import gradio as gr
import platform
from PIL import Image
from src.tryon_pipeline import StableDiffusionXLInpaintPipeline as TryonPipeline
from src.unet_hacked_garmnet import UNet2DConditionModel as UNet2DConditionModel_ref
from src.unet_hacked_tryon import UNet2DConditionModel
from transformers import (
    CLIPImageProcessor,
    CLIPVisionModelWithProjection,
    CLIPTextModel,
    CLIPTextModelWithProjection,
)
from diffusers import DDPMScheduler,AutoencoderKL
from typing import List
import argparse
import torch
import os
from transformers import AutoTokenizer
import numpy as np
from utils_mask import get_mask_location
from torchvision import transforms
import apply_net
from preprocess.humanparsing.run_parsing import Parsing
from preprocess.openpose.run_openpose import OpenPose
from detectron2.data.detection_utils import convert_PIL_to_numpy,_apply_exif_orientation
from torchvision.transforms.functional import to_pil_image

parser = argparse.ArgumentParser()
parser.add_argument("--share", type=str, default=False, help="Set to True to share the app publicly.")
args = parser.parse_args()
torchtype=torch.float16
#torchtype=torch.bfloat16 no positive impact

def save_output_image(image, base_path="outputs", base_filename="inputimage",  seed=0):
    """Save an image with a unique filename in the specified directory."""
    if not os.path.exists(base_path):
        os.makedirs(base_path)
        
    # Check for existing files and create a new filename
    index = 0
    while True:
        if index == 0:
            filename = f"{base_filename}_seed_{seed}.png"
        else:
            filename = f"{base_filename}_{str(index).zfill(4)}_seed_{seed}.png"
        
        file_path = os.path.join(base_path, filename)
        if not os.path.exists(file_path):
            image.save(file_path)
            break
        index += 1
    return file_path

def pil_to_binary_mask(pil_image, threshold=0):
    np_image = np.array(pil_image)
    grayscale_image = Image.fromarray(np_image).convert("L")
    binary_mask = np.array(grayscale_image) > threshold
    mask = np.zeros(binary_mask.shape, dtype=np.uint8)
    for i in range(binary_mask.shape[0]):
        for j in range(binary_mask.shape[1]):
            if binary_mask[i,j] == True :
                mask[i,j] = 1
    mask = (mask*255).astype(np.uint8)
    output_mask = Image.fromarray(mask)
    return output_mask


base_path = 'yisol/IDM-VTON'
example_path = os.path.join(os.path.dirname(__file__), 'example')

unet = UNet2DConditionModel.from_pretrained(
    base_path,
    subfolder="unet",
    torch_dtype=torchtype,
)
unet.requires_grad_(False)
tokenizer_one = AutoTokenizer.from_pretrained(
    base_path,
    subfolder="tokenizer",
    revision=None,
    use_fast=False,
)
tokenizer_two = AutoTokenizer.from_pretrained(
    base_path,
    subfolder="tokenizer_2",
    revision=None,
    use_fast=False,
)
noise_scheduler = DDPMScheduler.from_pretrained(base_path, subfolder="scheduler")

text_encoder_one = CLIPTextModel.from_pretrained(
    base_path,
    subfolder="text_encoder",
    torch_dtype=torchtype,
)
text_encoder_two = CLIPTextModelWithProjection.from_pretrained(
    base_path,
    subfolder="text_encoder_2",
    torch_dtype=torchtype,
)
image_encoder = CLIPVisionModelWithProjection.from_pretrained(
    base_path,
    subfolder="image_encoder",
    torch_dtype=torchtype,
    )
vae = AutoencoderKL.from_pretrained(base_path,
                                    subfolder="vae",
                                    torch_dtype=torchtype,
)

# "stabilityai/stable-diffusion-xl-base-1.0",
UNet_Encoder = UNet2DConditionModel_ref.from_pretrained(
    base_path,
    subfolder="unet_encoder",
    torch_dtype=torchtype,
)

parsing_model = Parsing(0)
openpose_model = OpenPose(0)

UNet_Encoder.requires_grad_(False)
image_encoder.requires_grad_(False)
vae.requires_grad_(False)
unet.requires_grad_(False)
text_encoder_one.requires_grad_(False)
text_encoder_two.requires_grad_(False)
tensor_transfrom = transforms.Compose(
            [
                transforms.ToTensor(),
                transforms.Normalize([0.5], [0.5]),
            ]
    )

pipe = TryonPipeline.from_pretrained(
        base_path,
        unet=unet,
        vae=vae,
        feature_extractor= CLIPImageProcessor(),
        text_encoder = text_encoder_one,
        text_encoder_2 = text_encoder_two,
        tokenizer = tokenizer_one,
        tokenizer_2 = tokenizer_two,
        scheduler = noise_scheduler,
        image_encoder=image_encoder,
        torch_dtype=torchtype,
)
pipe.unet_encoder = UNet_Encoder

