#!/usr/bin/env python3

# Copyright Advanced Micro Devices, Inc., or its affiliates.
# SPDX-License-Identifier: MIT

import argparse
import re
import subprocess
from datetime import datetime
from pathlib import Path


def runAndLog(args):
    fname = Path(args.output_file)
    output = subprocess.check_output(args.command, cwd=args.working_directory).decode()
    print(output)
    if args.regex:
        regex = "|".join(["(?:{})".format(r) for r in args.regex])
        output = ", ".join(re.findall(regex, output))
    if not args.exclude_commit:
        commit = subprocess.check_output(
            "git rev-parse --short HEAD".split(), cwd=args.git_directory
        ).decode()
        output = ", ".join(["Git Commit: {}".format(commit.strip()), output])
    output = ", ".join([str(datetime.now()), output])
    print(output)
    mode = "w" if args.overwrite else "a"
    with fname.open(mode) as log:
        log.write(output)
        log.write("\n")


if __name__ == "__main__":
    parser = argparse.ArgumentParser(
        description="""Run a program and log its output to a file along
        with current git commit."""
    )
    parser.add_argument(
        "--output_file", type=str, default="run.log", help="Target log file."
    )
    parser.add_argument(
        "--overwrite",
        action="store_true",
        help="Overwrite the output file instead of appending.",
    )
    parser.add_argument(
        "--exclude_commit", action="store_true", help="Don\t include commit ID in log."
    )
    parser.add_argument(
        "--git_directory",
        type=str,
        default="./",
        help="Directory to query for git commit.",
    )
    parser.add_argument(
        "--working_directory",
        type=str,
        default="./",
        help="Directory to run script in.",
    )
    parser.add_argument(
        "-r",
        "--regex",
        default=[],
        type=str,
        action="append",
        help="Regex for what to capture and log.",
    )
    parser.add_argument(
        "command", nargs=argparse.REMAINDER, help="Command to run and log."
    )
    args = parser.parse_args()

    runAndLog(args)