from logging import getLogger
from typing import Any

import numpy as np
from diffusers import OnnxStableDiffusionImg2ImgPipeline, OnnxStableDiffusionPipeline
from PIL import Image, ImageChops

from ..chain import upscale_outpaint
from ..device_pool import JobContext
from ..output import save_image, save_params
from ..params import Border, ImageParams, Size, StageParams
from ..upscale import UpscaleParams, run_upscale_correction
from ..utils import ServerContext, run_gc
from .load import get_latents_from_seed, load_pipeline

logger = getLogger(__name__)


def run_txt2img_pipeline(
    job: JobContext,
    server: ServerContext,
    params: ImageParams,
    size: Size,
    output: str,
    upscale: UpscaleParams,
) -> None:
    pipe = load_pipeline(
        OnnxStableDiffusionPipeline, params.model, params.scheduler, job.get_device()
    )

    latents = get_latents_from_seed(params.seed, size)
    rng = np.random.RandomState(params.seed)

    progress = job.get_progress_callback()
    result = pipe.text2img(
        params.prompt,
        height=size.height,
        width=size.width,
        generator=rng,
        guidance_scale=params.cfg,
        latents=latents,
        negative_prompt=params.negative_prompt,
        num_inference_steps=params.steps,
        callback=progress,
    )
    image = result.images[0]
    image = run_upscale_correction(
        job, server, StageParams(), params, image, upscale=upscale
    )

    dest = save_image(server, output, image)
    save_params(server, output, params, size, upscale=upscale)

    del image
    del result
    run_gc()

    logger.info("finished txt2img job: %s", dest)


def run_img2img_pipeline(
    job: JobContext,
    server: ServerContext,
    params: ImageParams,
    output: str,
    upscale: UpscaleParams,
    source_image: Image.Image,
    strength: float,
) -> None:
    pipe = load_pipeline(
        OnnxStableDiffusionImg2ImgPipeline,
        params.model,
        params.scheduler,
        job.get_device(),
    )

    rng = np.random.RandomState(params.seed)

    progress = job.get_progress_callback()
    result = pipe.img2img(
        source_image,
        params.prompt,
        generator=rng,
        guidance_scale=params.cfg,
        negative_prompt=params.negative_prompt,
        num_inference_steps=params.steps,
        strength=strength,
        callback=progress,
    )
    image = result.images[0]
    image = run_upscale_correction(
        job, server, StageParams(), params, image, upscale=upscale
    )

    dest = save_image(server, output, image)
    size = Size(*source_image.size)
    save_params(server, output, params, size, upscale=upscale)

    del image
    del result
    run_gc()

    logger.info("finished img2img job: %s", dest)


def run_inpaint_pipeline(
    job: JobContext,
    server: ServerContext,
    params: ImageParams,
    size: Size,
    output: str,
    upscale: UpscaleParams,
    source_image: Image.Image,
    mask_image: Image.Image,
    border: Border,
    noise_source: Any,
    mask_filter: Any,
    strength: float,
    fill_color: str,
) -> None:
    # device = job.get_device()
    # progress = job.get_progress_callback()
    stage = StageParams()

    image = upscale_outpaint(
        job,
        server,
        stage,
        params,
        source_image,
        border=border,
        mask_image=mask_image,
        fill_color=fill_color,
        mask_filter=mask_filter,
        noise_source=noise_source,
    )
    logger.info("applying mask filter and generating noise source")

    if image.size == source_image.size:
        image = ImageChops.blend(source_image, image, strength)
    else:
        logger.info("output image size does not match source, skipping post-blend")

    image = run_upscale_correction(job, server, stage, params, image, upscale=upscale)

    dest = save_image(server, output, image)
    save_params(server, output, params, size, upscale=upscale, border=border)

    del image
    run_gc()

    logger.info("finished inpaint job: %s", dest)


def run_upscale_pipeline(
    job: JobContext,
    server: ServerContext,
    params: ImageParams,
    size: Size,
    output: str,
    upscale: UpscaleParams,
    source_image: Image.Image,
) -> None:
    # device = job.get_device()
    # progress = job.get_progress_callback()
    stage = StageParams()

    image = run_upscale_correction(
        job, server, stage, params, source_image, upscale=upscale
    )

    dest = save_image(server, output, image)
    save_params(server, output, params, size, upscale=upscale)

    del image
    run_gc()

    logger.info("finished upscale job: %s", dest)