Remove the `comment_personal_snippet` permissionremove-comment-personal-snippet-permission

This is now entirely handled by `create_note`:

1. Project snippets prevent `create_note`.
2. Uploads already only support routing for personal snippets.

This simplifies some policies and access checks, too!

3 files changed, 10 insertions, 18 deletions

diff --git a/app/controllers/uploads_controller.rb b/app/controllers/uploads_controller.rb
index 568c6e2a852..060b09f015c 100644
--- a/app/controllers/uploads_controller.rb
+++ b/app/controllers/uploads_controller.rb
@@ -56,8 +56,9 @@ class UploadsController < ApplicationController
   def authorize_create_access!
     return unless model
 
-    # for now we support only personal snippets comments
-    authorized = can?(current_user, :comment_personal_snippet, model)
+    # for now we support only personal snippets comments. Only personal_snippet
+    # is allowed as a model to #create through routing.
+    authorized = can?(current_user, :create_note, model)
 
     render_unauthorized unless authorized
   end
diff --git a/app/helpers/notes_helper.rb b/app/helpers/notes_helper.rb
index a50137bea3d..2e31a5e2ed4 100644
--- a/app/helpers/notes_helper.rb
+++ b/app/helpers/notes_helper.rb
@@ -128,15 +128,9 @@ module NotesHelper
   end
 
   def can_create_note?
-    issuable = @issue || @merge_request
+    noteable = @issue || @merge_request || @snippet || @project
 
-    if @snippet.is_a?(PersonalSnippet)
-      can?(current_user, :comment_personal_snippet, @snippet)
-    elsif issuable
-      can?(current_user, :create_note, issuable)
-    else
-      can?(current_user, :create_note, @project)
-    end
+    can?(current_user, :create_note, noteable)
   end
 
   def initial_notes_data(autocomplete)
diff --git a/app/policies/personal_snippet_policy.rb b/app/policies/personal_snippet_policy.rb
index 2b5cca76c20..40dd49b4afd 100644
--- a/app/policies/personal_snippet_policy.rb
+++ b/app/policies/personal_snippet_policy.rb
@@ -7,7 +7,7 @@ class PersonalSnippetPolicy < BasePolicy
 
   rule { public_snippet }.policy do
     enable :read_personal_snippet
-    enable :comment_personal_snippet
+    enable :create_note
   end
 
   rule { is_author }.policy do
@@ -15,7 +15,7 @@ class PersonalSnippetPolicy < BasePolicy
     enable :update_personal_snippet
     enable :destroy_personal_snippet
     enable :admin_personal_snippet
-    enable :comment_personal_snippet
+    enable :create_note
   end
 
   rule { ~anonymous }.enable :create_personal_snippet
@@ -23,15 +23,12 @@ class PersonalSnippetPolicy < BasePolicy
 
   rule { internal_snippet & ~external_user }.policy do
     enable :read_personal_snippet
-    enable :comment_personal_snippet
+    enable :create_note
   end
 
-  rule { anonymous }.prevent :comment_personal_snippet
+  rule { anonymous }.prevent :create_note
 
-  rule { can?(:comment_personal_snippet) }.policy do
-    enable :create_note
-    enable :award_emoji
-  end
+  rule { can?(:create_note) }.enable :award_emoji
 
   rule { full_private_access }.enable :read_personal_snippet
 end