#pipe.enable_xformers_memory_efficient_attention() breaks app
#pipe.enable_vae_tiling() no changes
#pipe.enable_vae_slicing() no changes
#pipe.enable_model_cpu_offload() not working

def open_folder():
    open_folder_path = os.path.abspath("outputs")
    if platform.system() == "Windows":
        os.startfile(open_folder_path)
    elif platform.system() == "Linux":
        os.system(f'xdg-open "{open_folder_path}"')



def start_tryon(dict,garm_img,garment_des,is_checked,is_checked_crop,denoise_steps,seed,number_of_images):
    device = "cuda"
    
    openpose_model.preprocessor.body_estimation.model.to(device)
    pipe.to(device)
    pipe.unet_encoder.to(device)

    garm_img= garm_img.convert("RGB").resize((768,1024))
    human_img_orig = dict["background"].convert("RGB")    
    
    if is_checked_crop:
        width, height = human_img_orig.size
        target_width = int(min(width, height * (3 / 4)))
        target_height = int(min(height, width * (4 / 3)))
        left = (width - target_width) / 2
        top = (height - target_height) / 2
        right = (width + target_width) / 2
        bottom = (height + target_height) / 2
        cropped_img = human_img_orig.crop((left, top, right, bottom))
        crop_size = cropped_img.size
        human_img = cropped_img.resize((768,1024))
    else:
        human_img = human_img_orig.resize((768,1024))


    if is_checked:
        keypoints = openpose_model(human_img.resize((384,512)))
        model_parse, _ = parsing_model(human_img.resize((384,512)))
        mask, mask_gray = get_mask_location('hd', "upper_body", model_parse, keypoints)
        mask = mask.resize((768,1024))
    else:
        mask = pil_to_binary_mask(dict['layers'][0].convert("RGB").resize((768, 1024)))
        # mask = transforms.ToTensor()(mask)
        # mask = mask.unsqueeze(0)
    mask_gray = (1-transforms.ToTensor()(mask)) * tensor_transfrom(human_img)
    mask_gray = to_pil_image((mask_gray+1.0)/2.0)


    human_img_arg = _apply_exif_orientation(human_img.resize((384,512)))
    human_img_arg = convert_PIL_to_numpy(human_img_arg, format="BGR")
     
    

    args = apply_net.create_argument_parser().parse_args(('show', './configs/densepose_rcnn_R_50_FPN_s1x.yaml', './ckpt/densepose/model_final_162be9.pkl', 'dp_segm', '-v', '--opts', 'MODEL.DEVICE', 'cuda'))
    # verbosity = getattr(args, "verbosity", None)
    pose_img = args.func(args,human_img_arg)    
    pose_img = pose_img[:,:,::-1]    
    pose_img = Image.fromarray(pose_img).resize((768,1024))
    
    with torch.no_grad():
        # Extract the images
        with torch.cuda.amp.autocast():
            with torch.no_grad():
                prompt = "model is wearing " + garment_des
                negative_prompt = "monochrome, lowres, bad anatomy, worst quality, low quality"
                with torch.inference_mode():
                    (
                        prompt_embeds,
                        negative_prompt_embeds,
                        pooled_prompt_embeds,
                        negative_pooled_prompt_embeds,
                    ) = pipe.encode_prompt(
                        prompt,
                        num_images_per_prompt=1,
                        do_classifier_free_guidance=True,
                        negative_prompt=negative_prompt,
                    )
                                    
                    prompt = "a photo of " + garment_des
                    negative_prompt = "monochrome, lowres, bad anatomy, worst quality, low quality"
                    if not isinstance(prompt, List):
                        prompt = [prompt] * 1
                    if not isinstance(negative_prompt, List):
                        negative_prompt = [negative_prompt] * 1
                    with torch.inference_mode():
                        (
                            prompt_embeds_c,
                            _,
                            _,
                            _,
                        ) = pipe.encode_prompt(
                            prompt,
                            num_images_per_prompt=1,
                            do_classifier_free_guidance=False,
                            negative_prompt=negative_prompt,
                        )



                    pose_img =  tensor_transfrom(pose_img).unsqueeze(0).to(device,torchtype)
                    garm_tensor =  tensor_transfrom(garm_img).unsqueeze(0).to(device,torchtype)
                    results = []
                    current_seed = seed
                    for i in range(number_of_images):
                        
                        generator = torch.Generator(device).manual_seed(current_seed) if seed != -1 else None
                        current_seed = seed + i

