# -*- coding: utf-8 -*-
#
# Copyright (C) 2019 Chris Caron <lead2gold@gmail.com>
# All rights reserved.
#
# This code is licensed under the MIT License.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files(the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions :
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

from unittest import mock

import requests
from json import dumps
from apprise import Apprise
from apprise.plugins.NotifyTwist import NotifyTwist
from helpers import AppriseURLTester

# Disable logging for a cleaner testing output
import logging
logging.disable(logging.CRITICAL)

# Our Testing URLs
apprise_url_tests = (
    ('twist://', {
        # Missing Email and Login
        'instance': None,
    }),
    ('twist://:@/', {
        'instance': None,
    }),
    ('twist://user@example.com/', {
        # No password
        'instance': None,
    }),
    ('twist://user@example.com/password', {
        # Password acceptable as first entry in path
        'instance': NotifyTwist,
        # Expected notify() response is False because internally we would
        # have failed to login
        'notify_response': False,
    }),
    ('twist://password:user1@example.com', {
        # password:login acceptable
        'instance': NotifyTwist,
        # Expected notify() response is False because internally we would
        # have failed to login
        'notify_response': False,

        # Our expected url(privacy=True) startswith() response:
        'privacy_url': 'twist://****:user1@example.com',
    }),
    ('twist://password:user2@example.com', {
        # password:login acceptable
        'instance': NotifyTwist,
        # Expected notify() response is False because internally we would
        # have logged in, but we would have failed to look up the #General
        # channel and workspace.
        'requests_response_text': {
            # Login expected response
            'id': 1234,
            'default_workspace': 9876,
        },
        'notify_response': False,
    }),
    ('twist://password:user2@example.com', {
        'instance': NotifyTwist,
        # throw a bizzare code forcing us to fail to look it up
        'response': False,
        'requests_response_code': 999,
    }),
    ('twist://password:user2@example.com', {
        'instance': NotifyTwist,
        # Throws a series of connection and transfer exceptions when this flag
        # is set and tests that we gracfully handle them
        'test_requests_exceptions': True,
    }),
)


def test_plugin_twist_urls():
    """
    NotifyTwist() Apprise URLs

    """

    # Run our general tests
    AppriseURLTester(tests=apprise_url_tests).run_all()


def test_plugin_twist_init():
    """
    NotifyTwist() init()

    """
    try:
        NotifyTwist(email='invalid', targets=None)
        assert False
    except TypeError:
        # Invalid email address
        assert True

    try:
        NotifyTwist(email='user@domain', targets=None)
        assert False
    except TypeError:
        # No password was specified
        assert True

    # Simple object initialization
    result = NotifyTwist(
        password='abc123', email='user@domain.com', targets=None)
    assert result.user == 'user'
    assert result.host == 'domain.com'
    assert result.password == 'abc123'

    # Channel Instantiation by name
    obj = Apprise.instantiate('twist://password:user@example.com/#Channel')
    assert isinstance(obj, NotifyTwist)

    # Channel Instantiation by id (faster if you know the translation)
    obj = Apprise.instantiate('twist://password:user@example.com/12345')
    assert isinstance(obj, NotifyTwist)

    # Invalid Channel - (max characters is 64), the below drops it
    obj = Apprise.instantiate(
        'twist://password:user@example.com/{}'.format('a' * 65))
    assert isinstance(obj, NotifyTwist)

    # No User detect
    result = NotifyTwist.parse_url('twist://example.com')
    assert result is None

    # test usage of to=
    result = NotifyTwist.parse_url(
        'twist://password:user@example.com?to=#channel')
    assert isinstance(result, dict)
    assert 'user' in result
    assert result['user'] == 'user'
    assert 'host' in result
    assert result['host'] == 'example.com'
    assert 'password' in result
    assert result['password'] == 'password'
    assert 'targets' in result
    assert isinstance(result['targets'], list) is True
    assert len(result['targets']) == 1
    assert '#channel' in result['targets']


@mock.patch('requests.get')
@mock.patch('requests.post')
def test_plugin_twist_auth(mock_post, mock_get):
    """
    NotifyTwist() login/logout()

    """

    # Prepare Mock
    mock_get.return_value = requests.Request()
    mock_post.return_value = requests.Request()
    mock_post.return_value.status_code = requests.codes.ok
    mock_get.return_value.status_code = requests.codes.ok
    mock_post.return_value.content = dumps({
        'token': '2e82c1e4e8b0091fdaa34ff3972351821406f796',
        'default_workspace': 12345,
    })
    mock_get.return_value.content = mock_post.return_value.content

