using PortalAccountsContracts.BindingModels;
using PortalAccountsContracts.SearchModels;
using PortalAccountsContracts.StoragesContracts;
using PortalAccountsContracts.ViewModels;
using PortalAccountsDatabaseImplement.Models;

namespace PortalAccountsDatabaseImplement.Implements
{
    public class RoleStorage : IRoleStorage
    {
        public List<RoleViewModel> GetFullList()
        {
            using var context = new PortalAccountsDatabase();
            return context.Roles
                    .Select(x => x.GetViewModel)
                    .ToList();
        }

        public List<RoleViewModel> GetFilteredList(RoleSearchModel model)
        {
            if (string.IsNullOrEmpty(model.Name))
            {
                return new();
            }
            using var context = new PortalAccountsDatabase();
            return context.Roles
                    .Where(x => x.Name.Contains(model.Name))
                    .Select(x => x.GetViewModel)
                    .ToList();
        }

        public RoleViewModel? GetElement(RoleSearchModel model)
        {
            if (string.IsNullOrEmpty(model.Name) && !model.Id.HasValue)
            {
                return null;
            }
            using var context = new PortalAccountsDatabase();
            return context.Roles
                    .FirstOrDefault(x => !string.IsNullOrEmpty(model.Name) && x.Name == model.Name ||
                                    model.Id.HasValue && x.Id == model.Id)
                    ?.GetViewModel;
        }

        public RoleViewModel? Insert(RoleBindingModel model)
        {
            var newRole = Role.Create(model);
            if (newRole == null)
            {
                return null;
            }
            using var context = new PortalAccountsDatabase();
            context.Roles.Add(newRole);
            context.SaveChanges();
            return newRole.GetViewModel;
        }

        public RoleViewModel? Update(RoleBindingModel model)
        {
            using var context = new PortalAccountsDatabase();
            var role = context.Roles.FirstOrDefault(x => x.Id == model.Id);
            if (role == null)
            {
                return null;
            }
            role.Update(model);
            context.SaveChanges();
            return role.GetViewModel;
        }

        public RoleViewModel? Delete(RoleBindingModel model)
        {
            using var context = new PortalAccountsDatabase();
            var element = context.Roles.FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                context.Roles.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }
    }
}