PIbd22_Kuznetsov_A.V._SewingDresses/SewingDresses/SewingDressesFileImplement/Implements/MessageInfoStorage.cs

using SewingDressesContracts.BindingModels;
using SewingDressesContracts.SearchModels;
using SewingDressesContracts.StoragesContracts;
using SewingDressesContracts.ViewModels;
using SewingDressesFileImplement.Models;


namespace SewingDressesFileImplement.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;
		}
	}
}