fix(posthog): correctly classify SSO auth_method, fix phantom empty-string workspace groups

Author: waleedlatif1

apps/sim/app/api/workflows/[id]/duplicate/route.ts

@@ -69,7 +69,7 @@ export async function POST(req: NextRequest, { params }: { params: Promise<{ id:
         new_workflow_id: result.id,
         workspace_id: workspaceId ?? '',
       },
-      { groups: { workspace: workspaceId ?? '' } }
+      workspaceId ? { groups: { workspace: workspaceId } } : undefined
     )
 
     const elapsed = Date.now() - startTime

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

@@ -280,7 +280,7 @@ export async function POST(req: NextRequest) {
       'workflow_created',
       { workflow_id: workflowId, workspace_id: workspaceId ?? '', name },
       {
-        groups: { workspace: workspaceId ?? '' },
+        groups: workspaceId ? { workspace: workspaceId } : undefined,
         setOnce: { first_workflow_created_at: new Date().toISOString() },
       }
     )

apps/sim/lib/auth/auth.ts

@@ -377,13 +377,19 @@ export const auth = betterAuth({
               .where(eq(schema.account.userId, account.userId))
 
             if (accountCount === 1) {
-              const isOAuth = account.providerId !== 'credential'
+              const { providerId } = account
+              const authMethod =
+                providerId === 'credential'
+                  ? 'email'
+                  : SSO_TRUSTED_PROVIDERS.includes(providerId)
+                    ? 'sso'
+                    : 'oauth'
               captureServerEvent(
                 account.userId,
                 'user_created',
                 {
-                  auth_method: isOAuth ? 'oauth' : 'email',
-                  ...(isOAuth ? { provider: account.providerId } : {}),
+                  auth_method: authMethod,
+                  ...(providerId !== 'credential' ? { provider: providerId } : {}),
                 },
                 { setOnce: { signup_at: new Date().toISOString() } }
               )