added recently used realms to the top (#502)

* added recently used realms to the top

fixing: #396

* fixed add realm button

* moved setting recent to setRealm
cleanup to where realm list is updated

src/App.tsx

@@ -23,6 +23,7 @@ import { SubGroups } from "./groups/SubGroupsContext";
 import { useRealm } from "./context/realm-context/RealmContext";
 import { useAdminClient, asyncStateFetch } from "./context/auth/AdminClient";
 import { ErrorRenderer } from "./components/error/ErrorRenderer";
+import { RecentUsed } from "./components/realm-selector/recent-used";
 
 export const mainPageContentId = "kc-main-content-page-container";
 
@@ -44,11 +45,14 @@ const RealmPathSelector = ({ children }: { children: ReactNode }) => {
   const { realm } = useParams<{ realm: string }>();
   const adminClient = useAdminClient();
   const handleError = useErrorHandler();
+  const recentUsed = new RecentUsed();
+
   useEffect(
     () =>
       asyncStateFetch(
         () => adminClient.realms.find(),
         (realms) => {
+          recentUsed.clean(realms.map((r) => r.realm!));
           if (realms.findIndex((r) => r.realm == realm) !== -1) {
             setRealm(realm);
           }

src/PageNav.tsx

@@ -1,6 +1,7 @@
 import React from "react";
 import { useHistory, useLocation } from "react-router-dom";
 import { useTranslation } from "react-i18next";
+import _ from "lodash";
 import {
   Nav,
   NavItem,
@@ -8,6 +9,7 @@ import {
   NavList,
   PageSidebar,
 } from "@patternfly/react-core";
+
 import { RealmSelector } from "./components/realm-selector/RealmSelector";
 import { useRealm } from "./context/realm-context/RealmContext";
 import { DataLoader } from "./components/data-loader/DataLoader";
@@ -21,7 +23,7 @@ export const PageNav: React.FunctionComponent = () => {
   const { realm } = useRealm();
   const adminClient = useAdminClient();
   const realmLoader = async () => {
-    return await adminClient.realms.find();
+    return _.sortBy(await adminClient.realms.find(), "realm");
   };
 
   const history = useHistory();

src/common-messages.json

@@ -84,6 +84,7 @@
     "maxLength": "Max length {{length}}",
 
     "createRealm": "Create Realm",
+    "recent": "Recent",
 
     "jumpToSection": "Jump to section",
 

src/components/realm-selector/RealmSelector.tsx

@@ -12,6 +12,7 @@ import {
   Split,
   ContextSelector,
   ContextSelectorItem,
+  Label,
 } from "@patternfly/react-core";
 import { CheckIcon } from "@patternfly/react-icons";
 
@@ -19,6 +20,7 @@ import { toUpperCase } from "../../util";
 import RealmRepresentation from "keycloak-admin/lib/defs/realmRepresentation";
 import { useRealm } from "../../context/realm-context/RealmContext";
 import { WhoAmIContext } from "../../context/whoami/WhoAmI";
+import { RecentUsed } from "./recent-used";
 
 import "./realm-selector.css";
 
@@ -34,6 +36,8 @@ export const RealmSelector = ({ realmList }: RealmSelectorProps) => {
   const [filteredItems, setFilteredItems] = useState(realmList);
   const history = useHistory();
   const { t } = useTranslation("common");
+  const recentUsed = new RecentUsed();
+
   const RealmText = ({ value }: { value: string }) => (
     <Split className="keycloak__realm_selector__list-item-split">
       <SplitItem isFilled>{toUpperCase(value)}</SplitItem>
@@ -41,7 +45,7 @@ export const RealmSelector = ({ realmList }: RealmSelectorProps) => {
     </Split>
   );
 
-  const AddRealm = ({ className }: { className?: string }) => (
+  const AddRealm = () => (
     <Button
       component="div"
       isBlock
@@ -49,7 +53,6 @@ export const RealmSelector = ({ realmList }: RealmSelectorProps) => {
         history.push(`/${realm}/add-realm`);
         setOpen(!open);
       }}
-      className={className}
     >
       {t("createRealm")}
     </Button>
@@ -65,6 +68,11 @@ export const RealmSelector = ({ realmList }: RealmSelectorProps) => {
     setFilteredItems(filtered || []);
   };
 
