Make DTL switchable

app/controllers/settings/preferences/other_controller.rb

@@ -1,6 +1,13 @@
 # frozen_string_literal: true
 
 class Settings::Preferences::OtherController < Settings::Preferences::BaseController
+  include DtlHelper
+
+  def show
+    @dtl_enabled = DTL_ENABLED
+    @dtl_tag = DTL_TAG
+  end
+
   private
 
   def after_update_redirect_path

app/helpers/dtl_helper.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+module DtlHelper
+  DTL_ENABLED = ENV.fetch('DTL_ENABLED', 'false') == 'true'
+  DTL_TAG = ENV.fetch('DTL_TAG', 'kmyblue')
+end

app/javascript/mastodon/features/ui/components/navigation_panel.jsx

@@ -7,7 +7,7 @@ import { Link } from 'react-router-dom';
 
 import { WordmarkLogo } from 'mastodon/components/logo';
 import NavigationPortal from 'mastodon/components/navigation_portal';
-import { enableDtlMenu, timelinePreview, trendsEnabled } from 'mastodon/initial_state';
+import { enableDtlMenu, timelinePreview, trendsEnabled, dtlTag } from 'mastodon/initial_state';
 import { transientSingleColumn } from 'mastodon/is_mobile';
 
 import ColumnLink from './column_link';
@@ -93,8 +93,8 @@ class NavigationPanel extends Component {
           </>
         )}
 
-        {signedIn && enableDtlMenu && (
+        {signedIn && enableDtlMenu && dtlTag && (
-          <ColumnLink transparent to='/tags/kmyblue' icon='users' text={intl.formatMessage(messages.deepLocal)} />
+          <ColumnLink transparent to={`/tags/${dtlTag}`} icon='users' text={intl.formatMessage(messages.deepLocal)} />
         )}
 
         {!signedIn && explorer}

app/javascript/mastodon/initial_state.js

@@ -58,6 +58,7 @@
  * @property {string} display_media
  * @property {boolean} display_media_expand
  * @property {string} domain
+ * @property {string} dtl_tag
  * @property {boolean} enable_login_privacy
  * @property {boolean} enable_dtl_menu
  * @property {boolean=} expand_spoilers
@@ -124,6 +125,7 @@ export const disabledAccountId = getMeta('disabled_account_id');
 export const displayMedia = getMeta('display_media');
 export const displayMediaExpand = getMeta('display_media_expand');
 export const domain = getMeta('domain');
+export const dtlTag = getMeta('dtl_tag');
 export const enableLoginPrivacy = getMeta('enable_login_privacy');
 export const enableDtlMenu = getMeta('enable_dtl_menu');
 export const expandSpoilers = getMeta('expand_spoilers');

app/models/status.rb

@@ -43,6 +43,7 @@ class Status < ApplicationRecord
   include RateLimitable
   include StatusSafeReblogInsert
   include StatusSearchConcern
+  include DtlHelper
 
   rate_limit by: :account, family: :statuses
 
@@ -291,7 +292,7 @@ class Status < ApplicationRecord
   end
 
   def dtl?
-    tags.where(name: 'kmyblue').exists?
+    tags.where(name: DTL_TAG).exists?
   end
 
   def emojis

app/serializers/initial_state_serializer.rb

@@ -2,6 +2,7 @@
 
 class InitialStateSerializer < ActiveModel::Serializer
   include RoutingHelper
+  include DtlHelper
 
   attributes :meta, :compose, :accounts,
              :media_attachments, :settings,
@@ -35,6 +36,7 @@ class InitialStateSerializer < ActiveModel::Serializer
       trends_as_landing_page: Setting.trends_as_landing_page,
       status_page_url: Setting.status_page_url,
       sso_redirect: sso_redirect,
+      dtl_tag: DTL_ENABLED ? DTL_TAG : nil,
     }
 
     if object.current_account

app/services/delivery_antenna_service.rb

@@ -2,6 +2,7 @@
 
 class DeliveryAntennaService
   include FormattingHelper
+  include DtlHelper
 
   def call(status, update, **options)
     @status = status
@@ -23,6 +24,8 @@ class DeliveryAntennaService
 
