2019-03-11 20:43:50 +08:00
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# frozen_string_literal: true
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2017-06-23 21:19:08 +08:00
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class TinyMceAsset < ApplicationRecord
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attr_accessor :reference
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before_create :set_reference, optional: true
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after_create :update_estimated_size, :self_destruct
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after_destroy :release_team_space
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after_save :update_description
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2017-06-28 21:21:32 +08:00
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belongs_to :team, inverse_of: :tiny_mce_assets, optional: true
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belongs_to :step, inverse_of: :tiny_mce_assets, touch: true, optional: true
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belongs_to :result_text,
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inverse_of: :tiny_mce_assets,
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touch: true,
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optional: true
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belongs_to :object, polymorphic: true,
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optional: true,
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inverse_of: :tiny_mce_assets
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has_attached_file :image,
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styles: { large: [Constants::LARGE_PIC_FORMAT, :jpg] },
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convert_options: { large: '-quality 100 -strip' }
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validates_attachment_content_type :image,
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content_type: %r{^image/#{ Regexp.union(
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Constants::WHITELISTED_IMAGE_TYPES
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) }}
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validates_attachment :image,
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presence: true,
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size: {
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less_than: Rails.configuration.x\
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.file_max_size_mb.megabytes
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}
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validates :estimated_size, presence: true
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def self.update_images(object, images)
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images = JSON.parse(images)
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current_images = object.tiny_mce_assets.pluck(:id)
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images_to_delete = current_images.reject do |x|
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(images.include? Base62.encode(x))
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end
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images.each do |image|
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image_to_update = find_by_id(Base62.decode(image))
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image_to_update&.update(object: object, saved: true)
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end
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where(id: images_to_delete).destroy_all
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rescue StandardError => e
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Rails.logger.error e.message
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end
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def self.reload_images(images = [])
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images.each do |image|
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old_id = image.class == Array ? image[0] : image
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new_id = image.class == Array ? image[1] : image
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image_to_update = find_by_id(new_id)
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next unless image_to_update
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object_field = data_fields[image_to_update.object_type]
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next unless image_to_update.object
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old_description = Nokogiri::HTML(image_to_update.object[object_field])
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descirption_image = old_description.css(
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"img[data-token=\"#{Base62.encode(old_id)}\"]"
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)
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descirption_image.attr('src').value = image_to_update.url
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descirption_image.attr('data-token').value = Base62.encode(new_id)
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descirption_image[0]['class'] = 'img-responsive'
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new_descirption = old_description.css('body').inner_html.to_s
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image_to_update.object.update(object_field => new_descirption)
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end
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end
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def presigned_url(style = :large,
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download: false,
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timeout: Constants::URL_LONG_EXPIRE_TIME)
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if stored_on_s3?
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download_arg = if download
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'attachment; filename=' + CGI.escape(image_file_name)
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end
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signer = Aws::S3::Presigner.new(client: S3_BUCKET.client)
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signer.presigned_url(:get_object,
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bucket: S3_BUCKET.name,
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key: image.path(style)[1..-1],
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expires_in: timeout,
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response_content_disposition: download_arg)
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end
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end
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def stored_on_s3?
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image.options[:storage].to_sym == :s3
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end
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2017-05-09 19:59:59 +08:00
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def url(style = :large, timeout: Constants::URL_LONG_EXPIRE_TIME)
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if image.is_stored_on_s3?
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presigned_url(style, timeout: timeout)
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else
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image.url(style)
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end
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end
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2017-11-21 23:30:48 +08:00
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def open
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if image.is_stored_on_s3?
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Kernel.open(presigned_url, 'rb')
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else
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File.open(image.path, 'rb')
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end
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end
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2019-03-20 21:40:18 +08:00
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def self.delete_unsaved_image(id)
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asset = find_by_id(id)
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asset.destroy if asset && !asset.saved
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end
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def self.data_fields
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{
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'Step' => :description,
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'ResultText' => :text
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}
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end
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private
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def update_description
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TinyMceAsset.reload_images([id]) if object
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end
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2019-03-20 21:40:18 +08:00
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def self_destruct
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delay(queue: :assets, run_at: 1.days.from_now).delete_unsaved_image(id)
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end
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2017-04-24 18:28:27 +08:00
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def update_estimated_size
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return if image_file_size.blank?
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es = image_file_size * Constants::ASSET_ESTIMATED_SIZE_FACTOR
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update(estimated_size: es)
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Rails.logger.info "Asset #{id}: Estimated size successfully calculated"
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# update team space taken
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team.take_space(es)
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team.save
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end
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def release_team_space
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team.release_space(estimated_size)
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team.save
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end
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def set_reference
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obj_type = "#{@reference.class.to_s.underscore}=".to_sym
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public_send(obj_type, @reference) if @reference
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end
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end
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