PIbd-23-Lisov-N.A-SewingDresses/DressAtelierFileImplement/Implements/MessageInfoStorage.cs

using DressAtelierContracts.BindingModels;
using DressAtelierContracts.SearchModels;
using DressAtelierContracts.StorageContracts;
using DressAtelierContracts.ViewModels;
using DressAtelierFileImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace DressAtelierFileImplement.Implements
{
    public class MessageInfoStorage : IMessageInfoStorage
    {
        private readonly DataFileSingleton _source;

        public MessageInfoStorage()
        {
            _source = DataFileSingleton.GetInstance();
        }

        public MessageInfoViewModel? GetElement(MessageInfoSearchModel model)
        {
            if(string.IsNullOrEmpty(model.MessageID))
            {
                return null;
            }
            return _source.Messages.FirstOrDefault(x => x.MessageID.Equals(model.MessageID))?.GetViewModel;
        }

        public List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model)
        {
            if (!model.ClientID.HasValue)
            {
                return new();
            }
            return _source.Messages.Where(x => x.ClientID == model.ClientID).Select(x => x.GetViewModel).ToList();
        }

        public List<MessageInfoViewModel> GetFullList()
        {
            return _source.Messages.Select(x => x.GetViewModel).ToList();
        }

        public MessageInfoViewModel? Insert(MessageInfoBindingModel model)
        {
            var newMessage = MessageInfo.Create(model);
            if(newMessage == null)
            {
                return null;
            }
            _source.Messages.Add(newMessage);
            _source.SaveMessages();
            return newMessage.GetViewModel;
        }
    }
}