# frozen_string_literal: true

require 'spec_helper'

RSpec.describe API::GroupLabels do
  let_it_be(:valid_group_label_title_1) { 'Label foo & bar:subgroup::v.1' }
  let_it_be(:valid_group_label_title_1_esc) { ERB::Util.url_encode(valid_group_label_title_1) }
  let_it_be(:valid_group_label_title_2) { 'Bar & foo:subgroup::v.2' }
  let_it_be(:valid_subgroup_label_title_1) { 'Support label foobar:sub::v.1' }
  let_it_be(:valid_new_label_title) { 'New & foo:feature::v.3' }

  let(:user) { create(:user) }
  let(:group) { create(:group) }
  let(:subgroup) { create(:group, parent: group) }
  let!(:group_member) { create(:group_member, group: group, user: user) }
  let!(:group_label1) { create(:group_label, title: valid_group_label_title_1, group: group) }
  let!(:group_label2) { create(:group_label, title: valid_group_label_title_2, group: group) }
  let!(:subgroup_label) { create(:group_label, title: valid_subgroup_label_title_1, group: subgroup) }

  describe 'GET :id/labels' do
    context 'get current group labels' do
      let(:request) { get api("/groups/#{group.id}/labels", user) }
      let(:expected_labels) { [group_label1.name, group_label2.name] }

      it_behaves_like 'fetches labels'

      context 'when search param is provided' do
        let(:request) { get api("/groups/#{group.id}/labels?search=lab", user) }
        let(:expected_labels) { [group_label1.name] }

        it_behaves_like 'fetches labels'

        context 'and is subscribed' do
          before do
            group_label1.subscribe(user)
          end

          it 'returns true' do
            get api("/groups/#{group.id}/labels?search=#{group_label1.name}", user)

            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response[0]['subscribed']).to be true
          end
        end

        context 'and is unsubscribed' do
          before do
            group_label1.unsubscribe(user)
          end

          it 'returns false' do
            get api("/groups/#{group.id}/labels?search=#{group_label1.name}", user)

            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response[0]['subscribed']).to be false
          end
        end
      end

      context 'when the with_counts parameter is set' do
        it 'includes counts in the response' do
          get api("/groups/#{group.id}/labels", user), params: { with_counts: true }

          expect(response).to have_gitlab_http_status(:ok)
          expect(response).to include_pagination_headers
          expect(json_response).to be_an Array
          expect(json_response).to all(match_schema('public_api/v4/labels/label_with_counts'))
          expect(json_response.size).to eq(2)
          expect(json_response.map { |r| r['open_issues_count'] }).to contain_exactly(0, 0)
        end
      end

      context 'when include_descendant_groups param is provided' do
        let!(:project) { create(:project, group: group) }
        let!(:project_label1) { create(:label, title: 'project-label1', project: project, priority: 3) }
        let!(:project_label2) { create(:label, title: 'project-bug', project: project) }

        let(:request) { get api("/groups/#{group.id}/labels", user), params: { include_descendant_groups: true } }
        let(:expected_labels) { [group_label1.name, group_label2.name, subgroup_label.name] }

        it_behaves_like 'fetches labels'

        context 'when search param is provided' do
          let(:request) { get api("/groups/#{group.id}/labels", user), params: { search: 'lab', include_descendant_groups: true } }
          let(:expected_labels) { [group_label1.name, subgroup_label.name] }

          it_behaves_like 'fetches labels'
        end

        context 'when only_group_labels param is false' do
          let(:request) { get api("/groups/#{group.id}/labels", user), params: { include_descendant_groups: true, only_group_labels: false } }
          let(:expected_labels) { [group_label1.name, group_label2.name, subgroup_label.name, project_label1.name, project_label2.name] }

          it_behaves_like 'fetches labels'

          context 'when search param is provided' do
            let(:request) { get api("/groups/#{group.id}/labels", user), params: { search: 'lab', include_descendant_groups: true, only_group_labels: false } }
            let(:expected_labels) { [group_label1.name, subgroup_label.name, project_label1.name] }

