RestaurantSite_API/ProRestaurant/Repository/Accounts/IUserRepository.cs

using ProRestaurant.DBContexts;
using ProRestaurant.Models.Accounts;
using System;
using System.Collections.Generic;
using System.Linq;

namespace ProRestaurant.Repository.Accounts
{
    public interface IUserRepository
    {
        ICollection<User> Get(Func<User, bool> where);
        User GetUser(int UserId);
        UserAddress GetUserAddress(int UserId);
        void Update(User user);
        void Save();
    }

    public class UserRepository : IUserRepository
    {
        private readonly DBContext dbContext;

        public UserRepository(DBContext _db)
        {
            dbContext = _db;
        }

        public ICollection<User> Get(Func<User, bool> where)
        {
            return dbContext.Users.Where(where).ToList();
        }

        public User GetUser(int UserId)
        {            
            return dbContext.Users.Where(u => u.Id == UserId).FirstOrDefault();
        }

        public UserAddress GetUserAddress(int UserId)
        {
            var address = dbContext.UserAddresses.Where(a => a.UserId == UserId).FirstOrDefault();
            return address;
        }

        public void Save()
        {
            dbContext.SaveChanges();
        }

        public void Update(User user)
        {
            if (user.Addresses != null && user.Addresses.Count > 0)
            {
                foreach(var address in user.Addresses)
                {
                    if (address.Id == 0)
                    {
                        dbContext.Add(address);
                        Save();
                    }
                }
            }

            dbContext.Entry(user).State = Microsoft.EntityFrameworkCore.EntityState.Modified;
            Save();
        }
    }
}