coder · BrunoQuaresma · Jan 12, 2024 · Jan 11, 2024 · Jan 12, 2024 · Jan 12, 2024
diff --git a/site/src/pages/WorkspacePage/ResourcesSidebar.tsx b/site/src/pages/WorkspacePage/ResourcesSidebar.tsx
@@ -12,13 +12,13 @@ import { getResourceIconPath } from "utils/workspace";
 type ResourcesSidebarProps = {
   failed: boolean;
   resources: WorkspaceResource[];
-  onChange: (resourceId: string) => void;
-  selected: string;
+  onChange: (resource: WorkspaceResource) => void;
+  isSelected: (resource: WorkspaceResource) => boolean;
 };
 
 export const ResourcesSidebar = (props: ResourcesSidebarProps) => {
   const theme = useTheme();
-  const { failed, onChange, selected, resources } = props;
+  const { failed, onChange, isSelected, resources } = props;
 
   return (
     <Sidebar>
@@ -46,8 +46,8 @@ export const ResourcesSidebar = (props: ResourcesSidebarProps) => {
         ))}
       {resources.map((r) => (
         <SidebarItem
-          onClick={() => onChange(r.id)}
-          isActive={r.id === selected}
+          onClick={() => onChange(r)}
+          isActive={isSelected(r)}
           key={r.id}
           css={styles.root}
         >

diff --git a/site/src/pages/WorkspacePage/Workspace.tsx b/site/src/pages/WorkspacePage/Workspace.tsx
@@ -26,6 +26,7 @@ import { SidebarIconButton } from "components/FullPageLayout/Sidebar";
 import HubOutlined from "@mui/icons-material/HubOutlined";
 import { ResourcesSidebar } from "./ResourcesSidebar";
 import { ResourceCard } from "components/Resources/ResourceCard";
+import { useResourcesNav } from "./useResourcesNav";
 import { MemoizedInlineMarkdown } from "components/Markdown/Markdown";
 
 export type WorkspaceError =
@@ -158,18 +159,10 @@ export const Workspace: FC<WorkspaceProps> = ({
     }
   };
 
-  const selectedResourceId = useTab("resources", "");
   const resources = [...workspace.latest_build.resources].sort(
     (a, b) => countAgents(b) - countAgents(a),
   );
-  const selectedResource = workspace.latest_build.resources.find(
-    (r) => r.id === selectedResourceId.value,
-  );
-  useEffect(() => {
-    if (resources.length > 0 && selectedResourceId.value === "") {
-      selectedResourceId.set(resources[0].id);
-    }
-  }, [resources, selectedResourceId]);
+  const resourcesNav = useResourcesNav(resources);
 
   return (
     <div
@@ -237,8 +230,8 @@ export const Workspace: FC<WorkspaceProps> = ({
         <ResourcesSidebar
           failed={workspace.latest_build.status === "failed"}
           resources={resources}
-          selected={selectedResourceId.value}
-          onChange={selectedResourceId.set}
+          isSelected={resourcesNav.isSelected}
+          onChange={resourcesNav.select}
         />
       )}
       {sidebarOption.value === "history" && (
@@ -384,9 +377,9 @@ export const Workspace: FC<WorkspaceProps> = ({
 
             {buildLogs}
 
-            {selectedResource && (
+            {resourcesNav.selected && (
               <ResourceCard
-                resource={selectedResource}
+                resource={resourcesNav.selected}
                 agentRow={(agent) => (
                   <AgentRow
                     key={agent.id}

