#!/usr/bin/env python3
import argparse
from pathlib import Path
from typing import List, NamedTuple
import shutil
import subprocess
import sys


class TestOptions(NamedTuple):
    exe: Path
    toolchain: str


def run_test_dir(dir: Path, opts: TestOptions) -> bool:
    print(f'Running test: {dir.name} ...')
    out_dir = dir / '_build'
    if out_dir.exists():
        shutil.rmtree(out_dir)
    res = subprocess.run(
        [
            str(opts.exe),
            'build',
            '--export',
            '--warnings',
            '--tests',
            f'--toolchain={opts.toolchain}',
            f'--out-dir={out_dir}',
        ],
        cwd=dir,
        stdout=subprocess.PIPE,
        stderr=subprocess.STDOUT,
    )
    if res.returncode != 0:
        print(f'Test failed with exit code [{res.returncode}]:\n{res.stdout}')
    return res.returncode == 0


def run_tests(opts: TestOptions) -> int:
    print('Sanity check...')
    subprocess.check_output([str(opts.exe), '--help'])
    tests_subdir = Path(__file__).parent.absolute() / 'tests'

    test_dirs = tests_subdir.glob('*.test')
    ret = 0
    for td in test_dirs:
        if not run_test_dir(td, opts):
            ret = 1
    return ret


def main(argv: List[str]) -> int:
    parser = argparse.ArgumentParser()
    parser.add_argument(
        '--exe',
        '-e',
        help='Path to the ddslim executable to test',
        required=True)
    parser.add_argument(
        '--toolchain',
        '-T',
        help='The ddslim toolchain to use while testing',
        required=True,
    )
    args = parser.parse_args(argv)

    opts = TestOptions(exe=Path(args.exe).absolute(), toolchain=args.toolchain)

    return run_tests(opts)


if __name__ == "__main__":
    sys.exit(main(sys.argv[1:]))