    # Instantiate an object
    obj = Apprise.instantiate('twist://password:user@example.com/#Channel')
    assert isinstance(obj, NotifyTwist)
    # not logged in yet
    obj.logout()
    assert obj.login() is True

    # Clear our channel listing
    obj.channels.clear()
    # No channels mean there is no internal migration/lookups required
    assert obj._channel_migration() is True

    # Workspace Success
    mock_post.return_value.content = dumps([
        {
            'name': 'TesT',
            'id': 1,
        }, {
            'name': 'tESt2',
            'id': 2,
        },
    ])
    mock_get.return_value.content = mock_post.return_value.content

    results = obj.get_workspaces()
    assert len(results) == 2
    assert 'test' in results
    assert results['test'] == 1
    assert 'test2' in results
    assert results['test2'] == 2

    mock_post.return_value.content = dumps([
        {
            'name': 'ChaNNEL1',
            'id': 1,
        }, {
            'name': 'chaNNel2',
            'id': 2,
        },
    ])
    mock_get.return_value.content = mock_post.return_value.content
    results = obj.get_channels(wid=1)
    assert len(results) == 2
    assert 'channel1' in results
    assert results['channel1'] == 1
    assert 'channel2' in results
    assert results['channel2'] == 2

    # Test result failure response
    mock_post.return_value.status_code = 403
    mock_get.return_value.status_code = 403
    assert obj.get_workspaces() == dict()

    # Return things how they were
    mock_post.return_value.status_code = requests.codes.ok
    mock_get.return_value.status_code = requests.codes.ok

    # Forces call to logout:
    del obj

    #
    # Authentication failures
    #
    mock_post.return_value.status_code = 403
    mock_get.return_value.status_code = 403

    # Instantiate an object
    obj = Apprise.instantiate('twist://password:user@example.com/#Channel')
    assert isinstance(obj, NotifyTwist)

    # Authentication failed
    assert obj.get_workspaces() == dict()
    assert obj.get_channels(wid=1) == dict()
    assert obj._channel_migration() is False
    assert obj.send('body', 'title') is False

    obj = Apprise.instantiate('twist://password:user@example.com/#Channel')
    assert isinstance(obj, NotifyTwist)

    # Calling logout on an object already logged out
    obj.logout()


@mock.patch('requests.get')
@mock.patch('requests.post')
def test_plugin_twist_cache(mock_post, mock_get):
    """
    NotifyTwist() Cache Handling

    """

    def _response(url, *args, **kwargs):

        # Default configuration
        request = mock.Mock()
        request.status_code = requests.codes.ok
        request.content = '{}'

        if url.endswith('/login'):
            # Simulate a successful login
            request.content = dumps({
                'token': '2e82c1e4e8b0091fdaa34ff3972351821406f796',
                'default_workspace': 1,
            })

        elif url.endswith('workspaces/get'):
            request.content = dumps([
                {
                    'name': 'TeamA',
                    'id': 1,
                }, {
                    'name': 'TeamB',
                    'id': 2,
                },
            ])

        elif url.endswith('channels/get'):
            request.content = dumps([
                {
                    'name': 'ChanA',
                    'id': 1,
                }, {
                    'name': 'ChanB',
                    'id': 2,
                },
            ])

        return request

    mock_get.side_effect = _response
    mock_post.side_effect = _response

    # Instantiate an object
    obj = Apprise.instantiate(
        'twist://password:user@example.com/'
        '#ChanB/1:1/TeamA:ChanA/Ignore:Chan/3:1')
    assert isinstance(obj, NotifyTwist)

    # Will detect channels except Ignore:Chan
    assert obj._channel_migration() is False

    # Add another channel
    obj.channels.add('ChanB')
    assert obj._channel_migration() is True

    # Nothing more to detect the second time around
    assert obj._channel_migration() is True

    # Send a notification
    assert obj.send('body', 'title') is True

    def _can_not_send_response(url, *args, **kwargs):
        """
        Simulate a case where we can't send a notification
        """
        # Force a failure
        request = mock.Mock()
        request.status_code = 403
        request.content = '{}'
        return request

    mock_get.side_effect = _can_not_send_response
    mock_post.side_effect = _can_not_send_response

    # Send a notification and fail at it
    assert obj.send('body', 'title') is False


@mock.patch('requests.get')
@mock.patch('requests.post')
def test_plugin_twist_fetch(mock_post, mock_get):
    """
    NotifyTwist() fetch()

    fetch() is a wrapper that handles all kinds of edge cases and even
    attempts to re-authenticate to the Twist server if our token
    happens to expire.  This tests these edge cases

    """

