using Microsoft.IdentityModel.Tokens;
using PolyclinicContracts.BindingModels;
using PolyclinicContracts.SearchModels;
using PolyclinicContracts.StoragesContracts;
using PolyclinicContracts.ViewModels;
using PolyclinicDatabaseImplement.Models;
using SecuritySystemDatabaseImplement;

namespace PolyclinicDatabaseImplement.Implements
{
    public class UserStorage : IUserStorage
    {
        public UserViewModel? Delete(UserBindingModel model)
        {
            using var context = new PolyclinicDatabase();
            var element = context.Users.FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                context.Users.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }

        public UserViewModel? GetElement(UserSearchModel model)
        {
            return GetFilteredList(model).FirstOrDefault();
        }

        public List<UserViewModel> GetFilteredList(UserSearchModel model)
        {
            var elements = GetFullList();
            if (model.Id != null)
            {
                elements = elements.Where(x => x.Id == model.Id).ToList();
            }
            if (!model.Email.IsNullOrEmpty())
            {
                elements = elements.Where(x => x.Email == model.Email).ToList();

            }
            if (!model.Password.IsNullOrEmpty())
            {
                elements = elements.Where(x => x.Password == model.Password).ToList();

            }
            return elements;
        }

        public List<UserViewModel> GetFullList()
        {
            using var context = new PolyclinicDatabase();
            return context.Users.Select(x => x.GetViewModel).ToList();
        }

        public UserViewModel? Insert(UserBindingModel model)
        {
            var element = User.Create(model);
            if (element == null)
            {
                return null;
            }
            using var context = new PolyclinicDatabase();
            context.Users.Add(element);
            context.SaveChanges();
            return element.GetViewModel;
        }

        public UserViewModel? Update(UserBindingModel model)
        {
            using var context = new PolyclinicDatabase();
            var element = context.Users.FirstOrDefault(x => x.Id == model.Id);
            if (element == null)
            {
                return null;
            }
            element.Update(model);
            context.SaveChanges();
            return element.GetViewModel;
        }
    }
}