sorting for tags api

app/models/repository.rb

@@ -686,7 +686,9 @@ class Repository
   def tags_sorted_by(value)
     case value
-    when 'name'
+    when 'name_asc'
+      VersionSorter.sort(tags) { |tag| tag.name }
+    when 'name_desc'
       VersionSorter.rsort(tags) { |tag| tag.name }
     when 'updated_desc'
       tags_sorted_by_committed_date.reverse

changelogs/unreleased/40509_sorting_tags_api.yml

+---
+title: add support for sorting in tags api
+merge_request: 15772
+author: haseebeqx
+type: added

doc/api/tags.md

@@ -12,7 +12,11 @@ GET /projects/:id/repository/tags
 Parameters:
-- `id` (required) - The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user
+| Attribute | Type | Required | Description |
+| --------- | ---- | -------- | ----------- |
+| `id` | integer/string| yes | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user|
+| `order_by` | string | no | Return tags ordered by `name` or `updated` fields. Default is `updated` |
+| `sort` | string | no | Return tags sorted in `asc` or `desc` order. Default is `desc` |
 ```json
 [

lib/api/tags.rb

@@ -14,10 +14,15 @@ module API
         success Entities::Tag
       end
       params do
+        optional :sort, type: String, values: %w[asc desc], default: 'desc',
+                        desc: 'Return tags sorted in updated by `asc` or `desc` order.'
+        optional :order_by, type: String, values: %w[name updated], default: 'updated',
+                            desc: 'Return tags ordered by `name` or `updated` fields.'
         use :pagination
       end
       get ':id/repository/tags' do
-        tags = ::Kaminari.paginate_array(user_project.repository.tags.sort_by(&:name).reverse)
+        tags = ::Kaminari.paginate_array(::TagsFinder.new(user_project.repository, sort: "#{params[:order_by]}_#{params[:sort]}").execute)
+
         present paginate(tags), with: Entities::Tag, project: user_project
       end

spec/models/repository_spec.rb

@@ -59,12 +59,18 @@ describe Repository do
   end
   describe 'tags_sorted_by' do
-    context 'name' do
-      subject { repository.tags_sorted_by('name').map(&:name) }
+    context 'name_desc' do
+      subject { repository.tags_sorted_by('name_desc').map(&:name) }
       it { is_expected.to eq(['v1.1.0', 'v1.0.0']) }
     end
+    context 'name_asc' do
+      subject { repository.tags_sorted_by('name_asc').map(&:name) }
+
+      it { is_expected.to eq(['v1.0.0', 'v1.1.0']) }
+    end
+
     context 'updated' do
       let(:tag_a) { repository.find_tag('v1.0.0') }
       let(:tag_b) { repository.find_tag('v1.1.0') }

spec/requests/api/tags_spec.rb

@@ -16,6 +16,44 @@ describe API::Tags do
   describe 'GET /projects/:id/repository/tags' do
     let(:route) { "/projects/#{project_id}/repository/tags" }
+    context 'sorting' do
+      let(:current_user) { user }
+
+      it 'sorts by descending order by default' do
+        get api(route, current_user)
+
+        desc_order_tags = project.repository.tags.sort_by { |tag| tag.dereferenced_target.committed_date }
+        desc_order_tags.reverse!.map! { |tag| tag.dereferenced_target.id }
+
+        expect(json_response.map { |tag| tag['commit']['id'] }).to eq(desc_order_tags)
+      end
+
+      it 'sorts by ascending order if specified' do
+        get api("#{route}?sort=asc", current_user)
+
+        asc_order_tags = project.repository.tags.sort_by { |tag| tag.dereferenced_target.committed_date }
+        asc_order_tags.map! { |tag| tag.dereferenced_target.id }
+
+        expect(json_response.map { |tag| tag['commit']['id'] }).to eq(asc_order_tags)
+      end
+
+      it 'sorts by name in descending order when requested' do
+        get api("#{route}?order_by=name", current_user)
+
+        ordered_by_name = project.repository.tags.map { |tag| tag.name }.sort.reverse
+
+        expect(json_response.map { |tag| tag['name'] }).to eq(ordered_by_name)
+      end
+
+      it 'sorts by name in ascending order when requested' do
+        get api("#{route}?order_by=name&sort=asc", current_user)
+
+        ordered_by_name = project.repository.tags.map { |tag| tag.name }.sort
+
+        expect(json_response.map { |tag| tag['name'] }).to eq(ordered_by_name)
+      end
+    end
+
     shared_examples_for 'repository tags' do
       it 'returns the repository tags' do
         get api(route, current_user)