[Actionable Observability] Add Alert Details page header

x-pack/plugins/cases/public/components/case_view/components/case_view_alerts.tsx

@@ -28,6 +28,7 @@ export const CaseViewAlerts = ({ caseData }: CaseViewAlertsProps) => {
     }),
     [caseData.comments]
   );
+
   const alertRegistrationContexts = useMemo(
     () => getRegistrationContextFromAlerts(caseData.comments),
     [caseData.comments]

x-pack/plugins/cases/public/mocks.ts

@@ -21,9 +21,13 @@ const uiMock: jest.Mocked<CasesUiStart['ui']> = {
   getRecentCases: jest.fn(),
 };
 
+export const openAddToExistingCaseModalMock = jest.fn();
+
 const hooksMock: jest.Mocked<CasesUiStart['hooks']> = {
   getUseCasesAddToNewCaseFlyout: jest.fn(),
-  getUseCasesAddToExistingCaseModal: jest.fn(),
+  getUseCasesAddToExistingCaseModal: jest.fn().mockImplementation(() => ({
+    open: openAddToExistingCaseModalMock,
+  })),
 };
 
 const helpersMock: jest.Mocked<CasesUiStart['helpers']> = {

x-pack/plugins/observability/public/hooks/use_fetch_alert_detail.ts

@@ -21,7 +21,6 @@ interface AlertDetailParams {
 
 export const useFetchAlertDetail = (id: string): [boolean, TopAlert | null] => {
   const { observabilityRuleTypeRegistry } = usePluginContext();
-
   const params = useMemo(
     () => ({ id, ruleType: observabilityRuleTypeRegistry }),
     [id, observabilityRuleTypeRegistry]

x-pack/plugins/observability/public/pages/alert_details/components/alert_details.test.tsx

@@ -7,23 +7,58 @@
 
 import React from 'react';
 import * as useUiSettingHook from '@kbn/kibana-react-plugin/public/ui_settings/use_ui_setting';
+import { useParams } from 'react-router-dom';
+import { Chance } from 'chance';
+import { waitFor } from '@testing-library/react';
+import { casesPluginMock } from '@kbn/cases-plugin/public/mocks';
+import { triggersActionsUiMock } from '@kbn/triggers-actions-ui-plugin/public/mocks';
+
 import { render } from '../../../utils/test_helper';
+import { useKibana } from '../../../utils/kibana_react';
+import { kibanaStartMock } from '../../../utils/kibana_react.mock';
 import { useFetchAlertDetail } from '../../../hooks/use_fetch_alert_detail';
-import { AlertDetails } from './alert_details';
-import { Chance } from 'chance';
-import { useParams } from 'react-router-dom';
 import { useBreadcrumbs } from '../../../hooks/use_breadcrumbs';
+import { AlertDetails } from './alert_details';
 import { ConfigSchema } from '../../../plugin';
 import { alert, alertWithNoData } from '../mock/alert';
-import { waitFor } from '@testing-library/react';
 
-jest.mock('../../../hooks/use_fetch_alert_detail');
-jest.mock('../../../hooks/use_breadcrumbs');
 jest.mock('react-router-dom', () => ({
   ...jest.requireActual('react-router-dom'),
   useParams: jest.fn(),
 }));
 
+jest.mock('../../../utils/kibana_react');
+
+const useKibanaMock = useKibana as jest.Mock;
+
+const mockKibana = () => {
+  useKibanaMock.mockReturnValue({
+    services: {
+      ...kibanaStartMock.startContract(),
+      cases: casesPluginMock.createStartContract(),
+      http: {
+        basePath: {
+          prepend: jest.fn(),
+        },
+      },
+      triggersActionsUi: triggersActionsUiMock.createStart(),
+    },
+  });
+};
+
+jest.mock('../../../hooks/use_fetch_alert_detail');
+jest.mock('../../../hooks/use_breadcrumbs');
+jest.mock('../../../hooks/use_get_user_cases_permissions', () => ({
+  useGetUserCasesPermissions: () => ({
+    all: true,
+    create: true,
+    delete: true,
+    push: true,
+    read: true,
+    update: true,
+  }),
+}));
+
 const useFetchAlertDetailMock = useFetchAlertDetail as jest.Mock;
 const useParamsMock = useParams as jest.Mock;
 const useBreadcrumbsMock = useBreadcrumbs as jest.Mock;
@@ -49,16 +84,20 @@ describe('Alert details', () => {
     jest.clearAllMocks();
     useParamsMock.mockReturnValue(params);
     useBreadcrumbsMock.mockReturnValue([]);
+    mockKibana();
   });
 
-  it('should show alert summary', async () => {
+  it('should show the alert detail page with all necessary components', async () => {
     useFetchAlertDetailMock.mockReturnValue([false, alert]);
 
     const alertDetails = render(<AlertDetails />, config);
 
-    expect(alertDetails.queryByTestId('alertDetails')).toBeTruthy();
     await waitFor(() => expect(alertDetails.queryByTestId('centerJustifiedSpinner')).toBeFalsy());
+
+    expect(alertDetails.queryByTestId('alertDetails')).toBeTruthy();
     expect(alertDetails.queryByTestId('alertDetailsError')).toBeFalsy();
+    expect(alertDetails.queryByTestId('page-title-container')).toBeTruthy();
+    expect(alertDetails.queryByTestId('alert-summary-container')).toBeTruthy();
   });
 
   it('should show error loading the alert details', async () => {

x-pack/plugins/observability/public/pages/alert_details/components/alert_details.tsx

