using Microsoft.EntityFrameworkCore;
using Microsoft.IdentityModel.Tokens;
using PolyclinicContracts.BindingModels;
using PolyclinicContracts.SearchModels;
using PolyclinicContracts.StoragesContracts;
using PolyclinicContracts.ViewModels;
using PolyclinicDatabaseImplement.Models;
using SecuritySystemDatabaseImplement;

namespace PolyclinicDatabaseImplement.Implements
{
    public class ProcedureStorage : IProcedureStorage
    {
        public List<ProcedureViewModel> GetFullList()
        {
            using var database = new PolyclinicDatabase();
            return database.Procedures
                .Include(p => p.User)
                .Select(x => x.GetViewModel)
                .ToList();
        }

        public List<ProcedureViewModel> GetFilteredList(ProcedureSearchModel model)
        {
            var elements = GetFullList();
            if (model.Id != null)
            {
                elements = elements.Where(x => x.Id == model.Id.Value).ToList();
            }
            if (model.UserId != null)
            {
                elements = elements.Where(x => x.UserId == model.UserId.Value).ToList();
            }
            if (!model.Name.IsNullOrEmpty())
            {
                elements = elements.Where(x => x.Name == model.Name).ToList();
            }
            if (model.From != null)
            {
                elements = elements.Where(x => x.DateStartProcedure >= model.From.Value).ToList();
            }
            if (model.To != null)
            {
                elements = elements
                    .Where(x => x.DateStartProcedure <= model.To.Value)
                    .Where(x => x.DateStopProcedure != null)
                    .Where(x => x.DateStopProcedure <= model.To.Value)
                    .ToList();
            }
            return elements;
        }

        public ProcedureViewModel? GetElement(ProcedureSearchModel model)
        {
            return GetFilteredList(model).FirstOrDefault();
        }

        public ProcedureViewModel? Insert(ProcedureBindingModel model)
        {
            using var database = new PolyclinicDatabase();
            var newProcedure = Procedure.Create(model);
            if (newProcedure == null)
            {
                return null;
            }
            database.Procedures.Add(newProcedure);
            database.SaveChanges();
            return newProcedure.GetViewModel;
        }
        public ProcedureViewModel? Update(ProcedureBindingModel model)
        {
            using var database = new PolyclinicDatabase();
            var procedure = database.Procedures.FirstOrDefault(x => x.Id == model.Id);
            if (procedure == null)
            {
                return null;
            }
            procedure.Update(model);
            database.SaveChanges();
            return procedure.GetViewModel;
        }
        public ProcedureViewModel? Delete(ProcedureBindingModel model)
        {
            using var database = new PolyclinicDatabase();
            var element = database.Procedures
            .FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                database.Procedures.Remove(element);
                database.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }
    }
}