chore: track metrics for how many CRs are moved into next state with conflicts (#6109)

Use React's context to track how many CRs are moved into their next
state with conflicts present.

This PR wraps environment change requests and change request overviews
in a change request plausible context that contains a
`willOverwriteStrategyChanges` property. This property is updated by the
diff calculation if there are any conflicts and then read by the
`changeState` function in the `useChangeRequestApi` hook.

As long as at least one of the strategies in the CR contain conflicts,
it will be marked as overwriting changes.

frontend/src/component/changeRequest/ChangeRequest/Changes/Change/StrategyChangeOverwriteWarning.tsx

@@ -1,8 +1,10 @@
 import { Box, styled } from '@mui/material';
 import { IChangeRequestUpdateStrategy } from 'component/changeRequest/changeRequest.types';
+import { useChangeRequestPlausibleContext } from 'component/changeRequest/ChangeRequestContext';
 import { useUiFlag } from 'hooks/useUiFlag';
 import { IFeatureStrategy } from 'interfaces/strategy';
 import { getChangesThatWouldBeOverwritten } from './strategy-change-diff-calculation';
+import { useEffect } from 'react';
 
 const ChangesToOverwriteWarning = styled(Box)(({ theme }) => ({
     color: theme.palette.warning.dark,
@@ -76,6 +78,14 @@ export const ChangesToOverwrite: React.FC<{
     const changesThatWouldBeOverwritten = checkForChanges
         ? getChangesThatWouldBeOverwritten(currentStrategy, change)
         : null;
+    const { registerWillOverwriteStrategyChanges } =
+        useChangeRequestPlausibleContext();
+
+    useEffect(() => {
+        if (changesThatWouldBeOverwritten) {
+            registerWillOverwriteStrategyChanges();
+        }
+    }, [changesThatWouldBeOverwritten]);
 
     if (!changesThatWouldBeOverwritten) {
         return null;

frontend/src/component/changeRequest/ChangeRequestContext.tsx

@@ -0,0 +1,15 @@
+import { createContext, useContext } from 'react';
+
+const defaultContext = {
+    willOverwriteStrategyChanges: false,
+    registerWillOverwriteStrategyChanges: () => {},
+};
+
+const ChangeRequestPlausibleContext = createContext(defaultContext);
+
+export const ChangeRequestPlausibleProvider =
+    ChangeRequestPlausibleContext.Provider;
+
+export const useChangeRequestPlausibleContext = (): typeof defaultContext => {
+    return useContext(ChangeRequestPlausibleContext);
+};

frontend/src/component/changeRequest/ChangeRequestSidebar/ChangeRequestSidebar.tsx

@@ -1,4 +1,4 @@
-import { VFC } from 'react';
+import { useState, VFC } from 'react';
 import { Box, Button, styled, Typography } from '@mui/material';
 import { DynamicSidebarModal } from 'component/common/SidebarModal/SidebarModal';
 import { PageContent } from 'component/common/PageContent/PageContent';
@@ -11,6 +11,7 @@ import useToast from 'hooks/useToast';
 import { formatUnknownError } from 'utils/formatUnknownError';
 import { EnvironmentChangeRequest } from './EnvironmentChangeRequest/EnvironmentChangeRequest';
 import { ReviewChangesHeader } from './ReviewChangesHeader/ReviewChangesHeader';
+import { ChangeRequestPlausibleProvider } from '../ChangeRequestContext';
 
 interface IChangeRequestSidebarProps {
     open: boolean;
@@ -76,15 +77,18 @@ export const ChangeRequestSidebar: VFC<IChangeRequestSidebarProps> = ({
         loading,
         refetch: refetchChangeRequest,
     } = usePendingChangeRequests(project);
-    const { changeState, discardDraft } = useChangeRequestApi();
+    const { discardDraft } = useChangeRequestApi();
     const { setToastApiError } = useToast();
+    const [
+        changeRequestChangesWillOverwrite,
+        setChangeRequestChangesWillOverwrite,
+    ] = useState(false);
 
-    const onReview = async (draftId: number, comment?: string) => {
+    const onReview = async (
+        changeState: (project: string) => Promise<void>,
+    ) => {
         try {
-            await changeState(project, draftId, 'Draft', {
-                state: 'In review',
-                comment,
-            });
+            await changeState(project);
             refetchChangeRequest();
         } catch (error: unknown) {
             setToastApiError(formatUnknownError(error));
@@ -130,19 +134,29 @@ export const ChangeRequestSidebar: VFC<IChangeRequestSidebarProps> = ({
                 header={<ReviewChangesHeader />}
             >
                 {data?.map((environmentChangeRequest) => (
-                    <EnvironmentChangeRequest
+                    <ChangeRequestPlausibleProvider
                         key={environmentChangeRequest.id}
-                        environmentChangeRequest={environmentChangeRequest}
-                        onClose={onClose}
-                        onReview={onReview}
-                        onDiscard={onDiscard}
+                        value={{
+                            willOverwriteStrategyChanges:
+                                changeRequestChangesWillOverwrite,
+                            registerWillOverwriteStrategyChanges: () =>
+                                setChangeRequestChangesWillOverwrite(true),
+                        }}
                     >
-                        <ChangeRequest
-                            changeRequest={environmentChangeRequest}
-                            onNavigate={onClose}
-                            onRefetch={refetchChangeRequest}
-                        />
-                    </EnvironmentChangeRequest>
+                        <EnvironmentChangeRequest
+                            key={environmentChangeRequest.id}
+                            environmentChangeRequest={environmentChangeRequest}
+                            onClose={onClose}
+                            onReview={onReview}
+                            onDiscard={onDiscard}
+                        >
+                            <ChangeRequest
+                                changeRequest={environmentChangeRequest}
+                                onNavigate={onClose}
+                                onRefetch={refetchChangeRequest}
+                            />
+                        </EnvironmentChangeRequest>
+                    </ChangeRequestPlausibleProvider>
                 ))}
             </StyledPageContent>
         </DynamicSidebarModal>

frontend/src/component/changeRequest/ChangeRequestSidebar/EnvironmentChangeRequest/EnvironmentChangeRequest.tsx