@@ -9,23 +9,36 @@ import React from 'react';
 import { i18n } from '@kbn/i18n';
 import { useParams } from 'react-router-dom';
 import { EuiEmptyPrompt, EuiPanel } from '@elastic/eui';
+
 import { useKibana } from '../../../utils/kibana_react';
-import { ObservabilityAppServices } from '../../../application/types';
 import { usePluginContext } from '../../../hooks/use_plugin_context';
 import { useBreadcrumbs } from '../../../hooks/use_breadcrumbs';
-import { paths } from '../../../config/paths';
-import { AlertDetailsPathParams } from '../types';
+import { useFetchAlertDetail } from '../../../hooks/use_fetch_alert_detail';
+
+import { AlertSummary, HeaderActions, PageTitle } from '.';
 import { CenterJustifiedSpinner } from '../../rule_details/components/center_justified_spinner';
-import { AlertSummary } from '.';
 import PageNotFound from '../../404';
-import { useFetchAlertDetail } from '../../../hooks/use_fetch_alert_detail';
+
+import { ObservabilityAppServices } from '../../../application/types';
+import { AlertDetailsPathParams } from '../types';
+import { observabilityFeatureId } from '../../../../common';
+import { paths } from '../../../config/paths';
 
 export function AlertDetails() {
-  const { http } = useKibana<ObservabilityAppServices>().services;
+  const {
+    http,
+    cases: {
+      helpers: { canUseCases },
+      ui: { getCasesContext },
+    },
+  } = useKibana<ObservabilityAppServices>().services;
   const { ObservabilityPageTemplate, config } = usePluginContext();
   const { alertId } = useParams<AlertDetailsPathParams>();
   const [isLoading, alert] = useFetchAlertDetail(alertId);
 
+  const CasesContext = getCasesContext();
+  const userCasesPermissions = canUseCases();
+
   useBreadcrumbs([
     {
       href: http.basePath.prepend(paths.observability.alerts),
@@ -69,7 +82,22 @@ export function AlertDetails() {
     );
 
   return (
-    <ObservabilityPageTemplate data-test-subj="alertDetails">
+    <ObservabilityPageTemplate
+      pageHeader={{
+        pageTitle: <PageTitle title={alert?.reason} active={Boolean(alert?.active)} />,
+        rightSideItems: [
+          <CasesContext
+            owner={[observabilityFeatureId]}
+            permissions={userCasesPermissions}
+            features={{ alerts: { sync: false } }}
+          >
+            <HeaderActions alert={alert} />
+          </CasesContext>,
+        ],
+        bottomBorder: false,
+      }}
+      data-test-subj="alertDetails"
+    >
       <AlertSummary alert={alert} />
     </ObservabilityPageTemplate>
   );

x-pack/plugins/observability/public/pages/alert_details/components/alert_summary.tsx

@@ -30,7 +30,7 @@ export function AlertSummary({ alert }: AlertSummaryProps) {
   const tags = alert?.fields[ALERT_RULE_TAGS];
 
   return (
-    <>
+    <div data-test-subj="alert-summary-container">
       <EuiFlexGroup>
         <EuiFlexItem>
           <EuiTitle size="xxs">
@@ -161,6 +161,6 @@ export function AlertSummary({ alert }: AlertSummaryProps) {
           </div>
         </EuiFlexItem>
       </EuiFlexGroup>
-    </>
+    </div>
   );
 }

x-pack/plugins/observability/public/pages/alert_details/components/header_actions.test.tsx

@@ -0,0 +1,83 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import React from 'react';
+import { fireEvent } from '@testing-library/react';
+import { triggersActionsUiMock } from '@kbn/triggers-actions-ui-plugin/public/mocks';
+import { casesPluginMock, openAddToExistingCaseModalMock } from '@kbn/cases-plugin/public/mocks';
+
+import { render } from '../../../utils/test_helper';
+import { useKibana } from '../../../utils/kibana_react';
+import { kibanaStartMock } from '../../../utils/kibana_react.mock';
+import { alertWithTags, mockAlertUuid } from '../mock/alert';
+
+import { HeaderActions } from './header_actions';
+
+jest.mock('../../../utils/kibana_react');
+
+const useKibanaMock = useKibana as jest.Mock;
+
+const mockKibana = () => {
+  useKibanaMock.mockReturnValue({
+    services: {
+      ...kibanaStartMock.startContract(),
+      triggersActionsUi: triggersActionsUiMock.createStart(),
+      cases: casesPluginMock.createStartContract(),
+    },
+  });
+};
+
+const ruleId = '123';
+const ruleName = '456';
+
+jest.mock('../../../hooks/use_fetch_rule', () => {
+  return {
+    useFetchRule: () => ({
+      reloadRule: jest.fn(),
+      rule: {
+        id: ruleId,
+        name: ruleName,
+      },
+    }),
+  };
+});
+
+describe('Header Actions', () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+    mockKibana();
+  });
+
+  it('should display an actions button', () => {
+    const { queryByTestId } = render(<HeaderActions alert={alertWithTags} />);
+    expect(queryByTestId('alert-details-header-actions-menu-button')).toBeTruthy();
+  });
+
+  describe('when clicking the actions button', () => {
+    it('should offer an "add to case" button which opens the add to case modal', async () => {
+      const { getByTestId, findByRole } = render(<HeaderActions alert={alertWithTags} />);
+
+      fireEvent.click(await findByRole('button', { name: 'Actions' }));
+
+      fireEvent.click(getByTestId('add-to-case-button'));
+
+      expect(openAddToExistingCaseModalMock).toBeCalledWith({
+        attachments: [
+          {
+            alertId: mockAlertUuid,
+            index: '.internal.alerts-observability.metrics.alerts-*',
+            rule: {
+              id: ruleId,
+              name: ruleName,
+            },
+            type: 'alert',
+          },
+        ],
+      });
+    });
+  });
+});