using Abp.Dependency;
using Abp.Domain.Repositories;
using Abp.Domain.Uow;
using Abp.Events.Bus.Entities;
using Abp.Events.Bus.Handlers;

using VberZero.BaseSystem.Users;

namespace VberZero.Authorization.Users;

/// <summary>
/// Removes the user from all user roles when a user is deleted.
/// </summary>
public class UserRoleRemover :
    IEventHandler<EntityDeletedEventData<User>>,
    ITransientDependency
{
    private readonly IRepository<UserRole, long> _userRoleRepository;
    private readonly IUnitOfWorkManager _unitOfWorkManager;

    public UserRoleRemover(
        IUnitOfWorkManager unitOfWorkManager,
        IRepository<UserRole, long> userRoleRepository)
    {
        _unitOfWorkManager = unitOfWorkManager;
        _userRoleRepository = userRoleRepository;
    }

    public virtual void HandleEvent(EntityDeletedEventData<User> eventData)
    {
        _unitOfWorkManager.WithUnitOfWork(() =>
        {
            using (_unitOfWorkManager.Current.SetTenantId(eventData.Entity.TenantId))
            {
                _userRoleRepository.Delete(
                    ur => ur.UserId == eventData.Entity.Id
                );
            }
        });
    }
}