using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TypographyContracts.BindingModels;
using TypographyContracts.SearchModels;
using TypographyContracts.StoragesContracts;
using TypographyContracts.ViewModels;
using TypographyFileImplement.Models;


namespace TypographyFileImplement.Implements
{
    public class PrintedStorage : IPrintedStorage
    {
        private readonly DataFileSingleton source;
        public PrintedStorage()
        {
            source = DataFileSingleton.GetInstance();
        }

        public List<PrintedViewModel> GetFullList()
        {
            return source.Printeds.Select(x => x.GetViewModel).ToList();
        }

        public List<PrintedViewModel> GetFilteredList(PrintedSearchModel model)
        {
            if (string.IsNullOrEmpty(model.PrintedName))
            {
                return new();
            }
            return source.Printeds.Where(x => x.PrintedName.Contains(model.PrintedName)).Select(x => x.GetViewModel).ToList();
        }

        public PrintedViewModel? GetElement(PrintedSearchModel model)
        {
            if (string.IsNullOrEmpty(model.PrintedName) && !model.Id.HasValue)
            {
                return null;
            }
            return source.Printeds.FirstOrDefault(x => (!string.IsNullOrEmpty(model.PrintedName) &&
            x.PrintedName == model.PrintedName) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
        }

        public PrintedViewModel? Insert(PrintedBindingModel model)
        {
            model.Id = source.Printeds.Count > 0 ? source.Printeds.Max(x => x.Id) + 1 : 1;
            var newPrinted = Printed.Create(model);
            if (newPrinted == null)
            {
                return null;
            }
            source.Printeds.Add(newPrinted);
            source.SavePrinteds();
            return newPrinted.GetViewModel;
        }
        public PrintedViewModel? Update(PrintedBindingModel model)
        {
            var printed = source.Printeds.FirstOrDefault(x => x.Id == model.Id);
            if (printed == null)
            {
                return null;
            }
            printed.Update(model);
            source.SavePrinteds();
            return printed.GetViewModel;
        }
        public PrintedViewModel? Delete(PrintedBindingModel model)
        {
            var element = source.Printeds.FirstOrDefault(x => x.Id == model.Id);
            if (element != null)
            {
                source.Printeds.Remove(element);
                source.SavePrinteds();
                return element.GetViewModel;
            }
            return null;
        }
    }
}