#!/usr/bin/env python
# Copyright 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import os
import subprocess
import json
import sys

import ninjalog_uploader

THIS_DIR = os.path.dirname(__file__)
UPLOADER = os.path.join(THIS_DIR, 'ninjalog_uploader.py')
CONFIG = os.path.join(THIS_DIR, 'ninjalog.cfg')
VERSION = 2


def LoadConfig():
    if os.path.isfile(CONFIG):
        with open(CONFIG, 'rb') as f:
            config = json.load(f)
            if config['version'] == VERSION:
                config['countdown'] = max(0, config['countdown'] - 1)
                return config

    return {
        'is-googler': ninjalog_uploader.IsGoogler(
            'chromium-build-stats.appspot.com'),
        'countdown': 10,
        'version': VERSION,
    }


def SaveConfig(config):
    with open(CONFIG, 'wb') as f:
        json.dump(config, f)


def ShowMessage(countdown):
    whitelisted = '\n'.join(['  * %s' % config for config in
                             ninjalog_uploader.WHITELISTED_CONFIGS])
    print """
Your ninjalog will be uploaded to build stats server. The uploaded log will be
used to analyze user side build performance.

The following information will be uploaded with ninjalog.
* OS (e.g. Win, Mac or Linux)
* number of cpu cores of building machine
* build targets (e.g. chrome, browser_tests)
* parallelism passed by -j flag
* following build configs
%s

Uploading ninjalog will be started after you run autoninja another %d time.

If you don't want to upload ninjalog, please run following command.
$ %s opt-out

If you want to allow upload ninjalog from next autoninja run, please run the
following command.
$ %s opt-in

If you have questions about this, please send mail to infra-dev@chromium.org

You can find a more detailed explanation in
%s

""" % (whitelisted, countdown, __file__, __file__,
       os.path.abspath(os.path.join(THIS_DIR, "ninjalog.README.md")))


def main():
    config = LoadConfig()

    if len(sys.argv) == 2 and sys.argv[1] == 'opt-in':
        config['opt-in'] = True
        config['countdown'] = 0
        SaveConfig(config)
        print('ninjalog upload is opted in.')
        return 0

    if len(sys.argv) == 2 and sys.argv[1] == 'opt-out':
        config['opt-in'] = False
        SaveConfig(config)
        print('ninjalog upload is opted out.')
        return 0

    if 'opt-in' in config and not config['opt-in']:
        # Upload is opted out.
        return 0

    if not config.get("is-googler", False):
        # Not googler.
        return 0

    if config.get("countdown", 0) > 0:
        # Need to show message.
        ShowMessage(config["countdown"])
        # Only save config if something has meaningfully changed.
        SaveConfig(config)
        return 0

    if len(sys.argv) == 1:
        # dry-run for debugging.
        print("upload ninjalog dry-run")
        return 0

    # Run upload script without wait.
    devnull = open(os.devnull, "w")
    subprocess.Popen([sys.executable, UPLOADER] + sys.argv[1:],
                     stdout=devnull, stderr=devnull)


if __name__ == '__main__':
    sys.exit(main())