AWS S3 storage wrapper using aws-sdk gem

aws.rb

require 'aws-sdk'

credentials = Aws::Credentials.new(ENV['S3_ACCESS_KEY'], ENV['S3_SECRET_ACCESS_KEY'])

Aws.config.update(
  region: ENV['S3_REGION'],
  credentials: credentials
)

s3 = Aws::S3::Resource.new(ENV['S3_REGION'], credentials: credentials)
S3_BUCKET = s3.bucket(ENV['S3_BUCKET'])

aws_storage.rb

require 'aws-sdk'

module Utils
  class AwsStorage
    def upload_and_get_key(file)
      key = generate_object_key
      object = S3_BUCKET.object("#{bucket_folder}/#{key}")
      object.upload_file(file)

      key
    end

    def file_url(file_key)
      object = S3_BUCKET.object("store/#{file_key}")
      object.presigned_url(:get, expires_in: 604800)
    end

    private

    def generate_object_key
      ::SecureRandom.hex(32)
    end

    def bucket_folder
      'store'
    end
  end
end