#!/usr/bin/env python

# Copyright (c) ONNX Project Contributors
#
# SPDX-License-Identifier: Apache-2.0
from __future__ import annotations

import argparse
import os
import shutil
import subprocess


def parse_args() -> argparse.Namespace:
    parser = argparse.ArgumentParser(os.path.basename(__file__))
    parser.add_argument(
        "-r",
        "--root",
        default=os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
        help="onnx root directory (default: %(default)s)",
    )
    parser.add_argument("-o", "--out", required=True, help="output directory")
    return parser.parse_args()


def _resolve(name: str) -> str:
    path = shutil.which(name)
    if path is None:
        raise FileNotFoundError(f"{name!r} not found on PATH")
    return path


def gen_trace_file(root_dir: str, out_path: str) -> None:
    lcov = _resolve("lcov")
    subprocess.run(  # noqa: S603
        [
            lcov,
            "-c",
            "-d",
            root_dir,
            "--no-external",
            "--path",
            root_dir,
            "-o",
            out_path,
        ],
        check=True,
    )

    subprocess.run(  # noqa: S603
        [
            lcov,
            "-r",
            out_path,
            os.path.join(root_dir, ".setuptools-cmake-build", "*"),
            "-o",
            out_path,
        ],
        check=True,
    )


def gen_html_files(root_dir: str, trace_path: str, out_dir: str) -> None:
    subprocess.run(  # noqa: S603
        [
            _resolve("genhtml"),
            trace_path,
            "-p",
            root_dir,
            "-o",
            out_dir,
        ],
        check=True,
    )


def main() -> None:
    args = parse_args()

    root = os.path.abspath(args.root)
    out = os.path.abspath(args.out)
    if not os.path.exists(out):
        os.makedirs(out)

    trace_path = os.path.join(out, "onnx-coverage.info")
    gen_trace_file(root, trace_path)

    html_dir = os.path.join(out, "html")
    gen_html_files(root, trace_path, html_dir)

    print(f"Static HTML files have been generated at:\n\t{html_dir}")


if __name__ == "__main__":
    main()