Fixing the issue with complete deletion from the database

apps/api/src/conversations/conversations.service.ts

@@ -443,6 +443,9 @@ export class ConversationsService {
     let preview = lastMsg
       ? String(lastMsg.content ?? lastMsg.text ?? lastMsg.body ?? '').trim()
       : '';
+    if (/^__MENTO_HIDE__:/i.test(preview) || /MENTO_DEL/i.test(preview)) {
+      preview = '';
+    }
     if (lastType === 'image' || lastType === 'photo' || lastType === 'img') {
       if (/(?:^|[\\/._-])vid-\d+/i.test(preview) || /\.(mp4|mov|m4v|mkv|avi|3gp)(?:\?|$)/i.test(preview)) {
         preview = 'ویدیو';
@@ -490,4 +493,54 @@ export class ConversationsService {
       peerUserId,
     };
   }
+
+  async hideMessages(
+    userId: string,
+    organizationId: string,
+    role: string,
+    externalRoomId: string,
+    messageIds: string[],
+  ): Promise<{ messageIds: string[] }> {
+    await this.loadAccess(userId, organizationId, role);
+    const roomId = externalRoomId.trim();
+    if (!roomId) throw new BadRequestException('شناسه اتاق خالی است');
+    const ids = [
+      ...new Set(
+        messageIds
+          .map((id) => String(id || '').trim())
+          .filter((id) => id.length > 0 && id.length <= 200),
+      ),
+    ].slice(0, 100);
+    if (!ids.length) throw new BadRequestException('شناسه پیام خالی است');
+
+    await this.prisma.conversationHiddenMessage.createMany({
+      data: ids.map((messageId) => ({
+        organizationId,
+        externalRoomId: roomId,
+        messageId,
+        hiddenByUserId: userId,
+      })),
+      skipDuplicates: true,
+    });
+
+    return { messageIds: ids };
+  }
+
+  async listHiddenMessageIds(
+    userId: string,
+    organizationId: string,
+    role: string,
+    externalRoomId: string,
+  ): Promise<{ messageIds: string[] }> {
+    await this.loadAccess(userId, organizationId, role);
+    const roomId = externalRoomId.trim();
+    if (!roomId) throw new BadRequestException('شناسه اتاق خالی است');
+
+    const rows = await this.prisma.conversationHiddenMessage.findMany({
+      where: { organizationId, externalRoomId: roomId },
+      select: { messageId: true },
+      take: 5000,
+    });
+    return { messageIds: rows.map((r) => r.messageId) };
+  }
 }