import os
import sys
from apps.stable_diffusion.src import get_available_devices
import glob
from pathlib import Path
from apps.stable_diffusion.src import args
from dataclasses import dataclass
import apps.stable_diffusion.web.utils.global_obj as global_obj
from apps.stable_diffusion.src.pipelines.pipeline_shark_stable_diffusion_utils import (
    SD_STATE_CANCEL,
)


@dataclass
class Config:
    mode: str
    model_id: str
    ckpt_loc: str
    custom_vae: str
    precision: str
    batch_size: int
    max_length: int
    height: int
    width: int
    device: str
    use_lora: str
    use_stencil: str
    ondemand: str  # should this be expecting a bool instead?


custom_model_filetypes = (
    "*.ckpt",
    "*.safetensors",
)  # the tuple of file types

scheduler_list_cpu_only = [
    "DDIM",
    "PNDM",
    "LMSDiscrete",
    "KDPM2Discrete",
    "DPMSolverMultistep",
    "DPMSolverMultistep++",
    "DPMSolverMultistepKarras",
    "DPMSolverMultistepKarras++",
    "EulerDiscrete",
    "EulerAncestralDiscrete",
    "DEISMultistep",
    "KDPM2AncestralDiscrete",
    "DPMSolverSinglestep",
    "DDPM",
    "HeunDiscrete",
]
scheduler_list = scheduler_list_cpu_only + [
    "SharkEulerDiscrete",
]

predefined_models = [
    "Linaqruf/anything-v3.0",
    "prompthero/openjourney",
    "wavymulder/Analog-Diffusion",
    "xzuyn/PhotoMerge",
    "stabilityai/stable-diffusion-2-1",
    "stabilityai/stable-diffusion-2-1-base",
    "CompVis/stable-diffusion-v1-4",
]

predefined_paint_models = [
    "runwayml/stable-diffusion-inpainting",
    "stabilityai/stable-diffusion-2-inpainting",
    "xzuyn/PhotoMerge-inpainting",
]
predefined_upscaler_models = [
    "stabilityai/stable-diffusion-x4-upscaler",
]


def resource_path(relative_path):
    """Get absolute path to resource, works for dev and for PyInstaller"""
    base_path = getattr(
        sys, "_MEIPASS", os.path.dirname(os.path.abspath(__file__))
    )
    return os.path.join(base_path, relative_path)


def create_custom_models_folders():
    dir = ["vae", "lora"]
    if not args.ckpt_dir:
        dir.insert(0, "models")
    else:
        if not os.path.isdir(args.ckpt_dir):
            sys.exit(
                f"Invalid --ckpt_dir argument, "
                f"{args.ckpt_dir} folder does not exists."
            )
    for root in dir:
        get_custom_model_path(root).mkdir(parents=True, exist_ok=True)


def get_custom_model_path(model="models"):
    # structure in WebUI :-
    #       models or args.ckpt_dir
    #         |___lora
    #         |___vae
    sub_folder = "" if model == "models" else model
    if args.ckpt_dir:
        return Path(Path(args.ckpt_dir), sub_folder)
    else:
        return Path(Path.cwd(), "models/" + sub_folder)


def get_custom_model_pathfile(custom_model_name, model="models"):
    return os.path.join(get_custom_model_path(model), custom_model_name)


def get_custom_model_files(model="models", custom_checkpoint_type=""):
    ckpt_files = []
    file_types = custom_model_filetypes
    if model == "lora":
        file_types = custom_model_filetypes + ("*.pt", "*.bin")
    for extn in file_types:
        files = [
            os.path.basename(x)
            for x in glob.glob(
                os.path.join(get_custom_model_path(model), extn)
            )
        ]
        match custom_checkpoint_type:
            case "inpainting":
                files = [
                    val
                    for val in files
                    if val.endswith("inpainting" + extn.removeprefix("*"))
                ]
            case "upscaler":
                files = [
                    val
                    for val in files
                    if val.endswith("upscaler" + extn.removeprefix("*"))
                ]
            case _:
                files = [
                    val
                    for val in files
                    if not (
                        val.endswith("inpainting" + extn.removeprefix("*"))
                        or val.endswith("upscaler" + extn.removeprefix("*"))
                    )
                ]
        ckpt_files.extend(files)
    return sorted(ckpt_files, key=str.casefold)


def get_custom_vae_or_lora_weights(weights, hf_id, model):
    use_weight = ""
    if weights == "None" and not hf_id:
        use_weight = ""
    elif not hf_id:
        use_weight = get_custom_model_pathfile(weights, model)
    else:
        use_weight = hf_id
    return use_weight


def cancel_sd():
    # Try catch it, as gc can delete global_obj.sd_obj while switching model
    try:
        global_obj.set_sd_status(SD_STATE_CANCEL)
    except Exception:
        pass


nodlogo_loc = resource_path("logos/nod-logo.png")
nodicon_loc = resource_path("logos/nod-icon.png")
available_devices = get_available_devices()