discourse/app/models/site_setting.rb

# frozen_string_literal: true

class SiteSetting < ActiveRecord::Base
  VALID_AREAS = %w[
    about
    analytics
    login
    authenticators
    discourseconnect
    oauth2
    oidc
    saml
    badges
    categories
    categories_and_tags
    email
    embedding
    emojis
    experimental
    flags
    fonts
    gifs
    group_permissions
    interface
    legal
    localization
    navigation
    notifications
    permalinks
    reports
    posts_and_topics
    user_defaults
    sharing
    site_admin
    stats_and_thresholds
    trust_levels
    users
  ]

  DEFAULT_USER_PREFERENCES = %w[
    default_email_digest_frequency
    default_include_tl0_in_digests
    default_email_level
    default_email_messages_level
    default_email_mailing_list_mode
    default_email_mailing_list_mode_frequency
    default_email_previous_replies
    default_email_in_reply_to
    default_hide_profile
    default_hide_presence
    default_other_new_topic_duration_minutes
    default_other_auto_track_topics_after_msecs
    default_other_notification_level_when_replying
    default_other_external_links_in_new_tab
    default_other_enable_quoting
    default_other_enable_smart_lists
    default_other_enable_defer
    default_other_dynamic_favicon
    default_other_like_notification_frequency
    default_other_skip_new_user_tips
    default_other_enable_markdown_monospace_font
    default_topics_automatic_unpin
    default_categories_watching
    default_categories_tracking
    default_categories_muted
    default_categories_watching_first_post
    default_categories_normal
    default_tags_watching
    default_tags_tracking
    default_tags_muted
    default_tags_watching_first_post
    default_text_size
    default_title_count_mode
    default_navigation_menu_categories
    default_navigation_menu_tags
    default_sidebar_link_to_filtered_list
    default_sidebar_show_count_of_new_items
    default_composition_mode
    default_watched_precedence_over_muted
  ]

  extend GlobalPath
  extend SiteSettingExtension

  has_many :upload_references, as: :target, dependent: :destroy

  validates :name, presence: true
  validates :data_type, presence: true

  after_save do
    if saved_change_to_value?
      if data_type == SiteSettings::TypeSupervisor.types[:upload]
        UploadReference.ensure_exist!(upload_ids: [value], target: self)
      elsif data_type == SiteSettings::TypeSupervisor.types[:uploaded_image_list]
        upload_ids = value.split("|").compact.uniq
        UploadReference.ensure_exist!(upload_ids: upload_ids, target: self)
      elsif data_type == SiteSettings::TypeSupervisor.types[:objects] && value.present?
        upload_ids =
          SchemaSettingsObjectValidator.upload_ids(
            schema: SiteSetting.type_supervisor.type_hash(name.to_sym)[:schema],
            objects: JSON.parse(value),
          )

        UploadReference.ensure_exist!(upload_ids: upload_ids, target: self)
      end
    end
  end

  load_settings(Rails.root.join("config/site_settings.yml").to_s)

  if Rails.env.test?
    SAMPLE_TEST_PLUGIN =
      Plugin::Instance.new(
        Plugin::Metadata.new.tap { |metadata| metadata.name = "discourse-sample-plugin" },
      )

    Discourse.plugins_by_name[SAMPLE_TEST_PLUGIN.name] = SAMPLE_TEST_PLUGIN

    load_settings(
      Rails.root.join("spec/support/sample_plugin_site_settings.yml").to_s,
      plugin: SAMPLE_TEST_PLUGIN.name,
    )
  end

  if GlobalSetting.load_plugins?
    allowed_plugins = GlobalSetting.plugins_to_load
    plugin_allowed = ->(name) { allowed_plugins.nil? || allowed_plugins.include?(name) }

    Dir[Rails.root.join("plugins/*/config/settings.yml").to_s].each do |file|
      plugin_name = file.split("/")[-3]
      load_settings(file, plugin: plugin_name) if plugin_allowed.call(plugin_name)
    end

