using HospitalContracts.BindingModels;
using HospitalContracts.SearchModels;
using HospitalContracts.StoragesContracts;
using HospitalContracts.ViewModels;
using HospitalDataBaseImplements.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HospitalDataBaseImplements.Implements
{
    public class ProceduresStorage : IProceduresStorage
    {
        public List<ProceduresViewModel> GetFullList()
        {
            using var context = new HospitalDatabase();
            return context.Procedures
            .Select(x => x.GetViewModel)
           .ToList();
        }
        public List<ProceduresViewModel> GetFilteredList(ProceduresSearchModel model)
        {
            if (string.IsNullOrEmpty(model.ProceduresName))
            {
                return new();
            }
            using var context = new HospitalDatabase();
            return context.Procedures
            .Where(x => x.ProceduresName.Contains(model.ProceduresName))
           .Select(x => x.GetViewModel)
           .ToList();
        }
        public ProceduresViewModel? GetElement(ProceduresSearchModel model)
        {
            if (string.IsNullOrEmpty(model.ProceduresName) && !model.Id.HasValue)
            {
                return null;
            }
            using var context = new HospitalDatabase();
            return context.Procedures
            .FirstOrDefault(x =>
           (!string.IsNullOrEmpty(model.ProceduresName) && x.ProceduresName ==
           model.ProceduresName) ||
            (model.Id.HasValue && x.Id == model.Id))
            ?.GetViewModel;
        }
        public ProceduresViewModel? Insert(ProceduresBindingModel model)
        {
            var newProcedures = Procedures.Create(model);
            if (newProcedures == null)
            {
                return null;
            }
            using var context = new HospitalDatabase();
            context.Procedures.Add(newProcedures);
            context.SaveChanges();
            return newProcedures.GetViewModel;
        }
        public ProceduresViewModel? Update(ProceduresBindingModel model)
        {
            using var context = new HospitalDatabase();
            var procedure = context.Procedures.FirstOrDefault(x => x.Id == model.Id);
            if (procedure == null)
            {
                return null;
            }
            procedure.Update(model);
            context.SaveChanges();
            return procedure.GetViewModel;
        }
        public ProceduresViewModel? Delete(ProceduresBindingModel model)
        {
            using var context = new HospitalDatabase();
            var element = context.Procedures.FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                context.Procedures.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }
    }
}