import os
import json

import numpy as np
from PIL import Image
from PIL.PngImagePlugin import PngInfo

from comfy.cli_args import args

import folder_paths

class SaveImageWithOptions:
    def __init__(self):
        self.output_dir = folder_paths.get_output_directory()
        self.type = "output"
        self.prefix_append = ""

    @classmethod
    def INPUT_TYPES(s):
        return {"required":
                    {"images": ("IMAGE", ),
                     "filename_prefix": ("STRING", {"default": "ComfyUI"}),
                     "includeCkptName": ("BOOLEAN", {"default": False})},
                "hidden": {"prompt": "PROMPT", "extra_pnginfo": "EXTRA_PNGINFO"},
                }

    RETURN_TYPES = ()
    FUNCTION = "save_images"

    OUTPUT_NODE = True

    CATEGORY = "image"

    def save_images(self, images, filename_prefix="ComfyUI", includeCkptName=False, prompt=None, extra_pnginfo=None):
        if prompt is not None:
            if includeCkptName:
                for x in prompt:
                    if "CheckpointLoader" in prompt[x]['class_type']:
                        ckpt_name = prompt[x]['inputs']['ckpt_name']
                        ckpt_name = ckpt_name[:ckpt_name.rfind('.')]
                        ckpt_name = ckpt_name.replace('\\', '_')
                        filename_prefix += ckpt_name
                        break

        filename_prefix += self.prefix_append
        full_output_folder, filename, counter, subfolder, filename_prefix = folder_paths.get_save_image_path(filename_prefix, self.output_dir, images[0].shape[1], images[0].shape[0])
        results = list()

        for image in images:
            i = 255. * image.cpu().numpy()
            img = Image.fromarray(np.clip(i, 0, 255).astype(np.uint8))
            metadata = None
            if not args.disable_metadata:
                metadata = PngInfo()
                if prompt is not None:
                    metadata.add_text("prompt", json.dumps(prompt))
                if extra_pnginfo is not None:
                    for x in extra_pnginfo:
                        metadata.add_text(x, json.dumps(extra_pnginfo[x]))
            file = f"{filename}_{counter:05}_.png"
            img.save(os.path.join(full_output_folder, file), pnginfo=metadata, compress_level=4)
            results.append({
                "filename": file,
                "subfolder": subfolder,
                "type": self.type
            })
            counter += 1

        return { "ui": { "images": results } }

# A dictionary that contains all nodes you want to export with their names
# NOTE: names should be globally unique
NODE_CLASS_MAPPINGS = {
    "SaveImageWithOptions": SaveImageWithOptions
}

# A dictionary that contains the friendly/humanly readable titles for the nodes
NODE_DISPLAY_NAME_MAPPINGS = {
    "SaveImageWithOptions": "Save Image with Options"
}