import json
import os
import pprint
import re
from datetime import datetime, timezone

import click
from colorama import Fore
from huggingface_hub import HfApi, snapshot_download

from src.envs import QUEUE_REPO, EVAL_REQUESTS_PATH


precisions = ("float16", "bfloat16", "8bit (LLM.int8)", "4bit (QLoRA / FP4)", "GPTQ")
model_types = ("pretrained", "fine-tuned", "RL-tuned", "instruction-tuned")
weight_types = ("Original", "Delta", "Adapter")


def get_model_size(model_info, precision: str):
    size_pattern = size_pattern = re.compile(r"(\d\.)?\d+(b|m)")
    try:
        model_size = round(model_info.safetensors["total"] / 1e9, 3)
    except (AttributeError, TypeError):
        try:
            size_match = re.search(size_pattern, model_info.modelId.lower())
            model_size = size_match.group(0)
            model_size = round(float(model_size[:-1]) if model_size[-1] == "b"
                            else float(model_size[:-1]) / 1e3, 3)
        except AttributeError:
            return 0  # Unknown model sizes are indicated as 0, see NUMERIC_INTERVALS in app.py

    size_factor = 8 if (precision == "GPTQ" or "gptq" in model_info.modelId.lower()) else 1
    model_size = size_factor * model_size
    return model_size


def main():
    api = HfApi()
    current_time = datetime.now(timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ")
    snapshot_download(repo_id=QUEUE_REPO, revision="main", local_dir=EVAL_REQUESTS_PATH,
                    repo_type="dataset")

    model_name = click.prompt("Enter model name")
    revision = click.prompt("Enter revision", default="main")
    precision = click.prompt("Enter precision", default="float16", type=click.Choice(precisions))
    model_type = click.prompt("Enter model type", type=click.Choice(model_types))
    weight_type = click.prompt("Enter weight type", default="Original",
                            type=click.Choice(weight_types))
    base_model = click.prompt("Enter base model", default="")
    status = click.prompt("Enter status", default="FINISHED")

    try:
        model_info = api.model_info(repo_id=model_name, revision=revision)
    except Exception as e:
        print(f"{Fore.RED}Could not find model info for {model_name} on the Hub\n{e}{Fore.RESET}")
        return 1

    model_size = get_model_size(model_info=model_info, precision=precision)

    try:
        license = model_info.cardData["license"]
    except Exception:
        license = "?"

    eval_entry = {
        "model": model_name,
        "base_model": base_model,
        "revision": revision,
        "private": False,
        "precision": precision,
        "weight_type": weight_type,
        "status": status,
        "submitted_time": current_time,
        "model_type": model_type,
        "likes": model_info.likes,
        "params": model_size,
        "license": license,
    }

    user_name = ""
    model_path = model_name
    if "/" in model_name:
        user_name = model_name.split("/")[0]
        model_path = model_name.split("/")[1]

    pprint.pprint(eval_entry)

    if click.confirm("Do you want to continue? This request file will be pushed to the hub"):
        click.echo("continuing...")

        out_dir = f"{EVAL_REQUESTS_PATH}/{user_name}"
        os.makedirs(out_dir, exist_ok=True)
        out_path = f"{out_dir}/{model_path}_eval_request_{False}_{precision}_{weight_type}.json"

        with open(out_path, "w") as f:
            f.write(json.dumps(eval_entry))

        api.upload_file(
            path_or_fileobj=out_path,
            path_in_repo=out_path.split(f"{EVAL_REQUESTS_PATH}/")[1],
            repo_id=QUEUE_REPO,
            repo_type="dataset",
            commit_message=f"Add {model_name} to eval queue",
        )
    else:
        click.echo("aborting...")


if __name__ == "__main__":
    main()