# frozen_string_literal: true

require "spec_helper"

RSpec.describe API::Integrations, feature_category: :integrations do
  let_it_be(:user) { create(:user) }
  let_it_be(:user2) { create(:user) }

  let_it_be(:project, reload: true) do
    create(:project, creator_id: user.id, namespace: user.namespace)
  end

  # The API supports all integrations except the GitLab Slack Application
  # integration; this integration must be installed via the UI.
  def self.integration_names
    names = Integration.available_integration_names
    names.delete(Integrations::GitlabSlackApplication.to_param) if Gitlab.ee?
    names
  end

  %w[integrations services].each do |endpoint|
    describe "GET /projects/:id/#{endpoint}" do
      it 'returns authentication error when unauthenticated' do
        get api("/projects/#{project.id}/#{endpoint}")

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

      it "returns error when authenticated but user is not a project owner" do
        project.add_developer(user2)
        get api("/projects/#{project.id}/#{endpoint}", user2)

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

      context 'with integrations' do
        let!(:active_integration) { create(:emails_on_push_integration, project: project, active: true) }
        let!(:integration) { create(:custom_issue_tracker_integration, project: project, active: false) }

        it "returns a list of all active integrations" do
          get api("/projects/#{project.id}/#{endpoint}", user)

          aggregate_failures 'expect successful response with all active integrations' do
            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response).to be_an Array
            expect(json_response.count).to eq(1)
            expect(json_response.first['slug']).to eq('emails-on-push')
            expect(response).to match_response_schema('public_api/v4/integrations')
          end
        end
      end
    end

    integration_names.each do |integration|
      describe "PUT /projects/:id/#{endpoint}/#{integration.dasherize}" do
        include_context integration

        # NOTE: Some attributes are not supported for PUT requests, even though they probably should be.
        # We can fix these manually, or with a generic approach like https://gitlab.com/gitlab-org/gitlab/-/issues/348208
        let(:missing_attributes) do
          {
            datadog: %i[archive_trace_events],
            discord: %i[branches_to_be_notified notify_only_broken_pipelines],
            hangouts_chat: %i[notify_only_broken_pipelines],
            jira: %i[issues_enabled project_key vulnerabilities_enabled vulnerabilities_issuetype],
            mattermost: %i[deployment_channel labels_to_be_notified],
            mock_ci: %i[enable_ssl_verification],
            prometheus: %i[manual_configuration],
            pumble: %i[branches_to_be_notified notify_only_broken_pipelines],
            slack: %i[alert_events alert_channel deployment_channel labels_to_be_notified],
            unify_circuit: %i[branches_to_be_notified notify_only_broken_pipelines],
            webex_teams: %i[branches_to_be_notified notify_only_broken_pipelines]
          }
        end

        it "updates #{integration} settings and returns the correct fields" do
          supported_attrs = integration_attrs.without(missing_attributes.fetch(integration.to_sym, []))

          put api("/projects/#{project.id}/#{endpoint}/#{dashed_integration}", user), params: supported_attrs

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response['slug']).to eq(dashed_integration)

          current_integration = project.integrations.first
          expect(current_integration).to have_attributes(supported_attrs)
          assert_correct_response_fields(json_response['properties'].keys, current_integration)

          # Flip all booleans and verify that we can set these too
          flipped_attrs = supported_attrs.transform_values do |value|
            [true, false].include?(value) ? !value : value
          end

          put api("/projects/#{project.id}/#{endpoint}/#{dashed_integration}", user), params: flipped_attrs

          expect(response).to have_gitlab_http_status(:ok)
          expect(project.integrations.first).to have_attributes(flipped_attrs)
        end

        it "returns if required fields missing" do
          required_attributes = integration_attrs_list.select do |attr|
            integration_klass.validators_on(attr).any? do |v|
              v.instance_of?(ActiveRecord::Validations::PresenceValidator) &&
                # exclude presence validators with conditional since those are not really required
                ![:if, :unless].any? { |cond| v.options.include?(cond) }
            end
          end

          if required_attributes.empty?
            expected_code = :ok
          else
            integration_attrs.delete(required_attributes.sample)
            expected_code = :bad_request
          end

