using LawFirmContracts.BindingModels;
using LawFirmContracts.SearchModels;
using LawFirmContracts.StorageContracts;
using LawFirmContracts.ViewModels;
using LawFirmDatabaseImplement.Models;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace LawFirmDatabaseImplement.Implements
{
    public class BlankStorage : IBlankStorage
    {
        public BlankViewModel? GetElement(BlankSearchModel model)
        {
            if (string.IsNullOrEmpty(model.BlankName) && !model.Id.HasValue)
            {
                return null;
            }
            using var context = new LawFirmDatabase();
            return context.Blanks.FirstOrDefault(x => 
            (!string.IsNullOrEmpty(model.BlankName) && x.BlankName == model.BlankName) 
            || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;

        }

        public List<BlankViewModel> GetFilteredList(BlankSearchModel model)
        {
            if (string.IsNullOrEmpty(model.BlankName))
            {
                return new();
            }
            using var context = new LawFirmDatabase();
            return context.Blanks
            .Where(x => x.BlankName.Contains(model.BlankName))
            .Select(x => x.GetViewModel)
            .ToList();

        }

        public List<BlankViewModel> GetFullList()
        {
            using var context = new LawFirmDatabase();
            return context.Blanks.Select(x => x.GetViewModel).ToList();
        }

        public BlankViewModel? Insert(BlankBindingModel model)
        {
            var newBlank = Blank.Create(model);
            if (newBlank == null)
            {
                return null;
            }
            using var context = new LawFirmDatabase();
            context.Blanks.Add(newBlank);
            context.SaveChanges();
            return newBlank.GetViewModel;

        }

        public BlankViewModel? Update(BlankBindingModel model)
        {
            using var context = new LawFirmDatabase();
            var blank = context.Blanks.FirstOrDefault(x => x.Id == model.Id);
            if (blank == null)
            {
                return null;
            }
            blank.Update(model);
            context.SaveChanges();
            return blank.GetViewModel;
        }
        public BlankViewModel? Delete(BlankBindingModel model)
        {
            using var context = new LawFirmDatabase();
            var element = context.Blanks.FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                context.Blanks.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;

        }

    }
}