using Contracts.BindingModels;
using Contracts.SearchModels;
using Contracts.StoragesContracts;
using Contracts.ViewModels;
using FileImplements.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace FileImplements.Implements
{
	public class KeyStorage : IKeyStorage
	{
		private readonly DataFileSingleton source;
		public KeyStorage()
		{
			source = DataFileSingleton.GetInstance();
		}
		public List<KeyViewModel> GetFullList()
		{
			return source.Keys
				.Select(x => x.GetViewModel)
				.ToList();
		}
		public List<KeyViewModel> GetFilteredList(KeySearchModel model)
		{
			if (!string.IsNullOrEmpty(model.Name))
			{
				return source.Keys
					.Where(x => x.Name.Contains(model.Name))
					.Select(x => x.GetViewModel)
					.ToList();
			}
			return new();
		}
		public KeyViewModel? GetElement(KeySearchModel model)
		{
			if (model.Id.HasValue)
			{
				return source.Keys
					.FirstOrDefault(x => (x.Id == model.Id))?.GetViewModel;
			}
			else if (!string.IsNullOrEmpty(model.Name) && !string.IsNullOrEmpty(model.Path))
			{
				return source.Keys
					.FirstOrDefault(x => (x.Name == model.Name && x.Path == model.Path))?.GetViewModel;
			}
			return new();
		}
		public KeyViewModel? Insert(KeyBindingModel model)
		{
			model.Id = source.Keys.Count > 0 ? source.Keys.Max(x => x.Id) + 1 : 1;
			var newClient = Key.Create(model);
			if (newClient == null)
			{
				return null;
			}
			source.Keys.Add(newClient);
			source.SaveKeys();
			return newClient.GetViewModel;
		}
		public KeyViewModel? Update(KeyBindingModel model)
		{
			var client = source.Keys.FirstOrDefault(x => x.Id == model.Id);
			if (client == null)
			{
				return null;
			}
			client.Update(model);
			source.SaveKeys();
			return client.GetViewModel;
		}
		public KeyViewModel? Delete(KeyBindingModel model)
		{
			var client = source.Keys.FirstOrDefault(x => x.Id == model.Id);
			if (client != null)
			{
				source.Keys.Remove(client);
				source.SaveKeys();
				return client.GetViewModel;
			}
			return null;
		}
	}
}