[navigation]Refactor: flatten left nav in Analytics(all) use case

changelogs/fragments/8332.yml

@@ -0,0 +1,3 @@
+feat:
+- [navigation] flatten left nav in Analytics(all) use case ([#8332](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/8332))
+- [navigation] Adjust the appearances of the left navigation menu and the landing page ([#8332](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/8332))

src/core/public/chrome/nav_group/nav_group_service.test.ts

@@ -231,6 +231,66 @@ describe('ChromeNavGroupService#start()', () => {
     expect(groupsMap[mockedGroupBar.id].navLinks.length).toEqual(1);
   });
 
+  it('should populate links with custom category if the nav link is inside second level but no entry in all use case', async () => {
+    const chromeNavGroupService = new ChromeNavGroupService();
+    const uiSettings = uiSettingsServiceMock.createSetupContract();
+    const chromeNavGroupServiceSetup = chromeNavGroupService.setup({ uiSettings });
+
+    chromeNavGroupServiceSetup.addNavLinksToGroup(DEFAULT_NAV_GROUPS.all, [
+      {
+        id: 'foo',
+      },
+    ]);
+    chromeNavGroupServiceSetup.addNavLinksToGroup(DEFAULT_NAV_GROUPS.essentials, [
+      {
+        id: 'bar',
+        title: 'bar',
+      },
+      {
+        id: 'foo',
+        title: 'foo',
+      },
+    ]);
+    const navLinkServiceStart = mockedNavLink.start({
+      http: mockedHttpService,
+      application: mockedApplicationService,
+    });
+    navLinkServiceStart.getNavLinks$ = jest.fn().mockReturnValue(
+      new Rx.BehaviorSubject([
+        {
+          id: 'foo',
+        },
+        {
+          id: 'bar',
+        },
+        {
+          id: 'customized_app',
+        },
+      ])
+    );
+    const chromeStart = await chromeNavGroupService.start({
+      navLinks: navLinkServiceStart,
+      application: mockedApplicationService,
+      breadcrumbsEnricher$: new Rx.BehaviorSubject<ChromeBreadcrumbEnricher | undefined>(undefined),
+      workspaces: workspacesServiceMock.createStartContract(),
+    });
+    const groupsMap = await chromeStart.getNavGroupsMap$().pipe(first()).toPromise();
+    expect(groupsMap[ALL_USE_CASE_ID].navLinks).toEqual([
+      {
+        id: 'foo',
+      },
+      {
+        id: 'bar',
+        title: 'bar',
+        category: { id: 'custom', label: 'Custom', order: 8500 },
+      },
+      {
+        id: 'customized_app',
+        category: { id: 'custom', label: 'Custom', order: 8500 },
+      },
+    ]);
+  });
+
   it('should return navGroupEnabled from ui settings', async () => {
     const chromeNavGroupService = new ChromeNavGroupService();
     const uiSettings = uiSettingsServiceMock.createSetupContract();
@@ -381,49 +441,6 @@ describe('ChromeNavGroupService#start()', () => {
     expect(currentNavGroup?.title).toEqual('barGroupTitle');
   });
 