   def delivery!
     must_dtl_tag = @account.dissubscribable
+    return if must_dtl_tag && !DTL_ENABLED
+
     tag_ids = @status.tags.pluck(:id)
     domain = @account.domain || Rails.configuration.x.local_domain
     follower_ids = @status.unlisted_visibility? ? @status.account.followers.pluck(:id) : []
@@ -35,7 +38,7 @@ class DeliveryAntennaService
 
     antennas = Antenna.where(id: antennas.select(:id))
     if must_dtl_tag
-      dtl_tag = Tag.find_or_create_by_names('kmyblue').first
+      dtl_tag = Tag.find_or_create_by_names(DTL_TAG).first
       return if !dtl_tag || tag_ids.exclude?(dtl_tag.id)
 
       antennas = antennas.left_joins(:antenna_tags).where(antenna_tags: { tag_id: dtl_tag.id })

app/services/fan_out_on_write_service.rb

@@ -2,6 +2,7 @@
 
 class FanOutOnWriteService < BaseService
   include Redisable
+  include DtlHelper
 
   # Push a status into home and mentions feeds
   # @param [Status] status
@@ -51,7 +52,7 @@ class FanOutOnWriteService < BaseService
     when :public, :unlisted, :public_unlisted, :login, :private
       deliver_to_all_followers!
       deliver_to_lists!
-      deliver_to_antennas! if !@account.dissubscribable || (@status.dtl? && @account.user&.setting_dtl_force_subscribable && @status.tags.exists?(name: 'kmyblue'))
+      deliver_to_antennas! if !@account.dissubscribable || (@status.dtl? && DTL_ENABLED && @account.user&.setting_dtl_force_subscribable && @status.tags.exists?(name: DTL_TAG))
       deliver_to_stl_antennas!
       deliver_to_ltl_antennas!
     when :limited

app/services/post_status_service.rb

@@ -3,6 +3,7 @@
 class PostStatusService < BaseService
   include Redisable
   include LanguagesHelper
+  include DtlHelper
 
   MIN_SCHEDULE_OFFSET = 5.minutes.freeze
 
@@ -101,8 +102,10 @@ class PostStatusService < BaseService
   end
 
   def overwrite_dtl_post
+    return unless DTL_ENABLED
+
     raw_tags = Extractor.extract_hashtags(@text)
-    return if raw_tags.exclude?('kmyblue')
+    return if raw_tags.exclude?(DTL_TAG)
     return unless %i(public public_unlisted unlisted).include?(@visibility)
 
     @visibility = :unlisted if @account.user&.setting_dtl_force_with_tag == :full

app/views/settings/preferences/other/show.html.haml

@@ -42,15 +42,17 @@
     .fields-group
       = ff.input :'web.enable_login_privacy', wrapper: :with_label, kmyblue: true, label: I18n.t('simple_form.labels.defaults.setting_enable_login_privacy'), hint: false
 
+    - if @dtl_enabled
+
       %h4= t 'preferences.dtl'
 
-    %p.hint= t 'preferences.dtl_hint'
+      %p.hint= t 'preferences.dtl_hint', tag: @dtl_tag
 
       .fields-group
-      = ff.input :'web.enable_dtl_menu', wrapper: :with_label, kmyblue: true, label: I18n.t('simple_form.labels.defaults.setting_dtl_menu'), hint: I18n.t('simple_form.hints.defaults.setting_dtl_menu')
+        = ff.input :'web.enable_dtl_menu', wrapper: :with_label, kmyblue: true, label: I18n.t('simple_form.labels.defaults.setting_dtl_menu')
 
