Refactor JSON templates to be generated with ActiveModelSerializers instead of Rabl (#4090)

app/serializers/rest/status_serializer.rb

@@ -0,0 +1,93 @@
+# frozen_string_literal: true
+
+class REST::StatusSerializer < ActiveModel::Serializer
+  attributes :id, :created_at, :in_reply_to_id, :in_reply_to_account_id,
+             :sensitive, :spoiler_text, :visibility, :language,
+             :uri, :content, :url, :reblogs_count, :favourites_count
+
+  attribute :favourited, if: :current_user?
+  attribute :reblogged, if: :current_user?
+  attribute :muted, if: :current_user?
+
+  belongs_to :reblog, serializer: REST::StatusSerializer
+  belongs_to :application
+  belongs_to :account, serializer: REST::AccountSerializer
+
+  has_many :media_attachments, serializer: REST::MediaAttachmentSerializer
+  has_many :mentions
+  has_many :tags
+
+  def current_user?
+    !current_user.nil?
+  end
+
+  def uri
+    TagManager.instance.uri_for(object)
+  end
+
+  def content
+    Formatter.instance.format(object)
+  end
+
+  def url
+    TagManager.instance.url_for(object)
+  end
+
+  def favourited
+    if instance_options && instance_options[:relationships]
+      instance_options[:relationships].favourites_map[object.id] || false
+    else
+      current_user.account.favourited?(object)
+    end
+  end
+
+  def reblogged
+    if instance_options && instance_options[:relationships]
+      instance_options[:relationships].reblogs_map[object.id] || false
+    else
+      current_user.account.reblogged?(object)
+    end
+  end
+
+  def muted
+    if instance_options && instance_options[:relationships]
+      instance_options[:relationships].mutes_map[object.conversation_id] || false
+    else
+      current_user.account.muting_conversation?(object.conversation)
+    end
+  end
+
+  class ApplicationSerializer < ActiveModel::Serializer
+    attributes :name, :website
+  end
+
+  class MentionSerializer < ActiveModel::Serializer
+    attributes :id, :username, :url, :acct
+
+    def id
+      object.account_id
+    end
+
+    def username
+      object.account_username
+    end
+
+    def url
+      TagManager.instance.url_for(object.account)
+    end
+
+    def acct
+      object.account_acct
+    end
+  end
+
+  class TagSerializer < ActiveModel::Serializer
+    include RoutingHelper
+
+    attributes :name, :url
+
+    def url
+      tag_url(object)
+    end
+  end
+end