# Copyright (C) 2009 Google 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.

import os
import threading

from webkitpy.common.config.committers import CommitterList, Reviewer
from webkitpy.common.checkout.commitinfo import CommitInfo
from webkitpy.common.checkout.scm import CommitMessage
from webkitpy.common.net.bugzilla import Bug, Attachment
from webkitpy.common.net.rietveld import Rietveld
from webkitpy.thirdparty.mock import Mock
from webkitpy.common.system.deprecated_logging import log


def _id_to_object_dictionary(*objects):
    dictionary = {}
    for thing in objects:
        dictionary[thing["id"]] = thing
    return dictionary

# Testing

# FIXME: The ids should be 1, 2, 3 instead of crazy numbers.


_patch1 = {
    "id": 197,
    "bug_id": 42,
    "url": "http://example.com/197",
    "name": "Patch1",
    "is_obsolete": False,
    "is_patch": True,
    "review": "+",
    "reviewer_email": "foo@bar.com",
    "commit-queue": "+",
    "committer_email": "foo@bar.com",
    "attacher_email": "Contributer1",
}


_patch2 = {
    "id": 128,
    "bug_id": 42,
    "url": "http://example.com/128",
    "name": "Patch2",
    "is_obsolete": False,
    "is_patch": True,
    "review": "+",
    "reviewer_email": "foo@bar.com",
    "commit-queue": "+",
    "committer_email": "non-committer@example.com",
    "attacher_email": "eric@webkit.org",
}


_patch3 = {
    "id": 103,
    "bug_id": 75,
    "url": "http://example.com/103",
    "name": "Patch3",
    "is_obsolete": False,
    "is_patch": True,
    "review": "?",
    "attacher_email": "eric@webkit.org",
}


_patch4 = {
    "id": 104,
    "bug_id": 77,
    "url": "http://example.com/103",
    "name": "Patch3",
    "is_obsolete": False,
    "is_patch": True,
    "review": "+",
    "commit-queue": "?",
    "reviewer_email": "foo@bar.com",
    "attacher_email": "Contributer2",
}


_patch5 = {
    "id": 105,
    "bug_id": 77,
    "url": "http://example.com/103",
    "name": "Patch5",
    "is_obsolete": False,
    "is_patch": True,
    "review": "+",
    "reviewer_email": "foo@bar.com",
    "attacher_email": "eric@webkit.org",
}


_patch6 = { # Valid committer, but no reviewer.
    "id": 106,
    "bug_id": 77,
    "url": "http://example.com/103",
    "name": "ROLLOUT of r3489",
    "is_obsolete": False,
    "is_patch": True,
    "commit-queue": "+",
    "committer_email": "foo@bar.com",
    "attacher_email": "eric@webkit.org",
}


_patch7 = { # Valid review, patch is marked obsolete.
    "id": 107,
    "bug_id": 76,
    "url": "http://example.com/103",
    "name": "Patch7",
    "is_obsolete": True,
    "is_patch": True,
    "review": "+",
    "reviewer_email": "foo@bar.com",
    "attacher_email": "eric@webkit.org",
}


# This matches one of Bug.unassigned_emails
_unassigned_email = "webkit-unassigned@lists.webkit.org"


# FIXME: The ids should be 1, 2, 3 instead of crazy numbers.


_bug1 = {
    "id": 42,
    "title": "Bug with two r+'d and cq+'d patches, one of which has an "
             "invalid commit-queue setter.",
    "assigned_to_email": _unassigned_email,
    "attachments": [_patch1, _patch2],
}


_bug2 = {
    "id": 75,
    "title": "Bug with a patch needing review.",
    "assigned_to_email": "foo@foo.com",
    "attachments": [_patch3],
}


_bug3 = {
    "id": 76,
    "title": "The third bug",
    "assigned_to_email": _unassigned_email,
    "attachments": [_patch7],
}


_bug4 = {
    "id": 77,
    "title": "The fourth bug",
    "assigned_to_email": "foo@foo.com",
    "attachments": [_patch4, _patch5, _patch6],
}


class MockBuilder(object):

    def name(self):
        return "Mock builder name (Tests)"


mock_builder = MockBuilder()


class MockBugzillaQueries(Mock):

    def __init__(self, bugzilla):
        Mock.__init__(self)
        self._bugzilla = bugzilla

    def _all_bugs(self):
        return map(lambda bug_dictionary: Bug(bug_dictionary, self._bugzilla),
                   self._bugzilla.bug_cache.values())

    def fetch_bug_ids_from_commit_queue(self):
        bugs_with_commit_queued_patches = filter(
                lambda bug: bug.commit_queued_patches(),
                self._all_bugs())
        return map(lambda bug: bug.id(), bugs_with_commit_queued_patches)

