Revert "Merge branch '52123-issuable-actions-notesfinder-pderichs' into 'master'"

This reverts merge request !29733

9 files changed, 24 insertions, 260 deletions

diff --git a/app/controllers/concerns/issuable_actions.rb b/app/controllers/concerns/issuable_actions.rb
index 94d1e8248fc..6fa2f75be33 100644
--- a/app/controllers/concerns/issuable_actions.rb
+++ b/app/controllers/concerns/issuable_actions.rb
@@ -98,12 +98,13 @@ module IssuableActions
     render json: { notice: "#{quantity} #{resource_name.pluralize(quantity)} updated" }
   end
 
-  # rubocop:disable CodeReuse/ActiveRecord
+  # rubocop: disable CodeReuse/ActiveRecord
   def discussions
-    notes = NotesFinder.new(project, current_user, finder_params_for_issuable).execute
-                .inc_relations_for_view
-                .includes(:noteable)
-                .fresh
+    notes = issuable.discussion_notes
+      .inc_relations_for_view
+      .with_notes_filter(notes_filter)
+      .includes(:noteable)
+      .fresh
 
     if notes_filter != UserPreference::NOTES_FILTERS[:only_comments]
       notes = ResourceEvents::MergeIntoNotesService.new(issuable, current_user).execute(notes)
@@ -116,7 +117,7 @@ module IssuableActions
 
     render json: discussion_serializer.represent(discussions, context: self)
   end
-  # rubocop:enable CodeReuse/ActiveRecord
+  # rubocop: enable CodeReuse/ActiveRecord
 
   private
 
@@ -221,13 +222,4 @@ module IssuableActions
   def parent
     @project || @group # rubocop:disable Gitlab/ModuleWithInstanceVariables
   end
-
-  # rubocop:disable Gitlab/ModuleWithInstanceVariables
-  def finder_params_for_issuable
-    {
-        target: @issuable,
-        notes_filter: notes_filter
-    }
-  end
-  # rubocop:enable Gitlab/ModuleWithInstanceVariables
 end
diff --git a/app/finders/notes_finder.rb b/app/finders/notes_finder.rb
index c25600221d7..8f610d7dddb 100644
--- a/app/finders/notes_finder.rb
+++ b/app/finders/notes_finder.rb
@@ -3,8 +3,6 @@
 class NotesFinder
   FETCH_OVERLAP = 5.seconds
 
-  attr_reader :target_type
-
   # Used to filter Notes
   # When used with target_type and target_id this returns notes specifically for the controller
   #
@@ -12,7 +10,6 @@ class NotesFinder
   #   current_user - which user check authorizations with
   #   project - which project to look for notes on
   #   params:
-  #     target: noteable
   #     target_type: string
   #     target_id: integer
   #     last_fetched_at: time
@@ -21,8 +18,7 @@ class NotesFinder
   def initialize(project, current_user, params = {})
     @project = project
     @current_user = current_user
-    @params = params.dup
-    @target_type = @params[:target_type]
+    @params = params
   end
 
   def execute
@@ -36,27 +32,7 @@ class NotesFinder
   def target
     return @target if defined?(@target)
 
-    if target_given?
-      use_explicit_target
-    else
-      find_target_by_type_and_ids
-    end
-  end
-
-  private
-
-  def target_given?
-    @params.key?(:target)
-  end
-
-  def use_explicit_target
-    @target = @params[:target]
-    @target_type = @target.class.name.underscore
-
-    @target
-  end
-
-  def find_target_by_type_and_ids
+    target_type = @params[:target_type]
     target_id   = @params[:target_id]
     target_iid  = @params[:target_iid]
 
@@ -69,11 +45,13 @@ class NotesFinder
           @project.commit(target_id)
         end
       else
-        noteable_for_type_by_id(target_type, target_id, target_iid)
+        noteables_for_type_by_id(target_type, target_id, target_iid)
       end
   end
 
-  def noteable_for_type_by_id(type, id, iid)
+  private
+
+  def noteables_for_type_by_id(type, id, iid)
     query = if id
               { id: id }
             else
@@ -99,6 +77,10 @@ class NotesFinder
     search(notes)
   end
 
