Add issues/merge_requests filtering by state for search API

changelogs/unreleased/237947-search-api-issues-filter-by-state.yml

+---
+title: Add issues and merge_requests filtering by state for search API
+merge_request: 41989
+author:
+type: added

doc/api/search.md

@@ -397,6 +397,7 @@ GET /groups/:id/search
 | `id`                | integer/string   | yes        | The ID or [URL-encoded path of the group](README.md#namespaced-path-encoding) owned by the authenticated user                |
 | `scope`       | string   | yes        | The scope to search in                |
 | `search`      | string   | yes        | The search query  |
+| `state`       | string   | no        | Filtering by state, currently only supported for issues and merge requests. It is ignored for other scopes  |
 
 Search the expression within the specified scope. Currently these scopes are supported: projects, issues, merge_requests, milestones, users.
 
@@ -741,6 +742,7 @@ GET /projects/:id/search
 | `scope`       | string   | yes        | The scope to search in                |
 | `search`      | string   | yes        | The search query  |
 | `ref`         | string   | no         | The name of a repository branch or tag to search on. The project's default branch is used by default. This is only applicable for scopes: commits, blobs, and wiki_blobs.  |
+| `state`       | string   | no        | Filtering by state, currently only supported for issues and merge requests. It is ignored for other scopes  |
 
 Search the expression within the specified scope. Currently these scopes are supported: issues, merge_requests, milestones, notes, wiki_blobs, commits, blobs, users.
 

ee/lib/elastic/latest/state_filter.rb

@@ -9,7 +9,7 @@ module Elastic
         state = options[:state]
 
         return query_hash if state.blank? || state == 'all'
-        return query_hash unless %w(all opened closed merged).include?(state)
+        return query_hash unless API::Helpers::SearchHelpers.search_states.include?(state)
 
         filter = { match: { state: state } }
 

lib/api/helpers/search_helpers.rb

@@ -17,6 +17,10 @@ module API
         # This is a separate method so that EE can redefine it.
         %w(issues merge_requests milestones notes wiki_blobs commits blobs users)
       end
+
+      def self.search_states
+        %w(all opened closed merged)
+      end
     end
   end
 end

lib/api/search.rb

@@ -32,6 +32,7 @@ module API
         search_params = {
           scope: params[:scope],
           search: params[:search],
+          state: params[:state],
           snippets: snippets?,
           page: params[:page],
           per_page: params[:per_page]
@@ -79,6 +80,7 @@ module API
           type: String,
           desc: 'The scope of the search',
           values: Helpers::SearchHelpers.global_search_scopes
+        optional :state, type: String, desc: 'Filter results by state', values: Helpers::SearchHelpers.search_states
         use :pagination
       end
       get do
@@ -100,6 +102,7 @@ module API
           type: String,
           desc: 'The scope of the search',
           values: Helpers::SearchHelpers.group_search_scopes
+        optional :state, type: String, desc: 'Filter results by state', values: Helpers::SearchHelpers.search_states
         use :pagination
       end
       get ':id/(-/)search' do
@@ -122,6 +125,7 @@ module API
           desc: 'The scope of the search',
           values: Helpers::SearchHelpers.project_search_scopes
         optional :ref, type: String, desc: 'The name of a repository branch or tag. If not given, the default branch is used'
+        optional :state, type: String, desc: 'Filter results by state', values: Helpers::SearchHelpers.search_states
         use :pagination
       end
       get ':id/(-/)search' do

spec/requests/api/search_spec.rb

@@ -47,6 +47,17 @@ RSpec.describe API::Search do
     end
   end
 
+  shared_examples 'filter by state' do |scope:, search:|
+    it 'respects scope filtering' do
+      get api(endpoint, user), params: { scope: scope, search: search, state: state }
+
+      documents = Gitlab::Json.parse(response.body)
+
+      expect(documents.count).to eq(1)
+      expect(documents.first['state']).to eq(state)
+    end
+  end
+
   describe 'GET /search' do
     let(:endpoint) { '/search' }
 
@@ -88,6 +99,7 @@ RSpec.describe API::Search do
       end
 
       context 'for issues scope' do
+        context 'without filtering by state' do
           before do
             create(:issue, project: project, title: 'awesome issue')
 
@@ -107,7 +119,28 @@ RSpec.describe API::Search do
           end
         end
 
+        context 'filter by state' do
+          before do
+            create(:issue, project: project, title: 'awesome opened issue')
+            create(:issue, :closed, project: project, title: 'awesome closed issue')
+          end
+
+          context 'state: opened' do
+            let(:state) { 'opened' }
+
+            include_examples 'filter by state', scope: :issues, search: 'awesome'
+          end
+
+          context 'state: closed' do
+            let(:state) { 'closed' }
+
+            include_examples 'filter by state', scope: :issues, search: 'awesome'
+          end
+        end
+      end
+
       context 'for merge_requests scope' do
+        context 'without filtering by state' do
           before do
             create(:merge_request, source_project: repo_project, title: 'awesome mr')
 
@@ -127,6 +160,26 @@ RSpec.describe API::Search do
           end
         end
 
+        context 'filter by state' do
+          before do
+            create(:merge_request, source_project: project, title: 'awesome opened mr')
+            create(:merge_request, :closed, project: project, title: 'awesome closed mr')
+          end
+
+          context 'state: opened' do
+            let(:state) { 'opened' }
+
+            include_examples 'filter by state', scope: :merge_requests, search: 'awesome'
+          end
+
+          context 'state: closed' do
+            let(:state) { 'closed' }
+
+            include_examples 'filter by state', scope: :merge_requests, search: 'awesome'
+          end
+        end
+      end
+
       context 'for milestones scope' do
         before do
           create(:milestone, project: project, title: 'awesome milestone')