feat(workspaces): add recency-based workspace switching and redirect

apps/sim/app/api/users/me/settings/route.ts

@@ -28,6 +28,7 @@ const SettingsSchema = z.object({
   errorNotificationsEnabled: z.boolean().optional(),
   snapToGridSize: z.number().min(0).max(50).optional(),
   showActionBar: z.boolean().optional(),
+  lastActiveWorkspaceId: z.string().optional(),
 })
 
 const defaultSettings = {
@@ -41,6 +42,7 @@ const defaultSettings = {
   errorNotificationsEnabled: true,
   snapToGridSize: 0,
   showActionBar: true,
+  lastActiveWorkspaceId: null,
 }
 
 export async function GET() {
@@ -76,6 +78,7 @@ export async function GET() {
           errorNotificationsEnabled: userSettings.errorNotificationsEnabled ?? true,
           snapToGridSize: userSettings.snapToGridSize ?? 0,
           showActionBar: userSettings.showActionBar ?? true,
+          lastActiveWorkspaceId: userSettings.lastActiveWorkspaceId ?? null,
         },
       },
       { status: 200 }

apps/sim/app/api/workspaces/[id]/route.ts

@@ -267,17 +267,34 @@ export async function DELETE(
   }
 
   try {
+    const [[workspaceRecord], totalWorkspaces] = await Promise.all([
+      db
+        .select({ name: workspace.name })
+        .from(workspace)
+        .where(and(eq(workspace.id, workspaceId), isNull(workspace.archivedAt)))
+        .limit(1),
+      db
+        .select({ id: permissions.entityId })
+        .from(permissions)
+        .innerJoin(workspace, eq(permissions.entityId, workspace.id))
+        .where(
+          and(
+            eq(permissions.userId, session.user.id),
+            eq(permissions.entityType, 'workspace'),
+            isNull(workspace.archivedAt)
+          )
+        ),
+    ])
+
+    /** Counts all workspace memberships (any role), not just admin — prevents the user from reaching a zero-workspace state. */
+    if (totalWorkspaces.length <= 1) {
+      return NextResponse.json({ error: 'Cannot delete the only workspace' }, { status: 400 })
+    }
+
     logger.info(
       `Deleting workspace ${workspaceId} for user ${session.user.id}, deleteTemplates: ${deleteTemplates}`
     )
 
-    // Fetch workspace name before deletion for audit logging
-    const [workspaceRecord] = await db
-      .select({ name: workspace.name })
-      .from(workspace)
-      .where(and(eq(workspace.id, workspaceId), isNull(workspace.archivedAt)))
-      .limit(1)
-
     const workspaceWorkflows = await db
       .select({ id: workflow.id })
       .from(workflow)

apps/sim/app/api/workspaces/route.ts

@@ -1,5 +1,5 @@
 import { db } from '@sim/db'
-import { permissions, workflow, workspace } from '@sim/db/schema'
+import { permissions, settings, workflow, workspace } from '@sim/db/schema'
 import { createLogger } from '@sim/logger'
 import { and, desc, eq, isNull, sql } from 'drizzle-orm'
 import { NextResponse } from 'next/server'
@@ -38,36 +38,47 @@ export async function GET(request: Request) {
     return NextResponse.json({ error: 'Invalid scope' }, { status: 400 })
   }
 
-  const userWorkspaces = await db
-    .select({
-      workspace: workspace,
-      permissionType: permissions.permissionType,
-    })
-    .from(permissions)
-    .innerJoin(workspace, eq(permissions.entityId, workspace.id))
-    .where(
-      scope === 'all'
-        ? and(eq(permissions.userId, session.user.id), eq(permissions.entityType, 'workspace'))
-        : scope === 'archived'
-          ? and(
-              eq(permissions.userId, session.user.id),
-              eq(permissions.entityType, 'workspace'),
-              sql`${workspace.archivedAt} IS NOT NULL`
-            )
-          : and(
-              eq(permissions.userId, session.user.id),
-              eq(permissions.entityType, 'workspace'),
-              isNull(workspace.archivedAt)
-            )
-    )
-    .orderBy(desc(workspace.createdAt))
+  const settingsQuery = db
+    .select({ lastActiveWorkspaceId: settings.lastActiveWorkspaceId })
+    .from(settings)
+    .where(eq(settings.userId, session.user.id))
+    .limit(1)
+
+  const [userWorkspaces, userSettings] = await Promise.all([
+    db
+      .select({
+        workspace: workspace,
+        permissionType: permissions.permissionType,
+      })
+      .from(permissions)
+      .innerJoin(workspace, eq(permissions.entityId, workspace.id))
+      .where(
+        scope === 'all'
+          ? and(eq(permissions.userId, session.user.id), eq(permissions.entityType, 'workspace'))
+          : scope === 'archived'
+            ? and(
+                eq(permissions.userId, session.user.id),
+                eq(permissions.entityType, 'workspace'),
+                sql`${workspace.archivedAt} IS NOT NULL`
+              )
+            : and(
+                eq(permissions.userId, session.user.id),
+                eq(permissions.entityType, 'workspace'),
+                isNull(workspace.archivedAt)
+              )
+      )
+      .orderBy(desc(workspace.createdAt)),
+    settingsQuery,
+  ])
+
+  const lastActiveWorkspaceId = userSettings[0]?.lastActiveWorkspaceId ?? null
 
