Refacor electron app and add migrations

electron/cqrs/commands/handlers/saveMessage.ts

@@ -0,0 +1,24 @@
+import { DataSource } from 'typeorm';
+import { MessageEntity } from '../../../entities';
+import { SaveMessageCommand } from '../../types';
+
+export async function handleSaveMessage(command: SaveMessageCommand, dataSource: DataSource): Promise<void> {
+  const repo = dataSource.getRepository(MessageEntity);
+  const { message } = command.payload;
+
+  const entity = repo.create({
+    id: message.id,
+    roomId: message.roomId,
+    channelId: message.channelId ?? null,
+    senderId: message.senderId,
+    senderName: message.senderName,
+    content: message.content,
+    timestamp: message.timestamp,
+    editedAt: message.editedAt ?? null,
+    reactions: JSON.stringify(message.reactions ?? []),
+    isDeleted: message.isDeleted ? 1 : 0,
+    replyToId: message.replyToId ?? null,
+  });
+
+  await repo.save(entity);
+}