feat: show the metrics summary chart (#6297)

Creates the impressions summary chart 
<img width="1358" alt="Screenshot 2024-02-21 at 13 25 05"
src="https://github.com/Unleash/unleash/assets/104830839/ddf15637-34de-4883-9ef7-517e37eab331">

Closes #
[1-2060](https://linear.app/unleash/issue/1-2060/impressions-summary-widget-frontend)

---------

Signed-off-by: andreas-unleash <andreas@getunleash.ai>
Co-authored-by: Tymoteusz Czech <2625371+Tymek@users.noreply.github.com>

frontend/src/component/executiveDashboard/ExecutiveDashboard.tsx

@@ -18,6 +18,11 @@ import { ProjectHealthChart } from './ProjectHealthChart/ProjectHealthChart';
 import { TimeToProductionChart } from './TimeToProductionChart/TimeToProductionChart';
 import { TimeToProduction } from './TimeToProduction/TimeToProduction';
 import { ProjectSelect, allOption } from './ProjectSelect/ProjectSelect';
+import { MetricsSummaryChart } from './MetricsSummaryChart/MetricsSummaryChart';
+import {
+    ExecutiveSummarySchemaMetricsSummaryTrendsItem,
+    ExecutiveSummarySchemaProjectFlagTrendsItem,
+} from '../../openapi';
 import { HealthStats } from './HealthStats/HealthStats';
 
 const StyledGrid = styled(Box)(({ theme }) => ({
@@ -61,6 +66,11 @@ const useDashboardGrid = () => {
     };
 };
 
+interface FilteredProjectData {
+    filteredProjectFlagTrends: ExecutiveSummarySchemaProjectFlagTrendsItem[];
+    filteredMetricsSummaryTrends: ExecutiveSummarySchemaMetricsSummaryTrendsItem[];
+}
+
 export const ExecutiveDashboard: VFC = () => {
     const { executiveDashboardData, loading, error } = useExecutiveDashboard();
     const [projects, setProjects] = useState([allOption.id]);
@@ -78,15 +88,32 @@ export const ExecutiveDashboard: VFC = () => {
         ).toFixed(1);
     }, [executiveDashboardData]);
 
-    const filteredProjectFlagTrends = useMemo(() => {
-        if (projects[0] === allOption.id) {
-            return executiveDashboardData.projectFlagTrends;
-        }
+    const { filteredProjectFlagTrends, filteredMetricsSummaryTrends } =
+        useMemo<FilteredProjectData>(() => {
+            if (projects[0] === allOption.id) {
+                return {
+                    filteredProjectFlagTrends:
+                        executiveDashboardData.projectFlagTrends,
+                    filteredMetricsSummaryTrends:
+                        executiveDashboardData.metricsSummaryTrends,
+                };
+            }
 
-        return executiveDashboardData.projectFlagTrends.filter((trend) =>
-            projects.includes(trend.project),
-        );
-    }, [executiveDashboardData, projects]);
+            const filteredProjectFlagTrends =
+                executiveDashboardData.projectFlagTrends.filter((trend) =>
+                    projects.includes(trend.project),
+                ) as ExecutiveSummarySchemaProjectFlagTrendsItem[];
+
+            const filteredImpressionsSummary =
+                executiveDashboardData.metricsSummaryTrends.filter((summary) =>
+                    projects.includes(summary.project),
+                ) as ExecutiveSummarySchemaMetricsSummaryTrendsItem[];
+
+            return {
+                filteredProjectFlagTrends,
+                filteredMetricsSummaryTrends: filteredImpressionsSummary,
+            };
+        }, [executiveDashboardData, projects]);
 
     const {
         gridTemplateColumns,
@@ -159,13 +186,23 @@ export const ExecutiveDashboard: VFC = () => {
                         projectFlagTrends={filteredProjectFlagTrends}
                     />
                 </Widget>
-                <Widget title='Average time to production' order={8}>
+                <Widget
+                    title='Metrics over time per project'
+                    order={8}
+                    span={largeChartSpan}
+                >
+                    <MetricsSummaryChart
+                        metricsSummaryTrends={filteredMetricsSummaryTrends}
+                    />
+                </Widget>
+
+                <Widget title='Average time to production' order={9}>
                     <TimeToProduction
                         //FIXME: data from API
                         daysToProduction={12}
                     />
                 </Widget>
-                <Widget title='Time to production' order={9} span={chartSpan}>
+                <Widget title='Time to production' order={10} span={chartSpan}>
                     <TimeToProductionChart
                         projectFlagTrends={filteredProjectFlagTrends}
                     />

frontend/src/component/executiveDashboard/MetricsSummaryChart/MetricsSummaryChart.tsx

