import { dataSource } from "../data-source";
import { permission } from "../entity/permission";
import InternalException from "../exceptions/internalException";
import UserService from "../service/userService";
import { CreatePermissionCommand, DeletePermissionCommand } from "./permissionCommand";

export default abstract class PermissionCommandHandler {
  /**
   * @description grant permission to user
   * @param CreatePermissionCommand
   * @returns {Promise<number>}
   */
  static async create(createPermission: CreatePermissionCommand): Promise<number> {
    return await dataSource
      .createQueryBuilder()
      .insert()
      .into(permission)
      .values({
        permission: createPermission.permission,
        user: await UserService.getById(createPermission.userId),
      })
      .execute()
      .then((result) => {
        return result.identifiers[0].id;
      })
      .catch((err) => {
        throw new InternalException("Failed saving permission");
      });
  }

  /**
   * @description remove permission to user
   * @param DeletePermissionCommand
   * @returns {Promise<any>}
   */
  static async deleteByToken(deletePermission: DeletePermissionCommand): Promise<any> {
    return await dataSource
      .createQueryBuilder()
      .delete()
      .from(permission)
      .where("permission.id = :id", { id: deletePermission.id })
      .execute()
      .then((res) => {})
      .catch((err) => {
        throw new InternalException("failed permission removal");
      });
  }
}