using AttendanceApp.Data.Exceptions;
using AttendanceApp.Data.LocalData;
using AttendanceApp.Domain.Models;

namespace AttendanceApp.Data.Repository
{
    public class UserRepositoryImpl : IUserRepository
    {
        private readonly List<LocalUser> _users = LocalStaticData.Users;

        public IEnumerable<User> GetAllUsers()
        {
            return _users.Select(u => new User
            {
                Id = u.Id,
                FIO = u.FIO,
                GroupId = u.GroupID
            });
        }

        public User GetUserById(Guid id)
        {
            var localUser = _users.FirstOrDefault(u => u.Id == id);
            if (localUser == null)
                throw new UserNotFoundException($"Пользователь с ID {id} не найден.");

            return new User
            {
                Id = localUser.Id,
                FIO = localUser.FIO,
                GroupId = localUser.GroupID
            };
        }

        public void AddUser(User user)
        {
            _users.Add(new LocalUser
            {
                Id = user.Id,
                FIO = user.FIO,
                GroupID = user.GroupId
            });
        }

        public void UpdateUser(User user)
        {
            var localUser = _users.FirstOrDefault(u => u.Id == user.Id);
            if (localUser == null)
                throw new UserNotFoundException($"Пользователь с ID {user.Id} не найден.");

            localUser.FIO = user.FIO;
            localUser.GroupID = user.GroupId;
        }

        public void DeleteUser(Guid id)
        {
            var user = _users.FirstOrDefault(u => u.Id == id);
            if (user == null)
                throw new UserNotFoundException($"Пользователь с ID {id} не найден.");

            _users.Remove(user);
        }
    }
}