fix: avoid constraint accordion close on focus (#907)

* fix: avoid constraint accordion close on focus

* refactor: fix mutate cache key mismatch

frontend/src/component/feature/FeatureStrategy/FeatureStrategyCreate/FeatureStrategyCreate.tsx

@@ -1,7 +1,6 @@
 import React, { useEffect, useState } from 'react';
 import { useRequiredPathParam } from 'hooks/useRequiredPathParam';
 import { useRequiredQueryParam } from 'hooks/useRequiredQueryParam';
-import { useFeature } from 'hooks/api/getters/useFeature/useFeature';
 import { FeatureStrategyForm } from 'component/feature/FeatureStrategy/FeatureStrategyForm/FeatureStrategyForm';
 import FormTemplate from 'component/common/FormTemplate/FormTemplate';
 import useUiConfig from 'hooks/api/getters/useUiConfig/useUiConfig';
@@ -23,6 +22,7 @@ import { CREATE_FEATURE_STRATEGY } from 'component/providers/AccessProvider/perm
 import { ISegment } from 'interfaces/segment';
 import { useSegmentsApi } from 'hooks/api/actions/useSegmentsApi/useSegmentsApi';
 import { formatStrategyName } from 'utils/strategyNames';
+import { useFeatureImmutable } from 'hooks/api/getters/useFeature/useFeatureImmutable';
 
 export const FeatureStrategyCreate = () => {
     const projectId = useRequiredPathParam('projectId');
@@ -35,12 +35,16 @@ export const FeatureStrategyCreate = () => {
 
     const { addStrategyToFeature, loading } = useFeatureStrategyApi();
     const { setStrategySegments } = useSegmentsApi();
-    const { feature, refetchFeature } = useFeature(projectId, featureId);
     const { setToastData, setToastApiError } = useToast();
     const { uiConfig } = useUiConfig();
     const { unleashUrl } = uiConfig;
     const { push } = useHistory();
 
+    const { feature, refetchFeature } = useFeatureImmutable(
+        projectId,
+        featureId
+    );
+
     useEffect(() => {
         // Fill in the default values once the strategies have been fetched.
         setStrategy(getStrategyObject(strategies, strategyName, featureId));

frontend/src/component/feature/FeatureStrategy/FeatureStrategyEdit/FeatureStrategyEdit.tsx

@@ -1,5 +1,4 @@
 import React, { useEffect, useState } from 'react';
-import { useFeature } from 'hooks/api/getters/useFeature/useFeature';
 import { FeatureStrategyForm } from 'component/feature/FeatureStrategy/FeatureStrategyForm/FeatureStrategyForm';
 import FormTemplate from 'component/common/FormTemplate/FormTemplate';
 import useUiConfig from 'hooks/api/getters/useUiConfig/useUiConfig';
@@ -15,6 +14,7 @@ import { ISegment } from 'interfaces/segment';
 import { useSegmentsApi } from 'hooks/api/actions/useSegmentsApi/useSegmentsApi';
 import { useSegments } from 'hooks/api/getters/useSegments/useSegments';
 import { formatStrategyName } from 'utils/strategyNames';
+import { useFeatureImmutable } from 'hooks/api/getters/useFeature/useFeatureImmutable';
 
 export const FeatureStrategyEdit = () => {
     const projectId = useRequiredPathParam('projectId');
@@ -25,13 +25,17 @@ export const FeatureStrategyEdit = () => {
     const [strategy, setStrategy] = useState<Partial<IFeatureStrategy>>({});
     const [segments, setSegments] = useState<ISegment[]>([]);
     const { updateStrategyOnFeature, loading } = useFeatureStrategyApi();
-    const { feature, refetchFeature } = useFeature(projectId, featureId);
     const { setStrategySegments } = useSegmentsApi();
     const { setToastData, setToastApiError } = useToast();
     const { uiConfig } = useUiConfig();
     const { unleashUrl } = uiConfig;
     const { push } = useHistory();
 
+    const { feature, refetchFeature } = useFeatureImmutable(
+        projectId,
+        featureId
+    );
+
     const {
         segments: savedStrategySegments,
         refetchSegments: refetchSavedStrategySegments,

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

@@ -1,11 +1,11 @@
-import useSWR, { mutate, SWRConfiguration } from 'swr';
+import useSWR, { SWRConfiguration } from 'swr';
 import { useCallback } from 'react';
 import { emptyFeature } from './emptyFeature';
 import handleErrorResponses from '../httpErrorResponseHandler';
 import { formatApiPath } from 'utils/formatPath';
 import { IFeatureToggle } from 'interfaces/featureToggle';
 
