import { DataSource } from 'typeorm';
import { MessageEntity } from '../../../entities';
import { UpdateMessageCommand } from '../../types';

export async function handleUpdateMessage(command: UpdateMessageCommand, dataSource: DataSource): Promise<void> {
  const repo = dataSource.getRepository(MessageEntity);
  const { messageId, updates } = command.payload;
  const existing = await repo.findOne({ where: { id: messageId } });

  if (!existing)
    return;

  if (updates.channelId !== undefined)
    existing.channelId = updates.channelId ?? null;

  if (updates.senderId !== undefined)
    existing.senderId = updates.senderId;

  if (updates.senderName !== undefined)
    existing.senderName = updates.senderName;

  if (updates.content !== undefined)
    existing.content = updates.content;

  if (updates.timestamp !== undefined)
    existing.timestamp = updates.timestamp;

  if (updates.editedAt !== undefined)
    existing.editedAt = updates.editedAt ?? null;

  if (updates.reactions !== undefined)
    existing.reactions = JSON.stringify(updates.reactions ?? []);

  if (updates.isDeleted !== undefined)
    existing.isDeleted = updates.isDeleted ? 1 : 0;

  if (updates.replyToId !== undefined)
    existing.replyToId = updates.replyToId ?? null;

  await repo.save(existing);
}