presence/Demo/Data/Repository/SQLUserRepositoryImpl.cs

using Demo.Data.Exceptions;
using Demo.Data.RemoteData.RemoteDataBase;
using Demo.Data.RemoteData.RemoteDataBase.DAO;
using Demo.domain.Models;
using Microsoft.EntityFrameworkCore;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Demo.Data.Repository
{
    public class SQLUserRepositoryImpl : IUserRepository
    {
        private readonly RemoteDatabaseContext _remoteDatabaseContext;

        public SQLUserRepositoryImpl(RemoteDatabaseContext remoteDatabaseContext)
        {
            _remoteDatabaseContext = remoteDatabaseContext;
        }

        public IEnumerable<UserDao> GetAllUsers => _remoteDatabaseContext.Users;

        public bool RemoveUserById(int userId)
        {
            var user = _remoteDatabaseContext.Users.FirstOrDefault(u => u.UserId == userId);
            if (user == null) throw new UserNotFoundException(userId);

            _remoteDatabaseContext.Users.Remove(user);
            return true;
        }

        public UserDao? UpdateUser(UserDao user)
        {
            var existingUser = _remoteDatabaseContext.Users.FirstOrDefault(u => u.UserId == user.UserId);
            if (existingUser == null) throw new UserNotFoundException(user.UserId);

            existingUser.FIO = user.FIO;
            existingUser.GroupId = user.GroupId;

            return existingUser;
        }
    }
}