fix: chart info naming bug fix (#6660)

Rename param

Signed-off-by: andreas-unleash <andreas@getunleash.ai>

frontend/src/component/executiveDashboard/Charts.tsx

@@ -41,7 +41,7 @@ interface IChartsProps {
         averageHealth?: string;
         flagsPerUser?: string;
     };
-    avgDaysToProduction: number;
+    medianTimeToProduction: number;
     loading: boolean;
     projects: string[];
 }
@@ -71,7 +71,7 @@ export const Charts: VFC<IChartsProps> = ({
     userTrends,
     groupedProjectsData,
     flagTrends,
-    avgDaysToProduction,
+    medianTimeToProduction,
     groupedMetricsData,
     environmentTypeTrends,
     loading,
@@ -165,8 +165,10 @@ export const Charts: VFC<IChartsProps> = ({
                         isAggregate={showAllProjects}
                     />
                 </ChartWidget>
-                <Widget {...chartInfo.averageTimeToProduction}>
-                    <TimeToProduction daysToProduction={avgDaysToProduction} />
+                <Widget {...chartInfo.medianTimeToProduction}>
+                    <TimeToProduction
+                        daysToProduction={medianTimeToProduction}
+                    />
                 </Widget>
                 <ChartWidget
                     {...(showAllProjects

frontend/src/component/executiveDashboard/chart-info.ts

@@ -50,7 +50,7 @@ export const chartInfo = {
         tooltip:
             'How the overall health changes over time for the selected projects.',
     },
-    averageTimeToProduction: {
+    medianTimeToProduction: {
         title: 'Median time to production',
         tooltip:
             'How long does it currently take on average from when a feature flag was created until it was enabled in a "production" type environment. This is calculated only from feature flags of the type "release" and is the median across the selected projects.',
@@ -63,7 +63,7 @@ export const chartInfo = {
     timeToProductionPerProject: {
         title: 'Time to production per project',
         tooltip:
-            'How the median time to production changes over time for the selected projects.',
+            'How the average time to production changes over time for the selected projects.',
     },
     metrics: {
         title: 'Flag evaluation metrics',

frontend/src/component/executiveDashboard/hooks/useDashboardData.ts

@@ -3,7 +3,7 @@ import type { ExecutiveSummarySchema } from 'openapi';
 import { useFilteredTrends } from './useFilteredTrends';
 import { useGroupedProjectTrends } from './useGroupedProjectTrends';
 import { useFilteredFlagsSummary } from './useFilteredFlagsSummary';
-import { useAvgTimeToProduction } from './useAvgTimeToProduction';
+import { useMedianTimeToProduction } from './useMedianTimeToProduction';
 
 export const useDashboardData = (
     executiveDashboardData: ExecutiveSummarySchema,
@@ -27,7 +27,8 @@ export const useDashboardData = (
         executiveDashboardData.users,
     );
 
-    const avgDaysToProduction = useAvgTimeToProduction(groupedProjectsData);
+    const medianTimeToProduction =
+        useMedianTimeToProduction(groupedProjectsData);
 
     return useMemo(
         () => ({
@@ -39,7 +40,7 @@ export const useDashboardData = (
             users: executiveDashboardData.users,
             environmentTypeTrends: executiveDashboardData.environmentTypeTrends,
             summary,
-            avgDaysToProduction,
+            medianTimeToProduction,
         }),
         [
             executiveDashboardData,
@@ -49,7 +50,7 @@ export const useDashboardData = (
             metricsData,
             groupedMetricsData,
             summary,
-            avgDaysToProduction,
+            medianTimeToProduction,
         ],
     );
 };

frontend/src/component/executiveDashboard/hooks/useMedianTimeToProduction.test.ts

