feat: Allow users to mark a conversation as unread (#5924)

Allow users to mark conversations as unread.
Loom video: https://www.loom.com/share/ab70552d3c9c48b685da7dfa64be8bb3

fixes: #5552

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/javascript/dashboard/store/modules/conversations/actions/messageReadActions.js

@@ -0,0 +1,35 @@
+import { throwErrorMessage } from 'dashboard/store/utils/api';
+import ConversationApi from '../../../../api/inbox/conversation';
+import mutationTypes from '../../../mutation-types';
+
+export default {
+  markMessagesRead: async ({ commit }, data) => {
+    try {
+      const {
+        data: { id, agent_last_seen_at: lastSeen },
+      } = await ConversationApi.markMessageRead(data);
+      setTimeout(
+        () =>
+          commit(mutationTypes.UPDATE_MESSAGE_UNREAD_COUNT, { id, lastSeen }),
+        4000
+      );
+    } catch (error) {
+      // Handle error
+    }
+  },
+
+  markMessagesUnread: async ({ commit }, { id }) => {
+    try {
+      const {
+        data: { agent_last_seen_at: lastSeen, unread_count: unreadCount },
+      } = await ConversationApi.markMessagesUnread({ id });
+      commit(mutationTypes.UPDATE_MESSAGE_UNREAD_COUNT, {
+        id,
+        lastSeen,
+        unreadCount,
+      });
+    } catch (error) {
+      throwErrorMessage(error);
+    }
+  },
+};