    # Track our iteration; by tracing within an object, we can re-reference
    # it within a function scope.
    _cache = {
        'first_time': True,
    }

    def _reauth_response(url, *args, **kwargs):
        """
        Tests re-authentication process and then a successful
        retry
        """

        # Default configuration
        request = mock.Mock()
        request.status_code = requests.codes.ok

        # Simulate a successful login
        request.content = dumps({
            'token': '2e82c1e4e8b0091fdaa34ff3972351821406f796',
            'default_workspace': 12345,
        })

        if url.endswith('threads/add') and _cache['first_time'] is True:
            # First time iteration; act as if we failed; our second iteration
            # will not enter this and be successful. This is done by simply
            # toggling the first_time flag:
            _cache['first_time'] = False

            # otherwise, we set our first-time failure settings
            request.status_code = 403
            request.content = dumps({
                'error_code': 200,
                'error_string': 'Invalid token',
            })

        return request

    mock_get.side_effect = _reauth_response
    mock_post.side_effect = _reauth_response

    # Instantiate an object
    obj = Apprise.instantiate('twist://password:user@example.com/#Channel/34')
    assert isinstance(obj, NotifyTwist)

    # Simulate a re-authentication
    postokay, response = obj._fetch('threads/add')

    ##########################################################################
    _cache = {
        'first_time': True,
    }

    def _reauth_exception_response(url, *args, **kwargs):
        """
        Tests exception thrown after re-authentication process
        """

        # Default configuration
        request = mock.Mock()
        request.status_code = requests.codes.ok

        # Simulate a successful login
        request.content = dumps({
            'token': '2e82c1e4e8b0091fdaa34ff3972351821406f796',
            'default_workspace': 12345,
        })

        if url.endswith('threads/add') and _cache['first_time'] is True:
            # First time iteration; act as if we failed; our second iteration
            # will not enter this and be successful. This is done by simply
            # toggling the first_time flag:
            _cache['first_time'] = False

            # otherwise, we set our first-time failure settings
            request.status_code = 403
            request.content = dumps({
                'error_code': 200,
                'error_string': 'Invalid token',
            })

        elif url.endswith('threads/add') and _cache['first_time'] is False:
            # unparseable response throws the exception
            request.status_code = 200
            request.content = '{'

        return request

    mock_get.side_effect = _reauth_exception_response
    mock_post.side_effect = _reauth_exception_response

    # Instantiate an object
    obj = Apprise.instantiate('twist://password:user@example.com/#Channel/34')
    assert isinstance(obj, NotifyTwist)

    # Simulate a re-authentication
    postokay, response = obj._fetch('threads/add')

    ##########################################################################
    _cache = {
        'first_time': True,
    }

    def _reauth_failed_response(url, *args, **kwargs):
        """
        Tests re-authentication process and have it not succeed
        """

        # Default configuration
        request = mock.Mock()
        request.status_code = requests.codes.ok

        # Simulate a successful login
        request.content = dumps({
            'token': '2e82c1e4e8b0091fdaa34ff3972351821406f796',
            'default_workspace': 12345,
        })

        if url.endswith('threads/add') and _cache['first_time'] is True:
            # First time iteration; act as if we failed; our second iteration
            # will not enter this and be successful. This is done by simply
            # toggling the first_time flag:
            _cache['first_time'] = False

            # otherwise, we set our first-time failure settings
            request.status_code = 403
            request.content = dumps({
                'error_code': 200,
                'error_string': 'Invalid token',
            })

        elif url.endswith('/login') and _cache['first_time'] is False:
            # Fail to login
            request.status_code = 403
            request.content = '{}'

        return request

    mock_get.side_effect = _reauth_failed_response
    mock_post.side_effect = _reauth_failed_response

    # Instantiate an object
    obj = Apprise.instantiate('twist://password:user@example.com/#Channel/34')
    assert isinstance(obj, NotifyTwist)

    # Simulate a re-authentication
    postokay, response = obj._fetch('threads/add')

    def _unparseable_json_response(url, *args, **kwargs):

        # Default configuration
        request = mock.Mock()
        request.status_code = requests.codes.ok
        request.content = '{'
        return request

    mock_get.side_effect = _unparseable_json_response
    mock_post.side_effect = _unparseable_json_response

    # Instantiate our object
    obj = Apprise.instantiate('twist://password:user@example.com/#Channel/34')
    assert isinstance(obj, NotifyTwist)

    # Simulate a re-authentication
    postokay, response = obj._fetch('threads/add')
    assert postokay is True
    # When we can't parse the content, we still default to an empty
    # dictionary
    assert response == {}