import os
import torch
import gradio as gr
import numpy as np
import random
from huggingface_hub import AsyncInferenceClient
from translatepy import Translator
import requests
import re
import asyncio
from PIL import Image
from gradio_client import Client, handle_file
from huggingface_hub import login
from gradio_imageslider import ImageSlider

MAX_SEED = np.iinfo(np.int32).max
HF_TOKEN = os.environ.get("HF_TOKEN")
HF_TOKEN_UPSCALER = os.environ.get("HF_TOKEN_UPSCALER")

if not os.path.exists('GFPGANv1.4.pth'): os.system("wget https://github.com/TencentARC/GFPGAN/releases/download/v1.3.0/GFPGANv1.4.pth -P .")

device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')
model_path = 'GFPGANv1.4.pth'
gfpgan = GFPGANer(model_path=model_path, upscale_factor=4, arch='clean', channel_multiplier=2, model_name='GPFGAN', device=device)

async def generate_image(prompt, model, lora_word, width, height, scales, steps, seed):
	try: 
		if seed == -1: seed = random.randint(0, MAX_SEED); seed = int(seed)
		text = str(Translator().translate(prompt, 'English')) + "," + lora_word
		client = AsyncInferenceClient()
		image = await client.text_to_image(prompt=text, height=height, width=width, guidance_scale=scales, num_inference_steps=steps, model=model)
		return image, seed
	except Exception as e: print(f"Error generating image: {e}"); return None, None

def get_upscale_gfpgan(prompt, img_path):
	try: return gfpgan.enhance(img_path)
	except Exception as e: print(f"Error upscale image: {e}"); return None

def get_upscale_finegrain(prompt, img_path, upscale_factor):
	try: 
		client = Client("finegrain/finegrain-image-enhancer", hf_token=HF_TOKEN_UPSCALER)
		result = client.predict(input_image=handle_file(img_path), prompt=prompt, negative_prompt="", seed=42, upscale_factor=upscale_factor, controlnet_scale=0.6, controlnet_decay=1, condition_scale=6, tile_width=112, tile_height=144, denoise_strength=0.35, num_inference_steps=18, solver="DDIM", api_name="/process")
		return result[1]
	except Exception as e: print(f"Error upscale image: {e}"); return None

async def gen(prompt, basemodel, width, height, scales, steps, seed, upscale_factor, process_upscale, lora_model, process_lora, upscale_model):
	model = enable_lora(lora_model, basemodel) if process_lora else basemodel
	image, seed = await generate_image(prompt, model, "", width, height, scales, steps, seed)
	if image is None: return [None, None]
	image_path = "temp_image.jpg"; image.save(image_path, format="JPEG")
	if process_upscale:
		if upscale_model == "GPFGAN": upscale_image = get_upscale_gfpgan(prompt, image_path)
		elif upscale_model == "Finegrain": upscale_image = get_upscale_finegrain(prompt, image_path, upscale_factor)
		upscale_image_path = "upscale_image.jpg"; upscale_image.save(upscale_image_path, format="JPEG")
		return [image_path, upscale_image_path]
	else: return [image_path, image_path]

css = """#col-container{ margin: 0 auto; max-width: 1024px;}"""
with gr.Blocks(css=css, theme="Nymbo/Nymbo_Theme") as demo:
	with gr.Column(elem_id="col-container"):
		with gr.Row():
			with gr.Column(scale=3): output_res = ImageSlider(label="Flux / Upscaled")
			with gr.Column(scale=2): 
				prompt = gr.Textbox(label="Descripción de imágen")
				basemodel_choice = gr.Dropdown(label="Modelo", choices=["black-forest-labs/FLUX.1-schnell", "black-forest-labs/FLUX.1-DEV"], value="black-forest-labs/FLUX.1-schnell")
				lora_model_choice = gr.Dropdown(label="LORA Realismo", choices=["Shakker-Labs/FLUX.1-dev-LoRA-add-details", "XLabs-AI/flux-RealismLora"], value="XLabs-AI/flux-RealismLora")
                process_lora = gr.Checkbox(label="Procesar LORA")
                process_upscale = gr.Checkbox(label="Procesar Escalador")
                upscale_factor = gr.Radio(label="Factor de Escala", choices=[2, 4, 8], value=2)
                upscale_model = gr.Radio(label="Modelo de Escalado", choices=["GPFGAN", "Finegrain"], value="GPFGAN")
                
                with gr.Accordion(label="Opciones Avanzadas", open=False):
					width = gr.Slider(label="Ancho", minimum=512, maximum=1280, step=8, value=512)
					height = gr.Slider(label="Alto", minimum=512, maximum=1280, step=8, value=512)
					scales = gr.Slider(label="Escalado", minimum=1, maximum=20, step=1, value=10)
					steps = gr.Slider(label="Pasos", minimum=1, maximum=100, step=1, value=20)
					seed = gr.Number(label="Semilla", value=-1)

				btn = gr.Button("Generar")
				btn.click(
					fn=gen,
					inputs=[prompt, basemodel_choice, width, height, scales, steps, seed, upscale_factor, process_upscale, lora_model_choice, process_lora, upscale_model],
					outputs=output_res,
				)

	demo.launch()