+  const selectRealm = (realm: string) => {
+    setRealm(realm);
+    setOpen(!open);
+  };
+
   useEffect(() => {
     onFilter();
   }, [search]);
@@ -73,9 +81,8 @@ export const RealmSelector = ({ realmList }: RealmSelectorProps) => {
     <DropdownItem
       key={`realm-dropdown-item-${r.realm}`}
       onClick={() => {
-        setRealm(r.realm!);
-        history.push(`/${r.realm}/`);
-        setOpen(!open);
+        selectRealm(r.realm!);
+        history.push(`/${realm}/`);
       }}
     >
       <RealmText value={r.realm!} />
@@ -104,16 +111,28 @@ export const RealmSelector = ({ realmList }: RealmSelectorProps) => {
           screenReaderLabel={toUpperCase(realm)}
           onToggle={() => setOpen(!open)}
           onSelect={(_, r) => {
-            const value = (r as ReactElement).props.value;
-            setRealm(value || "master");
-            setOpen(!open);
+            let element: ReactElement;
+            if (Array.isArray(r)) {
+              element = (r as ReactElement[])[0];
+            } else {
+              element = r as ReactElement;
+            }
+            const value = element.props.value || "master";
+            selectRealm(value);
           }}
           searchInputValue={search}
           onSearchInputChange={(value) => setSearch(value)}
           onSearchButtonClick={() => onFilter()}
           className="keycloak__realm_selector__context_selector"
         >
-          {filteredItems.map((item) => (
+          {recentUsed.used.map((realm) => (
+            <ContextSelectorItem key={realm}>
+              <RealmText value={realm} /> <Label>{t("recent")}</Label>
+            </ContextSelectorItem>
+          ))}
+          {filteredItems
+            .filter((r) => !recentUsed.used.includes(r.realm!))
+            .map((item) => (
               <ContextSelectorItem key={item.id}>
                 <RealmText value={item.realm!} />
               </ContextSelectorItem>

src/components/realm-selector/recent-used.ts

@@ -0,0 +1,32 @@
+export class RecentUsed {
+  private readonly MAX_NUM = 3;
+  private readonly KEY = "recent-used-realms";
+  private recentUsedRealms: string[];
+
+  constructor() {
+    this.recentUsedRealms = JSON.parse(localStorage.getItem(this.KEY) || "[]");
+  }
+
+  private save() {
+    this.recentUsedRealms = this.recentUsedRealms.slice(0, this.MAX_NUM);
+    localStorage.setItem(this.KEY, JSON.stringify(this.recentUsedRealms));
+  }
+
+  clean(existingRealms: string[]) {
+    this.recentUsedRealms = this.recentUsedRealms.filter((realm) =>
+      existingRealms.includes(realm)
+    );
+    this.save();
+  }
+
+  get used(): string[] {
+    return this.recentUsedRealms;
+  }
+
+  setRecentUsed(realm: string) {
+    if (!this.recentUsedRealms.includes(realm)) {
+      this.recentUsedRealms.unshift(realm);
+      this.save();
+    }
+  }
+}

src/context/realm-context/RealmContext.tsx

@@ -1,4 +1,5 @@
 import React, { useContext, useState } from "react";
+import { RecentUsed } from "../../components/realm-selector/recent-used";
 
 type RealmContextType = {
   realm: string;
@@ -16,9 +17,15 @@ export const RealmContextProvider = ({
   children,
 }: RealmContextProviderProps) => {
   const [realm, setRealm] = useState("");
+  const recentUsed = new RecentUsed();
+
+  const set = (realm: string) => {
+    recentUsed.setRecentUsed(realm);
+    setRealm(realm);
+  };
 
   return (
-    <RealmContext.Provider value={{ realm, setRealm }}>
+    <RealmContext.Provider value={{ realm, setRealm: set }}>
       {children}
     </RealmContext.Provider>
   );