@@ -23,6 +23,7 @@ import { useAuthUser } from 'hooks/api/getters/useAuth/useAuthUser';
 import Input from 'component/common/Input/Input';
 import { ChangeRequestTitle } from './ChangeRequestTitle';
 import { UpdateCount } from 'component/changeRequest/UpdateCount';
+import { useChangeRequestApi } from 'hooks/api/actions/useChangeRequestApi/useChangeRequestApi';
 
 const SubmitChangeRequestButton: FC<{ onClick: () => void; count: number }> = ({
     onClick,
@@ -56,7 +57,7 @@ const ChangeRequestContent = styled(Box)(({ theme }) => ({
 export const EnvironmentChangeRequest: FC<{
     environmentChangeRequest: ChangeRequestType;
     onClose: () => void;
-    onReview: (id: number, comment?: string) => void;
+    onReview: (changeState: (project: string) => Promise<void>) => void;
     onDiscard: (id: number) => void;
 }> = ({ environmentChangeRequest, onClose, onReview, onDiscard, children }) => {
     const theme = useTheme();
@@ -64,6 +65,12 @@ export const EnvironmentChangeRequest: FC<{
     const [commentText, setCommentText] = useState('');
     const { user } = useAuthUser();
     const [title, setTitle] = useState(environmentChangeRequest.title);
+    const { changeState } = useChangeRequestApi();
+    const sendToReview = async (project: string) =>
+        changeState(project, environmentChangeRequest.id, 'Draft', {
+            state: 'In review',
+            comment: commentText,
+        });
 
     return (
         <Box key={environmentChangeRequest.id}>
@@ -141,12 +148,7 @@ export const EnvironmentChangeRequest: FC<{
                         show={
                             <>
                                 <SubmitChangeRequestButton
-                                    onClick={() =>
-                                        onReview(
-                                            environmentChangeRequest.id,
-                                            commentText,
-                                        )
-                                    }
+                                    onClick={() => onReview(sendToReview)}
                                     count={changesCount(
                                         environmentChangeRequest,
                                     )}

frontend/src/component/project/Project/Project.tsx

@@ -41,6 +41,7 @@ import { Badge } from 'component/common/Badge/Badge';
 import { ProjectDoraMetrics } from './ProjectDoraMetrics/ProjectDoraMetrics';
 import { UiFlags } from 'interfaces/uiConfig';
 import { HiddenProjectIconWithTooltip } from './HiddenProjectIconWithTooltip/HiddenProjectIconWithTooltip';
+import { ChangeRequestPlausibleProvider } from 'component/changeRequest/ChangeRequestContext';
 
 const StyledBadge = styled(Badge)(({ theme }) => ({
     position: 'absolute',
@@ -76,6 +77,11 @@ export const Project = () => {
 
     const [showDelDialog, setShowDelDialog] = useState(false);
 
+    const [
+        changeRequestChangesWillOverwrite,
+        setChangeRequestChangesWillOverwrite,
+    ] = useState(false);
+
     const tabs: ITab[] = [
         {
             title: 'Overview',
@@ -293,7 +299,18 @@ export const Project = () => {
                 />
                 <Route
                     path='change-requests/:id'
-                    element={<ChangeRequestOverview />}
+                    element={
+                        <ChangeRequestPlausibleProvider
+                            value={{
+                                willOverwriteStrategyChanges:
+                                    changeRequestChangesWillOverwrite,
+                                registerWillOverwriteStrategyChanges: () =>
+                                    setChangeRequestChangesWillOverwrite(true),
+                            }}
+                        >
+                            <ChangeRequestOverview />
+                        </ChangeRequestPlausibleProvider>
+                    }
                 />
                 <Route path='settings/*' element={<ProjectSettings />} />
                 <Route path='metrics' element={<ProjectDoraMetrics />} />

frontend/src/hooks/api/actions/useChangeRequestApi/useChangeRequestApi.ts

@@ -3,6 +3,7 @@ import { usePlausibleTracker } from '../../../usePlausibleTracker';
 import { PlausibleChangeRequestState } from 'component/changeRequest/changeRequest.types';
 import { getUniqueChangeRequestId } from 'utils/unique-change-request-id';
 import useUiConfig from 'hooks/api/getters/useUiConfig/useUiConfig';
+import { useChangeRequestPlausibleContext } from 'component/changeRequest/ChangeRequestContext';
 
 export interface IChangeSchema {
     feature: string | null;
@@ -33,6 +34,7 @@ export const useChangeRequestApi = () => {
         propagateErrors: true,
     });
     const { uiConfig } = useUiConfig();
+    const { willOverwriteStrategyChanges } = useChangeRequestPlausibleContext();
 
     const addChange = async (
         project: string,
@@ -75,6 +77,7 @@ export const useChangeRequestApi = () => {
             props: {
                 eventType: payload.state,
                 previousState,
+                willOverwriteStrategyChanges,
                 id: getUniqueChangeRequestId(uiConfig, changeRequestId),
             },
         });