   if (scope === 'active' && userWorkspaces.length === 0) {
     const defaultWorkspace = await createDefaultWorkspace(session.user.id, session.user.name)
 
     await migrateExistingWorkflows(session.user.id, defaultWorkspace.id)
 
-    return NextResponse.json({ workspaces: [defaultWorkspace] })
+    return NextResponse.json({ workspaces: [defaultWorkspace], lastActiveWorkspaceId })
   }
 
   if (scope === 'active') {
@@ -77,12 +88,15 @@ export async function GET(request: Request) {
   const workspacesWithPermissions = userWorkspaces.map(
     ({ workspace: workspaceDetails, permissionType }) => ({
       ...workspaceDetails,
-      role: permissionType === 'admin' ? 'owner' : 'member', // Map admin to owner for compatibility
+      role: permissionType === 'admin' ? 'owner' : 'member',
       permissions: permissionType,
     })
   )
 
-  return NextResponse.json({ workspaces: workspacesWithPermissions })
+  return NextResponse.json({
+    workspaces: workspacesWithPermissions,
+    lastActiveWorkspaceId,
+  })
 }
 
 // POST /api/workspaces - Create a new workspace

apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workspace-header/workspace-header.tsx

@@ -28,20 +28,12 @@ import { DeleteModal } from '@/app/workspace/[workspaceId]/w/components/sidebar/
 import { CreateWorkspaceModal } from '@/app/workspace/[workspaceId]/w/components/sidebar/components/workspace-header/components/create-workspace-modal/create-workspace-modal'
 import { InviteModal } from '@/app/workspace/[workspaceId]/w/components/sidebar/components/workspace-header/components/invite-modal'
 import { useSubscriptionData } from '@/hooks/queries/subscription'
+import type { Workspace } from '@/hooks/queries/workspace'
 import { usePermissionConfig } from '@/hooks/use-permission-config'
 import { useSettingsNavigation } from '@/hooks/use-settings-navigation'
 
 const logger = createLogger('WorkspaceHeader')
 