-interface IUseFeatureOutput {
+export interface IUseFeatureOutput {
     feature: IFeatureToggle;
     refetchFeature: () => void;
     loading: boolean;
@@ -13,7 +13,7 @@ interface IUseFeatureOutput {
     error?: Error;
 }
 
-interface IFeatureResponse {
+export interface IFeatureResponse {
     status: number;
     body?: IFeatureToggle;
 }
@@ -23,19 +23,17 @@ export const useFeature = (
     featureId: string,
     options?: SWRConfiguration
 ): IUseFeatureOutput => {
-    const path = formatApiPath(
-        `api/admin/projects/${projectId}/features/${featureId}`
-    );
+    const path = formatFeatureApiPath(projectId, featureId);
 
-    const { data, error } = useSWR<IFeatureResponse>(
-        path,
-        () => fetcher(path),
+    const { data, error, mutate } = useSWR<IFeatureResponse>(
+        ['useFeature', path],
+        () => featureFetcher(path),
         options
     );
 
     const refetchFeature = useCallback(() => {
-        mutate(path).catch(console.warn);
-    }, [path]);
+        mutate().catch(console.warn);
+    }, [mutate]);
 
     return {
         feature: data?.body || emptyFeature,
@@ -46,7 +44,9 @@ export const useFeature = (
     };
 };
 
-const fetcher = async (path: string): Promise<IFeatureResponse> => {
+export const featureFetcher = async (
+    path: string
+): Promise<IFeatureResponse> => {
     const res = await fetch(path);
 
     if (res.status === 404) {
@@ -62,3 +62,12 @@ const fetcher = async (path: string): Promise<IFeatureResponse> => {
         body: await res.json(),
     };
 };
+
+export const formatFeatureApiPath = (
+    projectId: string,
+    featureId: string
+): string => {
+    return formatApiPath(
+        `api/admin/projects/${projectId}/features/${featureId}`
+    );
+};

frontend/src/hooks/api/getters/useFeature/useFeatureImmutable.ts

@@ -0,0 +1,36 @@
+import useSWRImmutable from 'swr/immutable';
+import { useCallback } from 'react';
+import { emptyFeature } from './emptyFeature';
+import {
+    IUseFeatureOutput,
+    IFeatureResponse,
+    featureFetcher,
+    formatFeatureApiPath,
+} from 'hooks/api/getters/useFeature/useFeature';
+
+// useFeatureImmutable is like useFeature, except it won't refetch data on
+// focus/reconnect/remount. Useful for <form>s that need a stable copy of
+// the data. In particular, the lastSeenAt field may often change.
+export const useFeatureImmutable = (
+    projectId: string,
+    featureId: string
+): IUseFeatureOutput => {
+    const path = formatFeatureApiPath(projectId, featureId);
+
+    const { data, error, mutate } = useSWRImmutable<IFeatureResponse>(
+        ['useFeatureImmutable', path],
+        () => featureFetcher(path)
+    );
+
+    const refetchFeature = useCallback(() => {
+        mutate().catch(console.warn);
+    }, [mutate]);
+
+    return {
+        feature: data?.body || emptyFeature,
+        refetchFeature,
+        loading: !error && !data,
+        status: data?.status,
+        error,
+    };
+};

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

@@ -1,4 +1,4 @@
-import useSWR, { mutate, SWRConfiguration } from 'swr';
+import useSWR, { SWRConfiguration } from 'swr';
 import { useCallback } from 'react';
 import { formatApiPath } from 'utils/formatPath';
 import handleErrorResponses from '../httpErrorResponseHandler';
@@ -17,15 +17,15 @@ export const useFeatureEvents = (
     featureName: string,
     options?: SWRConfiguration
 ): IUseEventsOutput => {
-    const { data, error } = useSWR<{ events: IEvent[] }>(
+    const { data, error, mutate } = useSWR<{ events: IEvent[] }>(
         [PATH, featureName],
         () => fetchFeatureEvents(featureName),
         options
     );
 
     const refetchEvents = useCallback(() => {
-        mutate(PATH).catch(console.warn);
-    }, []);
+        mutate().catch(console.warn);
+    }, [mutate]);
 
     return {
         events: data?.events || [],