using TravelCompanyContracts.BindingModels;
using TravelCompanyContracts.SearchModels;
using TravelCompanyContracts.StoragesContracts;
using TravelCompanyContracts.ViewModels;
using TravelCompanyFileImplement.Models;

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

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

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

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

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

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