import { DataSource } from 'typeorm';
import { RoomEntity } from '../../../entities';
import { UpdateRoomCommand } from '../../types';
import {
  applyUpdates,
  boolToInt,
  jsonOrNull,
  TransformMap
} from './utils/applyUpdates';

const ROOM_TRANSFORMS: TransformMap = {
  isPrivate: boolToInt,
  userCount: (val) => (val ?? 0),
  permissions: jsonOrNull,
  channels: jsonOrNull
};

export async function handleUpdateRoom(command: UpdateRoomCommand, dataSource: DataSource): Promise<void> {
  const repo = dataSource.getRepository(RoomEntity);
  const { roomId, updates } = command.payload;
  const existing = await repo.findOne({ where: { id: roomId } });

  if (!existing)
    return;

  applyUpdates(existing, updates, ROOM_TRANSFORMS);
  await repo.save(existing);
}