import torch
import numpy as np
import comfy.model_management as model_management
import comfy.utils

# Requires comfyui_controlnet_aux funcsions and classes
from ..utils import common_annotator_call, INPUT, define_preprocessor_inputs

def get_intensity_mask(image_array, lower_bound, upper_bound):
    mask = image_array[:, :, 0]
    mask = np.where((mask >= lower_bound) & (mask <= upper_bound), mask, 0)
    mask = np.expand_dims(mask, 2).repeat(3, axis=2)
    return mask

def combine_layers(base_layer, top_layer):
    mask = top_layer.astype(bool)
    temp = 1 - (1 - top_layer) * (1 - base_layer)
    result = base_layer * (~mask) + temp * mask
    return result

class AnyLinePreprocessor:
    @classmethod
    def INPUT_TYPES(s):
        return define_preprocessor_inputs(
            merge_with_lineart=INPUT.COMBO(["lineart_standard", "lineart_realisitic", "lineart_anime", "manga_line"], default="lineart_standard"),
            resolution=INPUT.RESOLUTION(default=1280, step=8),
            lineart_lower_bound=INPUT.FLOAT(default=0),
            lineart_upper_bound=INPUT.FLOAT(default=1),
            object_min_size=INPUT.INT(default=36, min=1),
            object_connectivity=INPUT.INT(default=1, min=1)
        )

    RETURN_TYPES = ("IMAGE",)
    RETURN_NAMES = ("image",)

    FUNCTION = "get_anyline"
    CATEGORY = "ControlNet Preprocessors/Line Extractors"

    def __init__(self):
        self.device = model_management.get_torch_device()

    def get_anyline(self, image, merge_with_lineart="lineart_standard", resolution=512, lineart_lower_bound=0, lineart_upper_bound=1, object_min_size=36, object_connectivity=1):
        from custom_controlnet_aux.teed import TEDDetector
        from skimage import morphology
        pbar = comfy.utils.ProgressBar(3)

        # Process the image with MTEED model
        mteed_model = TEDDetector.from_pretrained("TheMistoAI/MistoLine", "MTEED.pth", subfolder="Anyline").to(self.device)
        mteed_result = common_annotator_call(mteed_model, image, resolution=resolution, show_pbar=False)
        mteed_result = mteed_result.numpy()
        del mteed_model
        pbar.update(1)

        # Process the image with the lineart standard preprocessor
        if merge_with_lineart == "lineart_standard":
            from custom_controlnet_aux.lineart_standard import LineartStandardDetector
            lineart_standard_detector = LineartStandardDetector()
            lineart_result = common_annotator_call(lineart_standard_detector, image, guassian_sigma=2, intensity_threshold=3, resolution=resolution, show_pbar=False).numpy()
            del lineart_standard_detector
        else:
            from custom_controlnet_aux.lineart import LineartDetector
            from custom_controlnet_aux.lineart_anime import LineartAnimeDetector
            from custom_controlnet_aux.manga_line import LineartMangaDetector
            lineart_detector = dict(lineart_realisitic=LineartDetector, lineart_anime=LineartAnimeDetector, manga_line=LineartMangaDetector)[merge_with_lineart]
            lineart_detector = lineart_detector.from_pretrained().to(self.device)
            lineart_result = common_annotator_call(lineart_detector, image, resolution=resolution, show_pbar=False).numpy()
            del lineart_detector
        pbar.update(1)
        
        final_result = []
        for i in range(len(image)):
            _lineart_result  = get_intensity_mask(lineart_result[i], lower_bound=lineart_lower_bound, upper_bound=lineart_upper_bound)
            _cleaned = morphology.remove_small_objects(_lineart_result.astype(bool), min_size=object_min_size, connectivity=object_connectivity)
            _lineart_result = _lineart_result * _cleaned
            _mteed_result = mteed_result[i]

            # Combine the results
            final_result.append(torch.from_numpy(combine_layers(_mteed_result, _lineart_result)))
        pbar.update(1)
        return (torch.stack(final_result),)

NODE_CLASS_MAPPINGS = {
    "AnyLineArtPreprocessor_aux": AnyLinePreprocessor
}
NODE_DISPLAY_NAME_MAPPINGS = {
    "AnyLineArtPreprocessor_aux": "AnyLine Lineart"
}