Stop trying to shoehorn all Salmon updates into the poor database-connected

StreamEntry model. Simply render Salmon slaps as they are needed

22 files changed, 304 insertions, 266 deletions

diff --git a/app/controllers/accounts_controller.rb b/app/controllers/accounts_controller.rb
index b837f006e62..00f8047fde6 100644
--- a/app/controllers/accounts_controller.rb
+++ b/app/controllers/accounts_controller.rb
@@ -16,7 +16,7 @@ class AccountsController < ApplicationController
       end
 
       format.atom do
-        @entries = @account.stream_entries.order('id desc').where(hidden: false).with_includes.paginate_by_max_id(20, params[:max_id], params[:since_id])
+        @entries = @account.stream_entries.order('id desc').where(activity_type: 'Status').where(hidden: false).with_includes.paginate_by_max_id(20, params[:max_id], params[:since_id])
       end
 
       format.activitystreams2
diff --git a/app/models/block.rb b/app/models/block.rb
index d0662b68511..9c55703c972 100644
--- a/app/models/block.rb
+++ b/app/models/block.rb
@@ -2,27 +2,10 @@
 
 class Block < ApplicationRecord
   include Paginable
-  include Streamable
 
   belongs_to :account
   belongs_to :target_account, class_name: 'Account'
 
   validates :account, :target_account, presence: true
   validates :account_id, uniqueness: { scope: :target_account_id }
-
-  def verb
-    destroyed? ? :unblock : :block
-  end
-
-  def target
-    target_account
-  end
-
-  def hidden?
-    true
-  end
-
-  def title
-    destroyed? ? "#{account.acct} is no longer blocking #{target_account.acct}" : "#{account.acct} blocked #{target_account.acct}"
-  end
 end
diff --git a/app/models/favourite.rb b/app/models/favourite.rb
index 82f8c525863..67a2938889d 100644
--- a/app/models/favourite.rb
+++ b/app/models/favourite.rb
@@ -2,7 +2,6 @@
 
 class Favourite < ApplicationRecord
   include Paginable
-  include Streamable
 
   belongs_to :account, inverse_of: :favourites
   belongs_to :status,  inverse_of: :favourites
@@ -11,26 +10,6 @@ class Favourite < ApplicationRecord
 
   validates :status_id, uniqueness: { scope: :account_id }
 
-  def verb
-    destroyed? ? :unfavorite : :favorite
-  end
-
-  def title
-    destroyed? ? "#{account.acct} no longer favourites a status by #{status.account.acct}" : "#{account.acct} favourited a status by #{status.account.acct}"
-  end
-
-  def thread
-    status
-  end
-
-  def target
-    thread
-  end
-
-  def hidden?
-    status.private_visibility?
-  end
-
   before_validation do
     self.status = status.reblog if status.reblog?
   end
diff --git a/app/models/follow.rb b/app/models/follow.rb
index e25c2bc9f84..57db8c46227 100644
--- a/app/models/follow.rb
+++ b/app/models/follow.rb
@@ -2,7 +2,6 @@
 
 class Follow < ApplicationRecord
   include Paginable
-  include Streamable
 
   belongs_to :account
   belongs_to :target_account, class_name: 'Account'
@@ -11,16 +10,4 @@ class Follow < ApplicationRecord
 
   validates :account, :target_account, presence: true
   validates :account_id, uniqueness: { scope: :target_account_id }
-
-  def verb
-    destroyed? ? :unfollow : :follow
-  end
-
-  def target
-    target_account
-  end
-
-  def title
-    destroyed? ? "#{account.acct} is no longer following #{target_account.acct}" : "#{account.acct} started following #{target_account.acct}"
-  end
 end
diff --git a/app/models/follow_request.rb b/app/models/follow_request.rb
index 2755ba0abba..4224ab15d97 100644
--- a/app/models/follow_request.rb
+++ b/app/models/follow_request.rb
@@ -2,7 +2,6 @@
 
 class FollowRequest < ApplicationRecord
   include Paginable
-  include Streamable
 
   belongs_to :account
   belongs_to :target_account, class_name: 'Account'
@@ -13,9 +12,6 @@ class FollowRequest < ApplicationRecord
   validates :account_id, uniqueness: { scope: :target_account_id }
 
   def authorize!
-    @verb   = :authorize
-    @target = clone.freeze
-
     account.follow!(target_account)
     MergeWorker.perform_async(target_account.id, account.id)
 
