const { withDangerousMod } = require('@expo/config-plugins')
const fs = require('fs')
const path = require('path')

const PREPEND_LINE = '$RNFirebaseAnalyticsEnableAdSupport = true'

/**
 *
 * @param {import('expo/config-plugins').ExportedConfig} config
 * @returns {import('expo/config-plugins').ExportedConfigWithProps}
 */
module.exports = config => {
  return withDangerousMod(config, [
    'ios',
    config => {
      const file = path.join(
        config.modRequest.platformProjectRoot,
        'Podfile'
      )

      const contents = fs
        .readFileSync(file, 'utf-8')
        .replace(PREPEND_LINE + '\n\n', '')

      fs.writeFileSync(file, `${PREPEND_LINE}\n\n${contents}`)

      return config
    }
  ])
}