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# frozen_string_literal: true
module Remotable
extend ActiveSupport::Concern
class_methods do
def remotable_attachment(attachment_name, limit, suppress_errors: true, download_on_assign: true, attribute_name: nil)
attribute_name ||= "#{attachment_name}_remote_url".to_sym
define_method("download_#{attachment_name}!") do |url = nil|
url ||= self[attribute_name]
return if url.blank?
begin
parsed_url = Addressable::URI.parse(url).normalize
rescue Addressable::URI::InvalidURIError
return
end
return if !%w(http https).include?(parsed_url.scheme) || parsed_url.host.blank?
begin
Request.new(:get, url).perform do |response|
raise Mastodon::UnexpectedResponseError, response unless (200...300).cover?(response.code)
public_send("#{attachment_name}=", ResponseWithLimit.new(response, limit))
end
rescue Mastodon::UnexpectedResponseError, HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError => e
Rails.logger.debug { "Error fetching remote #{attachment_name}: #{e}" }
public_send("#{attachment_name}=", nil) if public_send("#{attachment_name}_file_name").present?
raise e unless suppress_errors
rescue Paperclip::Errors::NotIdentifiedByImageMagickError, Addressable::URI::InvalidURIError, Mastodon::HostValidationError, Mastodon::LengthValidationError, Paperclip::Error, Mastodon::DimensionsValidationError, Mastodon::StreamValidationError => e
Rails.logger.debug { "Error fetching remote #{attachment_name}: #{e}" }
public_send("#{attachment_name}=", nil) if public_send("#{attachment_name}_file_name").present?
end
nil
end
define_method("#{attribute_name}=") do |url|
return if self[attribute_name] == url && public_send("#{attachment_name}_file_name").present?
self[attribute_name] = url if has_attribute?(attribute_name)
public_send("download_#{attachment_name}!", url) if download_on_assign
end
alias_method("reset_#{attachment_name}!", "download_#{attachment_name}!")
end
end
end
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