[Security Solution] KPI visualizations on Alerts Page (#149173)

## Summary

This PR is a part 2 of #146938
that populates the remaining 2 charts for the summary section on Alerts
Page.

Capabilities added

- Alerts by type: alert count by rule and by type (prevention vs.
detection)
- Top alerts: top 10 alert grouping based on user selected drop down

Changes from previous PR

- Refactor `useSeverityChartData` to `useSummaryChartData` so that it
can be used by all 3 charts to fetch data
- Move `SeverityLevel` chart up one level to `alerts_kpi` folder to
better isolate components for testing.

Feature flag: `alertsPageChartsEnabled`


![image](https://user-images.githubusercontent.com/18648970/213945018-57a15c60-ed53-4e86-90f5-c1909e88420d.png)

### Checklist

Delete any items that are not applicable to this PR.

- [x] Any text added follows [EUI's writing
guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses
sentence case text and includes [i18n
support](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)
- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [x] This renders correctly on smaller devices using a responsive
layout. (You can test this [in your
browser](https://www.browserstack.com/guide/responsive-testing-on-local-server))
- [x] This was checked for [cross-browser
compatibility](https://www.elastic.co/support/matrix#matrix_browsers)


### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

x-pack/plugins/security_solution/public/common/components/draggables/index.tsx

@@ -31,6 +31,7 @@ export interface DefaultDraggableType {
   scopeId?: string;
   tooltipContent?: React.ReactNode;
   tooltipPosition?: ToolTipPositions;
+  truncate?: boolean;
 }
 
 /**
@@ -111,6 +112,7 @@ export const DefaultDraggable = React.memo<DefaultDraggableType>(
     tooltipContent,
     tooltipPosition,
     queryValue,
+    truncate,
   }) => {
     const dataProviderProp: DataProvider = useMemo(
       () => ({
@@ -159,6 +161,7 @@ export const DefaultDraggable = React.memo<DefaultDraggableType>(
         isDraggable={isDraggable}
         render={renderCallback}
         scopeId={scopeId}
+        truncate={truncate}
       />
     );
   }

x-pack/plugins/security_solution/public/detections/components/alerts_kpis/alerts_by_type_panel/alerts_by_type.test.tsx

@@ -0,0 +1,100 @@
+/*
+ * 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 { act, render } from '@testing-library/react';
+import React from 'react';
+import { TestProviders } from '../../../../common/mock';
+import { AlertsByType } from './alerts_by_type';
+import { parsedAlerts } from './mock_data';
+
+const display = 'alerts-by-type-palette-display';
+
+jest.mock('../../../../common/lib/kibana');
+
+jest.mock('react-router-dom', () => {
+  const actual = jest.requireActual('react-router-dom');
+  return { ...actual, useLocation: jest.fn().mockReturnValue({ pathname: '' }) };
+});
+
+describe('Alert by type chart', () => {
+  const defaultProps = {
+    data: [],
+    isLoading: false,
+  };
+
+  afterEach(() => {
+    jest.clearAllMocks();
+    jest.restoreAllMocks();
+  });
+
+  test('renders health and pallette display correctly without data', () => {
+    act(() => {
+      const { container } = render(
+        <TestProviders>
+          <AlertsByType {...defaultProps} />
+        </TestProviders>
+      );
+      expect(container.querySelector(`[data-test-subj="${display}"]`)).toBeInTheDocument();
+      expect(container.querySelector(`[data-test-subj="${display}"]`)?.textContent).toContain(
+        'Detection:0'
+      );
+      expect(container.querySelector(`[data-test-subj="${display}"]`)?.textContent).toContain(
+        'Prevention:0'
+      );
+    });
+  });
+
+  test('renders table correctly without data', () => {
+    act(() => {
+      const { container } = render(
+        <TestProviders>
+          <AlertsByType {...defaultProps} />
+        </TestProviders>
+      );
+      expect(
+        container.querySelector('[data-test-subj="alerts-by-type-table"]')
+      ).toBeInTheDocument();
+      expect(
+        container.querySelector('[data-test-subj="alerts-by-type-table"] tbody')?.textContent
+      ).toEqual('No items found');
+    });
+  });
+
+  test('renders health and pallette display correctly with data', () => {
+    act(() => {
+      const { container } = render(
+        <TestProviders>
+          <AlertsByType data={parsedAlerts} isLoading={false} />
+        </TestProviders>
+      );
+      expect(container.querySelector(`[data-test-subj="${display}"]`)).toBeInTheDocument();
+      expect(container.querySelector(`[data-test-subj="${display}"]`)?.textContent).toContain(
+        'Detection:583'
+      );
+      expect(container.querySelector(`[data-test-subj="${display}"]`)?.textContent).toContain(
+        'Prevention:6'
+      );
+    });
+  });
+
+  test('renders table correctly with data', () => {
+    act(() => {
+      const { queryAllByRole } = render(
+        <TestProviders>
+          <AlertsByType data={parsedAlerts} isLoading={false} />
+        </TestProviders>
+      );
+
+      parsedAlerts.forEach((_, i) => {
+        expect(queryAllByRole('row')[i + 1].textContent).toContain(parsedAlerts[i].rule);
+        expect(queryAllByRole('row')[i + 1].textContent).toContain(parsedAlerts[i].type);
+        expect(queryAllByRole('row')[i + 1].textContent).toContain(
+          parsedAlerts[i].value.toString()
+        );
+      });
+    });
+  });
+});