+  def target_type
+    @params[:target_type]
+  end
+
   # rubocop: disable CodeReuse/ActiveRecord
   def notes_of_any_type
     types = %w(commit issue merge_request snippet)
diff --git a/spec/controllers/concerns/issuable_actions_spec.rb b/spec/controllers/concerns/issuable_actions_spec.rb
deleted file mode 100644
index 3281fd4a2ef..00000000000
--- a/spec/controllers/concerns/issuable_actions_spec.rb
+++ /dev/null
@@ -1,69 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-describe IssuableActions do
-  let(:project) { double('project') }
-  let(:user) { double('user') }
-  let(:issuable) { double('issuable') }
-  let(:finder_params_for_issuable) { {} }
-  let(:notes_result) { double('notes_result') }
-  let(:discussion_serializer) { double('discussion_serializer') }
-
-  let(:controller) do
-    klass = Class.new do
-      attr_reader :current_user, :project, :issuable
-
-      def self.before_action(action, params = nil)
-      end
-
-      include IssuableActions
-
-      def initialize(issuable, project, user, finder_params)
-        @issuable = issuable
-        @project = project
-        @current_user = user
-        @finder_params = finder_params
-      end
-
-      def finder_params_for_issuable
-        @finder_params
-      end
-
-      def params
-        {
-          notes_filter: 1
-        }
-      end
-
-      def prepare_notes_for_rendering(notes)
-        []
-      end
-
-      def render(options)
-      end
-    end
-
-    klass.new(issuable, project, user, finder_params_for_issuable)
-  end
-
-  describe '#discussions' do
-    before do
-      allow(user).to receive(:set_notes_filter)
-      allow(user).to receive(:user_preference)
-      allow(discussion_serializer).to receive(:represent)
-    end
-
-    it 'instantiates and calls NotesFinder as expected' do
-      expect(Discussion).to receive(:build_collection).and_return([])
-      expect(DiscussionSerializer).to receive(:new).and_return(discussion_serializer)
-      expect(NotesFinder).to receive(:new).with(project, user, finder_params_for_issuable).and_call_original
-
-      expect_any_instance_of(NotesFinder).to receive(:execute).and_return(notes_result)
-
-      expect(notes_result).to receive_messages(inc_relations_for_view: notes_result, includes: notes_result, fresh: notes_result)
-
-      controller.discussions
-    end
-  end
-end
diff --git a/spec/controllers/projects/issues_controller_spec.rb b/spec/controllers/projects/issues_controller_spec.rb
index 0f885d776e1..32d14dce936 100644
--- a/spec/controllers/projects/issues_controller_spec.rb
+++ b/spec/controllers/projects/issues_controller_spec.rb
@@ -1260,28 +1260,6 @@ describe Projects::IssuesController do
         sign_in(user)
       end
 
-      context do
-        it_behaves_like 'discussions provider' do
-          let!(:author) { create(:user) }
-          let!(:project) { create(:project) }
-
-          let!(:issue) { create(:issue, project: project, author: user) }
-
-          let!(:note_on_issue1) { create(:discussion_note_on_issue, noteable: issue, project: issue.project, author: create(:user)) }
-          let!(:note_on_issue2) { create(:discussion_note_on_issue, noteable: issue, project: issue.project, author: create(:user)) }
-
-          let(:requested_iid) { issue.iid }
-          let(:expected_discussion_count) { 3 }
-          let(:expected_discussion_ids) do
-            [
-              issue.notes.first.discussion_id,
-              note_on_issue1.discussion_id,
-              note_on_issue2.discussion_id
-            ]
-          end
-        end
-      end
-
       it 'returns discussion json' do
         get :discussions, params: { namespace_id: project.namespace, project_id: project, id: issue.iid }
 
diff --git a/spec/controllers/projects/merge_requests_controller_spec.rb b/spec/controllers/projects/merge_requests_controller_spec.rb
index 9aa5f1ade8d..fa71d9b61b1 100644
--- a/spec/controllers/projects/merge_requests_controller_spec.rb
+++ b/spec/controllers/projects/merge_requests_controller_spec.rb
@@ -1120,22 +1120,6 @@ describe Projects::MergeRequestsController do
         end
       end
     end
-
-    context do
-      it_behaves_like 'discussions provider' do
-        let!(:author) { create(:user) }
-        let!(:project) { create(:project) }
-
-        let!(:merge_request) { create(:merge_request, source_project: project) }
-
-        let!(:mr_note1) { create(:discussion_note_on_merge_request, noteable: merge_request, project: project) }
-        let!(:mr_note2) { create(:discussion_note_on_merge_request, noteable: merge_request, project: project) }
-
-        let(:requested_iid) { merge_request.iid }
-        let(:expected_discussion_count) { 2 }
-        let(:expected_discussion_ids) { [mr_note1.discussion_id, mr_note2.discussion_id] }
-      end
-    end
   end
 
   describe 'GET edit' do
diff --git a/spec/finders/notes_finder_spec.rb b/spec/finders/notes_finder_spec.rb
index 677fde0d8ce..87bde4ca2f6 100644
--- a/spec/finders/notes_finder_spec.rb
+++ b/spec/finders/notes_finder_spec.rb
@@ -118,11 +118,16 @@ describe NotesFinder do
 
     context 'for target' do
       let(:project) { create(:project, :repository) }
-      let!(:note1) { create :note_on_commit, project: project }
-      let!(:note2) { create :note_on_commit, project: project }
+      let(:note1) { create :note_on_commit, project: project }
+      let(:note2) { create :note_on_commit, project: project }
       let(:commit) { note1.noteable }
       let(:params) { { target_id: commit.id, target_type: 'commit', last_fetched_at: 1.hour.ago.to_i } }
 