@@ -23,44 +19,6 @@ class FollowRequest < ApplicationRecord
   end
 
   def reject!
-    @verb   = :reject
-    @target = clone.freeze
-
     destroy!
   end
-
-  def verb
-    destroyed? ? (@verb || :delete) : :request_friend
-  end
-
-  def target
-    if destroyed? && @verb
-      @target
-    else
-      target_account
-    end
-  end
-
-  def hidden?
-    true
-  end
-
-  def needs_stream_entry?
-    true
-  end
-
-  def title
-    if destroyed?
-      case @verb
-      when :authorize
-        "#{target_account.acct} authorized #{account.acct}'s request to follow"
-      when :reject
-        "#{target_account.acct} rejected #{account.acct}'s request to follow"
-      else
-        "#{account.acct} withdrew the request to follow #{target_account.acct}"
-      end
-    else
-      "#{account.acct} requested to follow #{target_account.acct}"
-    end
-  end
 end
diff --git a/app/models/stream_entry.rb b/app/models/stream_entry.rb
index bb68b1e141f..8b41c8c39f5 100644
--- a/app/models/stream_entry.rb
+++ b/app/models/stream_entry.rb
@@ -6,17 +6,13 @@ class StreamEntry < ApplicationRecord
   belongs_to :account, inverse_of: :stream_entries
   belongs_to :activity, polymorphic: true
 
-  belongs_to :status,         foreign_type: 'Status',        foreign_key: 'activity_id'
-  belongs_to :follow,         foreign_type: 'Follow',        foreign_key: 'activity_id'
-  belongs_to :favourite,      foreign_type: 'Favourite',     foreign_key: 'activity_id'
-  belongs_to :block,          foreign_type: 'Block',         foreign_key: 'activity_id'
-  belongs_to :follow_request, foreign_type: 'FollowRequest', foreign_key: 'activity_id'
+  belongs_to :status, foreign_type: 'Status', foreign_key: 'activity_id', inverse_of: :stream_entry
 
   validates :account, :activity, presence: true
 
   STATUS_INCLUDES = [:account, :stream_entry, :media_attachments, :tags, mentions: :account, reblog: [:stream_entry, :account, mentions: :account], thread: [:stream_entry, :account]].freeze
 
-  scope :with_includes, -> { includes(:account, status: STATUS_INCLUDES, favourite: [:account, :stream_entry, status: STATUS_INCLUDES], follow: [:target_account, :stream_entry]) }
+  scope :with_includes, -> { includes(:account, status: STATUS_INCLUDES) }
 
   def object_type
     if orphaned?
diff --git a/app/services/authorize_follow_service.rb b/app/services/authorize_follow_service.rb
index 5370b4b61a5..2e0b6d26cf1 100644
--- a/app/services/authorize_follow_service.rb
+++ b/app/services/authorize_follow_service.rb
@@ -1,12 +1,37 @@
 # frozen_string_literal: true
 
 class AuthorizeFollowService < BaseService
-  include StreamEntryRenderer
-
   def call(source_account, target_account)
     follow_request = FollowRequest.find_by!(account: source_account, target_account: target_account)
     follow_request.authorize!
-    NotificationWorker.perform_async(stream_entry_to_xml(follow_request.stream_entry), target_account.id, source_account.id) unless source_account.local?
-    follow_request.stream_entry.destroy
+    NotificationWorker.perform_async(build_xml(follow_request), target_account.id, source_account.id) unless source_account.local?
+  end
+
+  private
+
+  def build_xml(follow_request)
+    Nokogiri::XML::Builder.new do |xml|
+      entry(xml, true) do
+        author(xml) do
+          include_author xml, follow_request.target_account
+        end
+
+        object_type xml, :activity
+        verb xml, :authorize
+
+        target(xml) do
+          author(xml) do
+            include_author xml, follow_request.account
+          end
+
+          object_type xml, :activity
+          verb xml, :request_friend
+
+          target(xml) do
+            include_author xml, follow_request.target_account
+          end
+        end
+      end
+    end.to_xml
   end
 end
diff --git a/app/services/block_service.rb b/app/services/block_service.rb
index 095d2a8eb6e..bcd8c44c414 100644
--- a/app/services/block_service.rb
+++ b/app/services/block_service.rb
@@ -12,6 +12,27 @@ class BlockService < BaseService
     block = account.block!(target_account)
 
