Bugfix/Array Input Variables (#5196)

- Replace manual template variable processing in multiple components with a new utility function `processTemplateVariables`.

packages/components/nodes/agentflow/LLM/LLM.ts

@@ -12,7 +12,7 @@ import {
     replaceBase64ImagesWithFileReferences,
     updateFlowState
 } from '../utils'
-import { get } from 'lodash'
+import { processTemplateVariables } from '../../../src/utils'
 
 class LLM_Agentflow implements INode {
     label: string
@@ -529,36 +529,7 @@ class LLM_Agentflow implements INode {
             }
 
             // Process template variables in state
-            if (newState && Object.keys(newState).length > 0) {
-                for (const key in newState) {
-                    const stateValue = newState[key].toString()
-                    if (stateValue.includes('{{ output')) {
-                        // Handle simple output replacement
-                        if (stateValue === '{{ output }}') {
-                            newState[key] = finalResponse
-                            continue
-                        }
-
-                        // Handle JSON path expressions like {{ output.item1 }}
-                        // eslint-disable-next-line
-                        const match = stateValue.match(/{{[\s]*output\.([\w\.]+)[\s]*}}/)
-                        if (match) {
-                            try {
-                                // Parse the response if it's JSON
-                                const jsonResponse = typeof finalResponse === 'string' ? JSON.parse(finalResponse) : finalResponse
-                                // Get the value using lodash get
-                                const path = match[1]
-                                const value = get(jsonResponse, path)
-                                newState[key] = value ?? stateValue // Fall back to original if path not found
-                            } catch (e) {
-                                // If JSON parsing fails, keep original template
-                                console.warn(`Failed to parse JSON or find path in output: ${e}`)
-                                newState[key] = stateValue
-                            }
-                        }
-                    }
-                }
-            }
+            newState = processTemplateVariables(newState, finalResponse)
 
             // Replace the actual messages array with one that includes the file references for images instead of base64 data
             const messagesWithFileReferences = replaceBase64ImagesWithFileReferences(