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148 lines
4.2 KiB
148 lines
4.2 KiB
# frozen_string_literal: true |
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# == Schema Information |
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# |
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# Table name: preview_cards |
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# |
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# id :bigint(8) not null, primary key |
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# url :string default(""), not null |
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# title :string default(""), not null |
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# description :string default(""), not null |
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# image_file_name :string |
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# image_content_type :string |
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# image_file_size :integer |
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# image_updated_at :datetime |
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# type :integer default("link"), not null |
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# html :text default(""), not null |
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# author_name :string default(""), not null |
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# author_url :string default(""), not null |
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# provider_name :string default(""), not null |
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# provider_url :string default(""), not null |
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# width :integer default(0), not null |
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# height :integer default(0), not null |
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# created_at :datetime not null |
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# updated_at :datetime not null |
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# embed_url :string default(""), not null |
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# image_storage_schema_version :integer |
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# blurhash :string |
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# language :string |
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# max_score :float |
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# max_score_at :datetime |
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# trendable :boolean |
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# link_type :integer |
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# |
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class PreviewCard < ApplicationRecord |
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include Attachmentable |
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IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif', 'image/webp'].freeze |
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LIMIT = 1.megabytes |
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BLURHASH_OPTIONS = { |
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x_comp: 4, |
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y_comp: 4, |
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}.freeze |
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self.inheritance_column = false |
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enum type: [:link, :photo, :video, :rich] |
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enum link_type: [:unknown, :article] |
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has_and_belongs_to_many :statuses |
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has_attached_file :image, processors: [:thumbnail, :blurhash_transcoder], styles: ->(f) { image_styles(f) }, convert_options: { all: '-quality 80 -strip' }, validate_media_type: false |
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validates :url, presence: true, uniqueness: true |
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validates_attachment_content_type :image, content_type: IMAGE_MIME_TYPES |
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validates_attachment_size :image, less_than: LIMIT |
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remotable_attachment :image, LIMIT |
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scope :cached, -> { where.not(image_file_name: [nil, '']) } |
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before_save :extract_dimensions, if: :link? |
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def appropriate_for_trends? |
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link? && article? && title.present? && description.present? && image.present? && provider_name.present? |
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end |
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def domain |
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@domain ||= Addressable::URI.parse(url).normalized_host |
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end |
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def provider |
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@provider ||= PreviewCardProvider.matching_domain(domain) |
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end |
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def trendable? |
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if attributes['trendable'].nil? |
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provider&.trendable? |
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else |
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attributes['trendable'] |
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end |
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end |
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def requires_review? |
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attributes['trendable'].nil? && (provider.nil? || provider.requires_review?) |
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end |
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def requires_review_notification? |
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attributes['trendable'].nil? && (provider.nil? || provider.requires_review_notification?) |
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end |
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def decaying? |
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max_score_at && max_score_at >= Trends.links.options[:max_score_cooldown].ago && max_score_at < 1.day.ago |
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end |
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attr_writer :provider |
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def local? |
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false |
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end |
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def missing_image? |
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width.present? && height.present? && image_file_name.blank? |
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end |
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def save_with_optional_image! |
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save! |
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rescue ActiveRecord::RecordInvalid |
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self.image = nil |
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save! |
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end |
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def history |
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@history ||= Trends::History.new('links', id) |
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end |
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class << self |
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private |
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def image_styles(file) |
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styles = { |
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original: { |
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geometry: '400x400>', |
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file_geometry_parser: FastGeometryParser, |
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convert_options: '-coalesce -strip', |
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blurhash: BLURHASH_OPTIONS, |
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}, |
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} |
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styles[:original][:format] = 'jpg' if file.instance.image_content_type == 'image/gif' |
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styles |
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end |
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end |
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private |
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def extract_dimensions |
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file = image.queued_for_write[:original] |
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return if file.nil? |
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width, height = FastImage.size(file.path) |
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return nil if width.nil? |
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self.width = width |
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self.height = height |
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end |
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end
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