                        images = pipe(
                            prompt_embeds=prompt_embeds.to(device,torchtype),
                            negative_prompt_embeds=negative_prompt_embeds.to(device,torchtype),
                            pooled_prompt_embeds=pooled_prompt_embeds.to(device,torchtype),
                            negative_pooled_prompt_embeds=negative_pooled_prompt_embeds.to(device,torchtype),
                            num_inference_steps=denoise_steps,
                            generator=generator,
                            strength = 1.0,
                            pose_img = pose_img.to(device,torchtype),
                            text_embeds_cloth=prompt_embeds_c.to(device,torchtype),
                            cloth = garm_tensor.to(device,torchtype),
                            mask_image=mask,
                            image=human_img, 
                            height=1024,
                            width=768,
                            ip_adapter_image = garm_img.resize((768,1024)),
                            guidance_scale=2.0,
                        )[0]
                        if is_checked_crop:
                            out_img = images[0].resize(crop_size)        
                            human_img_orig.paste(out_img, (int(left), int(top)))   
                            img_path = save_output_image(human_img_orig, base_path="outputs", base_filename='img', seed=current_seed)
                            results.append(img_path)
                        else:
                            img_path = save_output_image(images[0], base_path="outputs", base_filename='img')
                            results.append(img_path)
                    return results, mask_gray
    # return images[0], mask_gray

garm_list = os.listdir(os.path.join(example_path,"cloth"))
garm_list_path = [os.path.join(example_path,"cloth",garm) for garm in garm_list]

human_list = os.listdir(os.path.join(example_path,"human"))
human_list_path = [os.path.join(example_path,"human",human) for human in human_list]

human_ex_list = []
for ex_human in human_list_path:
    if "Jensen" in ex_human or "sam1 (1)" in ex_human:
        ex_dict = {}
        ex_dict['background'] = ex_human
        ex_dict['layers'] = None
        ex_dict['composite'] = None
        human_ex_list.append(ex_dict)

##default human


image_blocks = gr.Blocks().queue()
with image_blocks as demo:
    gr.Markdown("## V4 IDM-VTON 👕👔👚 improved by SECourses : 1-Click Installers Latest Version On : https://www.patreon.com/posts/103022942")
    gr.Markdown("Virtual Try-on with your image and garment image. Check out the [source codes](https://github.com/yisol/IDM-VTON) and the [model](https://huggingface.co/yisol/IDM-VTON)")
    with gr.Row():
        with gr.Column():
            imgs = gr.ImageEditor(sources='upload', type="pil", label='Human. Mask with pen or use auto-masking', interactive=True)
            with gr.Row():
                is_checked = gr.Checkbox(label="Yes", info="Use auto-generated mask (Takes 5 seconds)",value=True)
            with gr.Row():
                is_checked_crop = gr.Checkbox(label="Yes", info="Use auto-crop & resizing",value=True)

            example = gr.Examples(
                inputs=imgs,
                examples_per_page=2,
                examples=human_ex_list
            )

        with gr.Column():
            garm_img = gr.Image(label="Garment", sources='upload', type="pil")
            with gr.Row(elem_id="prompt-container"):
                with gr.Row():
                    prompt = gr.Textbox(placeholder="Description of garment ex) Short Sleeve Round Neck T-shirts", show_label=False, elem_id="prompt")
            example = gr.Examples(
                inputs=garm_img,
                examples_per_page=8,
                examples=garm_list_path)
        with gr.Column():
            with gr.Row():
            # image_out = gr.Image(label="Output", elem_id="output-img", height=400)
                masked_img = gr.Image(label="Masked image output", elem_id="masked-img",show_share_button=False)
            with gr.Row():
                btn_open_outputs = gr.Button("Open Outputs Folder")
                btn_open_outputs.click(fn=open_folder)
        with gr.Column():
            with gr.Row():
            # image_out = gr.Image(label="Output", elem_id="output-img", height=400)
                image_gallery = gr.Gallery(label="Generated Images", show_label=True)
            with gr.Row():
                try_button = gr.Button(value="Try-on")
                denoise_steps = gr.Number(label="Denoising Steps", minimum=20, maximum=120, value=30, step=1)
                seed = gr.Number(label="Seed", minimum=-1, maximum=2147483647, step=1, value=1)
                number_of_images = gr.Number(label="Number Of Images To Generate (it will start from your input seed and increment by 1)", minimum=1, maximum=9999, value=1, step=1)


    try_button.click(fn=start_tryon, inputs=[imgs, garm_img, prompt, is_checked, is_checked_crop, denoise_steps, seed, number_of_images], outputs=[image_gallery, masked_img], api_name='tryon')

            


image_blocks.launch(inbrowser=True,share=args.share)