     BlockWorker.perform_async(account.id, target_account.id)
-    NotificationWorker.perform_async(stream_entry_to_xml(block.stream_entry), account.id, target_account.id) unless target_account.local?
+    NotificationWorker.perform_async(build_xml(block), account.id, target_account.id) unless target_account.local?
+  end
+
+  private
+
+  def build_xml(block)
+    Nokogiri::XML::Builder.new do |xml|
+      entry(xml, true) do
+        title xml, "#{block.account.acct} no longer wishes to interact with #{block.target_account.acct}"
+
+        author(xml) do
+          include_author xml, block.account
+        end
+
+        object_type xml, :activity
+        verb xml, :block
+
+        target(xml) do
+          include_author xml, block.target_account
+        end
+      end
+    end.to_xml
   end
 end
diff --git a/app/services/favourite_service.rb b/app/services/favourite_service.rb
index ce1722b7719..11585250f85 100644
--- a/app/services/favourite_service.rb
+++ b/app/services/favourite_service.rb
@@ -1,8 +1,6 @@
 # frozen_string_literal: true
 
 class FavouriteService < BaseService
-  include StreamEntryRenderer
-
   # Favourite a status and notify remote user
   # @param [Account] account
   # @param [Status] status
@@ -12,14 +10,37 @@ class FavouriteService < BaseService
 
     favourite = Favourite.create!(account: account, status: status)
 
-    Pubsubhubbub::DistributionWorker.perform_async(favourite.stream_entry.id)
-
     if status.local?
       NotifyService.new.call(favourite.status.account, favourite)
     else
-      NotificationWorker.perform_async(stream_entry_to_xml(favourite.stream_entry), account.id, status.account_id)
+      NotificationWorker.perform_async(build_xml(favourite), account.id, status.account_id)
     end
 
     favourite
   end
+
+  private
+
+  def build_xml(favourite)
+    Nokogiri::XML::Builder.new do |xml|
+      entry(xml, true) do
+        title xml, "#{favourite.account.acct} favourited a status by #{favourite.status.account.acct}"
+
+        author(xml) do
+          include_author xml, favourite.account
+        end
+
+        object_type xml, :activity
+        verb xml, :favourite
+
+        target(xml) do
+          author(xml) do
+            include_author xml, favourite.status.account
+          end
+
+          include_entry xml, favourite.status.stream_entry
+        end
+      end
+    end.to_xml
+  end
 end
diff --git a/app/services/follow_service.rb b/app/services/follow_service.rb
index ac0392d16b2..5a4250636f6 100644
--- a/app/services/follow_service.rb
+++ b/app/services/follow_service.rb
@@ -7,7 +7,7 @@ class FollowService < BaseService
   # @param [Account] source_account From which to follow
   # @param [String] uri User URI to follow in the form of username@domain
   def call(source_account, uri)
-    target_account = follow_remote_account_service.call(uri)
+    target_account = FollowRemoteAccountService.new.call(uri)
 
     raise ActiveRecord::RecordNotFound if target_account.nil? || target_account.id == source_account.id || target_account.suspended?
     raise Mastodon::NotPermitted       if target_account.blocking?(source_account) || source_account.blocking?(target_account)
@@ -27,7 +27,7 @@ class FollowService < BaseService
     if target_account.local?
       NotifyService.new.call(target_account, follow_request)
     else
-      NotificationWorker.perform_async(stream_entry_to_xml(follow_request.stream_entry), source_account.id, target_account.id)
+      NotificationWorker.perform_async(build_follow_request_xml(follow_request), source_account.id, target_account.id)
       AfterRemoteFollowRequestWorker.perform_async(follow_request.id)
     end
 
@@ -40,13 +40,12 @@ class FollowService < BaseService
     if target_account.local?
       NotifyService.new.call(target_account, follow)
     else
-      subscribe_service.call(target_account) unless target_account.subscribed?
-      NotificationWorker.perform_async(stream_entry_to_xml(follow.stream_entry), source_account.id, target_account.id)
+      SubscribeService.new.call(target_account) unless target_account.subscribed?
+      NotificationWorker.perform_async(build_follow_xml(follow), source_account.id, target_account.id)
       AfterRemoteFollowWorker.perform_async(follow.id)
     end
 
     MergeWorker.perform_async(target_account.id, source_account.id)
-    Pubsubhubbub::DistributionWorker.perform_async(follow.stream_entry.id)
 
     follow
   end
@@ -55,11 +54,41 @@ class FollowService < BaseService
     Redis.current
   end
 
