import gradio as gr
import numpy as np
import random
import torch
import spaces
from diffusers import (
    DiffusionPipeline,
    AutoencoderTiny,
)
from huggingface_hub import hf_hub_download


def feifeimodload():

    dtype = torch.bfloat16
    device = "cuda" if torch.cuda.is_available() else "cpu"
    taef1 = AutoencoderTiny.from_pretrained("aifeifei798/taef1", torch_dtype=dtype).to(
        device
    )
    
    pipe = DiffusionPipeline.from_pretrained(
        "aifeifei798/DarkIdol-flux-v1.1", torch_dtype=dtype, vae=taef1
    ).to(device)

    pipe.load_lora_weights(
        hf_hub_download("aifeifei798/feifei-flux-lora-v1", "feifei.safetensors"),
        adapter_name="feifei",
    )

    pipe.set_adapters(
        ["feifei"],
        adapter_weights=[1],
    )
    pipe.fuse_lora(
        adapter_name=["feifei"],
        lora_scale=1.0,
    )
    
    pipe.unload_lora_weights()
    torch.cuda.empty_cache()
    return pipe
    
pipe = feifeimodload()
MAX_SEED = np.iinfo(np.int32).max
MAX_IMAGE_SIZE = 2048

@spaces.GPU()
def infer(prompt, seed=42, randomize_seed=False, width=1024, height=1024, num_inference_steps=4, progress=gr.Progress(track_tqdm=True)):
    if randomize_seed:
        seed = random.randint(0, MAX_SEED)
    generator = torch.Generator().manual_seed(seed)
    image = pipe(
            prompt = prompt, 
            width = width,
            height = height,
            num_inference_steps = num_inference_steps, 
            generator = generator,
            guidance_scale=0.0
    ).images[0] 
    return image, seed
 
examples = [
    "Capture a serene Japanese model in a snow-covered street, clad in a sensual Balenciaga winter outfit, evoking a sense of intimacy and luxury, with a harmonious blend of warm and cool tones, subtle shadows, and meticulous details, conveying a narrative of elegance and poise.",
    "A high-resolution photograph of a Japanese female model posing for a Louis Vuitton brand advertisement, featuring natural lighting effects, a consistent style, balanced composition, rich details, harmonious colors, no visible flaws, emotional expression, creativity, and uniqueness, with optimized technical parameters, master-level lighting, master-level color, and master-level styling.",
    "A high-resolution photograph of a Japanese female model in a serene, natural setting, with soft, warm lighting, and a minimalist aesthetic, showcasing a elegant fragrance bottle and the model's effortless, emotive expression, with impeccable styling, and a muted color palette, evoking a sense of understated luxury and refinement.",
    "A high-resolution photograph of a Japanese female model posing beside a sleek, red Ferrari, bathed in warm, golden light, with subtle shadows accentuating her curves and the car's contours, set against a blurred, gradient blue background, with the model's elegant, flowing gown and the Ferrari's metallic sheen perfectly complementing each other in a masterful display of color, texture, and composition.",
]

css="""
#col-container {
    margin: 0 auto;
    max-width: 520px;
}
"""

with gr.Blocks(css=css) as demo:
    
    with gr.Column(elem_id="col-container"):
        gr.Markdown(f"""# DarkIdol-flux-v1.1 + feifei-flux-lora-v1
DarkIdol-flux-v1.1 + feifei-flux-lora-v1 is a text-to-image AI model designed to create aesthetic, detailed and diverse images from textual prompts in just 6-8 steps. It offers enhanced performance in image quality, typography, understanding complex prompts, and resource efficiency.
        """)
        
        with gr.Row():
            
            prompt = gr.Text(
                label="Prompt",
                show_label=False,
                max_lines=12,
                placeholder="Enter your prompt",
                container=False,
            )
            
            run_button = gr.Button("Run", scale=0)
        
        result = gr.Image(label="Result", show_label=False)
        
        with gr.Accordion("Advanced Settings", open=False):
            
            seed = gr.Slider(
                label="Seed",
                minimum=0,
                maximum=MAX_SEED,
                step=1,
                value=0,
            )
            
            randomize_seed = gr.Checkbox(label="Randomize seed", value=True)
            
            with gr.Row():
                
                width = gr.Slider(
                    label="Width",
                    minimum=256,
                    maximum=MAX_IMAGE_SIZE,
                    step=32,
                    value=1088,
                )
                
                height = gr.Slider(
                    label="Height",
                    minimum=256,
                    maximum=MAX_IMAGE_SIZE,
                    step=32,
                    value=1920,
                )
            
            with gr.Row():
                
  
                num_inference_steps = gr.Slider(
                    label="Number of inference steps",
                    minimum=1,
                    maximum=50,
                    step=1,
                    value=6,
                )
        
        gr.Examples(
            examples = examples,
            fn = infer,
            inputs = [prompt],
            outputs = [result, seed],
            cache_examples=False
        )

    gr.on(
        triggers=[run_button.click, prompt.submit],
        fn = infer,
        inputs = [prompt, seed, randomize_seed, width, height, num_inference_steps],
        outputs = [result, seed]
    )

demo.launch()