fix: save/copy chat if chat has been cleared

bigbluebutton-html5/imports/ui/components/chat/chat-graphql/chat-header/chat-actions/component.tsx

@@ -75,6 +75,7 @@ export const ChatActions: React.FC = () => {
       const exportedString = generateExportedMessages(
         dataHistory.chat_message_public,
         dataHistory.user_welcomeMsgs[0],
+        intl,
       );
       if (downloadOrCopyRef.current === 'download') {
         const link = document.createElement('a');

bigbluebutton-html5/imports/ui/components/chat/chat-graphql/chat-header/chat-actions/queries.ts

@@ -20,6 +20,7 @@ query getChatMessageHistory {
   chat_message_public(order_by: {createdTime: asc}) {
     message
     messageId
+    messageType
     createdTime
     user {
       userId

bigbluebutton-html5/imports/ui/components/chat/chat-graphql/chat-header/chat-actions/services.ts

@@ -1,26 +1,45 @@
 import { Message } from "/imports/ui/Types/message";
 import { makeCall } from "/imports/ui/services/api";
 import { stripTags, unescapeHtml } from '/imports/utils/string-utils';
+import { defineMessages } from 'react-intl';
+import { ChatMessageType } from '/imports/ui/core/enums/chat';
+
+const intlMessages = defineMessages({
+  chatClear: {
+    id: 'app.chat.clearPublicChatMessage',
+    description: 'message of when clear the public chat',
+  },
+});
 
 export const htmlDecode = (input: string) => {
   const replacedBRs = input.replaceAll('<br/>', '\n');
   return unescapeHtml(stripTags(replacedBRs));
 };
 
-export const generateExportedMessages = (messages: Array<Message>, welcomeSettings: {welcomeMsg: string, welcomeMsgForModerators: string | null} ): string  => {
+export const generateExportedMessages = (messages: Array<Message>, welcomeSettings: { welcomeMsg: string, welcomeMsgForModerators: string | null }, intl): string => {
   const welcomeMessage = htmlDecode(welcomeSettings.welcomeMsg);
   const modOnlyMessage = welcomeSettings.welcomeMsgForModerators && htmlDecode(welcomeSettings.welcomeMsgForModerators);
-  const systemMessages = `${welcomeMessage ? `system: ${welcomeMessage}`: ''}\n ${modOnlyMessage ? `system: ${modOnlyMessage}`: ''}\n`
-  
+  const systemMessages = `${welcomeMessage ? `system: ${welcomeMessage}` : ''}\n ${modOnlyMessage ? `system: ${modOnlyMessage}` : ''}\n`
+
   const text = messages.reduce((acc, message) => {
     const date = new Date(message.createdTime);
     const hour = date.getHours().toString().padStart(2, '0');
     const min = date.getMinutes().toString().padStart(2, '0');
     const hourMin = `[${hour}:${min}]`;
-    const userName = message.user.name;
-    const messageText = htmlDecode(message.message);
-    return `${acc}${hourMin} [${userName} : ${message.user.role}]: ${messageText}\n`;
-  },welcomeMessage? systemMessages : '');
+    const userName = message.user ? `[${message.user.name} : ${message.user.role}]: ` : '';
+    let messageText = '';
+
+    switch (message.messageType) {
+      case ChatMessageType.CHAT_CLEAR:
+        messageText = intl.formatMessage(intlMessages.chatClear);
+        break;
+      case ChatMessageType.TEXT:
+      default:
+        messageText = htmlDecode(message.message);
+        break;
+    }
+    return `${acc}${hourMin} ${userName}${messageText}\n`;
+  }, welcomeMessage ? systemMessages : '');
   return text;
 };
 
@@ -34,7 +53,5 @@ export const getDateString = (date = new Date()) => {
   return dateString;
 };
 
-
 // TODO: Make action using mutations
 export const clearPublicChatHistory = () => (makeCall('clearPublicChatHistory'));
-