-  it('should be able to find the right nav group when visible nav group is all', async () => {
-    const uiSettings = uiSettingsServiceMock.createSetupContract();
-    const navGroupEnabled$ = new Rx.BehaviorSubject(true);
-    uiSettings.get$.mockImplementation(() => navGroupEnabled$);
-
-    const chromeNavGroupService = new ChromeNavGroupService();
-    const chromeNavGroupServiceSetup = chromeNavGroupService.setup({ uiSettings });
-
-    chromeNavGroupServiceSetup.addNavLinksToGroup(
-      {
-        id: ALL_USE_CASE_ID,
-        title: 'fooGroupTitle',
-        description: 'foo description',
-      },
-      [mockedNavLinkFoo]
-    );
-
-    chromeNavGroupServiceSetup.addNavLinksToGroup(
-      {
-        id: 'bar-group',
-        title: 'barGroupTitle',
-        description: 'bar description',
-        status: NavGroupStatus.Hidden,
-      },
-      [mockedNavLinkFoo, mockedNavLinkBar]
-    );
-
-    const chromeNavGroupServiceStart = await chromeNavGroupService.start({
-      navLinks: mockedNavLinkService,
-      application: mockedApplicationService,
-      breadcrumbsEnricher$: new Rx.BehaviorSubject<ChromeBreadcrumbEnricher | undefined>(undefined),
-      workspaces: workspacesServiceMock.createStartContract(),
-    });
-    mockedApplicationService.navigateToApp(mockedNavLinkBar.id);
-
-    const currentNavGroup = await chromeNavGroupServiceStart
-      .getCurrentNavGroup$()
-      .pipe(first())
-      .toPromise();
-
-    expect(currentNavGroup?.id).toEqual('bar-group');
-  });
-
   it('should be able to find the right nav group when visible nav group length is 1 and is not all nav group', async () => {
     const uiSettings = uiSettingsServiceMock.createSetupContract();
     const navGroupEnabled$ = new Rx.BehaviorSubject(true);

src/core/public/chrome/nav_group/nav_group_service.ts

@@ -11,6 +11,7 @@
   ChromeNavLink,
   WorkspacesStart,
 } from 'opensearch-dashboards/public';
+import { i18n } from '@osd/i18n';
 import { map, switchMap, takeUntil } from 'rxjs/operators';
 import { IUiSettingsClient } from '../../ui_settings';
 import {
@@ -22,7 +23,7 @@
 import { InternalApplicationStart } from '../../application';
 import { NavGroupStatus, NavGroupType } from '../../../../core/types';
 import { ChromeBreadcrumb, ChromeBreadcrumbEnricher } from '../chrome_service';
-import { ALL_USE_CASE_ID } from '../../../utils';
+import { ALL_USE_CASE_ID, DEFAULT_APP_CATEGORIES } from '../../../utils';
 
 export const CURRENT_NAV_GROUP_ID = 'core.chrome.currentNavGroupId';
 
@@ -74,6 +75,14 @@
   setCurrentNavGroup: (navGroupId: string | undefined) => void;
 }
 
+// Custom category is used for those features not belong to any of use cases in all use case.
+// and the custom category should always sit after manage category
+const customCategory: AppCategory = {
+  id: 'custom',
+  label: i18n.translate('core.ui.customNavList.label', { defaultMessage: 'Custom' }),
+  order: (DEFAULT_APP_CATEGORIES.manage.order || 0) + 500,
+};
+
 /** @internal */
 export class ChromeNavGroupService {
   private readonly navGroupsMap$ = new BehaviorSubject<Record<string, NavGroupItemInMap>>({});
@@ -114,12 +123,87 @@
   }
 
