using System;
using System.Collections.Generic;
using System.Linq;
using Zurnal.Data.Repository;
using Zurnal.domain.Models;
using Zurnal.RemaDateBase.DateDao;

namespace Zurnal.Date.Repository.SQLRepos
{
    public class SQLUserRepositoryImpl : IUserRepository
    {
        private readonly RemoteDateBaseContext _remoteDataBaseContext;

        public SQLUserRepositoryImpl(RemoteDateBaseContext remoteDataBaseContext) 
        {
            _remoteDataBaseContext = remoteDataBaseContext;
        }

        public List<UserDao> GetAllUsers => 
            _remoteDataBaseContext.User.Select(user => new UserDao 
            {
                UserGuid = user.UserGuid,
                FIO = user.FIO,
                GroupID = user.GroupID,
            }).ToList();

        public bool RemoveUserByGuid(Guid userGuid)
        {
            var user = _remoteDataBaseContext.User.Find(userGuid);
            if (user == null) return false;

            _remoteDataBaseContext.User.Remove(user);
            _remoteDataBaseContext.SaveChanges();
            return true;
        }

        public UserDao? GetUserByGuid(Guid userGuid)
        {
            var user = _remoteDataBaseContext.User.Find(userGuid);
            if (user == null) return null;

            return new UserDao 
            {
                UserGuid = user.UserGuid,
                FIO = user.FIO,
                GroupID = user.GroupID,
            };
        }

        public UserDao? UpdateUser(UserDao userUpdateLocalEnity)
        {
            var user = _remoteDataBaseContext.User.Find(userUpdateLocalEnity.UserGuid);
            if (user == null) return null;

            user.FIO = userUpdateLocalEnity.FIO;
            user.GroupID = userUpdateLocalEnity.GroupID;
            _remoteDataBaseContext.SaveChanges();
            return userUpdateLocalEnity;
        }
    }
}