    # Sometimes plugins need to define their own fake site settings for testing
    if Rails.env.test?
      Dir[
        Rails.root.join("plugins/*/spec/support/dummy_plugin_site_settings.yml").to_s
      ].each do |file|
        plugin_name = file.split("/")[-4]
        load_settings(file, plugin: plugin_name) if plugin_allowed.call(plugin_name)
      end
    end
  end

  setup_deprecated_methods
  client_settings << :available_locales

  def self.available_locales
    LocaleSiteSetting.values.to_json
  end

  def self.content_localization_locales
    locales = SiteSetting.content_localization_supported_locales.split("|")
    default_locale = SiteSetting.default_locale
    locales << default_locale if default_locale.present? && !locales.include?(default_locale)
    locales
  end

  client_settings << :available_content_localization_locales

  def self.available_content_localization_locales
    return [] if !SiteSetting.content_localization_enabled?

    locales = content_localization_locales
    LocaleSiteSetting.values.select { |locale| locales.include?(locale[:value]) }
  end

  def self.topic_title_length
    min_topic_title_length..max_topic_title_length
  end

  def self.private_message_title_length
    min_personal_message_title_length..max_topic_title_length
  end

  def self.post_length
    min_post_length..max_post_length
  end

  def self.first_post_length
    min_first_post_length..max_post_length
  end

  def self.private_message_post_length
    min_personal_message_post_length..max_post_length
  end

  def self.top_menu_items
    top_menu_map.map { |menu_item| TopMenuItem.new(menu_item) }
  end

  def self.homepage
    top_menu_items[0].name
  end

  def self.anonymous_menu_items
    @anonymous_menu_items ||= Set.new Discourse.anonymous_filters.map(&:to_s)
  end

  def self.anonymous_homepage
    top_menu_items
      .map { |item| item.name }
      .select { |item| anonymous_menu_items.include?(item) }
      .first
  end

  def self.should_download_images?(src)
    setting = disabled_image_download_domains
    return true if setting.blank?

    host = URI.parse(src).host
    !setting.split("|").include?(host)
  rescue URI::Error
    true
  end

  def self.scheme
    force_https? ? "https" : "http"
  end

  def self.min_redirected_to_top_period(duration)
    ListController.best_period_with_topics_for(duration)
  end

  def self.email_polling_enabled?
    SiteSetting.manual_polling_enabled? || SiteSetting.pop3_polling_enabled? ||
      DiscoursePluginRegistry.mail_pollers.any?(&:enabled?)
  end

  def self.blocked_attachment_content_types_regex
    current_db = RailsMultisite::ConnectionManagement.current_db

    @blocked_attachment_content_types_regex ||= {}
    @blocked_attachment_content_types_regex[current_db] ||= Regexp.union(
      SiteSetting.blocked_attachment_content_types.split("|"),
    )
  end

  def self.blocked_attachment_filenames_regex
    current_db = RailsMultisite::ConnectionManagement.current_db

    @blocked_attachment_filenames_regex ||= {}
    @blocked_attachment_filenames_regex[current_db] ||= Regexp.union(
      SiteSetting.blocked_attachment_filenames.split("|"),
    )
  end

  def self.allowed_unicode_username_characters_regex
    current_db = RailsMultisite::ConnectionManagement.current_db

    @allowed_unicode_username_regex ||= {}
    @allowed_unicode_username_regex[
      current_db
    ] ||= if SiteSetting.allowed_unicode_username_characters.present?
      Regexp.new(SiteSetting.allowed_unicode_username_characters)
    end
  end

  def self.history_for(setting_name)
    UserHistory.where(
      action: UserHistory.actions[:change_site_setting],
      subject: setting_name,
    ).order(created_at: :desc)
  end

  class ImageQuality
    def self.png_to_jpg_quality
      SiteSetting.png_to_jpg_quality.nonzero? || SiteSetting.image_quality
    end

    def self.recompress_original_jpg_quality
      SiteSetting.recompress_original_jpg_quality.nonzero? || SiteSetting.image_quality
    end

    def self.image_preview_jpg_quality
      SiteSetting.image_preview_jpg_quality.nonzero? || SiteSetting.image_quality
    end
  end

