using PizzeriaContracts.BindingModels;
using PizzeriaContracts.SearchModels;
using PizzeriaContracts.StoragesContracts;
using PizzeriaContracts.ViewModels;
using PizzeriaDatabaseImplement.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PizzeriaDatabaseImplement.Implements
{
	public class MessageInfoStorage : IMessageInfoStorage
	{
		public List<MessageInfoViewModel> GetFullList()
		{
			using var context = new PizzeriaDatabase();
			return context.MessageInfos.Select(x => x.GetViewModel).ToList();
		}
		public List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model)
		{
			if (!model.ClientId.HasValue && !model.PageLength.HasValue && !model.PageIndex.HasValue)
			{
				return new();
			}
			using var context = new PizzeriaDatabase();
			IEnumerable<MessageInfo> request = context.MessageInfos.Where(x => !x.IsReply);
			if (model.ClientId.HasValue)
				request = request.Where(x => x.ClientId.HasValue && x.ClientId == model.ClientId);
			if (model.PageLength.HasValue)
			{
				int skipRows = model.PageIndex.HasValue ? (model.PageIndex.Value - 1) * model.PageLength.Value : 0;
				request = request.Skip(skipRows).Take(model.PageLength.Value);
			}

			return request.Select(x => x.GetViewModel).ToList();
		}

		public MessageInfoViewModel? GetElement(MessageInfoSearchModel model)
		{
			if (string.IsNullOrEmpty(model.MessageId))
			{
				return new();
			}
			using var context = new PizzeriaDatabase();
			return context.MessageInfos.FirstOrDefault(x => x.MessageId == model.MessageId)?.GetViewModel;
		}
		public MessageInfoViewModel? Insert(MessageInfoBindingModel model)
		{
			var newMessage = MessageInfo.Create(model);
			if (newMessage == null)
			{
				return null;
			}
			using var context = new PizzeriaDatabase();
			try
			{
				context.MessageInfos.Add(newMessage);
				context.SaveChanges();
				return newMessage.GetViewModel;
			}
			catch (Exception ex)
			{
				return null;
			}
		}

		public MessageInfoViewModel? Update(MessageInfoBindingModel model)
		{
			using var context = new PizzeriaDatabase();
			var message = context.MessageInfos.FirstOrDefault(x => x.MessageId == model.MessageId);
			if (message == null)
			{
				return null;
			}
			message.Update(context, model);
			context.SaveChanges();
			return message.GetViewModel;
		}
	}
}