Improve support for aspects/circles (#8950)

* Add silent column to mentions

* Save silent mentions in ActivityPub Create handler and optimize it

Move networking calls out of the database transaction

* Add "limited" visibility level masked as "private" in the API

Unlike DMs, limited statuses are pushed into home feeds. The access
control rules between direct and limited statuses is almost the same,
except for counter and conversation logic

* Ensure silent column is non-null, add spec

* Ensure filters don't check silent mentions for blocks/mutes

As those are "this person is also allowed to see" rather than "this
person is involved", therefore does not warrant filtering

* Clean up code

* Use Status#active_mentions to limit returned mentions

* Fix code style issues

* Use Status#active_mentions in Notification

And remove stream_entry eager-loading from Notification

5 files changed, 21 insertions, 8 deletions

diff --git a/app/models/account_conversation.rb b/app/models/account_conversation.rb
index a7205ec1a..c12c8d233 100644
--- a/app/models/account_conversation.rb
+++ b/app/models/account_conversation.rb
@@ -85,7 +85,7 @@ class AccountConversation < ApplicationRecord
     private
 
     def participants_from_status(recipient, status)
-      ((status.mentions.pluck(:account_id) + [status.account_id]).uniq - [recipient.id]).sort
+      ((status.active_mentions.pluck(:account_id) + [status.account_id]).uniq - [recipient.id]).sort
     end
   end
 
diff --git a/app/models/mention.rb b/app/models/mention.rb
index 8ab886b18..d01a88e32 100644
--- a/app/models/mention.rb
+++ b/app/models/mention.rb
@@ -8,6 +8,7 @@
 #  created_at :datetime         not null
 #  updated_at :datetime         not null
 #  account_id :bigint(8)
+#  silent     :boolean          default(FALSE), not null
 #
 
 class Mention < ApplicationRecord
@@ -18,10 +19,17 @@ class Mention < ApplicationRecord
 
   validates :account, uniqueness: { scope: :status }
 
+  scope :active, -> { where(silent: false) }
+  scope :silent, -> { where(silent: true) }
+
   delegate(
     :username,
     :acct,
     to: :account,
     prefix: true
   )
+
+  def active?
+    !silent?
+  end
 end
diff --git a/app/models/notification.rb b/app/models/notification.rb
index b9bec0808..78b180301 100644
--- a/app/models/notification.rb
+++ b/app/models/notification.rb
@@ -24,7 +24,7 @@ class Notification < ApplicationRecord
     favourite:      'Favourite',
   }.freeze
 
-  STATUS_INCLUDES = [:account, :application, :stream_entry, :media_attachments, :tags, mentions: :account, reblog: [:stream_entry, :account, :application, :media_attachments, :tags, mentions: :account]].freeze
+  STATUS_INCLUDES = [:account, :application, :media_attachments, :tags, active_mentions: :account, reblog: [:account, :application, :media_attachments, :tags, active_mentions: :account]].freeze
 
   belongs_to :account, optional: true
   belongs_to :from_account, class_name: 'Account', optional: true
diff --git a/app/models/status.rb b/app/models/status.rb
index f61bd0fee..b18cb56b2 100644
--- a/app/models/status.rb
+++ b/app/models/status.rb
@@ -37,7 +37,7 @@ class Status < ApplicationRecord
 
   update_index('statuses#status', :proper) if Chewy.enabled?
 
-  enum visibility: [:public, :unlisted, :private, :direct], _suffix: :visibility
+  enum visibility: [:public, :unlisted, :private, :direct, :limited], _suffix: :visibility
 
   belongs_to :application, class_name: 'Doorkeeper::Application', optional: true
 
@@ -51,7 +51,8 @@ class Status < ApplicationRecord
   has_many :favourites, inverse_of: :status, dependent: :destroy
   has_many :reblogs, foreign_key: 'reblog_of_id', class_name: 'Status', inverse_of: :reblog, dependent: :destroy
   has_many :replies, foreign_key: 'in_reply_to_id', class_name: 'Status', inverse_of: :thread
-  has_many :mentions, dependent: :destroy
+  has_many :mentions, dependent: :destroy, inverse_of: :status
+  has_many :active_mentions, -> { active }, class_name: 'Mention', inverse_of: :status
   has_many :media_attachments, dependent: :nullify
 
   has_and_belongs_to_many :tags
@@ -89,7 +90,7 @@ class Status < ApplicationRecord
                    :status_stat,
                    :tags,
                    :stream_entry,
-                   mentions: :account,
+                   active_mentions: :account,
                    reblog: [
                      :account,
                      :application,
@@ -98,7 +99,7 @@ class Status < ApplicationRecord
                      :media_attachments,
                      :conversation,
                      :status_stat,
-                     mentions: :account,
+                     active_mentions: :account,
                    ],
                    thread: :account
 
@@ -171,7 +172,11 @@ class Status < ApplicationRecord
   end
 
   def hidden?
-    private_visibility? || direct_visibility?
+    private_visibility? || direct_visibility? || limited_visibility?
+  end
+
+  def distributable?
+    public_visibility? || unlisted_visibility?
   end
 
   def with_media?
diff --git a/app/models/stream_entry.rb b/app/models/stream_entry.rb
index a2f273281..1a9afc5c7 100644
--- a/app/models/stream_entry.rb
+++ b/app/models/stream_entry.rb
@@ -48,7 +48,7 @@ class StreamEntry < ApplicationRecord
   end
 
   def mentions
-    orphaned? ? [] : status.mentions.map(&:account)
+    orphaned? ? [] : status.active_mentions.map(&:account)
   end
 
   private