feat: Add If/Else node (#16833)

Closes [#1265](https://github.com/twentyhq/core-team-issues/issues/1265)

packages/twenty-front/src/modules/workflow/workflow-steps/hooks/useCreateStep.ts

@@ -34,12 +34,16 @@ export const useCreateStep = () => {
     nextStepId,
     position,
     connectionOptions,
+    shouldSelectNode = true,
+    workflowVersionId: providedWorkflowVersionId,
   }: {
     newStepType: WorkflowActionType;
     parentStepId: string | undefined;
     nextStepId: string | undefined;
     position?: { x: number; y: number };
     connectionOptions?: WorkflowStepConnectionOptions;
+    shouldSelectNode?: boolean;
+    workflowVersionId?: string;
   }) => {
     if (isLoading === true) {
       return;
@@ -48,7 +52,8 @@ export const useCreateStep = () => {
     setIsLoading(true);
 
     try {
-      const workflowVersionId = await getUpdatableWorkflowVersion();
+      const workflowVersionId =
+        providedWorkflowVersionId ?? (await getUpdatableWorkflowVersion());
       const id = v4();
 
       const workflowVersionStepChanges = (
@@ -77,7 +82,9 @@ export const useCreateStep = () => {
         throw new Error("Couldn't create step");
       }
 
-      setWorkflowSelectedNode(id);
+      if (shouldSelectNode) {
+        setWorkflowSelectedNode(id);
+      }
       setWorkflowLastCreatedStepId(id);
 
       return isDefined(createdFirstStepDiff)

packages/twenty-front/src/modules/workflow/workflow-steps/hooks/useDeleteStep.ts

@@ -3,8 +3,10 @@ import { useRecoilComponentValue } from '@/ui/utilities/state/component-state/ho
 import { useGetUpdatableWorkflowVersionOrThrow } from '@/workflow/hooks/useGetUpdatableWorkflowVersionOrThrow';
 import { useWorkflowWithCurrentVersion } from '@/workflow/hooks/useWorkflowWithCurrentVersion';
 import { workflowVisualizerWorkflowIdComponentState } from '@/workflow/states/workflowVisualizerWorkflowIdComponentState';
+import { type WorkflowIfElseAction } from '@/workflow/types/Workflow';
 import { useDeleteWorkflowVersionStep } from '@/workflow/workflow-steps/hooks/useDeleteWorkflowVersionStep';
 import { useResetWorkflowAiAgentPermissionsStateOnCommandMenuClose } from '@/workflow/workflow-steps/workflow-actions/ai-agent-action/hooks/useResetWorkflowAiAgentPermissionsStateOnCommandMenuClose';
+import { getEmptyChildStepIds } from '@/workflow/workflow-steps/workflow-actions/if-else-action/utils/getEmptyChildStepIds';
 import { useStepsOutputSchema } from '@/workflow/workflow-variables/hooks/useStepsOutputSchema';
 import { isDefined } from 'twenty-shared/utils';
 
@@ -25,11 +27,35 @@ export const useDeleteStep = () => {
   const deleteStep = async (stepId: string) => {
     const workflowVersionId = await getUpdatableWorkflowVersion();
 
-    const isAiAgentStep =
-      isDefined(workflow?.currentVersion?.steps) &&
-      workflow.currentVersion.steps.some(
-        (step) => step.id === stepId && step.type === 'AI_AGENT',
-      );
+    const steps = workflow?.currentVersion?.steps;
+    const stepToDelete = isDefined(steps)
+      ? steps.find((step) => step.id === stepId)
+      : undefined;
+
+    if (
+      isDefined(stepToDelete) &&
+      isDefined(steps) &&
+      stepToDelete.type === 'IF_ELSE'
+    ) {
+      const emptyChildStepIds = getEmptyChildStepIds({
+        ifElseAction: stepToDelete as WorkflowIfElseAction,
+        allSteps: steps,
+      });
+
+      for (const emptyChildStepId of emptyChildStepIds) {
+        await deleteWorkflowVersionStep({
+          workflowVersionId,
+          stepId: emptyChildStepId,
+        });
+      }
+
+      if (emptyChildStepIds.length > 0) {
+        deleteStepsOutputSchema({
+          stepIds: emptyChildStepIds,
+          workflowVersionId,
+        });
+      }
+    }
 
     await deleteWorkflowVersionStep({
       workflowVersionId,
@@ -43,7 +69,7 @@ export const useDeleteStep = () => {
       workflowVersionId,
     });
 
-    if (isAiAgentStep) {
+    if (isDefined(stepToDelete) && stepToDelete.type === 'AI_AGENT') {
       resetPermissionState();
     }
   };