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import gradio as gr
import modules.scripts as scripts
from modules.upscaler import Upscaler, UpscalerData
from modules import scripts, shared, images,  scripts_postprocessing
from modules.processing import StableDiffusionProcessing, StableDiffusionProcessingImg2Img
from modules.shared import cmd_opts, opts, state
from PIL import Image
import glob
from modules.face_restoration import FaceRestoration

from scripts.faceswap_logging import logger
from scripts.swapper import UpscaleOptions, swap_face
from scripts.faceswap_version import version_flag
import os

def get_models():
    models_path = os.path.join(scripts.basedir(), "extensions/sd-webui-faceswap/models/*")
    models = glob.glob(models_path)
    models_path = os.path.join(scripts.basedir(), "models/FaceSwap/*")
    models += glob.glob(models_path)
    models = [x for x in models if x.endswith(".onnx") or x.endswith(".pth")]
    return models


class FaceSwapScript(scripts.Script):
    def title(self):
        return f"FaceSwap"

    def show(self, is_img2img):
        return scripts.AlwaysVisible

    def ui(self, is_img2img):
        with gr.Accordion(f"Face Swap {version_flag}", open=False):
            with gr.Column():
                img = gr.inputs.Image(type="pil")
                enable = gr.Checkbox(
                    False, placeholder="enable", label="Enable"
                )
                faces_index = gr.Textbox(
                    value="0",
                    placeholder="Which face to swap (comma separated), start from 0",
                    label="Comma separated face number(s)",
                )
                with gr.Row():
                    face_restorer_name = gr.Radio(label='Restore Face', choices=["None"]+[x.name() for x in shared.face_restorers],
                                    value=shared.face_restorers[0].name(), type="value")
                    face_restorer_visibility = gr.Slider(0,1,1, step=0.1, label="Restore visibility")
                upscaler_name = gr.inputs.Dropdown(choices=[upscaler.name for upscaler in shared.sd_upscalers], label="Upscaler")
                upscaler_scale = gr.Slider(1,8,1, step=0.1, label="Upscaler scale")
                upscaler_visibility = gr.Slider(0,1,1, step=0.1, label="Upscaler visibility (if scale = 1)")
                
                models = get_models()
                if(len(models) == 0) :
                    logger.warning("You should at least have one model in models directory, please read the doc here : https://github.com/Ynn/sd-webui-faceswap/")                    
                    model = gr.inputs.Dropdown(choices=models, label="Model not found, please download one and reload automatic 1111")
                else :
                    model = gr.inputs.Dropdown(choices=models, label="Model", default=models[0])
                

                swap_in_source = gr.Checkbox(
                    False, placeholder="Swap face in source image", label="Swap in source image", visible=is_img2img
                )
                swap_in_generated = gr.Checkbox(
                    True, placeholder="Swap face in generated image", label="Swap in generated image", visible=is_img2img
                )

        return [img, enable, faces_index, model, face_restorer_name,face_restorer_visibility, upscaler_name, upscaler_scale, upscaler_visibility, swap_in_source, swap_in_generated]

    @property
    def upscaler(self) -> UpscalerData :
        for upscaler in shared.sd_upscalers :
            if upscaler.name == self.upscaler_name :
                return upscaler
        return None

    @property
    def face_restorer(self) -> FaceRestoration :
        for face_restorer in shared.face_restorers :
            if face_restorer.name() == self.face_restorer_name :
                return face_restorer
        return None 

    @property
    def upscale_options(self) -> UpscaleOptions :
        return UpscaleOptions(scale = self.upscaler_scale, upscaler= self.upscaler, face_restorer=self.face_restorer, upscale_visibility = self.upscaler_visibility, restorer_visibility=self.face_restorer_visibility)


    def process(self, p: StableDiffusionProcessing, img, enable, faces_index, model, face_restorer_name,face_restorer_visibility,  upscaler_name, upscaler_scale, upscaler_visibility, swap_in_source, swap_in_generated):
        self.source = img
        self.face_restorer_name = face_restorer_name
        self.upscaler_scale = upscaler_scale
        self.upscaler_visibility = upscaler_visibility
        self.face_restorer_visibility = face_restorer_visibility
        self.enable = enable
        self.upscaler_name = upscaler_name
        self.swap_in_generated = swap_in_generated
        self.model=model
        self.faces_index = {int(x) for x in faces_index.strip(",").split(",") if x.isnumeric()}
        if len(self.faces_index) == 0 :
            self.faces_index = [0]
        if self.enable:
            if self.source is not None:
                if isinstance(p,StableDiffusionProcessingImg2Img) and swap_in_source:
                    logger.info(f"FaceSwap enabled, face index %s", self.faces_index)

                    for i in range(len(p.init_images)) :
                        logger.info(f"Swap in source %s", i)
                        p.init_images[i] = swap_face(self.source, p.init_images[i], faces_index = self.faces_index, model=self.model, upscale_options=self.upscale_options)

            else :
                logger.error(f"Please provide a source face")

    def postprocess_image(self, p, script_pp: scripts.PostprocessImageArgs, *args):
        if self.enable and self.swap_in_generated:
            if self.source is not None:
                image: Image.Image = script_pp.image
                result = swap_face(self.source, image, faces_index = self.faces_index, model=self.model, upscale_options=self.upscale_options)
                pp = scripts_postprocessing.PostprocessedImage(result)
                pp.info = {}
                p.extra_generation_params.update(pp.info)
                script_pp.image = pp.image