x-pack/plugins/security_solution/public/detections/components/alerts_kpis/alerts_by_type_panel/alerts_by_type.tsx

@@ -0,0 +1,134 @@
+/*
+ * 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 {
+  EuiFlexItem,
+  EuiInMemoryTable,
+  EuiColorPaletteDisplay,
+  EuiSpacer,
+  EuiFlexGroup,
+  EuiHealth,
+  EuiText,
+} from '@elastic/eui';
+import React, { useMemo } from 'react';
+import styled from 'styled-components';
+import type { SortOrder } from '@elastic/elasticsearch/lib/api/typesWithBodyKey';
+import type { AlertsTypeData, AlertType } from './types';
+import { FormattedCount } from '../../../../common/components/formatted_number';
+import { getAlertsTypeTableColumns } from './columns';
+import { ALERT_TYPE_COLOR } from './helpers';
+
+const Wrapper = styled.div`
+  margin-top: -${({ theme }) => theme.eui.euiSizeM};
+`;
+const TableWrapper = styled.div`
+  height: 178px;
+`;
+const StyledEuiColorPaletteDisplay = styled(EuiColorPaletteDisplay)`
+  border: none;
+  border-radius: 0;
+`;
+interface PalletteObject {
+  stop: number;
+  color: string;
+}
+
+export interface AlertsByTypeProps {
+  data: AlertsTypeData[];
+  isLoading: boolean;
+}
+
+export const AlertsByType: React.FC<AlertsByTypeProps> = ({ data, isLoading }) => {
+  const columns = useMemo(() => getAlertsTypeTableColumns(), []);
+
+  const subtotals = useMemo(
+    () =>
+      data.reduce(
+        (acc: { Detection: number; Prevention: number }, item: AlertsTypeData) => {
+          if (item.type === 'Detection') {
+            acc.Detection += item.value;
+          }
+          if (item.type === 'Prevention') {
+            acc.Prevention += item.value;
+          }
+          return acc;
+        },
+        { Detection: 0, Prevention: 0 }
+      ),
+    [data]
+  );
+
+  const palette: PalletteObject[] = useMemo(
+    () =>
+      (Object.keys(subtotals) as AlertType[]).reduce((acc: PalletteObject[], type: AlertType) => {
+        const previousStop = acc.length > 0 ? acc[acc.length - 1].stop : 0;
+        if (subtotals[type]) {
+          const newEntry: PalletteObject = {
+            stop: previousStop + (subtotals[type] || 0),
+            color: ALERT_TYPE_COLOR[type],
+          };
+          acc.push(newEntry);
+        }
+        return acc;
+      }, [] as PalletteObject[]),
+    [subtotals]
+  );
+
+  const sorting: { sort: { field: keyof AlertsTypeData; direction: SortOrder } } = {
+    sort: {
+      field: 'value',
+      direction: 'desc',
+    },
+  };
+
+  const pagination: {} = {
+    pageSize: 25,
+    showPerPageOptions: false,
+  };
+
+  return (
+    <Wrapper data-test-subj="alerts-by-type">
+      <EuiFlexGroup gutterSize="xs" data-test-subj="alerts-by-type-palette-display">
+        {(Object.keys(subtotals) as AlertType[]).map((type) => (
+          <EuiFlexItem key={type} grow={false}>
+            <EuiFlexGroup alignItems="center" gutterSize="xs">
+              <EuiFlexItem grow={false}>
+                <EuiHealth className="eui-alignMiddle" color={ALERT_TYPE_COLOR[type]}>
+                  <EuiText size="xs">
+                    <h4>{`${type}:`}</h4>
+                  </EuiText>
+                </EuiHealth>
+              </EuiFlexItem>
+              <EuiFlexItem grow={false}>
+                <EuiText size="xs">
+                  <FormattedCount count={subtotals[type] || 0} />
+                </EuiText>
+              </EuiFlexItem>
+            </EuiFlexGroup>
+          </EuiFlexItem>
+        ))}
+        <EuiSpacer size="xs" />
+      </EuiFlexGroup>
+      <EuiSpacer size="xs" />
+      <StyledEuiColorPaletteDisplay size="xs" palette={palette} />
+
+      <EuiSpacer size="xs" />
+      <TableWrapper className="eui-yScroll">
+        <EuiInMemoryTable
+          data-test-subj="alerts-by-type-table"
+          columns={columns}
+          items={data}
+          loading={isLoading}
+          sorting={sorting}
+          pagination={pagination}
+        />
+      </TableWrapper>
+    </Wrapper>
+  );
+};
+
+AlertsByType.displayName = 'AlertsByType';

