feat: Support for conversational streaming (#809)

### What problem does this PR solve?

feat: Support for conversational streaming
#709

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/chat/utils.ts

@@ -1,5 +1,7 @@
+import { MessageType } from '@/constants/chat';
 import { IConversation, IReference } from '@/interfaces/database/chat';
 import { EmptyConversationId, variableEnabledFieldMap } from './constants';
+import { IClientConversation, IMessage } from './interface';
 
 export const excludeUnEnabledVariables = (values: any) => {
   const unEnabledFields: Array<keyof typeof variableEnabledFieldMap> =
@@ -20,7 +22,7 @@ export const getDocumentIdsFromConversionReference = (data: IConversation) => {
   const documentIds = data.reference.reduce(
     (pre: Array<string>, cur: IReference) => {
       cur.doc_aggs
-        .map((x) => x.doc_id)
+        ?.map((x) => x.doc_id)
         .forEach((x) => {
           if (pre.every((y) => y !== x)) {
             pre.push(x);
@@ -32,3 +34,20 @@ export const getDocumentIdsFromConversionReference = (data: IConversation) => {
   );
   return documentIds.join(',');
 };
+
+export const buildMessageItemReference = (
+  conversation: IClientConversation,
+  message: IMessage,
+) => {
+  const assistantMessages = conversation.message
+    ?.filter((x) => x.role === MessageType.Assistant)
+    .slice(1);
+  const referenceIndex = assistantMessages.findIndex(
+    (x) => x.id === message.id,
+  );
+  const reference = message?.reference
+    ? message?.reference
+    : conversation.reference[referenceIndex];
+
+  return reference;
+};