# coding: utf-8
#
# Copyright 2011 Yesudeep Mangalapilly <yesudeep@gmail.com>
# Copyright 2012 Google, Inc & contributors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from watchdog.events import (
    FileDeletedEvent,
    FileModifiedEvent,
    FileCreatedEvent,
    DirDeletedEvent,
    DirModifiedEvent,
    DirCreatedEvent,
    FileMovedEvent,
    DirMovedEvent,
    PatternMatchingEventHandler,
    EVENT_TYPE_MODIFIED,
    EVENT_TYPE_CREATED,
    EVENT_TYPE_DELETED,
    EVENT_TYPE_MOVED,
)
from watchdog.utils.patterns import filter_paths

path_1 = '/path/xyz'
path_2 = '/path/abc'
g_allowed_patterns = ["*.py", "*.txt"]
g_ignore_patterns = ["*.foo"]


def assert_patterns(event):
    if hasattr(event, 'dest_path'):
        paths = [event.src_path, event.dest_path]
    else:
        paths = [event.src_path]
    filtered_paths = filter_paths(
        paths,
        included_patterns=['*.py', '*.txt'],
        excluded_patterns=["*.pyc"],
        case_sensitive=False)
    assert filtered_paths


def test_dispatch():
    # Utilities.
    patterns = ['*.py', '*.txt']
    ignore_patterns = ["*.pyc"]

    dir_del_event_match = DirDeletedEvent('/path/blah.py')
    dir_del_event_not_match = DirDeletedEvent('/path/foobar')
    dir_del_event_ignored = DirDeletedEvent('/path/foobar.pyc')
    file_del_event_match = FileDeletedEvent('/path/blah.txt')
    file_del_event_not_match = FileDeletedEvent('/path/foobar')
    file_del_event_ignored = FileDeletedEvent('/path/blah.pyc')

    dir_cre_event_match = DirCreatedEvent('/path/blah.py')
    dir_cre_event_not_match = DirCreatedEvent('/path/foobar')
    dir_cre_event_ignored = DirCreatedEvent('/path/foobar.pyc')
    file_cre_event_match = FileCreatedEvent('/path/blah.txt')
    file_cre_event_not_match = FileCreatedEvent('/path/foobar')
    file_cre_event_ignored = FileCreatedEvent('/path/blah.pyc')

    dir_mod_event_match = DirModifiedEvent('/path/blah.py')
    dir_mod_event_not_match = DirModifiedEvent('/path/foobar')
    dir_mod_event_ignored = DirModifiedEvent('/path/foobar.pyc')
    file_mod_event_match = FileModifiedEvent('/path/blah.txt')
    file_mod_event_not_match = FileModifiedEvent('/path/foobar')
    file_mod_event_ignored = FileModifiedEvent('/path/blah.pyc')

    dir_mov_event_match = DirMovedEvent('/path/blah.py', '/path/blah')
    dir_mov_event_not_match = DirMovedEvent('/path/foobar', '/path/blah')
    dir_mov_event_ignored = DirMovedEvent('/path/foobar.pyc', '/path/blah')
    file_mov_event_match = FileMovedEvent('/path/blah.txt', '/path/blah')
    file_mov_event_not_match = FileMovedEvent('/path/foobar', '/path/blah')
    file_mov_event_ignored = FileMovedEvent('/path/blah.pyc', '/path/blah')

    all_dir_events = [
        dir_mod_event_match,
        dir_mod_event_not_match,
        dir_mod_event_ignored,
        dir_del_event_match,
        dir_del_event_not_match,
        dir_del_event_ignored,
        dir_cre_event_match,
        dir_cre_event_not_match,
        dir_cre_event_ignored,
        dir_mov_event_match,
        dir_mov_event_not_match,
        dir_mov_event_ignored,
    ]
    all_file_events = [
        file_mod_event_match,
        file_mod_event_not_match,
        file_mod_event_ignored,
        file_del_event_match,
        file_del_event_not_match,
        file_del_event_ignored,
        file_cre_event_match,
        file_cre_event_not_match,
        file_cre_event_ignored,
        file_mov_event_match,
        file_mov_event_not_match,
        file_mov_event_ignored,
    ]
    all_events = all_file_events + all_dir_events

    def assert_check_directory(handler, event):
        assert not (handler.ignore_directories and event.is_directory)

    class TestableEventHandler(PatternMatchingEventHandler):

        def on_any_event(self, event):
            assert_check_directory(self, event)

        def on_modified(self, event):
            assert_check_directory(self, event)
            assert event.event_type == EVENT_TYPE_MODIFIED
            assert_patterns(event)

        def on_deleted(self, event):
            assert_check_directory(self, event)
            assert event.event_type == EVENT_TYPE_DELETED
            assert_patterns(event)

        def on_moved(self, event):
            assert_check_directory(self, event)
            assert event.event_type == EVENT_TYPE_MOVED
            assert_patterns(event)

        def on_created(self, event):
            assert_check_directory(self, event)
            assert event.event_type == EVENT_TYPE_CREATED
            assert_patterns(event)

    no_dirs_handler = TestableEventHandler(patterns=patterns,
                                           ignore_patterns=ignore_patterns,
                                           ignore_directories=True)
    handler = TestableEventHandler(patterns=patterns,
                                   ignore_patterns=ignore_patterns,
                                   ignore_directories=False)

    for event in all_events:
        no_dirs_handler.dispatch(event)
    for event in all_events:
        handler.dispatch(event)


def test_handler():
    handler1 = PatternMatchingEventHandler(g_allowed_patterns,
                                           g_ignore_patterns, True)
    handler2 = PatternMatchingEventHandler(g_allowed_patterns,
                                           g_ignore_patterns, False)
    assert handler1.patterns == g_allowed_patterns
    assert handler1.ignore_patterns == g_ignore_patterns
    assert handler1.ignore_directories
    assert not handler2.ignore_directories


def test_ignore_directories():
    handler1 = PatternMatchingEventHandler(g_allowed_patterns,
                                           g_ignore_patterns, True)
    handler2 = PatternMatchingEventHandler(g_allowed_patterns,
                                           g_ignore_patterns, False)
    assert handler1.ignore_directories
    assert not handler2.ignore_directories


def test_ignore_patterns():
    handler1 = PatternMatchingEventHandler(g_allowed_patterns,
                                           g_ignore_patterns, True)
    assert handler1.ignore_patterns == g_ignore_patterns


def test_patterns():
    handler1 = PatternMatchingEventHandler(g_allowed_patterns,
                                           g_ignore_patterns, True)
    assert handler1.patterns == g_allowed_patterns