Migrate to new theming infrastructure (#37612)

db/migrate/20260209142402_migrate_default_theme_setting.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+class MigrateDefaultThemeSetting < ActiveRecord::Migration[8.0]
+  class Setting < ApplicationRecord; end
+
+  def up
+    Setting.reset_column_information
+
+    setting = Setting.find_by(var: 'theme')
+    return unless setting.present? && setting.attributes['value'].present? && %w(mastodon-light contrast system).include?(setting.attributes['value'])
+
+    Setting.upsert(
+      {
+        var: 'theme',
+        value: "--- default\n",
+      },
+      unique_by: index_exists?(:settings, [:thing_type, :thing_id, :var]) ? [:thing_type, :thing_id, :var] : :var
+    )
+  end
+
+  def down; end
+end

db/migrate/20260209143308_migrate_user_theme.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+class MigrateUserTheme < ActiveRecord::Migration[8.0]
+  disable_ddl_transaction!
+
+  # Dummy classes, to make migration possible across version changes
+  class User < ApplicationRecord; end
+
+  def up
+    User.where.not(settings: nil).find_each do |user|
+      settings = Oj.load(user.attributes_before_type_cast['settings'])
+      next if settings.nil? || settings['theme'].blank? || %w(system default mastodon-light contrast).exclude?(settings['theme'])
+
+      case settings['theme']
+      when 'default'
+        settings['web.color_scheme'] = 'dark'
+        settings['web.contrast'] = 'auto'
+      when 'contrast'
+        settings['web.color_scheme'] = 'dark'
+        settings['web.contrast'] = 'high'
+      when 'mastodon-light'
+        settings['web.color_scheme'] = 'light'
+        settings['web.contrast'] = 'auto'
+      end
+
+      settings['theme'] = 'default'
+
+      user.update_column('settings', Oj.dump(settings))
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.0].define(version: 2026_01_27_141820) do
+ActiveRecord::Schema[8.0].define(version: 2026_02_09_143308) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_catalog.plpgsql"
 
@@ -1127,6 +1127,7 @@ ActiveRecord::Schema[8.0].define(version: 2026_01_27_141820) do
     t.string "poll_options", array: true
     t.boolean "sensitive"
     t.bigint "quote_id"
+    t.string "content_type"
     t.index ["account_id"], name: "index_status_edits_on_account_id"
     t.index ["status_id"], name: "index_status_edits_on_status_id"
   end
@@ -1189,6 +1190,8 @@ ActiveRecord::Schema[8.0].define(version: 2026_01_27_141820) do
     t.bigint "ordered_media_attachment_ids", array: true
     t.datetime "fetched_replies_at"
     t.integer "quote_approval_policy", default: 0, null: false
+    t.boolean "local_only"
+    t.string "content_type"
     t.index ["account_id", "id", "visibility", "updated_at"], name: "index_statuses_20190820", order: { id: :desc }, where: "(deleted_at IS NULL)"
     t.index ["account_id"], name: "index_statuses_on_account_id"
     t.index ["conversation_id"], name: "index_statuses_on_conversation_id"