import os
from pathlib import Path

from dotenv import load_dotenv
from huggingface_hub import HfApi


def str_to_bool(value: str, default: bool = False) -> bool:
    if value is None:
        return default
    return value.strip().lower() in {"1", "true", "yes", "y"}


def push_deployment_files_to_hf_space(env_path: str = ".env") -> str:
    load_dotenv(env_path)
    hf_username = os.getenv("HF_USERNAME")
    hf_token = os.getenv("HF_TOKEN")
    if not hf_username or not hf_token:
        raise EnvironmentError(f"HF_USERNAME and HF_TOKEN must be set in {env_path}.")

    space_repo = os.getenv("HF_SPACE_REPO", f"{hf_username}/predictive-maintenance-engine-space")
    space_private = str_to_bool(os.getenv("HF_SPACE_PRIVATE"), default=False)
    deployment_dir = Path(__file__).resolve().parent

    required_files = ["Dockerfile", "README.md", "app.py", "requirements.txt", "deployment_config.json", ".dockerignore"]
    missing_files = [file_name for file_name in required_files if not (deployment_dir / file_name).exists()]
    if missing_files:
        raise FileNotFoundError(f"Missing deployment files: {missing_files}")

    api = HfApi(token=hf_token)
    api.create_repo(
        repo_id=space_repo,
        repo_type="space",
        space_sdk="docker",
        private=space_private,
        exist_ok=True,
    )
    api.upload_folder(
        repo_id=space_repo,
        repo_type="space",
        folder_path=str(deployment_dir),
        path_in_repo=".",
        ignore_patterns=["__pycache__/*", "*.pyc", ".env", "prediction_logs/*", "sample_prediction_inputs.csv"],
    )

    space_url = f"https://huggingface.co/spaces/{space_repo}"
    print("Deployment files pushed to Hugging Face Space:", space_url)
    return space_url


if __name__ == "__main__":
    push_deployment_files_to_hf_space()