-interface Workspace {
-  id: string
-  name: string
-  color?: string
-  ownerId: string
-  role?: string
-  permissions?: 'admin' | 'write' | 'read' | null
-}
-
 interface WorkspaceHeaderProps {
   /** The active workspace object */
   activeWorkspace?: { name: string } | null
@@ -65,6 +57,8 @@ interface WorkspaceHeaderProps {
   onRenameWorkspace: (workspaceId: string, newName: string) => Promise<void>
   /** Callback to delete the workspace */
   onDeleteWorkspace: (workspaceId: string) => Promise<void>
+  /** Whether workspace deletion is in progress */
+  isDeletingWorkspace: boolean
   /** Callback to duplicate the workspace */
   onDuplicateWorkspace: (workspaceId: string, workspaceName: string) => Promise<void>
   /** Callback to export the workspace */
@@ -77,6 +71,8 @@ interface WorkspaceHeaderProps {
   onColorChange?: (workspaceId: string, color: string) => Promise<void>
   /** Callback to leave the workspace */
   onLeaveWorkspace?: (workspaceId: string) => Promise<void>
+  /** Whether workspace leave is in progress */
+  isLeavingWorkspace: boolean
   /** Current user's session ID for owner check */
   sessionUserId?: string
   /** Whether the sidebar is collapsed */
@@ -98,22 +94,22 @@ export function WorkspaceHeader({
   onCreateWorkspace,
   onRenameWorkspace,
   onDeleteWorkspace,
+  isDeletingWorkspace,
   onDuplicateWorkspace,
   onExportWorkspace,
   onImportWorkspace,
   isImportingWorkspace,
   onColorChange,
   onLeaveWorkspace,
+  isLeavingWorkspace,
   sessionUserId,
   isCollapsed = false,
 }: WorkspaceHeaderProps) {
   const [isCreateModalOpen, setIsCreateModalOpen] = useState(false)
   const [isInviteModalOpen, setIsInviteModalOpen] = useState(false)
   const [isDeleteModalOpen, setIsDeleteModalOpen] = useState(false)
-  const [isDeleting, setIsDeleting] = useState(false)
   const [deleteTarget, setDeleteTarget] = useState<Workspace | null>(null)
   const [isLeaveModalOpen, setIsLeaveModalOpen] = useState(false)
-  const [isLeaving, setIsLeaving] = useState(false)
   const [leaveTarget, setLeaveTarget] = useState<Workspace | null>(null)
   const [editingWorkspaceId, setEditingWorkspaceId] = useState<string | null>(null)
   const [editingName, setEditingName] = useState('')
@@ -296,32 +292,26 @@ export function WorkspaceHeader({
   const handleLeaveWorkspace = async () => {
     if (!leaveTarget || !onLeaveWorkspace) return
 
-    setIsLeaving(true)
     try {
       await onLeaveWorkspace(leaveTarget.id)
       setIsLeaveModalOpen(false)
       setLeaveTarget(null)
     } catch (error) {
       logger.error('Error leaving workspace:', error)
-    } finally {
-      setIsLeaving(false)
     }
   }
 
   /**
-   * Handle delete workspace
+   * Handle delete workspace after confirmation
    */
   const handleDeleteWorkspace = async () => {
-    setIsDeleting(true)
     try {
       const targetId = deleteTarget?.id || workspaceId
       await onDeleteWorkspace(targetId)
       setIsDeleteModalOpen(false)
       setDeleteTarget(null)
     } catch (error) {
       logger.error('Error deleting workspace:', error)
-    } finally {
-      setIsDeleting(false)
     }
   }
 
@@ -638,7 +628,7 @@ export function WorkspaceHeader({
             disableRename={!contextCanAdmin}
             disableDuplicate={!contextCanEdit}
             disableExport={!contextCanAdmin}
-            disableDelete={!contextCanAdmin}
+            disableDelete={!contextCanAdmin || workspaces.length <= 1}
             disableColorChange={!contextCanAdmin}
           />
         )
@@ -666,7 +656,7 @@ export function WorkspaceHeader({
         isOpen={isDeleteModalOpen}
         onClose={() => setIsDeleteModalOpen(false)}
         onConfirm={handleDeleteWorkspace}
-        isDeleting={isDeleting}
+        isDeleting={isDeletingWorkspace}
         itemType='workspace'
         itemName={deleteTarget?.name || activeWorkspaceFull?.name || activeWorkspace?.name}
       />
@@ -686,12 +676,16 @@ export function WorkspaceHeader({
             <Button
               variant='default'
               onClick={() => setIsLeaveModalOpen(false)}
-              disabled={isLeaving}
+              disabled={isLeavingWorkspace}
             >
               Cancel
             </Button>
-            <Button variant='destructive' onClick={handleLeaveWorkspace} disabled={isLeaving}>
-              {isLeaving ? 'Leaving...' : 'Leave Workspace'}
+            <Button
+              variant='destructive'
+              onClick={handleLeaveWorkspace}
+              disabled={isLeavingWorkspace}
+            >
+              {isLeavingWorkspace ? 'Leaving...' : 'Leave Workspace'}
             </Button>
           </ModalFooter>
         </ModalContent>

apps/sim/app/workspace/[workspaceId]/w/components/sidebar/hooks/index.ts

@@ -17,4 +17,4 @@ export { useSidebarResize } from './use-sidebar-resize'
 export { useTaskSelection } from './use-task-selection'
 export { useWorkflowOperations } from './use-workflow-operations'
 export { useWorkflowSelection } from './use-workflow-selection'
-export { useWorkspaceManagement, type Workspace } from './use-workspace-management'
+export { useWorkspaceManagement } from './use-workspace-management'