101 featch available variables from previous steps (#8062)

- add outputSchema in workflow step settings
- use outputSchemas to compute step available variables


https://github.com/user-attachments/assets/6b851d8e-625c-49ff-b29c-074cd86cbfee

packages/twenty-server/src/modules/workflow/workflow-executor/types/workflow-action.type.ts

@@ -1,6 +1,7 @@
 import {
   WorkflowCodeStepSettings,
   WorkflowSendEmailStepSettings,
+  WorkflowStepSettings,
 } from 'src/modules/workflow/workflow-executor/types/workflow-step-settings.type';
 
 export enum WorkflowActionType {
@@ -11,6 +12,8 @@ export enum WorkflowActionType {
 type BaseWorkflowStep = {
   id: string;
   name: string;
+  type: WorkflowActionType;
+  settings: WorkflowStepSettings;
   valid: boolean;
 };
 

packages/twenty-server/src/modules/workflow/workflow-executor/types/workflow-step-settings.type.ts

@@ -1,4 +1,8 @@
+export type OutputSchema = object;
+
 type BaseWorkflowStepSettings = {
+  input: object;
+  outputSchema: OutputSchema;
   errorHandlingOptions: {
     retryOnFailure: {
       value: boolean;
@@ -11,6 +15,8 @@ type BaseWorkflowStepSettings = {
 
 export type WorkflowCodeStepInput = {
   serverlessFunctionId: string;
+  serverlessFunctionVersion: string;
+  payloadInput: object;
 };
 
 export type WorkflowCodeStepSettings = BaseWorkflowStepSettings & {
@@ -27,3 +33,7 @@ export type WorkflowSendEmailStepInput = {
 export type WorkflowSendEmailStepSettings = BaseWorkflowStepSettings & {
   input: WorkflowSendEmailStepInput;
 };
+
+export type WorkflowStepSettings =
+  | WorkflowSendEmailStepSettings
+  | WorkflowCodeStepSettings;