# Copyright (c) 2010 Google Inc. All rights reserved.
# Copyright (c) 2009 Apple Inc. 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.
#     * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# 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
# OWNER 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.
#
# A tool for automating dealing with bugzilla, posting patches, committing patches, etc.

from optparse import make_option
import os
import threading

from webkitpy.common.checkout.api import Checkout
from webkitpy.common.checkout.scm import default_scm
from webkitpy.common.config.ports import WebKitPort
from webkitpy.common.net.bugzilla import Bugzilla
from webkitpy.common.net.buildbot import BuildBot
from webkitpy.common.net.irc.ircproxy import IRCProxy
from webkitpy.common.net.statusserver import StatusServer
from webkitpy.common.system import executive, filesystem, platforminfo, user, workspace
from webkitpy.layout_tests import port
from webkitpy.tool.multicommandtool import MultiCommandTool
import webkitpy.tool.commands as commands


class WebKitPatch(MultiCommandTool):
    global_options = [
        make_option("-v", "--verbose", action="store_true", dest="verbose", default=False, help="enable all logging"),
        make_option("-d", "--directory", action="append", dest="patch_directories", default=[], help="Directory to look at for changed files"),
        make_option("--dry-run", action="store_true", dest="dry_run", default=False, help="do not touch remote servers"),
        make_option("--status-host", action="store", dest="status_host", type="string", help="Hostname (e.g. localhost or commit.webkit.org) where status updates should be posted."),
        make_option("--bot-id", action="store", dest="bot_id", type="string", help="Identifier for this bot (if multiple bots are running for a queue)"),
        make_option("--irc-password", action="store", dest="irc_password", type="string", help="Password to use when communicating via IRC."),
        make_option("--port", action="store", dest="port", default=None, help="Specify a port (e.g., mac, qt, gtk, ...)."),
    ]

    def __init__(self, path):
        MultiCommandTool.__init__(self)

        self._path = path
        self.wakeup_event = threading.Event()
        # FIXME: All of these shared objects should move off onto a
        # separate "Tool" object.  WebKitPatch should inherit from
        # "Tool" and all these objects should use getters/setters instead of
        # manual getter functions (e.g. scm()).
        self.bugs = Bugzilla()
        self.buildbot = BuildBot()
        self.executive = executive.Executive()
        self._irc = None
        self.filesystem = filesystem.FileSystem()
        self.workspace = workspace.Workspace(self.filesystem, self.executive)
        self._port = None
        self.user = user.User()
        self._scm = None
        self._checkout = None
        self.status_server = StatusServer()
        self.port_factory = port.factory
        self.platform = platforminfo.PlatformInfo()

    def scm(self):
        # Lazily initialize SCM to not error-out before command line parsing (or when running non-scm commands).
        if not self._scm:
            self._scm = default_scm(self._options.patch_directories)
        return self._scm

    def checkout(self):
        if not self._checkout:
            self._checkout = Checkout(self.scm())
        return self._checkout

    def port(self):
        return self._port

    def ensure_irc_connected(self, irc_delegate):
        if not self._irc:
            self._irc = IRCProxy(irc_delegate)

    def irc(self):
        # We don't automatically construct IRCProxy here because constructing
        # IRCProxy actually connects to IRC.  We want clients to explicitly
        # connect to IRC.
        return self._irc

    def path(self):
        return self._path

    def command_completed(self):
        if self._irc:
            self._irc.disconnect()

    def should_show_in_main_help(self, command):
        if not command.show_in_main_help:
            return False
        if command.requires_local_commits:
            return self.scm().supports_local_commits()
        return True

    # FIXME: This may be unnecessary since we pass global options to all commands during execute() as well.
    def handle_global_options(self, options):
        self._options = options
        if options.dry_run:
            self.scm().dryrun = True
            self.bugs.dryrun = True
        if options.status_host:
            self.status_server.set_host(options.status_host)
        if options.bot_id:
            self.status_server.set_bot_id(options.bot_id)
        if options.irc_password:
            self.irc_password = options.irc_password
        # If options.port is None, we'll get the default port for this platform.
        self._port = WebKitPort.port(options.port)

    def should_execute_command(self, command):
        if command.requires_local_commits and not self.scm().supports_local_commits():
            failure_reason = "%s requires local commits using %s in %s." % (command.name, self.scm().display_name(), self.scm().checkout_root)
            return (False, failure_reason)
        return (True, None)