       .fields-group
-      = ff.input :dtl_force_with_tag, kmyblue: true, collection: ['full', 'searchability', 'none'], label_method: lambda { |item| safe_join([t("simple_form.labels.dtl_force_with_tag.#{item}")]) }, as: :radio_buttons, collection_wrapper_tag: 'ul', item_wrapper_tag: 'li', wrapper: :with_floating_label, label: I18n.t('simple_form.labels.defaults.setting_dtl_force_with_tag'), hint: I18n.t('simple_form.hints.defaults.setting_dtl_force_with_tag')
+        = ff.input :dtl_force_with_tag, kmyblue: true, collection: ['full', 'searchability', 'none'], label_method: lambda { |item| safe_join([t("simple_form.labels.dtl_force_with_tag.#{item}")]) }, as: :radio_buttons, collection_wrapper_tag: 'ul', item_wrapper_tag: 'li', wrapper: :with_floating_label, label: I18n.t('simple_form.labels.defaults.setting_dtl_force_with_tag'), hint: I18n.t('simple_form.hints.defaults.setting_dtl_force_with_tag', tag: @dtl_tag)
 
       .fields-group
         = ff.input :dtl_force_subscribable, wrapper: :with_label, kmyblue: true, label: I18n.t('simple_form.labels.defaults.setting_dtl_force_subscribable'), hint: I18n.t('simple_form.hints.defaults.setting_dtl_force_subscribable')

config/locales/en.yml

@@ -1645,7 +1645,7 @@ en:
       too_many_options: can't contain more than %{max} items
   preferences:
     dtl: Deep timeline
-    dtl_hint: "You can join deep timeline with #kmyblue tag. Following settings make convenient to use deep timeline."
+    dtl_hint: "You can join deep timeline with #%{tag} tag. Following settings make convenient to use deep timeline."
     other: Other
     posting_defaults: Posting defaults
     public_timelines: Public timelines

config/locales/ja.yml

@@ -1585,7 +1585,7 @@ ja:
       too_many_options: は%{max}個までです
   preferences:
     dtl: ディープタイムライン
-    dtl_hint: "#kmyblue ハッシュタグに参加することで、ディープタイムラインに投稿できます。ここではディープタイムラインを利用しやすくするための設定ができます。"
+    dtl_hint: "#%{tag} ハッシュタグに参加することで、ディープタイムラインに投稿できます。ここではディープタイムラインを利用しやすくするための設定ができます。"
     other: その他
     posting_defaults: デフォルトの投稿設定
     public_timelines: 公開タイムライン

config/locales/simple_form.en.yml

@@ -67,7 +67,7 @@ en:
         setting_display_media_hide_all: Always hide media
         setting_display_media_show_all: Always show media
         setting_dtl_force_subscribable: Your post can be detected local user's antenna to subscribe deep timeline
-        setting_dtl_force_with_tag: "With using #kmyblue tag, your post settings will be changed forcibly"
+        setting_dtl_force_with_tag: "With using #%{tag} tag, your post settings will be changed forcibly"
         setting_dtl_menu: Show DTL menu on web
         setting_use_blurhash: Gradients are based on the colors of the hidden visuals but obfuscate any details
         setting_use_pending_items: Hide timeline updates behind a click instead of automatically scrolling the feed

config/locales/simple_form.ja.yml

@@ -69,7 +69,7 @@ ja:
         setting_display_media_hide_all: メディアを常に隠す
         setting_display_media_show_all: メディアを常に表示する
         setting_dtl_force_subscribable: 購読拒否設定に関係なく、ディープタイムラインに向けた投稿はアンテナに掲載されます。ディープタイムラインをアンテナ経由で閲覧している人にあなたの発言が届きます
-        setting_dtl_force_with_tag: "ハッシュタグ #kmyblue をつけて投稿するとき、公開範囲と検索許可を強制的に置き換えるかを設定します"
+        setting_dtl_force_with_tag: "ハッシュタグ #%{tag} をつけて投稿するとき、公開範囲と検索許可を強制的に置き換えるかを設定します"
         setting_emoji_reaction_streaming_notify_impl2: 当該サーバーの独自機能に対応したアプリを利用時に、スタンプ機能を利用できます。動作確認していないため（そもそもそのようなアプリ自体を確認できていないため）正しく動かない場合があります
         setting_hide_network: フォローとフォロワーの情報がプロフィールページで見られないようにします
         setting_link_preview: プレビュー生成を停止することは、センシティブなサイトへのリンクを頻繁に投稿する人にも有効かもしれません