  def self.ImageQuality
    SiteSetting::ImageQuality
  end

  # helpers for getting s3 settings that fallback to global
  class Upload
    def self.s3_cdn_url
      SiteSetting.enable_s3_uploads ? SiteSetting.s3_cdn_url : GlobalSetting.s3_cdn_url
    end

    def self.s3_region
      SiteSetting.enable_s3_uploads ? SiteSetting.s3_region : GlobalSetting.s3_region
    end

    def self.s3_upload_bucket
      SiteSetting.enable_s3_uploads ? SiteSetting.s3_upload_bucket : GlobalSetting.s3_bucket
    end

    def self.s3_endpoint
      SiteSetting.enable_s3_uploads ? SiteSetting.s3_endpoint : GlobalSetting.s3_endpoint
    end

    def self.enable_s3_transfer_acceleration
      if SiteSetting.enable_s3_uploads
        SiteSetting.enable_s3_transfer_acceleration
      else
        GlobalSetting.enable_s3_transfer_acceleration
      end
    end

    def self.use_dualstack_endpoint
      return false if !SiteSetting.Upload.enable_s3_uploads
      return false if SiteSetting.Upload.s3_endpoint.present?
      !SiteSetting.Upload.s3_region.start_with?("cn-")
    end

    def self.enable_s3_uploads
      SiteSetting.enable_s3_uploads || GlobalSetting.use_s3?
    end

    def self.s3_base_url
      path = s3_upload_bucket.split("/", 2)[1]
      "#{absolute_base_url}#{path ? "/" + path : ""}"
    end

    def self.absolute_base_url
      url_basename = SiteSetting.s3_endpoint.split("/")[-1]
      bucket =
        (
          if SiteSetting.enable_s3_uploads
            Discourse.store.s3_bucket_name
          else
            GlobalSetting.s3_bucket_name
          end
        )

      # cf. http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region
      if SiteSetting.s3_endpoint.blank? || SiteSetting.s3_endpoint.end_with?("amazonaws.com")
        if SiteSetting.Upload.use_dualstack_endpoint
          "//#{bucket}.s3.dualstack.#{SiteSetting.Upload.s3_region}.amazonaws.com"
        else
          "//#{bucket}.s3.#{SiteSetting.Upload.s3_region}.amazonaws.com.cn"
        end
      else
        "//#{bucket}.#{url_basename}"
      end
    end
  end

  def self.Upload
    SiteSetting::Upload
  end

  def self.require_invite_code
    invite_code.present?
  end
  client_settings << :require_invite_code

  %i[
    site_logo_url
    site_logo_small_url
    site_mobile_logo_url
    site_favicon_url
    site_logo_dark_url
    site_logo_small_dark_url
    site_mobile_logo_dark_url
  ].each { |client_setting| client_settings << client_setting }

  %i[
    logo
    logo_small
    digest_logo
    mobile_logo
    logo_dark
    logo_small_dark
    mobile_logo_dark
    large_icon
    manifest_icon
    favicon
    apple_touch_icon
    x_summary_large_image
    opengraph_image
    push_notifications_icon
  ].each do |setting_name|
    define_singleton_method("site_#{setting_name}_url") do
      if SiteIconManager.respond_to?("#{setting_name}_url")
        return SiteIconManager.public_send("#{setting_name}_url")
      end

      upload = public_send(setting_name)
      upload ? full_cdn_url(upload.url) : ""
    end
  end

  def self.shared_drafts_enabled?
    c = SiteSetting.shared_drafts_category
    c.present? && c.to_i != SiteSetting.uncategorized_category_id.to_i
  end

  protected

  def self.clear_cache!(expire_theme_site_setting_cache: false)
    super(expire_theme_site_setting_cache:)

    @blocked_attachment_content_types_regex = nil
    @blocked_attachment_filenames_regex = nil
    @allowed_unicode_username_regex = nil
  end
end

# == Schema Information
#
# Table name: site_settings
#
#  id         :integer          not null, primary key
#  data_type  :integer          not null
#  name       :string           not null
#  value      :text
#  created_at :datetime         not null
#  updated_at :datetime         not null
#
# Indexes
#
#  index_site_settings_on_name  (name) UNIQUE
#