import {NextFunction, Request, Response} from "express";
import {Error, ErrorCodes} from "../../../common/entities/Error";
import {UserRoles} from "../../../common/entities/UserDTO";
import {ObjectManagerRepository} from "../../model/ObjectManagerRepository";

export class UserRequestConstrainsMWs {

  public static forceSelfRequest(req: Request, res: Response, next: NextFunction) {
    if ((typeof req.params === 'undefined') || (typeof req.params.id === 'undefined')) {
      return next();
    }
    if (req.session.user.id !== req.params.id) {
      return next(new Error(ErrorCodes.NOT_AUTHORISED));
    }

    return next();
  }


  public static notSelfRequest(req: Request, res: Response, next: NextFunction) {
    if ((typeof req.params === 'undefined') || (typeof req.params.id === 'undefined')) {
      return next();
    }

    if (req.session.user.id === req.params.id) {
      return next(new Error(ErrorCodes.NOT_AUTHORISED));
    }

    return next();
  }

  public static async notSelfRequestOr2Admins(req: Request, res: Response, next: NextFunction) {
    if ((typeof req.params === 'undefined') || (typeof req.params.id === 'undefined')) {
      return next();
    }

    if (req.session.user.id !== req.params.id) {
      return next();
    }

    //TODO: fix it!
    try {
      const result = await ObjectManagerRepository.getInstance().UserManager.find({minRole: UserRoles.Admin});
      if (result.length <= 1) {
        return next(new Error(ErrorCodes.GENERAL_ERROR));
      }
      return next();

    } catch (err) {
      return next(new Error(ErrorCodes.GENERAL_ERROR));
    }

  }


}