Add service to get sentry projects list

app/services/error_tracking/list_projects_service.rb

@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+module ErrorTracking
+  class ListProjectsService < ::BaseService
+    def execute
+      return error('access denied') unless can_read?
+
+      setting = project_error_tracking_setting
+
+      unless setting.valid?
+        return error(setting.errors.full_messages.join(', '), :bad_request)
+      end
+
+      begin
+        result = setting.list_sentry_projects
+      rescue Sentry::Client::Error => e
+        return error(e.message, :bad_request)
+      rescue Sentry::Client::SentryError => e
+        return error(e.message, :unprocessable_entity)
+      end
+
+      success(projects: result[:projects])
+    end
+
+    private
+
+    def project_error_tracking_setting
+      (project.error_tracking_setting || project.build_error_tracking_setting).tap do |setting|
+        setting.api_url = ErrorTracking::ProjectErrorTrackingSetting.build_api_url_from(
+          api_host: params[:api_host],
+          organization_slug: nil,
+          project_slug: nil
+        )
+
+        setting.token = params[:token]
+        setting.enabled = true
+      end
+    end
+
+    def can_read?
+      can?(current_user, :read_sentry_issue, project)
+    end
+  end
+end

spec/services/error_tracking/list_projects_service_spec.rb

@@ -0,0 +1,149 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe ErrorTracking::ListProjectsService do
+  set(:user) { create(:user) }
+  set(:project) { create(:project) }
+
+  let(:sentry_url) { 'https://sentrytest.gitlab.com/api/0/projects/sentry-org/sentry-project' }
+  let(:token) { 'test-token' }
+  let(:new_api_host) { 'https://gitlab.com/' }
+  let(:new_token) { 'new-token' }
+  let(:params) { ActionController::Parameters.new(api_host: new_api_host, token: new_token) }
+
+  let(:error_tracking_setting) do
+    create(:project_error_tracking_setting, api_url: sentry_url, token: token, project: project)
+  end
+
+  subject { described_class.new(project, user, params) }
+
+  before do
+    project.add_reporter(user)
+  end
+
+  describe '#execute' do
+    let(:result) { subject.execute }
+
+    context 'with authorized user' do
+      before do
+        expect(project).to receive(:error_tracking_setting).at_least(:once)
+          .and_return(error_tracking_setting)
+      end
+
+      context 'set model attributes to new values' do
+        let(:new_api_url) { new_api_host + 'api/0/projects/' }
+
+        before do
+          expect(error_tracking_setting).to receive(:list_sentry_projects)
+            .and_return({ projects: [] })
+        end
+
+        it 'uses new api_url and token' do
+          subject.execute
+
+          expect(error_tracking_setting.api_url).to eq(new_api_url)
+          expect(error_tracking_setting.token).to eq(new_token)
+          error_tracking_setting.reload
+          expect(error_tracking_setting.api_url).to eq(sentry_url)
+          expect(error_tracking_setting.token).to eq(token)
+        end
+      end
+
+      context 'sentry client raises exception' do
+        before do
+          expect(error_tracking_setting).to receive(:list_sentry_projects)
+            .and_raise(Sentry::Client::Error, 'Sentry response error: 500')
+        end
+
+        it 'returns error response' do
+          expect(result[:message]).to eq('Sentry response error: 500')
+          expect(result[:http_status]).to eq(:bad_request)
+        end
+      end
+
+      context 'with invalid url' do
+        let(:params) do
+          ActionController::Parameters.new(
+            api_host: 'https://localhost',
+            token: new_token
+          )
+        end
+
+        before do
+          error_tracking_setting.enabled = false
+        end
+
+        it 'returns error' do
+          expect(result[:message]).to start_with('Api url is blocked')
+          expect(error_tracking_setting).not_to be_valid
+        end
+      end
+
+      context 'when list_sentry_projects returns projects' do
+        let(:projects) { [:list, :of, :projects] }
+
+        before do
+          expect(error_tracking_setting)
+            .to receive(:list_sentry_projects).and_return(projects: projects)
+        end
+
+        it 'returns the projects' do
+          expect(result).to eq(status: :success, projects: projects)
+        end
+      end
+    end
+
+    context 'with unauthorized user' do
+      before do
+        project.add_guest(user)
+      end
+
+      it 'returns error' do
+        expect(result).to include(status: :error, message: 'access denied')
+      end
+    end
+
+    context 'with error tracking disabled' do
+      before do
+        expect(project).to receive(:error_tracking_setting).at_least(:once)
+          .and_return(error_tracking_setting)
+        expect(error_tracking_setting)
+          .to receive(:list_sentry_projects).and_return(projects: [])
+
+        error_tracking_setting.enabled = false
+      end
+
+      it 'ignores enabled flag' do
+        expect(result).to include(status: :success, projects: [])
+      end
+    end
+
+    context 'error_tracking_setting is nil' do
+      let(:error_tracking_setting) { build(:project_error_tracking_setting) }
+      let(:new_api_url) { new_api_host + 'api/0/projects/' }
+
+      before do
+        expect(project).to receive(:build_error_tracking_setting).once
+          .and_return(error_tracking_setting)
+
+        expect(error_tracking_setting).to receive(:list_sentry_projects)
+          .and_return(projects: [:project1, :project2])
+      end
+
+      it 'builds a new error_tracking_setting' do
+        expect(project.error_tracking_setting).to be_nil
+
+        expect(result[:projects]).to eq([:project1, :project2])
+
+        expect(error_tracking_setting.api_url).to eq(new_api_url)
+        expect(error_tracking_setting.token).to eq(new_token)
+        expect(error_tracking_setting.enabled).to be true
+        expect(error_tracking_setting.persisted?).to be false
+        expect(error_tracking_setting.project_id).not_to be_nil
+
+        expect(project.error_tracking_setting).to be_nil
+      end
+    end
+  end
+end