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

def carga_modelo(modelo_name ="ceyda/butterfly_cropped_uniq1K_512", model_version =None):
    gan = LightweightGAN.from_pretrained(modelo_name, version =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