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2d895de297Adds the ability to automatically generate Open Graph images for topics that don't have their own image. When enabled via the generate_topic_og_image site setting, a background job creates a branded 1200×630 PNG for each new topic OP. Key changes: - TopicOgImageGenerator builds an SVG and converts it to PNG via ImageMagick - Images generated via GenerateTopicOgImage Sidekiq job - Generated images handled via og_image_upload_id column on the topics table - TopicView#image_url falls back to the generated OG image when no topic image is available This includes a preview for admins so they can see if they like this feature or not: https://github.com/user-attachments/assets/62d17704-4ee5-4859-ac37-b127fe27b85c And it also respects the site's default theme: <img width="1200" height="630" alt="image" src="https://github.com/user-attachments/assets/678f5c5d-e593-4385-b800-141196dfc221" /> --------- Co-authored-by: discourse-patch-triage[bot] <272280883+discourse-patch-triage[bot]@users.noreply.github.com> Co-authored-by: Gabriel Grubba <gabriel@discourse.org>
73 lines
2.1 KiB
Ruby
Vendored
73 lines
2.1 KiB
Ruby
Vendored
# frozen_string_literal: true
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class Admin::Config::LogoController < Admin::AdminController
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def index
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end
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def og_image_preview
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raise Discourse::InvalidParameters.new(:topic_id) if params[:topic_id].blank?
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topic = Topic.find_by(id: params[:topic_id])
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raise Discourse::NotFound if topic.nil?
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if !TopicOgImageGenerator.eligible?(topic)
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render json: {
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error: I18n.t("topic_og_image.preview_not_eligible"),
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},
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status: :unprocessable_entity
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return
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end
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png_bytes = TopicOgImageGenerator.new(topic).generate_bytes
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if png_bytes.blank?
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render json: {
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error: I18n.t("topic_og_image.preview_generation_failed"),
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},
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status: :unprocessable_entity
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return
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end
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data_uri = "data:image/png;base64,#{Base64.strict_encode64(png_bytes)}"
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render json: { url: data_uri, topic_id: topic.id, topic_title: topic.title }
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end
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def update
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settings =
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%i[
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logo
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logo_dark
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large_icon
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favicon
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logo_small
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logo_small_dark
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mobile_logo
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mobile_logo_dark
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manifest_icon
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manifest_screenshots
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apple_touch_icon
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digest_logo
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generate_topic_og_image
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opengraph_image
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x_summary_large_image
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].filter_map do |setting|
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next if SiteSetting.hidden_settings.include?(setting)
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{ setting_name: setting, value: params[setting] }
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end
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SiteSetting::Update.call(guardian:, params: { settings: }) do
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on_success { render json: success_json }
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on_failed_policy(:settings_are_visible) do |policy|
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raise Discourse::InvalidParameters, policy.reason
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end
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on_failed_policy(:settings_are_unshadowed_globally) do |policy|
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raise Discourse::InvalidParameters, policy.reason
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end
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on_failed_policy(:settings_are_configurable) do |policy|
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raise Discourse::InvalidParameters, policy.reason
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end
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on_failed_policy(:values_are_valid) do |policy|
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raise Discourse::InvalidParameters, policy.reason
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end
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end
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end
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end
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