            it_behaves_like 'fetches labels'
          end
        end
      end
    end

    describe 'with subgroup labels' do
      context 'when the include_ancestor_groups parameter is not set' do
        let(:request) { get api("/groups/#{subgroup.id}/labels", user) }
        let(:expected_labels) { [group_label1.name, group_label2.name, subgroup_label.name] }

        it_behaves_like 'fetches labels'

        context 'when search param is provided' do
          let(:request) { get api("/groups/#{subgroup.id}/labels?search=lab", user) }
          let(:expected_labels) { [group_label1.name, subgroup_label.name] }

          it_behaves_like 'fetches labels'
        end
      end

      context 'when the include_ancestor_groups parameter is set to false' do
        let(:request) { get api("/groups/#{subgroup.id}/labels", user), params: { include_ancestor_groups: false } }
        let(:expected_labels) { [subgroup_label.name] }

        it_behaves_like 'fetches labels'

        context 'when search param is provided' do
          let(:request) { get api("/groups/#{subgroup.id}/labels?search=lab", user), params: { include_ancestor_groups: false } }
          let(:expected_labels) { [subgroup_label.name] }

          it_behaves_like 'fetches labels'
        end
      end
    end
  end

  describe 'GET :id/labels/:label_id' do
    it 'returns a single label for the group' do
      get api("/groups/#{group.id}/labels/#{valid_group_label_title_1_esc}", user)

      expect(response).to have_gitlab_http_status(:ok)
      expect(json_response['name']).to eq(group_label1.name)
      expect(json_response['color']).to eq(group_label1.color)
      expect(json_response['description']).to eq(group_label1.description)
    end
  end

  describe 'POST /groups/:id/labels' do
    it 'returns created label when all params are given' do
      post api("/groups/#{group.id}/labels", user),
           params: {
             name: valid_new_label_title,
             color: '#FFAABB',
             description: 'test'
           }

      expect(response).to have_gitlab_http_status(:created)
      expect(json_response['name']).to eq(valid_new_label_title)
      expect(json_response['color']).to eq('#FFAABB')
      expect(json_response['description']).to eq('test')
    end

    it 'returns created label when only required params are given' do
      post api("/groups/#{group.id}/labels", user),
           params: {
             name: valid_new_label_title,
             color: '#FFAABB'
           }

      expect(response).to have_gitlab_http_status(:created)
      expect(json_response['name']).to eq(valid_new_label_title)
      expect(json_response['color']).to eq('#FFAABB')
      expect(json_response['description']).to be_nil
    end

    it 'returns a 400 bad request if name not given' do
      post api("/groups/#{group.id}/labels", user), params: { color: '#FFAABB' }

      expect(response).to have_gitlab_http_status(:bad_request)
    end

    it 'returns a 400 bad request if color is not given' do
      post api("/groups/#{group.id}/labels", user), params: { name: 'Foobar' }

      expect(response).to have_gitlab_http_status(:bad_request)
    end

    it 'returns 409 if label already exists' do
      post api("/groups/#{group.id}/labels", user),
           params: {
             name: group_label1.name,
             color: '#FFAABB'
           }

      expect(response).to have_gitlab_http_status(:conflict)
      expect(json_response['message']).to eq('Label already exists')
    end
  end

  describe 'DELETE /groups/:id/labels (deprecated)' do
    it 'returns 204 for existing label' do
      delete api("/groups/#{group.id}/labels", user), params: { name: group_label1.name }

      expect(response).to have_gitlab_http_status(:no_content)
    end

    it 'returns 404 for non existing label' do
      delete api("/groups/#{group.id}/labels", user), params: { name: 'not_exists' }

      expect(response).to have_gitlab_http_status(:not_found)
      expect(json_response['message']).to eq('404 Label Not Found')
    end

    it 'returns 400 for wrong parameters' do
      delete api("/groups/#{group.id}/labels", user)