+      before do
+        note1
+        note2
+      end
+
       it 'finds all notes' do
         notes = described_class.new(project, user, params).execute
         expect(notes.size).to eq(2)
@@ -189,28 +194,6 @@ describe NotesFinder do
         end
       end
     end
-
-    context 'for explicit target' do
-      let(:project) { create(:project, :repository) }
-      let!(:note1) { create :note_on_commit, project: project, created_at: 1.day.ago, updated_at: 2.hours.ago }
-      let!(:note2) { create :note_on_commit, project: project }
-      let(:commit) { note1.noteable }
-      let(:params) { { target: commit } }
-
-      it 'returns the expected notes' do
-        expect(described_class.new(project, user, params).execute).to eq([note1, note2])
-      end
-
-      it 'returns the expected notes when last_fetched_at is given' do
-        params = { target: commit, last_fetched_at: 1.hour.ago.to_i }
-        expect(described_class.new(project, user, params).execute).to eq([note2])
-      end
-
-      it 'fails when nil is provided' do
-        params = { target: nil }
-        expect { described_class.new(project, user, params).execute }.to raise_error(RuntimeError)
-      end
-    end
   end
 
   describe '.search' do
diff --git a/spec/fixtures/api/schemas/entities/discussion.json b/spec/fixtures/api/schemas/entities/discussion.json
deleted file mode 100644
index bcc1db79e83..00000000000
--- a/spec/fixtures/api/schemas/entities/discussion.json
+++ /dev/null
@@ -1,67 +0,0 @@
-{
-  "type": "object",
-  "required" : [
-    "id",
-    "notes",
-    "individual_note"
-  ],
-  "properties" : {
-    "id": { "type": "string" },
-    "individual_note": { "type": "boolean" },
-    "notes": {
-      "type": "array",
-      "items": {
-        "type": "object",
-        "properties" : {
-          "id": { "type": "string" },
-          "type": { "type": ["string", "null"] },
-          "body": { "type": "string" },
-          "attachment": { "type": ["string", "null"]},
-          "award_emoji": { "type": "array" },
-          "author": {
-            "type": "object",
-            "properties": {
-              "name": { "type": "string" },
-              "username": { "type": "string" },
-              "id": { "type": "integer" },
-              "state": { "type": "string" },
-              "avatar_url": { "type": "uri" },
-              "web_url": { "type": "uri" },
-              "status_tooltip_html": { "type": ["string", "null"] },
-              "path": { "type": "string" }
-            },
-            "additionalProperties": false
-          },
-          "created_at": { "type": "date" },
-          "updated_at": { "type": "date" },
-          "system": { "type": "boolean" },
-          "noteable_id": { "type": "integer" },
-          "noteable_iid": { "type": "integer" },
-          "noteable_type": { "type": "string" },
-          "resolved": { "type": "boolean" },
-          "resolvable": { "type": "boolean" },
-          "resolved_by": { "type": ["string", "null"] },
-          "note": { "type": "string" },
-          "note_html": { "type": "string"  },
-          "current_user": { "type": "object" },
-          "suggestions": { "type": "array" },
-          "discussion_id": { "type": "string" },
-          "emoji_awardable": { "type": "boolean" },
-          "report_abuse_path": { "type": "string" },
-          "noteable_note_url": { "type": "string" },
-          "resolve_path": { "type": "string" },
-          "resolve_with_issue_path": { "type": "string" },
-          "cached_markdown_version": { "type": "integer" },
-          "human_access": { "type": ["string", "null"] },
-          "toggle_award_path": { "type": "string" },
-          "path": { "type": "string" }
-        },
-        "required": [
-          "id", "attachment", "author", "created_at", "updated_at",
-          "system", "noteable_id", "noteable_type"
-        ],
-        "additionalProperties": false
-      }
-    }
-  }
-}
diff --git a/spec/fixtures/api/schemas/entities/discussions.json b/spec/fixtures/api/schemas/entities/discussions.json
deleted file mode 100644
index 5a837429776..00000000000
--- a/spec/fixtures/api/schemas/entities/discussions.json
+++ /dev/null
@@ -1,4 +0,0 @@
-{
-  "type": "array",
-  "items": { "$ref": "discussion.json" }
-}
diff --git a/spec/support/shared_examples/discussions_provider_shared_examples.rb b/spec/support/shared_examples/discussions_provider_shared_examples.rb
deleted file mode 100644
index 77cf1ac3f51..00000000000
--- a/spec/support/shared_examples/discussions_provider_shared_examples.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-# frozen_string_literal: true
-
-require 'spec_helper'
-
-shared_examples 'discussions provider' do
-  it 'returns the expected discussions' do
-    get :discussions, params: { namespace_id: project.namespace, project_id: project, id: requested_iid }
-
-    expect(response).to have_gitlab_http_status(200)
-    expect(response).to match_response_schema('entities/discussions')
-
-    expect(json_response.size).to eq(expected_discussion_count)
-    expect(json_response.pluck('id')).to eq(expected_discussion_ids)
-  end
-end