PIbd-23-Volkov-N.A.-ComputersShop/ComputersShop/ComputersShopDataBaseImplement/Implements/MessageInfoStorage.cs

using ComputersShopContracts.BindingModels;
using ComputersShopContracts.SearchModels;
using ComputersShopContracts.StoragesContracts;
using ComputersShopContracts.ViewModels;
using ComputersShopDataBaseImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ComputersShopDataBaseImplement.Implements
{
    public class MessageInfoStorage : IMessageInfoStorage
    {
        public MessageInfoViewModel? GetElement(MessageInfoSearchModel model)
        {
            if (string.IsNullOrEmpty(model.MessageId))
            {
                return null;
            }
            using var context = new ComputersShopDataBase();
            return context.Messages
             .FirstOrDefault(x => x.MessageId == model.MessageId)?
            .GetViewModel;
        }

        public List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model)
        {
            if (!model.ClientId.HasValue)
                return new();
            using var context = new ComputersShopDataBase();
            return context.Messages
                .Where(x => x.ClientId == model.ClientId)
                .Select(x => x.GetViewModel)
                .ToList();
        }

        public List<MessageInfoViewModel> GetFullList()
        {
            using var context = new ComputersShopDataBase();
            return context.Messages
            .Select(x => x.GetViewModel)
            .ToList();
        }

        public MessageInfoViewModel? Insert(MessageInfoBindingModel model)
        {
            using var context = new ComputersShopDataBase();
            var newMessage = Message.Create(model);
            if (newMessage == null)
            {
                return null;
            }
            context.Messages.Add(newMessage);
            context.SaveChanges();
            return newMessage.GetViewModel;
        }
    }
}