@Injectable()

export class SequelizeService {

  constructor(private sequelize: Sequelize) {}

​

  async transaction(operation: (transaction: Transaction) => Promise<any>, options?: TransactionOptions): Promise<any> {

    try {

      const transaction = await this.sequelize.transaction({ autocommit: false, ...options })

      try {

        const responseTransaction: Record<string, any> = await operation(transaction)

        await transaction.commit()

        return responseTransaction

      } catch (e: any) {

        await transaction.rollback()

        throw response(e)

      }

    } catch (e: any) {

      response(e)

      return null

    }

  }

​

  async findOneAndUpdate<T = any>(repository: Repository<Model<T, T>>, data: Optional<T, NullishPropertiesOf<T>>, options: FindOptions<T>): Promise<T> {

    try {

      let repositoryModel: Model<T, T> = await repository.findOne(options)

      if (!repositoryModel) return null

      repositoryModel = Object.assign(repositoryModel, { ...data })

      return (await repositoryModel.save(options))?.dataValues

    } catch (e: any) {

      response(e)

      return null

    }

  }

}

​