#!/usr/bin/env python3
#
# Copyright 2022 The Dawn & Tint Authors
#
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# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright notice, this
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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import argparse
import tarfile
import datetime
import os
import sys


def gen_cache(out_dir):
    script_directory = os.path.dirname(os.path.abspath(sys.argv[0]))
    tar = tarfile.open(os.path.join(script_directory, '../cache.tar.gz'))
    tar.extractall(out_dir)
    # Update timestamps
    now = datetime.datetime.now().timestamp()
    for name in tar.getnames():
        path = os.path.join(out_dir, name)
        os.utime(path, (now, now))
    tar.close()


# Extract the cache for CTS runs.
if __name__ == '__main__':
    parser = argparse.ArgumentParser()

    # TODO(bclayton): Unused. Remove
    parser.add_argument('js_script', help='Path to gen_cache.js')

    parser.add_argument('out_dir', help='Output directory for the cache')
    args = parser.parse_args()

    gen_cache(args.out_dir)