          put api("/projects/#{project.id}/#{endpoint}/#{dashed_integration}", user), params: integration_attrs

          expect(response).to have_gitlab_http_status(expected_code)
        end
      end

      describe "DELETE /projects/:id/#{endpoint}/#{integration.dasherize}" do
        include_context integration

        before do
          initialize_integration(integration)
        end

        it "deletes #{integration}" do
          delete api("/projects/#{project.id}/#{endpoint}/#{dashed_integration}", user)

          expect(response).to have_gitlab_http_status(:no_content)
          project.send(integration_method).reload
          expect(project.send(integration_method).activated?).to be_falsey
        end
      end

      describe "GET /projects/:id/#{endpoint}/#{integration.dasherize}" do
        include_context integration

        let!(:initialized_integration) { initialize_integration(integration, active: true) }

        let_it_be(:project2) do
          create(:project, creator_id: user.id, namespace: user.namespace)
        end

        def deactive_integration!
          return initialized_integration.update!(active: false) unless initialized_integration.is_a?(::Integrations::Prometheus)

          # Integrations::Prometheus sets `#active` itself within a `before_save`:
          initialized_integration.manual_configuration = false
          initialized_integration.save!
        end

        it 'returns authentication error when unauthenticated' do
          get api("/projects/#{project.id}/#{endpoint}/#{dashed_integration}")
          expect(response).to have_gitlab_http_status(:unauthorized)
        end

        it "returns all properties of active integration #{integration}, except password fields" do
          get api("/projects/#{project.id}/#{endpoint}/#{dashed_integration}", user)

          expect(initialized_integration).to be_active
          expect(response).to have_gitlab_http_status(:ok)

          assert_correct_response_fields(json_response['properties'].keys, integration_instance)
        end

        it "returns all properties of inactive integration #{integration}, except password fields" do
          deactive_integration!

          get api("/projects/#{project.id}/#{endpoint}/#{dashed_integration}", user)

          expect(initialized_integration).not_to be_active
          expect(response).to have_gitlab_http_status(:ok)

          assert_correct_response_fields(json_response['properties'].keys, integration_instance)
        end

        it "returns not found if integration does not exist" do
          get api("/projects/#{project2.id}/#{endpoint}/#{dashed_integration}", user)

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

        it "returns not found if integration exists but is in `Project#disabled_integrations`" do
          expect_next_found_instance_of(Project) do |project|
            expect(project).to receive(:disabled_integrations).at_least(:once).and_return([integration])
          end

          get api("/projects/#{project.id}/#{endpoint}/#{dashed_integration}", user)

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

        it "returns error when authenticated but not a project owner" do
          project.add_developer(user2)
          get api("/projects/#{project.id}/#{endpoint}/#{dashed_integration}", user2)

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

    describe "POST /projects/:id/#{endpoint}/:slug/trigger" do
      describe 'Mattermost integration' do
        let(:integration_name) { 'mattermost_slash_commands' }

        context 'when no integration is available' do
          it 'returns a not found message' do
            post api("/projects/#{project.id}/#{endpoint}/idonotexist/trigger")

            expect(response).to have_gitlab_http_status(:not_found)
            expect(json_response["error"]).to eq("404 Not Found")
          end
        end

        context 'when the integration exists' do
          let(:params) { { token: 'token' } }

          context 'when the integration is not active' do
            before do
              project.create_mattermost_slash_commands_integration(
                active: false,
                properties: params
              )
            end

            it 'when the integration is inactive' do
              post api("/projects/#{project.id}/#{endpoint}/#{integration_name}/trigger"), params: params

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

          context 'when the integration is active' do
            before do
              project.create_mattermost_slash_commands_integration(
                active: true,
                properties: params
              )
            end

            it 'returns status 200' do
              post api("/projects/#{project.id}/#{endpoint}/#{integration_name}/trigger"), params: params

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

          context 'when the project can not be found' do
            it 'returns a generic 404' do
              post api("/projects/404/#{endpoint}/#{integration_name}/trigger"), params: params

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

      describe 'Slack Integration' do
        let(:integration_name) { 'slack_slash_commands' }

        before do
          project.create_slack_slash_commands_integration(
            active: true,
            properties: { token: 'token' }
          )
        end

        it 'returns status 200' do
          post api("/projects/#{project.id}/#{endpoint}/#{integration_name}/trigger"), params: { token: 'token', text: 'help' }

