Add setting column and its serializer to Account

app/helpers/context_helper.rb

@@ -26,6 +26,7 @@ module ContextHelper
     suspended: { 'toot' => 'http://joinmastodon.org/ns#', 'suspended' => 'toot:suspended' },
     quote_uri: { 'fedibird' => 'http://fedibird.com/ns#', 'quoteUri' => 'fedibird:quoteUri' },
     expiry: { 'fedibird' => 'http://fedibird.com/ns#', 'expiry' => 'fedibird:expiry' },
+    other_setting: { 'fedibird' => 'http://fedibird.com/ns#', 'otherSetting' => 'fedibird:otherSetting' },
   }.freeze
 
   def full_context

app/models/account.rb

@@ -47,6 +47,7 @@
 #  devices_url                   :string
 #  suspension_origin             :integer
 #  sensitized_at                 :datetime
+#  settings                      :jsonb            default("{}"), not null
 #
 
 class Account < ApplicationRecord
@@ -396,6 +397,14 @@ class Account < ApplicationRecord
     ActionController::Base.helpers.strip_tags(note)
   end
 
+  def settings
+    self[:settings].class == String ? {} : self[:settings]
+  end
+
+  def other_settings
+    settings
+  end
+
   class Field < ActiveModelSerializers::Model
     attributes :name, :value, :verified_at, :account
 

app/serializers/activitypub/actor_serializer.rb

@@ -7,7 +7,7 @@ class ActivityPub::ActorSerializer < ActivityPub::Serializer
 
   context_extensions :manually_approves_followers, :featured, :also_known_as,
                      :moved_to, :property_value, :identity_proof,
-                     :discoverable, :olm, :suspended
+                     :discoverable, :olm, :suspended, :other_setting
 
   attributes :id, :type, :following, :followers,
              :inbox, :outbox, :featured, :featured_tags,
@@ -25,6 +25,8 @@ class ActivityPub::ActorSerializer < ActivityPub::Serializer
   attribute :also_known_as, if: :also_known_as?
   attribute :suspended, if: :suspended?
 
+  has_many :virtual_other_settings, key: :other_setting
+
   class EndpointsSerializer < ActivityPub::Serializer
     include RoutingHelper
 
@@ -162,6 +164,16 @@ class ActivityPub::ActorSerializer < ActivityPub::Serializer
     object.created_at.midnight.iso8601
   end
 
+  def virtual_other_settings
+    object.other_settings.map do |k, v|
+      {
+        type: 'PropertyValue',
+        name: k,
+        value: v,
+      }
+    end
+  end
+
   class CustomEmojiSerializer < ActivityPub::EmojiSerializer
   end
 

app/serializers/rest/account_serializer.rb

@@ -22,6 +22,7 @@ class REST::AccountSerializer < ActiveModel::Serializer
   end
 
   has_many :fields
+  has_many :other_settings
 
   def id
     object.id.to_s
@@ -91,6 +92,10 @@ class REST::AccountSerializer < ActiveModel::Serializer
     object.suspended? ? [] : object.fields
   end
 
+  def other_settings
+    object.suspended? ? [] : object.other_settings
+  end
+
   def suspended
     object.suspended?
   end

app/services/activitypub/process_account_service.rb

@@ -98,6 +98,7 @@ class ActivityPub::ProcessAccountService < BaseService
     @account.note                    = @json['summary'] || ''
     @account.locked                  = @json['manuallyApprovesFollowers'] || false
     @account.fields                  = property_values || {}
+    @account.settings                = defer_settings.merge(other_settings || {})
     @account.also_known_as           = as_array(@json['alsoKnownAs'] || []).map { |item| value_or_id(item) }
     @account.discoverable            = @json['discoverable'] || false
   end
@@ -211,6 +212,18 @@ class ActivityPub::ProcessAccountService < BaseService
     as_array(@json['attachment']).select { |attachment| attachment['type'] == 'PropertyValue' }.map { |attachment| attachment.slice('name', 'value') }
   end
 
+  DEFER_SETTINGS_KEYS = %w(
+  ).freeze
+
+  def defer_settings
+    (@account.settings || {}).select { |key, _| DEFER_SETTINGS_KEYS.include?(key) }
+  end
+
+  def other_settings
+    return unless @json['otherSetting'].is_a?(Array)
+    @json['otherSetting'].each_with_object({}) { |v, h| h.merge!({v['name'] => v['value']}) if v['type'] == 'PropertyValue' }
+  end
+
   def mismatching_origin?(url)
     needle   = Addressable::URI.parse(url).host
     haystack = Addressable::URI.parse(@uri).host

db/migrate/20220202115057_add_settings_to_accounts.rb

@@ -0,0 +1,17 @@
+require Rails.root.join('lib', 'mastodon', 'migration_helpers')
+
+class AddSettingsToAccounts < ActiveRecord::Migration[6.1]
+  include Mastodon::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  def up
+    safety_assured { add_column_with_default :accounts, :settings, :jsonb, default: '{}', allow_null: false }
+    safety_assured { add_index :accounts, :settings, using: 'gin', algorithm: :concurrently, name: :index_accounts_on_settings }
+  end
+
+  def down
+    remove_index :accounts, name: :index_accounts_on_settings
+    remove_column :accounts, :settings
+  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.define(version: 2021_12_13_083734) do
+ActiveRecord::Schema.define(version: 2022_02_02_115057) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -207,9 +207,11 @@ ActiveRecord::Schema.define(version: 2021_12_13_083734) do
     t.string "devices_url"
     t.integer "suspension_origin"
     t.datetime "sensitized_at"
+    t.jsonb "settings", default: "{}", null: false
     t.index "(((setweight(to_tsvector('simple'::regconfig, (display_name)::text), 'A'::\"char\") || setweight(to_tsvector('simple'::regconfig, (username)::text), 'B'::\"char\")) || setweight(to_tsvector('simple'::regconfig, (COALESCE(domain, ''::character varying))::text), 'C'::\"char\")))", name: "search_index", using: :gin
     t.index "lower((username)::text), COALESCE(lower((domain)::text), ''::text)", name: "index_accounts_on_username_and_domain_lower", unique: true
     t.index ["moved_to_account_id"], name: "index_accounts_on_moved_to_account_id"
+    t.index ["settings"], name: "index_accounts_on_settings", using: :gin
     t.index ["uri"], name: "index_accounts_on_uri"
     t.index ["url"], name: "index_accounts_on_url"
   end