerFile += `
        EXPOSE ${configuration.publish.port}
        CMD [ "yarn", "start" ]`

  await fs.writeFile(`${configuration.general.workdir}/Dockerfile`, dockerFile)
  const stream = await docker.engine.buildImage(
    { src: ['.'], context: configuration.general.workdir },
    { t: `${configuration.build.container.name}:${configuration.build.container.tag}` }
  )
  await streamEvents(stream, configuration)
}