Reroute to landing page from previously registered extension cluster pages

Signed-off-by: Sebastian Malton <sebastian@malton.name>

src/extensions/registries/page-registry.ts

@@ -26,6 +26,7 @@ import { observer } from "mobx-react";
 import { BaseRegistry } from "./base-registry";
 import { LensExtension, LensExtensionId, sanitizeExtensionName } from "../lens-extension";
 import { createPageParam, PageParam, PageParamInit, searchParamsOptions } from "../../renderer/navigation";
+import { computed, observable } from "mobx";
 
 export interface PageRegistration {
   /**
@@ -92,6 +93,8 @@ export function getExtensionPageUrl(target: PageTarget): string {
 }
 
 class PageRegistry extends BaseRegistry<PageRegistration, RegisteredPage> {
+  protected knownUrls = observable.set<string>();
+
   protected getRegisteredItem(page: PageRegistration, ext: LensExtension): RegisteredPage {
     const { id: pageId } = page;
     const extensionId = ext.name;
@@ -99,6 +102,8 @@ class PageRegistry extends BaseRegistry<PageRegistration, RegisteredPage> {
     const components = this.normalizeComponents(page.components, params);
     const url = getExtensionPageUrl({ extensionId, pageId });
 
+    this.knownUrls.add(url);
+
     return {
       id: pageId, extensionId, params, components, url,
     };
@@ -135,10 +140,7 @@ class PageRegistry extends BaseRegistry<PageRegistration, RegisteredPage> {
         );
 
         if (notAStringValue && !(parse || stringify)) {
-          throw new Error(
-            `PageRegistry: param's "${paramName}" initialization has failed: 
-              paramInit.parse() and paramInit.stringify() are required for non string | string[] "defaultValue"`,
-          );
+          throw new Error(`PageRegistry: param's "${paramName}" initialization has failed: paramInit.parse() and paramInit.stringify() are required for non string | string[] "defaultValue"`);
         }
 
         paramInit.defaultValue = value;
@@ -152,6 +154,13 @@ class PageRegistry extends BaseRegistry<PageRegistration, RegisteredPage> {
     return normalizedParams;
   }
 
+  /**
+   * Get the list of all known URLS that have been registered with this registry.
+   */
+  @computed get redirectEntries() {
+    return [...this.knownUrls];
+  }
+
   getByPageTarget(target: PageTarget): RegisteredPage | null {
     return this.getItems().find(page => page.extensionId === target.extensionId && page.id === target.pageId) || null;
   }

src/renderer/cluster-frame.tsx

@@ -211,6 +211,12 @@ export class ClusterFrame extends React.Component {
               {this.renderExtensionTabLayoutRoutes()}
               {this.renderExtensionRoutes()}
               <Redirect exact from="/" to={this.startUrl}/>
+              {
+                ClusterPageRegistry
+                  .getInstance()
+                  .redirectEntries
+                  .map(url => <Redirect key={url} from={url} to={this.startUrl} />)
+              }
               <Route component={NotFound}/>
             </Switch>
           </MainLayout>