@@ -0,0 +1,17 @@
+import { type VFC } from 'react';
+import 'chartjs-adapter-date-fns';
+import { ExecutiveSummarySchema } from 'openapi';
+import { LineChart } from '../LineChart/LineChart';
+import { useMetricsSummary } from '../useMetricsSummary';
+
+interface IMetricsSummaryChartProps {
+    metricsSummaryTrends: ExecutiveSummarySchema['metricsSummaryTrends'];
+}
+
+export const MetricsSummaryChart: VFC<IMetricsSummaryChartProps> = ({
+    metricsSummaryTrends,
+}) => {
+    const data = useMetricsSummary(metricsSummaryTrends, 'total');
+
+    return <LineChart data={data} />;
+};

frontend/src/component/executiveDashboard/useMetricsSummary.ts

@@ -0,0 +1,58 @@
+import { useMemo } from 'react';
+import { getProjectColor } from './executive-dashboard-utils';
+import { useTheme } from '@mui/material';
+import {
+    ExecutiveSummarySchema,
+    ExecutiveSummarySchemaMetricsSummaryTrendsItem,
+} from '../../openapi';
+
+type MetricsSummaryTrends = ExecutiveSummarySchema['metricsSummaryTrends'];
+
+export const useMetricsSummary = (
+    metricsSummaryTrends: MetricsSummaryTrends,
+    field: 'total' | 'totalYes' | 'totalNo' | 'totalApps',
+) => {
+    const theme = useTheme();
+
+    const data = useMemo(() => {
+        const groupedFlagTrends = metricsSummaryTrends.reduce<
+            Record<string, ExecutiveSummarySchemaMetricsSummaryTrendsItem[]>
+        >((groups, item) => {
+            if (!groups[item.project]) {
+                groups[item.project] = [];
+            }
+            groups[item.project].push(item);
+            return groups;
+        }, {});
+
+        const datasets = Object.entries(groupedFlagTrends).map(
+            ([project, metricsSummaryTrends]) => {
+                const color = getProjectColor(project);
+                return {
+                    label: project,
+                    data: metricsSummaryTrends.map((item) => {
+                        if (field !== 'total') {
+                            return item[field] || 0;
+                        }
+                        return item.totalYes + item.totalNo || 0;
+                    }),
+                    borderColor: color,
+                    backgroundColor: color,
+                    fill: false,
+                };
+            },
+        );
+
+        const objectKeys = Object.keys(groupedFlagTrends);
+
+        const firstElementSummary = groupedFlagTrends[objectKeys[0]] || [];
+        const firstElementsDates = firstElementSummary.map((item) => item.date);
+
+        return {
+            labels: firstElementsDates,
+            datasets,
+        };
+    }, [theme, metricsSummaryTrends]);
+
+    return data;
+};

frontend/src/hooks/api/getters/useExecutiveSummary/useExecutiveSummary.ts

@@ -33,7 +33,7 @@ export const useExecutiveDashboard = (
             userTrends: [],
             flagTrends: [],
             projectFlagTrends: [],
-            impressionsSummary: [],
+            metricsSummaryTrends: [],
         },
         refetchExecutiveDashboard,
         loading: !error && !data,

frontend/src/openapi/models/executiveSummarySchema.ts

@@ -5,7 +5,7 @@
  */
 import type { ExecutiveSummarySchemaFlags } from './executiveSummarySchemaFlags';
 import type { ExecutiveSummarySchemaFlagTrendsItem } from './executiveSummarySchemaFlagTrendsItem';
-import type { ExecutiveSummarySchemaImpressionsSummaryItem } from './executiveSummarySchemaImpressionsSummaryItem';
+import type { ExecutiveSummarySchemaMetricsSummaryTrendsItem } from './executiveSummarySchemaMetricsSummaryTrendsItem';
 import type { ExecutiveSummarySchemaProjectFlagTrendsItem } from './executiveSummarySchemaProjectFlagTrendsItem';
 import type { ExecutiveSummarySchemaUsers } from './executiveSummarySchemaUsers';
 import type { ExecutiveSummarySchemaUserTrendsItem } from './executiveSummarySchemaUserTrendsItem';
@@ -18,8 +18,8 @@ export interface ExecutiveSummarySchema {
     flags: ExecutiveSummarySchemaFlags;
     /** How number of flags changed over time */
     flagTrends: ExecutiveSummarySchemaFlagTrendsItem[];
-    /** How impression data per project changed over time */
-    impressionsSummary: ExecutiveSummarySchemaImpressionsSummaryItem[];
+    /** How metrics data per project changed over time */
+    metricsSummaryTrends: ExecutiveSummarySchemaMetricsSummaryTrendsItem[];
     /** How number of flags per project changed over time */
     projectFlagTrends: ExecutiveSummarySchemaProjectFlagTrendsItem[];
     /** High level user count statistics */

frontend/src/openapi/models/executiveSummarySchemaMetricsSummaryTrendsItem.ts

@@ -4,7 +4,7 @@
  * See `gen:api` script in package.json
  */
 
-export type ExecutiveSummarySchemaImpressionsSummaryItem = {
+export type ExecutiveSummarySchemaMetricsSummaryTrendsItem = {
     /** Date the impressions summary were calculated */
     date: string;
     /** Project id of the project the impressions summary belong to */

frontend/src/openapi/models/index.ts

@@ -512,7 +512,7 @@ export * from './eventsSchemaVersion';
 export * from './executiveSummarySchema';
 export * from './executiveSummarySchemaFlagTrendsItem';
 export * from './executiveSummarySchemaFlags';
-export * from './executiveSummarySchemaImpressionsSummaryItem';
+export * from './executiveSummarySchemaMetricsSummaryTrendsItem';
 export * from './executiveSummarySchemaProjectFlagTrendsItem';
 export * from './executiveSummarySchemaUserTrendsItem';
 export * from './executiveSummarySchemaUsers';