class TinyMceAsset < ActiveRecord::Base attr_accessor :reference before_create :set_reference after_create :update_estimated_size after_destroy :release_team_space belongs_to :team, inverse_of: :tiny_mce_assets belongs_to :step, inverse_of: :tiny_mce_assets belongs_to :result_text, inverse_of: :tiny_mce_assets has_attached_file :image, styles: { large: [Constants::LARGE_PIC_FORMAT, :jpg] }, convert_options: { large: '-quality 100 -strip' } validates_attachment_content_type :image, content_type: %r{^image/#{ Regexp.union( Constants::WHITELISTED_IMAGE_TYPES ) }} validates_attachment :image, presence: true, size: { less_than: Constants::FILE_MAX_SIZE_MB.megabytes } validates :estimated_size, presence: true # When using S3 file upload, we can limit file accessibility with url signing def presigned_url(style = :large, download: false, timeout: Constants::URL_LONG_EXPIRE_TIME) if stored_on_s3? if download download_arg = 'attachment; filename=' + URI.escape(image_file_name) else download_arg = nil end signer = Aws::S3::Presigner.new(client: S3_BUCKET.client) signer.presigned_url(:get_object, bucket: S3_BUCKET.name, key: image.path(style)[1..-1], expires_in: timeout, response_content_disposition: download_arg) end end def stored_on_s3? image.options[:storage].to_sym == :s3 end def url(style = :large, timeout: Constants::URL_LONG_EXPIRE_TIME) if image.is_stored_on_s3? presigned_url(style, timeout: timeout) else image.url(style) end end private def update_estimated_size return if image_file_size.blank? es = image_file_size * Constants::ASSET_ESTIMATED_SIZE_FACTOR update(estimated_size: es) Rails.logger.info "Asset #{id}: Estimated size successfully calculated" # update team space taken self.team.take_space(es) self.team.save end def release_team_space self.team.release_space(estimated_size) self.team.save end def set_reference obj_type = "#{@reference.class.to_s.underscore}=".to_sym public_send(obj_type, @reference) if @reference end end