user-service.ts

import SomethingWrongException from '../utils/exceptions/base/somethingwrongexception';
import { UserInfoDTO } from '../dtos/user-info-dto';
import CustomException from '../utils/exceptions/customexception';
import DatabaseService from './db-service';

class UserService {

    private dbService: DatabaseService;

    constructor() {
        this.dbService = new DatabaseService();
    }    

    public getUserInfo(): POSInfoDTO {
        try {
            const result: POSInfoDTO[] = this.dbService.readAllUserInfo();
            if (result?.length > 0 ) {
                return result[0];
            }
            return null;
        } catch (err) {
            throw new SomethingWrongException(err);
        }
    }

    public saveUserInfo(info: POSInfoDTO): boolean {
        try {
            if (info.uid > 0) {
                const existingInfo = this.getUserInfo();
                if (existingInfo) {
                    info.id = existingInfo.id;
                    this.dbService.updateUserInfo(info);
                } else {
                    this.dbService.saveUserInfo(info);
                }
                return true;
            } else {
                throw new CustomException('User UID cannot be empty', 200);
            }
        } catch (err) {
            throw new SomethingWrongException(err);
        }
    }
}

export default UserService;