      expect(response).to have_gitlab_http_status(:bad_request)
    end

    it "does not delete parent's group labels" do
      subgroup = create(:group, parent: group)
      subgroup_label = create(:group_label, title: 'feature', group: subgroup)

      delete api("/groups/#{subgroup.id}/labels", user), params: { name: subgroup_label.name }

      expect(response).to have_gitlab_http_status(:no_content)
      expect(subgroup.labels.size).to eq(0)
      expect(group.labels).to include(group_label1)
    end

    it_behaves_like '412 response' do
      let(:request) { api("/groups/#{group.id}/labels", user) }
      let(:params) { { name: group_label1.name } }
    end
  end

  describe 'DELETE /groups/:id/labels/:label_id' do
    it 'returns 204 for existing label' do
      delete api("/groups/#{group.id}/labels/#{valid_group_label_title_1_esc}", user)

      expect(response).to have_gitlab_http_status(:no_content)
    end

    it 'returns 404 for non existing label' do
      delete api("/groups/#{group.id}/labels/not_exists", user)

      expect(response).to have_gitlab_http_status(:not_found)
      expect(json_response['message']).to eq('404 Label Not Found')
    end

    it "does not delete parent's group labels" do
      subgroup = create(:group, parent: group)
      subgroup_label = create(:group_label, title: 'feature', group: subgroup)

      delete api("/groups/#{subgroup.id}/labels/#{subgroup_label.name}", user)

      expect(response).to have_gitlab_http_status(:no_content)
      expect(subgroup.labels.size).to eq(0)
      expect(group.labels).to include(group_label1)
    end

    it_behaves_like '412 response' do
      let(:request) { api("/groups/#{group.id}/labels/#{valid_group_label_title_1_esc}", user) }
    end
  end

  describe 'PUT /groups/:id/labels (deprecated)' do
    it 'returns 200 if name and colors and description are changed' do
      put api("/groups/#{group.id}/labels", user),
          params: {
            name: group_label1.name,
            new_name: valid_new_label_title,
            color: '#FFFFFF',
            description: 'test'
          }

      expect(response).to have_gitlab_http_status(:ok)
      expect(json_response['name']).to eq(valid_new_label_title)
      expect(json_response['color']).to eq('#FFFFFF')
      expect(json_response['description']).to eq('test')
    end

    it "does not update parent's group label" do
      subgroup = create(:group, parent: group)
      subgroup_label = create(:group_label, title: 'feature', group: subgroup)

      put api("/groups/#{subgroup.id}/labels", user),
          params: {
            name: subgroup_label.name,
            new_name: valid_new_label_title
          }

      expect(response).to have_gitlab_http_status(:ok)
      expect(subgroup.labels[0].name).to eq(valid_new_label_title)
      expect(group_label1.name).to eq(group_label1.title)
    end

    it 'returns 404 if label does not exist' do
      put api("/groups/#{group.id}/labels", user),
          params: {
            name: 'not_exists',
            new_name: valid_new_label_title
          }

      expect(response).to have_gitlab_http_status(:not_found)
    end

    it 'returns 400 if no label name given' do
      put api("/groups/#{group.id}/labels", user), params: { new_name: group_label1.name }

      expect(response).to have_gitlab_http_status(:bad_request)
      expect(json_response['error']).to eq('label_id, name are missing, exactly one parameter must be provided')
    end

    it 'returns 400 if no new parameters given' do
      put api("/groups/#{group.id}/labels", user), params: { name: group_label1.name }

      expect(response).to have_gitlab_http_status(:bad_request)
      expect(json_response['error']).to eq('new_name, color, description are missing, '\
                                           'at least one parameter must be provided')
    end
  end

  describe 'PUT /groups/:id/labels/:label_id' do
    it 'returns 200 if name and colors and description are changed' do
      put api("/groups/#{group.id}/labels/#{valid_group_label_title_1_esc}", user),
          params: {
            new_name: valid_new_label_title,
            color: '#FFFFFF',
            description: 'test'
          }

