using Demo.Data.Entity;
using Demo.Data.RemoteData.RemoteDataBase;
using Demo.Data.RemoteData.RemoteDataBase.DAO;
using System.Collections.Generic;
using System.Linq;

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

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

        public bool AddUser(UserLocalEnity newUser)
        {
            var userDao = new UserDao
            {
                Guid = Guid.NewGuid(), 
                F10 = newUser.FIO, 
                GroupId = newUser.GroupID 
            };

            _remoteDatabaseContext.Users.Add(userDao);

            return _remoteDatabaseContext.SaveChanges() > 0;
        }


        public List<UserLocalEnity> GetAllUsers()
        {
            return _remoteDatabaseContext.Users
                .Select(user => new UserLocalEnity
                {
                    Guid = user.Guid,
                    FIO = user.F10,
                    GroupID = user.GroupId
                })
                .ToList();
        }

        public UserLocalEnity GetUserById(Guid userID)
        {
            var user = _remoteDatabaseContext.Users.Find(userID);

            if (user == null)
            {
                return null;
            }
            return new UserLocalEnity
            {
                Guid = user.Guid,
                GroupID = user.GroupId,
                FIO = user.F10
            };
        }



        public bool RemoveUserById(Guid userID)
        {
            var user = _remoteDatabaseContext.Users.Find(userID);

            if (user == null)
            {
                return false;
            }

            _remoteDatabaseContext.Users.Remove(user);
            _remoteDatabaseContext.SaveChanges();

            return true; 
        }


        public bool UpdateUserById(Guid userID, UserLocalEnity updatedUser)
        {
            var user = _remoteDatabaseContext.Users.Find(userID);

            if (user == null)
            {
                return false;
            }
            user.GroupId = updatedUser.GroupID;
            user.Guid = updatedUser.Guid;
            _remoteDatabaseContext.SaveChanges();

            return true; 
        }
    }
}