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response['response_type']).to eq("ephemeral")
        end
      end
    end

    describe 'Mattermost integration' do
      let(:integration_name) { 'mattermost' }
      let(:params) do
        { webhook: 'https://hook.example.com', username: 'username' }
      end

      before do
        project.create_mattermost_integration(
          active: true,
          properties: params
        )
      end

      it 'accepts a username for update' do
        put api("/projects/#{project.id}/#{endpoint}/#{integration_name}", user), params: params.merge(username: 'new_username')

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['properties']['username']).to eq('new_username')
      end
    end

    describe 'Microsoft Teams integration' do
      let(:integration_name) { 'microsoft-teams' }
      let(:params) do
        {
          webhook: 'https://hook.example.com',
          branches_to_be_notified: 'default',
          notify_only_broken_pipelines: false
        }
      end

      before do
        project.create_microsoft_teams_integration(
          active: true,
          properties: params
        )
      end

      it 'accepts branches_to_be_notified for update' do
        put api("/projects/#{project.id}/#{endpoint}/#{integration_name}", user),
            params: params.merge(branches_to_be_notified: 'all')

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['properties']['branches_to_be_notified']).to eq('all')
      end

      it 'accepts notify_only_broken_pipelines for update' do
        put api("/projects/#{project.id}/#{endpoint}/#{integration_name}", user),
            params: params.merge(notify_only_broken_pipelines: true)

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['properties']['notify_only_broken_pipelines']).to eq(true)
      end
    end

    describe 'Hangouts Chat integration' do
      let(:integration_name) { 'hangouts-chat' }
      let(:params) do
        {
          webhook: 'https://hook.example.com',
          branches_to_be_notified: 'default'
        }
      end

      before do
        project.create_hangouts_chat_integration(
          active: true,
          properties: params
        )
      end

      it 'accepts branches_to_be_notified for update', :aggregate_failures do
        put api("/projects/#{project.id}/#{endpoint}/#{integration_name}", user), params: params.merge(branches_to_be_notified: 'all')

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['properties']['branches_to_be_notified']).to eq('all')
      end

      it 'only requires the webhook param' do
        put api("/projects/#{project.id}/#{endpoint}/#{integration_name}", user), params: { webhook: 'https://hook.example.com' }

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

    describe 'Jira integration' do
      let(:integration_name) { 'jira' }
      let(:params) do
        { url: 'https://jira.example.com', username: 'username', password: 'password' }
      end

      before do
        project.create_jira_integration(active: true, properties: params)
      end

      it 'returns the jira_issue_transition_id for get request' do
        get api("/projects/#{project.id}/#{endpoint}/#{integration_name}", user)

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['properties']).to include('jira_issue_transition_id' => nil)
      end

      it 'returns the jira_issue_transition_id for put request' do
        put api("/projects/#{project.id}/#{endpoint}/#{integration_name}", user), params: params.merge(jira_issue_transition_id: '1')

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['properties']['jira_issue_transition_id']).to eq('1')
      end
    end

    describe 'Pipelines Email Integration' do
      let(:integration_name) { 'pipelines-email' }

      context 'notify_only_broken_pipelines property was saved as a string' do
        before do
          project.create_pipelines_email_integration(
            active: false,
            properties: {
              "notify_only_broken_pipelines": "true",
              "branches_to_be_notified": "default"
            }
          )
        end

        it 'returns boolean values for notify_only_broken_pipelines' do
          get api("/projects/#{project.id}/#{endpoint}/#{integration_name}", user)

          expect(json_response['properties']['notify_only_broken_pipelines']).to eq(true)
        end
      end
    end

    private

    def assert_correct_response_fields(response_keys, integration)
      assert_fields_match_integration(response_keys, integration)
      assert_secret_fields_filtered(response_keys, integration)
    end

    def assert_fields_match_integration(response_keys, integration)
      expect(response_keys).to match_array(integration.api_field_names)
    end

    def assert_secret_fields_filtered(response_keys, integration)
      expect(response_keys).not_to include(*integration.secret_fields)
    end
  end
end