import { dataSource } from "../data-source";
import { communication } from "../entity/communication";
import InternalException from "../exceptions/internalException";

export default abstract class CommunicationService {
  /**
   * @description get communications by user
   * @returns {Promise<Array<communication>>}
   */
  static async getById(userId: number): Promise<communication> {
    return await dataSource
      .getRepository(communication)
      .createQueryBuilder("communication")
      .leftJoin("communication.user", "user")
      .andWhere("user.id = :id", { id: userId })
      .getOneOrFail()
      .then((res) => {
        return res;
      })
      .catch(() => {
        throw new InternalException("communications not found by userid");
      });
  }

  /**
   * @description get available columns for self made com type
   * @returns {Array<string>}
   */
  static getAvailableColumnsForCommunication(): Array<string> {
    let metadata = dataSource.getMetadata(communication);
    return metadata.columns.map((c) => c.propertyName);
  }
}