feat: add badges to modified strategies (#2492)

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## About the changes
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* Adds a badge to strategies if the change can be found and the change
is relevant:
<img width="893" alt="Skjermbilde 2022-11-22 kl 11 18 32"
src="https://user-images.githubusercontent.com/16081982/203289081-b59ecaaf-e6cd-4802-b633-9cc118ca405d.png">

* I was considering making this more ergonomic using the slots vs props
pattern, but since this component is used in multiple places I left it
as is for now.

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### Important files
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frontend/src/component/feature/FeatureView/FeatureOverview/FeatureOverviewEnvironments/FeatureOverviewEnvironment/EnvironmentAccordionBody/StrategyDraggableItem/StrategyDraggableItem.tsx

@@ -1,10 +1,14 @@
 import { DragEventHandler, RefObject, useRef } from 'react';
-import { Box } from '@mui/material';
+import { Box, useMediaQuery, useTheme } from '@mui/material';
 import { ConditionallyRender } from 'component/common/ConditionallyRender/ConditionallyRender';
 import { StrategySeparator } from 'component/common/StrategySeparator/StrategySeparator';
 import { IFeatureEnvironment } from 'interfaces/featureToggle';
 import { IFeatureStrategy } from 'interfaces/strategy';
 import { StrategyItem } from './StrategyItem/StrategyItem';
+import { useRequiredPathParam } from 'hooks/useRequiredPathParam';
+import { Badge } from 'component/common/Badge/Badge';
+import { IChangeRequestEvent } from 'component/changeRequest/changeRequest.types';
+import { useStrategyChangeFromRequest } from './StrategyItem/useStrategyChangeFromRequest';
 
 interface IStrategyDraggableItemProps {
     strategy: IFeatureStrategy;
@@ -32,7 +36,15 @@ export const StrategyDraggableItem = ({
     onDragOver,
     onDragEnd,
 }: IStrategyDraggableItemProps) => {
+    const projectId = useRequiredPathParam('projectId');
+    const featureId = useRequiredPathParam('featureId');
     const ref = useRef<HTMLDivElement>(null);
+    const change = useStrategyChangeFromRequest(
+        projectId,
+        featureId,
+        environmentName,
+        strategy.id
+    );
 
     return (
         <Box
@@ -53,7 +65,34 @@ export const StrategyDraggableItem = ({
                 onDragStart={onDragStartRef(ref, index)}
                 onDragEnd={onDragEnd}
                 orderNumber={index + 1}
+                headerChildren={<ChangeRequestStatusBadge change={change} />}
             />
         </Box>
     );
 };
+
+const ChangeRequestStatusBadge = ({
+    change,
+}: {
+    change: IChangeRequestEvent | undefined;
+}) => {
+    const theme = useTheme();
+    const isSmallScreen = useMediaQuery(theme.breakpoints.down('sm'));
+
+    if (isSmallScreen) {
+        return null;
+    }
+
+    return (
+        <>
+            <ConditionallyRender
+                condition={change?.action === 'updateStrategy'}
+                show={<Badge color="warning">Modified in draft</Badge>}
+            />
+            <ConditionallyRender
+                condition={change?.action === 'deleteStrategy'}
+                show={<Badge color="error">Deleted in draft</Badge>}
+            />
+        </>
+    );
+};

frontend/src/component/feature/FeatureView/FeatureOverview/FeatureOverviewEnvironments/FeatureOverviewEnvironment/EnvironmentAccordionBody/StrategyDraggableItem/StrategyItem/StrategyItem.tsx

@@ -1,4 +1,4 @@
-import { DragEventHandler, VFC } from 'react';
+import { DragEventHandler, FC } from 'react';
 import { Edit } from '@mui/icons-material';
 import { Link } from 'react-router-dom';
 import { IFeatureEnvironment } from 'interfaces/featureToggle';
@@ -20,15 +20,17 @@ interface IStrategyItemProps {
     onDragEnd?: DragEventHandler<HTMLButtonElement>;
     otherEnvironments?: IFeatureEnvironment['name'][];
     orderNumber?: number;
+    headerChildren?: JSX.Element[] | JSX.Element;
 }
 
-export const StrategyItem: VFC<IStrategyItemProps> = ({
+export const StrategyItem: FC<IStrategyItemProps> = ({
     environmentId,
     strategy,
     onDragStart,
     onDragEnd,
     otherEnvironments,
     orderNumber,
+    headerChildren,
 }) => {
     const projectId = useRequiredPathParam('projectId');
     const featureId = useRequiredPathParam('featureId');
@@ -48,6 +50,7 @@ export const StrategyItem: VFC<IStrategyItemProps> = ({
             orderNumber={orderNumber}
             actions={
                 <>
+                    {headerChildren}
                     <ConditionallyRender
                         condition={Boolean(
                             otherEnvironments && otherEnvironments?.length > 0

frontend/src/component/feature/FeatureView/FeatureOverview/FeatureOverviewEnvironments/FeatureOverviewEnvironment/EnvironmentAccordionBody/StrategyDraggableItem/StrategyItem/useStrategyChangeFromRequest.tsx

@@ -0,0 +1,27 @@
+import { useChangeRequestOpen } from 'hooks/api/getters/useChangeRequestOpen/useChangeRequestOpen';
+
+export const useStrategyChangeFromRequest = (
+    projectId: string,
+    featureId: string,
+    environment: string,
+    strategyId: string
+) => {
+    const { draft } = useChangeRequestOpen(projectId);
+
+    const environmentDraft = draft?.find(
+        draft => draft.environment === environment
+    );
+    const feature = environmentDraft?.features.find(
+        feature => feature.name === featureId
+    );
+    const change = feature?.changes.find(change => {
+        if (
+            change.action === 'updateStrategy' ||
+            change.action === 'deleteStrategy'
+        ) {
+            return change.payload.id === strategyId;
+        }
+    });
+
+    return change;
+};