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
)

def enable_lora(lora_add, basemodel):
    return basemodel if not lora_add else lora_add

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_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

def get_upscale_gfpgan(prompt, img_path):
    try:
        img = gfpgan.enhance(img_path)
        return img
    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 == "FineGrain":
            upscale_image = get_upscale_finegrain(prompt, image_path, upscale_factor)
        elif upscale_model == "GPFGAN":
            upscale_image = get_upscale_gfpgan(prompt, image_path)
        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=["FineGrain", "GPFGAN"], value="GPFGAN")
                
                with gr.Accordion(label="Opciones Avanzadas", open=False):
                    width = gr.Slider(label="Ancho", minimum=512, maximum=1280, step=8, value=1280)
                    height = gr.Slider(label="Alto", minimum=512, maximum=1280, step=8, value=768)
                    scales = gr.Slider(label="Escalas", minimum=3.5, maximum=7, step=0.1, value=3.5)
                    steps = gr.Slider(label="Pasos", minimum=1, maximum=100, step=1, value=24)
                    seed = gr.Slider(label="Semillas", minimum=-1, maximum=MAX_SEED, step=1, value=-1)
            
                submit_btn = gr.Button("Crear", scale=1)
                submit_btn.click(
                    fn=lambda: None,
                    inputs=None,
                    outputs=[output_res],
                    queue=False
                ).then(
                    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()