namespace DocuMed.Repository.Handlers.Patients;

public class GetPatientsQueryHandler(IRepositoryWrapper repositoryWrapper,UserManager<ApplicationUser> userManager) : IRequestHandler<GetPatientsQuery,List<PatientSDto>>
{
    public async Task<List<PatientSDto>> Handle(GetPatientsQuery request, CancellationToken cancellationToken)
    {
        var count = request.Count;
        if(count > Refers.MaxSize)
            count = Refers.SizeM;
        var query = repositoryWrapper.SetRepository<Patient>()
            .TableNoTracking;

        if (!string.IsNullOrEmpty(request.SearchName))
        {

        }
        if(!string.IsNullOrEmpty(request.NationalId))
        {
            query = from users in userManager.Users
                    join patients in query on users.Id equals patients.UserId
                    where users.NationalId == request.NationalId
                    select patients;
        }

        var result = await query
            .OrderByDescending(x => x.CreatedAt)
            .Skip(request.Page * count)
            .Take(count)
            .Select(PatientMapper.ProjectToSDto)
            .ToListAsync(cancellationToken);

        return result;
    }
}