      expect(response).to have_gitlab_http_status(:ok)
      expect(json_response['name']).to eq(valid_new_label_title)
      expect(json_response['color']).to eq('#FFFFFF')
      expect(json_response['description']).to eq('test')
    end

    it "does not update parent's group label" do
      subgroup = create(:group, parent: group)
      subgroup_label = create(:group_label, title: 'feature', group: subgroup)

      put api("/groups/#{subgroup.id}/labels/#{subgroup_label.name}", user),
          params: {
            new_name: valid_new_label_title
          }

      expect(response).to have_gitlab_http_status(:ok)
      expect(subgroup.labels[0].name).to eq(valid_new_label_title)
      expect(group_label1.name).to eq(group_label1.title)
    end

    it 'returns 404 if label does not exist' do
      put api("/groups/#{group.id}/labels/not_exists", user),
          params: {
            new_name: valid_new_label_title
          }

      expect(response).to have_gitlab_http_status(:not_found)
    end

    it 'returns 400 if no new parameters given' do
      put api("/groups/#{group.id}/labels/#{valid_group_label_title_1_esc}", user)

      expect(response).to have_gitlab_http_status(:bad_request)
      expect(json_response['error']).to eq('new_name, color, description are missing, '\
                                           'at least one parameter must be provided')
    end
  end

  describe 'POST /groups/:id/labels/:label_id/subscribe' do
    context 'when label_id is a label title' do
      it 'subscribes to the label' do
        post api("/groups/#{group.id}/labels/#{valid_group_label_title_1_esc}/subscribe", user)

        expect(response).to have_gitlab_http_status(:created)
        expect(json_response['name']).to eq(group_label1.title)
        expect(json_response['subscribed']).to be_truthy
      end
    end

    context 'when label_id is a label ID' do
      it 'subscribes to the label' do
        post api("/groups/#{group.id}/labels/#{group_label1.id}/subscribe", user)

        expect(response).to have_gitlab_http_status(:created)
        expect(json_response['name']).to eq(group_label1.title)
        expect(json_response['subscribed']).to be_truthy
      end
    end

    context 'when user is already subscribed to label' do
      before do
        group_label1.subscribe(user)
      end

      it 'returns 304' do
        post api("/groups/#{group.id}/labels/#{group_label1.id}/subscribe", user)

        expect(response).to have_gitlab_http_status(:not_modified)
      end
    end

    context 'when label ID is not found' do
      it 'returns 404 error' do
        post api("/groups/#{group.id}/labels/#{non_existing_record_id}/subscribe", user)

        expect(response).to have_gitlab_http_status(:not_found)
      end
    end
  end

  describe 'POST /groups/:id/labels/:label_id/unsubscribe' do
    before do
      group_label1.subscribe(user)
    end

    context 'when label_id is a label title' do
      it 'unsubscribes from the label' do
        post api("/groups/#{group.id}/labels/#{valid_group_label_title_1_esc}/unsubscribe", user)

        expect(response).to have_gitlab_http_status(:created)
        expect(json_response['name']).to eq(group_label1.title)
        expect(json_response['subscribed']).to be_falsey
      end
    end

    context 'when label_id is a label ID' do
      it 'unsubscribes from the label' do
        post api("/groups/#{group.id}/labels/#{group_label1.id}/unsubscribe", user)

        expect(response).to have_gitlab_http_status(:created)
        expect(json_response['name']).to eq(group_label1.title)
        expect(json_response['subscribed']).to be_falsey
      end
    end

    context 'when user is already unsubscribed from label' do
      before do
        group_label1.unsubscribe(user)
      end

      it 'returns 304' do
        post api("/groups/#{group.id}/labels/#{group_label1.id}/unsubscribe", user)

        expect(response).to have_gitlab_http_status(:not_modified)
      end
    end

    context 'when label ID is not found' do
      it 'returns 404 error' do
        post api("/groups/#{group.id}/labels/#{non_existing_record_id}/unsubscribe", user)

        expect(response).to have_gitlab_http_status(:not_found)
      end
    end
  end
end
