/**
 * Generate additional configuration files when used for packaging. The file can be configured with some global variables, so that it can be changed directly externally without repackaging
 */
import { GLOB_CONFIG_FILE_NAME, OUTPUT_DIR } from '../constant'
import fs, { writeFileSync } from 'fs-extra'
import colors from 'picocolors'

import { getEnvConfig, getRootPath } from '../utils'
import { getConfigFileName } from '../getConfigFileName'

import pkg from '../../package.json'

interface CreateConfigParams {
  configName: string
  config: any
  configFileName?: string
}

function createConfig(params: CreateConfigParams) {
  const { configName, config, configFileName } = params
  try {
    const windowConf = `window.${configName}`
    // Ensure that the variable will not be modified
    let configStr = `${windowConf}=${JSON.stringify(config)};`
    configStr += `
      Object.freeze(${windowConf});
      Object.defineProperty(window, "${configName}", {
        configurable: false,
        writable: false,
      });
    `.replace(/\s/g, '')

    fs.mkdirp(getRootPath(OUTPUT_DIR))
    writeFileSync(getRootPath(`${OUTPUT_DIR}/${configFileName}`), configStr)

    console.log(colors.cyan(`✨ [${pkg.name}]`) + ` - configuration file is build successfully:`)
    console.log(colors.gray(OUTPUT_DIR + '/' + colors.green(configFileName)) + '\n')
  } catch (error) {
    console.log(colors.red('configuration file configuration file failed to package:\n' + error))
  }
}

export function runBuildConfig() {
  const config = getEnvConfig()
  const configFileName = getConfigFileName(config)
  createConfig({ config, configName: configFileName, configFileName: GLOB_CONFIG_FILE_NAME })
}