x-pack/plugins/security_solution/public/detections/components/alerts_kpis/alerts_by_type_panel/columns.tsx

@@ -0,0 +1,69 @@
+/*
+ * 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 { EuiHealth, EuiText } from '@elastic/eui';
+import { ALERT_RULE_NAME } from '@kbn/rule-data-utils';
+import type { EuiBasicTableColumn } from '@elastic/eui';
+import type { AlertsTypeData, AlertType } from './types';
+import { DefaultDraggable } from '../../../../common/components/draggables';
+import { FormattedCount } from '../../../../common/components/formatted_number';
+import { ALERTS_HEADERS_RULE_NAME } from '../../alerts_table/translations';
+import { ALERT_TYPE_COLOR } from './helpers';
+import { COUNT_TABLE_TITLE } from '../alerts_count_panel/translations';
+import * as i18n from './translations';
+
+export const getAlertsTypeTableColumns = (): Array<EuiBasicTableColumn<AlertsTypeData>> => [
+  {
+    field: 'rule',
+    name: ALERTS_HEADERS_RULE_NAME,
+    'data-test-subj': 'detectionsTable-rule',
+    truncateText: true,
+    render: (rule: string) => (
+      <EuiText size="xs" className="eui-textTruncate">
+        <DefaultDraggable
+          isDraggable={false}
+          field={ALERT_RULE_NAME}
+          hideTopN={true}
+          id={`alert-detection-draggable-${rule}`}
+          value={rule}
+          queryValue={rule}
+          tooltipContent={null}
+          truncate={true}
+        />
+      </EuiText>
+    ),
+  },
+  {
+    field: 'type',
+    name: i18n.ALERTS_TYPE_COLUMN_TITLE,
+    'data-test-subj': 'detectionsTable-type',
+    truncateText: true,
+    render: (type: string) => {
+      return (
+        <EuiHealth color={ALERT_TYPE_COLOR[type as AlertType]}>
+          <EuiText grow={false} size="xs">
+            {type}
+          </EuiText>
+        </EuiHealth>
+      );
+    },
+    width: '30%',
+  },
+  {
+    field: 'value',
+    name: COUNT_TABLE_TITLE,
+    dataType: 'number',
+    sortable: true,
+    'data-test-subj': 'detectionsTable-count',
+    render: (count: number) => (
+      <EuiText grow={false} size="xs">
+        <FormattedCount count={count} />
+      </EuiText>
+    ),
+    width: '22%',
+  },
+];

x-pack/plugins/security_solution/public/detections/components/alerts_kpis/alerts_by_type_panel/helpers.test.tsx

@@ -0,0 +1,26 @@
+/*
+ * 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 { parseAlertsTypeData } from './helpers';
+import * as mock from './mock_data';
+import type { AlertsByTypeAgg } from './types';
+import type { AlertSearchResponse } from '../../../containers/detection_engine/alerts/types';
+
+describe('parse alerts by type data', () => {
+  test('parse alerts with data', () => {
+    const res = parseAlertsTypeData(
+      mock.mockAlertsData as AlertSearchResponse<{}, AlertsByTypeAgg>
+    );
+    expect(res).toEqual(mock.parsedAlerts);
+  });
+
+  test('parse alerts without data', () => {
+    const res = parseAlertsTypeData(
+      mock.mockAlertsEmptyData as AlertSearchResponse<{}, AlertsByTypeAgg>
+    );
+    expect(res).toEqual([]);
+  });
+});