using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using RenovationWorkContracts.BindingModels;
using RenovationWorkContracts.SearchModels;
using RenovationWorkContracts.StoragesContracts;
using RenovationWorkContracts.ViewModels;
using RenovationWorkFileImplement.Models;
namespace RenovationWorkFileImplement.Implements
{
    public class RepairStorage : IRepairStorage
    {
        private readonly DataFileSingleton source;
        public RepairStorage()
        {
            source = DataFileSingleton.GetInstance();
        }
        public List<RepairViewModel> GetFullList()
        {
            return source.Repairs
            .Select(x => x.GetViewModel)
            .ToList();
        }

        public List<RepairViewModel> GetFilteredList(RepairSearchModel model)
        {
            if (string.IsNullOrEmpty(model.RepairName))
            {
                return new();
            }
            return source.Repairs
            .Where(x => x.RepairName.Contains(model.RepairName))
            .Select(x => x.GetViewModel)
            .ToList();
        }
        public RepairViewModel? GetElement(RepairSearchModel model)
        {
            if (string.IsNullOrEmpty(model.RepairName) && !model.Id.HasValue)
            {
                return null;
            }
            return source.Repairs
            .FirstOrDefault(x =>
            (!string.IsNullOrEmpty(model.RepairName) && x.RepairName ==
            model.RepairName) ||
            (model.Id.HasValue && x.Id == model.Id))
            ?.GetViewModel;
        }
        public RepairViewModel? Insert(RepairBindingModel model)
        {
            model.Id = source.Repairs.Count > 0 ? source.Repairs.Max(x =>
            x.Id) + 1 : 1;
            var newRepair = Repair.Create(model);
            if (newRepair == null)
            {
                return null;
            }
            source.Repairs.Add(newRepair);
            source.SaveRepairs();
            return newRepair.GetViewModel;
        }
        public RepairViewModel? Update(RepairBindingModel model)
        {
            var Repair = source.Repairs.FirstOrDefault(x => x.Id ==
            model.Id);
            if (Repair == null)
            {
                return null;
            }
            Repair.Update(model);
            source.SaveRepairs();
            return Repair.GetViewModel;
        }
        public RepairViewModel? Delete(RepairBindingModel model)
        {
            var Repair = source.Repairs.FirstOrDefault(x => x.Id ==
            model.Id);
            if (Repair != null)
            {
                source.Repairs.Remove(Repair);
                source.SaveRepairs();
                return Repair.GetViewModel;
            }
            return null;
        }
    }
}