-  def follow_remote_account_service
-    @follow_remote_account_service ||= FollowRemoteAccountService.new
+  def build_follow_request_xml(follow_request)
+    Nokogiri::XML::Builder.new do |xml|
+      entry(xml, true) do
+        title xml, "#{follow_request.account.acct} requested to follow #{follow_request.target_account.acct}"
+
+        author(xml) do
+          include_author xml, follow_request.account
+        end
+
+        object_type xml, :activity
+        verb xml, :request_friend
+
+        target(xml) do
+          include_author xml, follow_request.target_account
+        end
+      end
+    end.to_xml
   end
 
-  def subscribe_service
-    @subscribe_service ||= SubscribeService.new
+  def build_follow_xml(follow)
+    Nokogiri::XML::Builder.new do |xml|
+      entry(xml, true) do
+        title xml, "#{follow.account.acct} started following #{follow.target_account.acct}"
+
+        author(xml) do
+          include_author xml, follow.account
+        end
+
+        object_type xml, :activity
+        verb xml, :follow
+
+        target(xml) do
+          include_author xml, follow.target_account
+        end
+      end
+    end.to_xml
   end
 end
diff --git a/app/services/reject_follow_service.rb b/app/services/reject_follow_service.rb
index a17d6a7bea0..ac92ad5f71f 100644
--- a/app/services/reject_follow_service.rb
+++ b/app/services/reject_follow_service.rb
@@ -1,12 +1,37 @@
 # frozen_string_literal: true
 
 class RejectFollowService < BaseService
-  include StreamEntryRenderer
-
   def call(source_account, target_account)
     follow_request = FollowRequest.find_by!(account: source_account, target_account: target_account)
     follow_request.reject!
-    NotificationWorker.perform_async(stream_entry_to_xml(follow_request.stream_entry), target_account.id, source_account.id) unless source_account.local?
-    follow_request.stream_entry.destroy
+    NotificationWorker.perform_async(build_xml(follow_request), target_account.id, source_account.id) unless source_account.local?
+  end
+
+  private
+
+  def build_xml(follow_request)
+    Nokogiri::XML::Builder.new do |xml|
+      entry(xml, true) do
+        author(xml) do
+          include_author xml, follow_request.target_account
+        end
+
+        object_type xml, :activity
+        verb xml, :reject
+
+        target(xml) do
+          author(xml) do
+            include_author xml, follow_request.account
+          end
+
+          object_type xml, :activity
+          verb xml, :request_friend
+
+          target(xml) do
+            include_author xml, follow_request.target_account
+          end
+        end
+      end
+    end.to_xml
   end
 end
diff --git a/app/services/unblock_service.rb b/app/services/unblock_service.rb
index 84b1050c153..4ff180747cf 100644
--- a/app/services/unblock_service.rb
+++ b/app/services/unblock_service.rb
@@ -1,12 +1,31 @@
 # frozen_string_literal: true
 
 class UnblockService < BaseService
-  include StreamEntryRenderer
-
   def call(account, target_account)
     return unless account.blocking?(target_account)
 
     unblock = account.unblock!(target_account)
-    NotificationWorker.perform_async(stream_entry_to_xml(unblock.stream_entry), account.id, target_account.id) unless target_account.local?
+    NotificationWorker.perform_async(build_xml(unblock), account.id, target_account.id) unless target_account.local?
+  end
+
+  private
+
+  def build_xml(block)
+    Nokogiri::XML::Builder.new do |xml|
+      entry(xml, true) do
+        title xml, "#{block.account.acct} no longer blocks #{block.target_account.acct}"
+
+        author(xml) do
+          include_author xml, block.account
+        end
+
+        object_type xml, :activity
+        verb xml, :unblock
+
+        target(xml) do
+          include_author xml, block.target_account
+        end
+      end
+    end.to_xml
   end
 end
diff --git a/app/services/unfavourite_service.rb b/app/services/unfavourite_service.rb
index 04293ee08b9..b79b8a93896 100644
--- a/app/services/unfavourite_service.rb
+++ b/app/services/unfavourite_service.rb
@@ -1,16 +1,37 @@
 # frozen_string_literal: true
 
 class UnfavouriteService < BaseService
-  include StreamEntryRenderer
-
   def call(account, status)
     favourite = Favourite.find_by!(account: account, status: status)
     favourite.destroy!
 
