import os
import tempfile
import subprocess

from venv import create
import shutil
import sys
from pathlib import Path
from huggingface_hub import HfApi, create_repo

# --- Configuration ---
GITHUB_REPO_URL = os.environ.get("GITHUB_REPO_URL")
REPO_LIST = os.environ.get("GITHUB_REPO_LIST", '').split()
HF_REPO_ID = os.environ.get("HF_REPO_ID")
HF_TOKEN = os.environ.get("HF_TOKEN")
PRIVATE = os.environ.get("PRIVATE", "false")
REPO_TYPE = os.environ.get("REPO_TYPE", "model")

create(".env", system_site_packages=True, with_pip=True, clear=True)
python_executable = os.path.join(".env", "bin", "python")

PYTHON_VERSIONS = ["python3.10", "python3.11", "python3.12", "python3.13", "python3.14", "python3.15"]

# Setup directories
WHEEL_OUTPUT_DIR = Path(tempfile.mkdtemp())


def clean_env(work_dir):
    """Cleans up previous build artifacts."""
    if work_dir.exists():
        shutil.rmtree(work_dir)
    if WHEEL_OUTPUT_DIR.exists():
        shutil.rmtree(WHEEL_OUTPUT_DIR)


def clone_repo(work_dir, repo):
    """Clones the GitHub repository."""
    print(f"⬇️  Cloning {repo}...")
    subprocess.check_call(["git", "clone", repo, str(work_dir)])


def build_wheels(work_dir):
    """Builds wheels for each specified Python version."""
    # repo_name = repo.split("/")[-1].replace(".git", "")
    project_path = work_dir

    # Check if git clone created a subdirectory (standard behavior)
    # If the work_dir contains the .git directly, use it, otherwise find the folder
    cloned_folders = [f for f in work_dir.iterdir() if f.is_dir()]
    if len(cloned_folders) == 1:
        project_path = cloned_folders[0]

    print(f"🔨 Building in: {project_path}")

    for python_cmd in PYTHON_VERSIONS:
        print(f"⚙️  Building for {python_cmd}...")
        try:
            # Ensure 'build' is installed for that specific python version
            subprocess.check_call(
                [python_cmd, "-m", "pip", "install", "build"],
                stdout=subprocess.DEVNULL
            )

            # Run the build command
            # We output to our main wheel directory to collect them all in one place
            subprocess.check_call(
                [python_cmd, "-m", "build", "--wheel", "--outdir", str(WHEEL_OUTPUT_DIR.absolute())],
                cwd=project_path
            )
        except subprocess.CalledProcessError as e:
            print(f"❌ Failed to build for {python_cmd}. Ensure it is installed and in PATH.")
            print(e)
        except FileNotFoundError:
            print(f"❌ Executable {python_cmd} not found on system.")


def upload_to_hf():
    """Uploads the collected wheels to Hugging Face."""
    if not any(WHEEL_OUTPUT_DIR.iterdir()):
        print("⚠️  No wheels found to upload. Exiting.")
        return

    print(f"🚀 Uploading wheels to Hugging Face Repo: {HF_REPO_ID}...")

    api = HfApi(token=HF_TOKEN)

    try:
        create_repo(repo_id=HF_REPO_ID, private=PRIVATE, repo_type=REPO_TYPE)
        api.upload_folder(
            folder_path=WHEEL_OUTPUT_DIR,
            repo_id=HF_REPO_ID,
            repo_type=REPO_TYPE,
            commit_message=f"Update wheels for Python {', '.join([v.replace('python', '') for v in PYTHON_VERSIONS])}"
        )
        print("✅ Upload complete!")
    except Exception as e:
        print(f"❌ Upload failed: {e}")


def build_all(repo_list):
    for repo in repo_list:
        work_dir = Path(tempfile.mkdtemp())
        try:
            clean_env(work_dir)
            clone_repo(work_dir, repo)
            build_wheels(work_dir)
            upload_to_hf()
            shutil.rmtree(work_dir)
        finally:
            # Optional: Cleanup after running
            pass


def main():
    if not HF_TOKEN:
        print("❌ Error: HF_TOKEN environment variable not set.")
        sys.exit(1)
    build_all(REPO_LIST)


if __name__ == "__main__":
    main()
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