Rename "Slash commands" to "Quick actions"

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/27070

Deprecate "chat commands" in favor of "slash commands"

We looked for things like:

 - `slash commmand`
 - `slash_command`
 - `slash-command`
 - `SlashCommand`

1 files changed, 36 insertions, 0 deletions

diff --git a/app/services/notes/quick_actions_service.rb b/app/services/notes/quick_actions_service.rb
new file mode 100644
index 00000000000..8f81b54164a
--- /dev/null
+++ b/app/services/notes/quick_actions_service.rb
@@ -0,0 +1,36 @@
+module Notes
+  class QuickActionsService < BaseService
+    UPDATE_SERVICES = {
+      'Issue' => Issues::UpdateService,
+      'MergeRequest' => MergeRequests::UpdateService
+    }.freeze
+
+    def self.noteable_update_service(note)
+      UPDATE_SERVICES[note.noteable_type]
+    end
+
+    def self.supported?(note, current_user)
+      noteable_update_service(note) &&
+        current_user &&
+        current_user.can?(:"update_#{note.to_ability_name}", note.noteable)
+    end
+
+    def supported?(note)
+      self.class.supported?(note, current_user)
+    end
+
+    def extract_commands(note, options = {})
+      return [note.note, {}] unless supported?(note)
+
+      QuickActions::InterpretService.new(project, current_user, options).
+        execute(note.note, note.noteable)
+    end
+
+    def execute(command_params, note)
+      return if command_params.empty?
+      return unless supported?(note)
+
+      self.class.noteable_update_service(note).new(project, current_user, command_params).execute(note.noteable)
+    end
+  end
+end