   private sortNavGroupNavLinks(
-    navGroup: NavGroupItemInMap,
+    navLinks: NavGroupItemInMap['navLinks'],
     allValidNavLinks: Array<Readonly<ChromeNavLink>>
   ) {
-    return getSortedNavLinks(
-      fulfillRegistrationLinksToChromeNavLinks(navGroup.navLinks, allValidNavLinks)
-    );
+    return getSortedNavLinks(fulfillRegistrationLinksToChromeNavLinks(navLinks, allValidNavLinks));
+  }
+
+  private getNavLinksForAllUseCase(
+    navGroupsMap: Record<string, NavGroupItemInMap>,
+    navLinks: Array<Readonly<ChromeNavLink>>
+  ) {
+    // Note: we need to use a new pointer when `assign navGroupsMap[ALL_USE_CASE_ID]?.navLinks`
+    // because we will mutate the array directly in the following code.
+    const navLinksResult: ChromeRegistrationNavLink[] = [
+      ...(navGroupsMap[ALL_USE_CASE_ID]?.navLinks || []),
+    ];
+
+    // Append all the links that do not have use case info to keep backward compatible
+    const linkIdsWithNavGroupInfo = Object.values(navGroupsMap).reduce((accumulator, navGroup) => {
+      // Nav groups without type will be regarded as use case,
+      // we should transform use cases to a category and append links with `showInAllNavGroup: true` under the category
+      if (!navGroup.type) {
+        // Append use case section into left navigation
+        const categoryInfo = {
+          id: navGroup.id,
+          label: navGroup.title,
+          order: navGroup.order,
+        };
+
+        const fulfilledLinksOfNavGroup = fulfillRegistrationLinksToChromeNavLinks(
+          navGroup.navLinks,
+          navLinks
+        );
+
+        const linksForAllUseCaseWithinNavGroup: ChromeRegistrationNavLink[] = [];
+
+        fulfilledLinksOfNavGroup.forEach((navLink) => {
+          if (!navLink.showInAllNavGroup) {
+            return;
+          }
+
+          linksForAllUseCaseWithinNavGroup.push({
+            ...navLink,
+            category: categoryInfo,
+          });
+        });
+
+        navLinksResult.push(...linksForAllUseCaseWithinNavGroup);
+
+        if (!linksForAllUseCaseWithinNavGroup.length) {
+          /**
+           * Find if there are any links inside a use case but without a `see all` entry.
+           * If so, append these features into custom category as a fallback
+           */
+          fulfillRegistrationLinksToChromeNavLinks(navGroup.navLinks, navLinks).forEach(
+            (navLink) => {
+              // Links that already exists in all use case do not need to reappend
+              if (navLinksResult.find((navLinkInAll) => navLinkInAll.id === navLink.id)) {
+                return;
+              }
+              navLinksResult.push({
+                ...navLink,
+                category: customCategory,
+              });
+            }
+          );
+        }
+      }
+
+      return [...accumulator, ...navGroup.navLinks.map((navLink) => navLink.id)];
+    }, [] as string[]);
+    navLinks.forEach((navLink) => {
+      if (linkIdsWithNavGroupInfo.includes(navLink.id)) {
+        return;
+      }
+      navLinksResult.push({
+        ...navLink,
+        category: customCategory,
+      });
+    });
+
+    return navLinksResult;
   }
 
   private getSortedNavGroupsMap$() {
@@ -129,10 +213,20 @@
         map(([navGroupsMap, navLinks]) => {
           return Object.keys(navGroupsMap).reduce((sortedNavGroupsMap, navGroupId) => {
             const navGroup = navGroupsMap[navGroupId];
-            sortedNavGroupsMap[navGroupId] = {
-              ...navGroup,
-              navLinks: this.sortNavGroupNavLinks(navGroup, navLinks),
-            };
+            if (navGroupId === ALL_USE_CASE_ID) {
+              sortedNavGroupsMap[navGroupId] = {
+                ...navGroup,
+                navLinks: this.sortNavGroupNavLinks(
+                  this.getNavLinksForAllUseCase(navGroupsMap, navLinks),
+                  navLinks
+                ),
+              };
+            } else {
+              sortedNavGroupsMap[navGroupId] = {
+                ...navGroup,
+                navLinks: this.sortNavGroupNavLinks(navGroup.navLinks, navLinks),
+              };
+            }
             return sortedNavGroupsMap;
           }, {} as Record<string, NavGroupItemInMap>);
         })
@@ -270,14 +364,10 @@
           });
         };
         if (visibleUseCases.length === 1) {
-          if (visibleUseCases[0].id === ALL_USE_CASE_ID) {
-            // If the only visible use case is all use case
-            // All the other nav groups will be visible because all use case can visit all of the nav groups.
-            Object.values(navGroupMap).forEach((navGroup) => mapAppIdToNavGroup(navGroup));
-          } else {
-            // It means we are in a workspace, we should only use the visible use cases
-            visibleUseCases.forEach((navGroup) => mapAppIdToNavGroup(navGroup));
-          }
+          // The length will be 1 if inside a workspace
+          // as workspace plugin will register a filter to only make the selected nav group visible.
+          // In order to tell which nav group we are in, we should use the only visible use case if the visibleUseCases.length equals 1.
+          visibleUseCases.forEach((navGroup) => mapAppIdToNavGroup(navGroup));
         } else {
           // Nav group of Hidden status should be filtered out when counting navGroups the currentApp belongs to
           Object.values(navGroupMap).forEach((navGroup) => {