using GiftShopContracts.BindingModels;
using GiftShopContracts.SearchModels;
using GiftShopContracts.StoragesContracts;
using GiftShopContracts.ViewModels;
using GiftShopFileImplement.Models;

namespace GiftShopFileImplement.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 == model.MessageId)?.GetViewModel;
		}

		public List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model)
		{
			if (string.IsNullOrEmpty(model.MessageId))
			{
				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 = Message.Create(model);
			if (newMessage == null)
			{
				return null;
			}
			source.Messages.Add(newMessage);
			source.SaveMessages();
			return newMessage.GetViewModel;
		}
	}
}