105 lines
3.0 KiB
Ruby
105 lines
3.0 KiB
Ruby
# 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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#
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class PreviewCard < ApplicationRecord
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IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif'].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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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' }
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include Attachmentable
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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 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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class << self
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private
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def image_styles(f)
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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 f.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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