    def fetch_attachment_ids_from_review_queue(self):
        unreviewed_patches = sum([bug.unreviewed_patches()
                                  for bug in self._all_bugs()], [])
        return map(lambda patch: patch.id(), unreviewed_patches)

    def fetch_patches_from_commit_queue(self):
        return sum([bug.commit_queued_patches()
                    for bug in self._all_bugs()], [])

    def fetch_bug_ids_from_pending_commit_list(self):
        bugs_with_reviewed_patches = filter(lambda bug: bug.reviewed_patches(),
                                            self._all_bugs())
        bug_ids = map(lambda bug: bug.id(), bugs_with_reviewed_patches)
        # NOTE: This manual hack here is to allow testing logging in
        # test_assign_to_committer the real pending-commit query on bugzilla
        # will return bugs with patches which have r+, but are also obsolete.
        return bug_ids + [76]

    def fetch_patches_from_pending_commit_list(self):
        return sum([bug.reviewed_patches() for bug in self._all_bugs()], [])


# FIXME: Bugzilla is the wrong Mock-point.  Once we have a BugzillaNetwork
#        class we should mock that instead.
# Most of this class is just copy/paste from Bugzilla.


class MockBugzilla(Mock):

    bug_server_url = "http://example.com"

    bug_cache = _id_to_object_dictionary(_bug1, _bug2, _bug3, _bug4)

    attachment_cache = _id_to_object_dictionary(_patch1,
                                                _patch2,
                                                _patch3,
                                                _patch4,
                                                _patch5,
                                                _patch6,
                                                _patch7)

    def __init__(self):
        Mock.__init__(self)
        self.queries = MockBugzillaQueries(self)
        self.committers = CommitterList(reviewers=[Reviewer("Foo Bar",
                                                            "foo@bar.com")])

    def create_bug(self,
                   bug_title,
                   bug_description,
                   component=None,
                   diff=None,
                   patch_description=None,
                   cc=None,
                   blocked=None,
                   mark_for_review=False,
                   mark_for_commit_queue=False):
        log("MOCK create_bug")
        log("bug_title: %s" % bug_title)
        log("bug_description: %s" % bug_description)

    def quips(self):
        return ["Good artists copy. Great artists steal. - Pablo Picasso"]

    def fetch_bug(self, bug_id):
        return Bug(self.bug_cache.get(bug_id), self)

    def fetch_attachment(self, attachment_id):
        # This could be changed to .get() if we wish to allow failed lookups.
        attachment_dictionary = self.attachment_cache[attachment_id]
        bug = self.fetch_bug(attachment_dictionary["bug_id"])
        for attachment in bug.attachments(include_obsolete=True):
            if attachment.id() == int(attachment_id):
                return attachment

    def bug_url_for_bug_id(self, bug_id):
        return "%s/%s" % (self.bug_server_url, bug_id)

    def fetch_bug_dictionary(self, bug_id):
        return self.bug_cache.get(bug_id)

    def attachment_url_for_id(self, attachment_id, action="view"):
        action_param = ""
        if action and action != "view":
            action_param = "&action=%s" % action
        return "%s/%s%s" % (self.bug_server_url, attachment_id, action_param)

    def post_comment_to_bug(self, bug_id, comment_text, cc=None):
        log("MOCK bug comment: bug_id=%s, cc=%s\n--- Begin comment ---\%s\n--- End comment ---\n" % (
            bug_id, cc, comment_text))

    def add_patch_to_bug(self,
                         bug_id,
                         diff,
                         description,
                         comment_text=None,
                         mark_for_review=False,
                         mark_for_commit_queue=False,
                         mark_for_landing=False):
        log("MOCK add_patch_to_bug: bug_id=%s, description=%s, mark_for_review=%s, mark_for_commit_queue=%s, mark_for_landing=%s" %
            (bug_id, description, mark_for_review, mark_for_commit_queue, mark_for_landing))
        log("-- Begin comment --")
        log(comment_text)
        log("-- End comment --")


class MockBuilder(object):
    def __init__(self, name):
        self._name = name

    def force_build(self, username, comments):
        log("MOCK: force_build: name=%s, username=%s, comments=%s" % (
            self._name, username, comments))


class MockBuildBot(object):
    def __init__(self):
        self._mock_builder1_status = {
            "name": "Builder1",
            "is_green": True,
            "activity": "building",
        }
        self._mock_builder2_status = {
            "name": "Builder2",
            "is_green": True,
            "activity": "idle",
        }

    def builder_with_name(self, name):
        return MockBuilder(name)

    def builder_statuses(self):
        return [
            self._mock_builder1_status,
            self._mock_builder2_status,
        ]

    def red_core_builders_names(self):
        if not self._mock_builder2_status["is_green"]:
            return [self._mock_builder2_status["name"]]
        return []

    def red_core_builders(self):
        if not self._mock_builder2_status["is_green"]:
            return [self._mock_builder2_status]
        return []

