update pnginfo checkpoint to return dict with parsed values

from secrets import compare_digest

import modules.shared as shared

from modules import sd_samplers, deepbooru, sd_hijack, images, scripts, ui, postprocessing, errors, restart, shared_items

from modules import sd_samplers, deepbooru, sd_hijack, images, scripts, ui, postprocessing, errors, restart, shared_items, script_callbacks, generation_parameters_copypaste

from modules.api import models

from modules.shared import opts

from modules.processing import StableDiffusionProcessingTxt2Img, StableDiffusionProcessingImg2Img, process_images

        return models.ExtrasBatchImagesResponse(images=list(map(encode_pil_to_base64, result[0])), html_info=result[1])

    def pnginfoapi(self, req: models.PNGInfoRequest):

        if(not req.image.strip()):

            return models.PNGInfoResponse(info="")

        image = decode_base64_to_image(req.image.strip())

        if image is None:

            return models.PNGInfoResponse(info="")

        if geninfo is None:

            geninfo = ""

        items = {**{'parameters': geninfo}, **items}

        params = generation_parameters_copypaste.parse_generation_parameters(geninfo)

        script_callbacks.infotext_pasted_callback(geninfo, params)

        return models.PNGInfoResponse(info=geninfo, items=items)

        return models.PNGInfoResponse(info=geninfo, items=items, parameters=params)

    def progressapi(self, req: models.ProgressRequest = Depends()):

        # copy from check_progress_call of ui.py

class PNGInfoResponse(BaseModel):

    info: str = Field(title="Image info", description="A string with the parameters used to generate the image")

    items: dict = Field(title="Items", description="An object containing all the info the image had")

    items: dict = Field(title="Items", description="A dictionary containing all the other fields the image had")

    parameters: dict = Field(title="Parameters", description="A dictionary with parsed generation info fields")

class ProgressRequest(BaseModel):

    skip_current_image: bool = Field(default=False, title="Skip current image", description="Skip current image serialization")