Feature/Add prepend messages to memory (#2410)

add prepend messages to memory

packages/server/src/Interface.ts

@@ -212,6 +212,7 @@ export interface IncomingInput {
     stopNodeId?: string
     uploads?: IFileUpload[]
     leadEmail?: string
+    history?: IMessage[]
 }
 
 export interface IActiveChatflows {

packages/server/src/utils/buildChatflow.ts

@@ -145,6 +145,9 @@ export const utilBuildChatflow = async (req: Request, socketIO?: Server, isInter
         const memoryType = memoryNode?.data.label
         let sessionId = getMemorySessionId(memoryNode, incomingInput, chatId, isInternal)
 
+        // Get prepend messages
+        const prependMessages = incomingInput.history
+
         /*   Reuse the flow without having to rebuild (to avoid duplicated upsert, recomputation, reinitialization of memory) when all these conditions met:
          * - Node Data already exists in pool
          * - Still in sync (i.e the flow has not been modified since)
@@ -226,7 +229,8 @@ export const utilBuildChatflow = async (req: Request, socketIO?: Server, isInter
                     appServer.nodesPool.componentNodes,
                     appServer.AppDataSource,
                     databaseEntities,
-                    logger
+                    logger,
+                    prependMessages
                 )
             }
 
@@ -301,7 +305,8 @@ export const utilBuildChatflow = async (req: Request, socketIO?: Server, isInter
                   analytic: chatflow.analytic,
                   uploads: incomingInput.uploads,
                   socketIO,
-                  socketIOClientId: incomingInput.socketIOClientId
+                  socketIOClientId: incomingInput.socketIOClientId,
+                  prependMessages
               })
             : await nodeInstance.run(nodeToExecuteData, incomingInput.question, {
                   chatId,
@@ -310,7 +315,8 @@ export const utilBuildChatflow = async (req: Request, socketIO?: Server, isInter
                   appDataSource: appServer.AppDataSource,
                   databaseEntities,
                   analytic: chatflow.analytic,
-                  uploads: incomingInput.uploads
+                  uploads: incomingInput.uploads,
+                  prependMessages
               })
         result = typeof result === 'string' ? { text: result } : result
 

packages/server/src/utils/index.ts

@@ -1306,7 +1306,8 @@ export const getSessionChatHistory = async (
     componentNodes: IComponentNodes,
     appDataSource: DataSource,
     databaseEntities: IDatabaseEntity,
-    logger: any
+    logger: any,
+    prependMessages?: IMessage[]
 ): Promise<IMessage[]> => {
     const nodeInstanceFilePath = componentNodes[memoryNode.data.name].filePath as string
     const nodeModule = await import(nodeInstanceFilePath)
@@ -1324,7 +1325,7 @@ export const getSessionChatHistory = async (
         logger
     })
 
-    return (await initializedInstance.getChatMessages(sessionId)) as IMessage[]
+    return (await initializedInstance.getChatMessages(sessionId, undefined, prependMessages)) as IMessage[]
 }
 
 /**