-    unless status.local?
-      NotificationWorker.perform_async(stream_entry_to_xml(favourite.stream_entry), account.id, status.account_id)
-    end
+    NotificationWorker.perform_async(build_xml(favourite), account.id, status.account_id) unless status.local?
 
     favourite
   end
+
+  private
+
+  def build_xml(favourite)
+    Nokogiri::XML::Builder.new do |xml|
+      entry(xml, true) do
+        title xml, "#{favourite.account.acct} no longer favourites a status by #{favourite.status.account.acct}"
+
+        author(xml) do
+          include_author xml, favourite.account
+        end
+
+        object_type xml, :activity
+        verb xml, :unfavourite
+
+        target(xml) do
+          author(xml) do
+            include_author xml, favourite.status.account
+          end
+
+          include_entry xml, favourite.status.stream_entry
+        end
+      end
+    end.to_xml
+  end
 end
diff --git a/app/services/unfollow_service.rb b/app/services/unfollow_service.rb
index 178da4da313..8982b1c19e8 100644
--- a/app/services/unfollow_service.rb
+++ b/app/services/unfollow_service.rb
@@ -1,14 +1,33 @@
 # frozen_string_literal: true
 
 class UnfollowService < BaseService
-  include StreamEntryRenderer
-
   # Unfollow and notify the remote user
   # @param [Account] source_account Where to unfollow from
   # @param [Account] target_account Which to unfollow
   def call(source_account, target_account)
     follow = source_account.unfollow!(target_account)
-    NotificationWorker.perform_async(stream_entry_to_xml(follow.stream_entry), source_account.id, target_account.id) unless target_account.local?
+    NotificationWorker.perform_async(build_xml(follow), source_account.id, target_account.id) unless target_account.local?
     UnmergeWorker.perform_async(target_account.id, source_account.id)
   end
+
+  private
+
+  def build_xml(follow)
+    Nokogiri::XML::Builder.new do |xml|
+      entry(xml, true) do
+        title xml, "#{follow.account.acct} is no longer following #{follow.target_account.acct}"
+
+        author(xml) do
+          include_author xml, follow.account
+        end
+
+        object_type xml, :activity
+        verb xml, :unfollow
+
+        target(xml) do
+          include_author xml, follow.target_account
+        end
+      end
+    end.to_xml
+  end
 end
diff --git a/app/views/stream_entries/_favourite.html.haml b/app/views/stream_entries/_favourite.html.haml
deleted file mode 100644
index ea487932853..00000000000
--- a/app/views/stream_entries/_favourite.html.haml
+++ /dev/null
@@ -1,5 +0,0 @@
-.entry.entry-favourite
-  .content.emojify
-    %strong= favourite.account.acct
-    = t('stream_entries.favourited')
-    %strong= favourite.status.account.acct
diff --git a/app/views/stream_entries/_follow.html.haml b/app/views/stream_entries/_follow.html.haml
deleted file mode 100644
index da6d062f0f2..00000000000
--- a/app/views/stream_entries/_follow.html.haml
+++ /dev/null
@@ -1,5 +0,0 @@
-.entry.entry-follow
-  .content.emojify
-    %strong= link_to follow.account.acct, account_path(follow.account)
-    = t('stream_entries.is_now_following')
-    %strong= link_to follow.target_account.acct, TagManager.instance.url_for(follow.target_account)
diff --git a/config/routes.rb b/config/routes.rb
index e17d5499506..3da7563fd43 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -4,7 +4,6 @@ require 'sidekiq/web'
 
 Rails.application.routes.draw do
   mount LetterOpenerWeb::Engine, at: 'letter_opener' if Rails.env.development?
-  mount ActionCable.server, at: 'cable'
 
   authenticate :user, lambda { |u| u.admin? } do
     mount Sidekiq::Web, at: 'sidekiq', as: :sidekiq
diff --git a/spec/lib/tag_manager_spec.rb b/spec/lib/tag_manager_spec.rb
index b6058425383..cbb427a8c17 100644
--- a/spec/lib/tag_manager_spec.rb
+++ b/spec/lib/tag_manager_spec.rb
@@ -47,22 +47,6 @@ RSpec.describe TagManager do
         expect(subject).to be_a String
       end
     end
-
-    context 'Follow' do
-      let(:target) { Fabricate(:follow, account: alice, target_account: bob) }
-