# -*- coding: utf-8 -*-
# Copyright (c) 2019, Compiler Explorer Authors
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#     * Redistributions of source code must retain the above copyright notice,
#       this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

import subprocess
import re

date_placeholder = '(<span id="last-changed">).*(</span>)'
date_placeholder_regex = re.compile(date_placeholder)


def check_policy_file(police_name):
    policy_path = f"static/policies/{police_name}.html"
    policy_last_time = subprocess.check_output(['git', 'log', '-1', '--format=%cd', policy_path]).decode('utf-8').rstrip()

    if len(policy_last_time) == 0:
        print(f'No need to update {policy_path}')
        return
    policy_last_commit = subprocess.check_output(['git', 'log', '-1', '--format=%h', policy_path]).decode('utf-8').rstrip()
    print(f'Setting policy {policy_path} last updated time to {policy_last_time} with commit {policy_last_commit}')
    f = open(policy_path, 'r')
    file_lines = f.readlines()
    f.close()
    with open(policy_path, 'w') as f:
        for line in file_lines:
            if re.match(date_placeholder_regex, line):
                f.write(re.sub(date_placeholder_regex, f'\\1Last changed on: <time id="changed-date" datetime="{policy_last_time}">{policy_last_time}</time> <i>(<a href="https://github.com/compiler-explorer/compiler-explorer/commit/{policy_last_commit}" target="_blank">diff</a>)</i>\\2', line))
            else:
                f.write(line)


if __name__ == '__main__':
    check_policy_file('privacy')
    check_policy_file('cookies')