# Copyright (c) 2010 Google Inc. All rights reserved.
#
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# modification, are permitted provided that the following conditions are
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# notice, this list of conditions and the following disclaimer.
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# in the documentation and/or other materials provided with the
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# contributors may be used to endorse or promote products derived from
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import os
import re
import stat

import webkitpy.common.config as config
from webkitpy.common.system.deprecated_logging import log
from webkitpy.common.system.executive import ScriptError
import webkitpy.thirdparty.autoinstalled.rietveld.upload as upload


def parse_codereview_issue(message):
    if not message:
        return None
    match = re.search(config.codereview_server_regex +
                      "(?P<codereview_issue>\d+)",
                      message)
    if match:
        return int(match.group('codereview_issue'))


class Rietveld(object):
    def __init__(self, executive, dryrun=False):
        self.dryrun = dryrun
        self._executive = executive
        self._upload_py = upload.__file__
        # Chop off the last character so we modify permissions on the py file instead of the pyc.
        if os.path.splitext(self._upload_py)[1] == ".pyc":
            self._upload_py = self._upload_py[:-1]
        os.chmod(self._upload_py, os.stat(self._upload_py).st_mode | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH)

    def url_for_issue(self, codereview_issue):
        if not codereview_issue:
            return None
        return "%s%s" % (config.codereview_server_url, codereview_issue)

    def post(self, message=None, codereview_issue=None, cc=None):
        if not message:
            raise ScriptError("Rietveld requires a message.")

        args = [
            self._upload_py,
            "--assume_yes",
            "--server=%s" % config.codereview_server_host,
            "--message=%s" % message,
        ]
        if codereview_issue:
            args.append("--issue=%s" % codereview_issue)
        if cc:
            args.append("--cc=%s" % cc)

        if self.dryrun:
            log("Would have run %s" % args)
            return

        output = self._executive.run_and_throw_if_fail(args)
        match = re.search("Issue created\. URL: " +
                          config.codereview_server_regex +
                          "(?P<codereview_issue>\d+)",
                          output)
        if match:
            return int(match.group('codereview_issue'))