diff --git a/site/src/pages/WorkspacePage/useResourcesNav.test.tsx b/site/src/pages/WorkspacePage/useResourcesNav.test.tsx
@@ -0,0 +1,132 @@
+import { renderHook } from "@testing-library/react";
+import { resourceOptionId, useResourcesNav } from "./useResourcesNav";
+import { WorkspaceResource } from "api/typesGenerated";
+import { MockWorkspaceResource } from "testHelpers/entities";
+import { RouterProvider, createMemoryRouter } from "react-router-dom";
+
+describe("useResourcesNav", () => {
+  it("selects the first resource if it has agents and no resource is selected", () => {
+    const resources: WorkspaceResource[] = [
+      MockWorkspaceResource,
+      {
+        ...MockWorkspaceResource,
+        agents: [],
+      },
+    ];
+    const { result } = renderHook(() => useResourcesNav(resources), {
+      wrapper: ({ children }) => (
+        <RouterProvider
+          router={createMemoryRouter([{ path: "/", element: children }])}
+        />
+      ),
+    });
+    expect(result.current.selected?.id).toBe(MockWorkspaceResource.id);
+  });
+
+  it("selects the first resource if it has agents and selected resource is not find", async () => {
+    const resources: WorkspaceResource[] = [
+      MockWorkspaceResource,
+      {
+        ...MockWorkspaceResource,
+        agents: [],
+      },
+    ];
+    const { result } = renderHook(() => useResourcesNav(resources), {
+      wrapper: ({ children }) => (
+        <RouterProvider
+          router={createMemoryRouter([{ path: "/", element: children }], {
+            initialEntries: ["/?resources=not_found_resource_id"],
+          })}
+        />
+      ),
+    });
+    expect(result.current.selected?.id).toBe(MockWorkspaceResource.id);
+  });
+
+  it("selects the resource passed in the URL", () => {
+    const resources: WorkspaceResource[] = [
+      {
+        ...MockWorkspaceResource,
+        type: "docker_container",
+        name: "coder_python",
+      },
+      {
+        ...MockWorkspaceResource,
+        type: "docker_container",
+        name: "coder_java",
+      },
+      {
+        ...MockWorkspaceResource,
+        type: "docker_image",
+        name: "coder_image_python",
+        agents: [],
+      },
+    ];
+    const { result } = renderHook(() => useResourcesNav(resources), {
+      wrapper: ({ children }) => (
+        <RouterProvider
+          router={createMemoryRouter([{ path: "/", element: children }], {
+            initialEntries: [`/?resources=${resourceOptionId(resources[1])}`],
+          })}
+        />
+      ),
+    });
+    expect(result.current.selected?.id).toBe(resources[1].id);
+  });
+
+  it("selects a resource when resources are updated", () => {
+    const startedResources: WorkspaceResource[] = [
+      {
+        ...MockWorkspaceResource,
+        type: "docker_container",
+        name: "coder_python",
+      },
+      {
+        ...MockWorkspaceResource,
+        type: "docker_container",
+        name: "coder_java",
+      },
+      {
+        ...MockWorkspaceResource,
+        type: "docker_image",
+        name: "coder_image_python",
+        agents: [],
+      },
+    ];
+    const { result, rerender } = renderHook(
+      ({ resources }) => useResourcesNav(resources),
+      {
+        wrapper: ({ children }) => (
+          <RouterProvider
+            router={createMemoryRouter([{ path: "/", element: children }])}
+          />
+        ),
+        initialProps: { resources: startedResources },
+      },
+    );
+    expect(result.current.selected?.id).toBe(startedResources[0].id);
+
+    // When a workspace is stopped, there are no resources with agents, so we
+    // need to retain the currently selected resource. This ensures consistency
+    // when handling workspace updates that involve a sequence of stopping and
+    // starting. By preserving the resource selection, we maintain the desired
+    // configuration and prevent unintended changes during the stop-and-start
+    // process.
+    const stoppedResources: WorkspaceResource[] = [
+      {
+        ...MockWorkspaceResource,
+        type: "docker_image",
+        name: "coder_image_python",
+        agents: [],
+      },
+    ];
+    rerender({ resources: stoppedResources });
+    expect(result.current.selectedValue).toBe(
+      resourceOptionId(startedResources[0]),
+    );
+
+    // When a workspace is started again a resource is selected
+    rerender({ resources: startedResources });
+    expect(result.current.selected?.id).toBe(startedResources[0].id);
+  });
+});
diff --git a/site/src/pages/WorkspacePage/useResourcesNav.ts b/site/src/pages/WorkspacePage/useResourcesNav.ts
@@ -0,0 +1,55 @@
+import { WorkspaceResource } from "api/typesGenerated";
+import { useTab } from "hooks";
+import { useEffectEvent } from "hooks/hookPolyfills";
+import { useCallback, useEffect } from "react";
+
+export const resourceOptionId = (resource: WorkspaceResource) => {
+  return `${resource.type}_${resource.name}`;
+};
+
+// TODO: This currently serves as a temporary workaround for synchronizing the
+// resources tab during workspace transitions. The optimal resolution involves
+// eliminating the sync and updating the URL within the workspace data update
+// event in the WebSocket "onData" event. However, this requires substantial
+// refactoring. Consider revisiting this solution in the future for a more
+// robust implementation.
+export const useResourcesNav = (resources: WorkspaceResource[]) => {
+  const resourcesNav = useTab("resources", "");
+
+  const isSelected = useCallback(
+    (resource: WorkspaceResource) => {
+      return resourceOptionId(resource) === resourcesNav.value;
+    },
+    [resourcesNav.value],
+  );
+
+  const selectedResource = resources.find(isSelected);
+  const onSelectedResourceChange = useEffectEvent(
+    (previousResource?: WorkspaceResource) => {
+      const hasResourcesWithAgents =
+        resources.length > 0 &&
+        resources[0].agents &&
+        resources[0].agents.length > 0;
+      if (!previousResource && hasResourcesWithAgents) {
+        resourcesNav.set(resourceOptionId(resources[0]));
+      }
+    },
+  );
+  useEffect(() => {
+    onSelectedResourceChange(selectedResource);
+  }, [onSelectedResourceChange, selectedResource]);
+
+  const select = useCallback(
+    (resource: WorkspaceResource) => {
+      resourcesNav.set(resourceOptionId(resource));
+    },
+    [resourcesNav],
+  );
+
+  return {
+    isSelected,
+    select,
+    selected: selectedResource,
+    selectedValue: resourcesNav.value,
+  };
+};