amazon uploader class

amazon-uploader.rb

class AmazonUploader
  attr_reader :category_name, :media_type, :file, :filename, :bucket

  def initialize(media_object, file)
    @category_name = media_object.category.bucket_name
    @media_type = media_object.class.to_s.downcase + "s"
    @bucket = 'iron-uploads'
    @file = file.tempfile
    @filename = file.original_filename
  end

  def store!
    AWS::S3::S3Object.store(
      "#{category_name}/#{media_type}/#{filename}",
      open(file.path),
      bucket,
      access: :public_read
    )
  end

  def self.delete!(media_object)
    AWS::S3::S3Object.delete(
      media_object.filename,
      "iron-uploads/#{media_object.category.bucket_name}/#{media_object.class.to_s.downcase}s"
    )

    AWS::S3::S3Object.delete(
      media_object.placeholder_filename,
      "iron-uploads/#{media_object.category.bucket_name}/placeholders"
    )
  end

  def store_placeholder!
    AWS::S3::S3Object.store(
      "#{category_name}/placeholders/#{filename}",
      open(file.path),
      bucket,
      access: :public_read
    )
  end

  def url
    "https://#{bucket}.s3.amazonaws.com/#{category_name}/#{media_type}/#{filename}"
  end

  def placeholder_url
    "https://#{bucket}.s3.amazonaws.com/#{category_name}/placeholders/#{filename}"
  end
end