    def idle_red_core_builders(self):
        if not self._mock_builder2_status["is_green"]:
            return [self._mock_builder2_status]
        return []

    def last_green_revision(self):
        return 9479

    def light_tree_on_fire(self):
        self._mock_builder2_status["is_green"] = False

    def revisions_causing_failures(self):
        return {
            "29837": [mock_builder]
        }


class MockSCM(Mock):

    fake_checkout_root = os.path.realpath("/tmp") # realpath is needed to allow for Mac OS X's /private/tmp

    def __init__(self):
        Mock.__init__(self)
        # FIXME: We should probably use real checkout-root detection logic here.
        # os.getcwd() can't work here because other parts of the code assume that "checkout_root"
        # will actually be the root.  Since getcwd() is wrong, use a globally fake root for now.
        self.checkout_root = self.fake_checkout_root

    def create_patch(self, git_commit, squash):
        return "Patch1"

    def commit_ids_from_commitish_arguments(self, args):
        return ["Commitish1", "Commitish2"]

    def commit_message_for_local_commit(self, commit_id):
        if commit_id == "Commitish1":
            return CommitMessage("CommitMessage1\n" \
                "https://bugs.example.org/show_bug.cgi?id=42\n")
        if commit_id == "Commitish2":
            return CommitMessage("CommitMessage2\n" \
                "https://bugs.example.org/show_bug.cgi?id=75\n")
        raise Exception("Bogus commit_id in commit_message_for_local_commit.")

    def diff_for_revision(self, revision):
        return "DiffForRevision%s\n" \
               "http://bugs.webkit.org/show_bug.cgi?id=12345" % revision

    def svn_revision_from_commit_text(self, commit_text):
        return "49824"


class MockCheckout(object):

    _committer_list = CommitterList()

    def commit_info_for_revision(self, svn_revision):
        return CommitInfo(svn_revision, "eric@webkit.org", {
            "bug_id": 42,
            "author_name": "Adam Barth",
            "author_email": "abarth@webkit.org",
            "author": self._committer_list.committer_by_email("abarth@webkit.org"),
            "reviewer_text": "Darin Adler",
            "reviewer": self._committer_list.committer_by_name("Darin Adler"),
        })

    def bug_id_for_revision(self, svn_revision):
        return 12345

    def modified_changelogs(self, git_commit, squash):
        # Ideally we'd return something more interesting here.  The problem is
        # that LandDiff will try to actually read the patch from disk!
        return []

    def commit_message_for_this_commit(self, git_commit, squash):
        commit_message = Mock()
        commit_message.message = lambda:"This is a fake commit message that is at least 50 characters."
        return commit_message

    def apply_patch(self, patch, force=False):
        pass

    def apply_reverse_diff(self, revision):
        pass


class MockUser(object):

    @staticmethod
    def prompt(message, repeat=1, raw_input=raw_input):
        return "Mock user response"

    def edit(self, files):
        pass

    def page(self, message):
        pass

    def confirm(self, message=None):
        return True

    def open_url(self, url):
        if url.startswith("file://"):
            log("MOCK: user.open_url: file://...")
            return
        log("MOCK: user.open_url: %s" % url)


class MockIRC(object):

    def post(self, message):
        log("MOCK: irc.post: %s" % message)

    def disconnect(self):
        log("MOCK: irc.disconnect")


class MockStatusServer(object):

    def __init__(self):
        self.host = "example.com"

    def patch_status(self, queue_name, patch_id):
        return None

    def svn_revision(self, svn_revision):
        return None

    def update_status(self, queue_name, status, patch=None, results_file=None):
        return 187

    def update_svn_revision(self, svn_revision, broken_bot):
        return 191


class MockExecute(Mock):
    def run_and_throw_if_fail(self, args, quiet=False):
        return "MOCK output of child process"

    def run_command(self,
                    args,
                    cwd=None,
                    input=None,
                    error_handler=None,
                    return_exit_code=False,
                    return_stderr=True,
                    decode_output=False):
        return "MOCK output of child process"


class MockTool():

    def __init__(self, log_executive=False):
        self.wakeup_event = threading.Event()
        self.bugs = MockBugzilla()
        self.buildbot = MockBuildBot()
        self.executive = MockExecute()
        if log_executive:
            self.executive.run_and_throw_if_fail = lambda args: log("MOCK run_and_throw_if_fail: %s" % args)
        self._irc = None
        self.user = MockUser()
        self._scm = MockSCM()
        self._checkout = MockCheckout()
        self.status_server = MockStatusServer()
        self.irc_password = "MOCK irc password"
        self.codereview = Rietveld(self.executive)

    def scm(self):
        return self._scm

    def checkout(self):
        return self._checkout

    def ensure_irc_connected(self, delegate):
        if not self._irc:
            self._irc = MockIRC()

    def irc(self):
        return self._irc

    def path(self):
        return "echo"