import numpy as np
import torch
from huggan.pytorch.lightweight_gan.lightweight_gan import LightweightGAN


def carga_modelo(model_name='ceyda/butterfly_croppe_uniq1K_512',model_version=None):
    gan = LightweightGAN.from_pretrained(model_name, vesion=model_version)
    gan.eval()
    return gan

def genera(gan, batch_size=1):
    with torch.no_grad():
        ims = gan.G(torch.randn(batch_size, gan.latent_dim).clamp_(0.0,1.0)*255)
        ims = ims.permute(0,2,3,1).detach().cpu().numpy().astype(np.uint8)
        return ims