Massive/write.ts

import {NativeModules, PermissionsAndroid} from 'react-native'
import {Dirs, FileSystem} from 'react-native-file-access'

export const write = async (name: string, data: string) => {
  const filePath = `${Dirs.DocumentDir}/${name}`
  const permission = async () => {
    const granted = await PermissionsAndroid.request(
      PermissionsAndroid.PERMISSIONS.WRITE_EXTERNAL_STORAGE,
    )
    return granted === PermissionsAndroid.RESULTS.GRANTED
  }
  const granted = await permission()
  if (!granted) return
  await FileSystem.writeFile(filePath, data)
  if (!FileSystem.exists(filePath)) return
  await FileSystem.cpExternal(filePath, name, 'downloads')
  NativeModules.DownloadModule.show(name)
}