add $vars and $flow to custom function

packages/components/nodes/tools/CustomTool/CustomTool.ts

@@ -1,5 +1,5 @@
 import { ICommonObject, IDatabaseEntity, INode, INodeData, INodeOptionsValue, INodeParams } from '../../../src/Interface'
-import { convertSchemaToZod, getBaseClasses } from '../../../src/utils'
+import { convertSchemaToZod, getBaseClasses, getVars } from '../../../src/utils'
 import { DynamicStructuredTool } from './core'
 import { z } from 'zod'
 import { DataSource } from 'typeorm'
@@ -81,23 +81,7 @@ class CustomTool_Tools implements INode {
             }
             if (customToolFunc) obj.code = customToolFunc
 
-            const variables = await appDataSource.getRepository(databaseEntities['Variable']).find()
-
-            // override variables defined in overrideConfig
-            // nodeData.inputs.variables is an Object, check each property and override the variable
-            if (nodeData?.inputs?.vars) {
-                for (const propertyName of Object.getOwnPropertyNames(nodeData.inputs.vars)) {
-                    const foundVar = variables.find((v) => v.name === propertyName)
-                    if (foundVar) {
-                        // even if the variable was defined as runtime, we override it with static value
-                        foundVar.type = 'static'
-                        foundVar.value = nodeData.inputs.vars[propertyName]
-                    } else {
-                        // add it the variables, if not found locally in the db
-                        variables.push({ name: propertyName, type: 'static', value: nodeData.inputs.vars[propertyName] })
-                    }
-                }
-            }
+            const variables = await getVars(appDataSource, databaseEntities, nodeData)
 
             const flow = { chatflowId: options.chatflowid }