try-shrine

require 'shrine'
require 'shrine/storage/s3'

S3_OPTIONS = {
  access_key_id:     ENV.fetch('AWS_ACCESS_KEY_ID'),
  secret_access_key: ENV.fetch('AWS_SECRET_ACCESS_KEY'),
  region:            'eu-central-1',
  bucket:            ENV.fetch('AWS_BUCKET')
}.freeze

Shrine.storages = {
  cache: Shrine::Storage::S3.new(
    prefix: 'cache', upload_options: { acl: 'private' }, **S3_OPTIONS
  ),
  store: Shrine::Storage::S3.new(
    prefix: 'store', upload_options: { acl: 'public-read' }, **S3_OPTIONS
  )
}

# uploader = Shrine.new(:store)
# uploaded_file = uploader.upload(File.open('input/hello.txt'))