@@ -0,0 +1,63 @@
+import { useMedianTimeToProduction } from './useMedianTimeToProduction';
+import { renderHook } from '@testing-library/react-hooks';
+
+describe('useMedianTimeToProduction', () => {
+    test('returns 0 when projectsData is empty', () => {
+        const projectsData = {};
+        const { result } = renderHook(() =>
+            useMedianTimeToProduction(projectsData),
+        );
+        expect(result.current).toBe(0);
+    });
+
+    test('calculates median time to production correctly with even number of projects', () => {
+        const projectsData = {
+            project1: [
+                { timeToProduction: 10, date: '2023-01-01' },
+                { timeToProduction: 20, date: '2023-02-01' },
+            ],
+            project2: [
+                { timeToProduction: 15, date: '2023-01-15' },
+                { timeToProduction: 25, date: '2023-02-15' },
+            ],
+            project3: [{ timeToProduction: 30, date: '2023-01-20' }],
+        } as any;
+        const { result } = renderHook(() =>
+            useMedianTimeToProduction(projectsData),
+        );
+        // With sorted timeToProductions [10, 15, 20, 25, 30], median is the middle value, 20.
+        expect(result.current).toBe(20);
+    });
+
+    test('calculates median time to production correctly with odd number of projects', () => {
+        const projectsData = {
+            project1: [
+                { timeToProduction: 10, date: '2023-01-01' },
+                { timeToProduction: 20, date: '2023-02-01' },
+            ],
+            project2: [{ timeToProduction: 15, date: '2023-01-15' }],
+        } as any;
+        const { result } = renderHook(() =>
+            useMedianTimeToProduction(projectsData),
+        );
+        // With sorted timeToProductions [10, 15, 20], median is the middle value, 15.
+        expect(result.current).toBe(15);
+    });
+
+    test('correctly handles all valid time to production values', () => {
+        const projectsData = {
+            project1: [{ timeToProduction: 10, date: '2023-01-01' }],
+            project2: [{ timeToProduction: 25, date: '2023-01-10' }],
+            project3: [{ date: '2023-01-15' }],
+            project4: [
+                { timeToProduction: 30, date: '2023-02-01' },
+                { timeToProduction: 20, date: '2023-02-02' },
+            ],
+        } as any;
+        const { result } = renderHook(() =>
+            useMedianTimeToProduction(projectsData),
+        );
+        // With sorted timeToProductions [10, 20, 25, 30], the median is the average of 20 and 25, i.e., 22.5.
+        expect(result.current).toBe(22.5);
+    });
+});

frontend/src/component/executiveDashboard/hooks/useMedianTimeToProduction.ts

@@ -0,0 +1,43 @@
+import { useMemo } from 'react';
+import type {
+    ExecutiveSummarySchema,
+    ExecutiveSummarySchemaProjectFlagTrendsItem,
+} from 'openapi';
+import type { GroupedDataByProject } from './useGroupedProjectTrends';
+
+const validTrend = (trend: ExecutiveSummarySchemaProjectFlagTrendsItem) =>
+    Boolean(trend) && Boolean(trend.timeToProduction);
+
+export const useMedianTimeToProduction = (
+    projectsData: GroupedDataByProject<
+        ExecutiveSummarySchema['projectFlagTrends']
+    >,
+) =>
+    useMemo(() => {
+        const timesToProduction: number[] = [];
+
+        Object.values(projectsData).forEach((trends) => {
+            trends.forEach((trend) => {
+                if (validTrend(trend)) {
+                    timesToProduction.push(trend.timeToProduction!);
+                }
+            });
+        });
+
+        if (timesToProduction.length === 0) {
+            return 0;
+        }
+
+        timesToProduction.sort((a, b) => a - b);
+
+        const midIndex = Math.floor(timesToProduction.length / 2);
+
+        const median =
+            timesToProduction.length % 2 === 0
+                ? (timesToProduction[midIndex - 1] +
+                      timesToProduction[midIndex]) /
+                  2
+                : timesToProduction[midIndex];
+
+        return median;
+    }, [projectsData]);