# -*- coding: utf-8 -*-
# BSD 2-Clause License
#
# Apprise - Push Notification Library.
# Copyright (c) 2024, Chris Caron <lead2gold@gmail.com>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
#    this list of conditions and the following disclaimer.
#
# 2. 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.
#
# 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 HOLDER 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
from unittest import mock

import requests

from apprise.plugins.NotifyMailgun import NotifyMailgun
from helpers import AppriseURLTester
from apprise import Apprise
from apprise import AppriseAttachment
from apprise import NotifyType

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

# Attachment Directory
TEST_VAR_DIR = os.path.join(os.path.dirname(__file__), 'var')

# Our Testing URLs
apprise_url_tests = (
    ('mailgun://', {
        'instance': TypeError,
    }),
    ('mailgun://:@/', {
        'instance': TypeError,
    }),
    # No Token specified
    ('mailgun://user@localhost.localdomain', {
        'instance': TypeError,
    }),
    # Token is valid, but no user name specified
    ('mailgun://localhost.localdomain/{}-{}-{}'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
        'instance': TypeError,
    }),
    # Invalid from email address
    ('mailgun://"@localhost.localdomain/{}-{}-{}'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
        'instance': TypeError,
    }),
    # No To email address, but everything else is valid
    ('mailgun://user@localhost.localdomain/{}-{}-{}'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
        'instance': NotifyMailgun,
    }),
    ('mailgun://user@localhost.localdomain/{}-{}-{}?format=markdown'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
        'instance': NotifyMailgun,
    }),
    ('mailgun://user@localhost.localdomain/{}-{}-{}?format=html'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
        'instance': NotifyMailgun,
    }),
    ('mailgun://user@localhost.localdomain/{}-{}-{}?format=text'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
        'instance': NotifyMailgun,
    }),
    # valid url with region specified (case insensitve)
    ('mailgun://user@localhost.localdomain/{}-{}-{}?region=uS'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
            'instance': NotifyMailgun,
    }),
    # valid url with region specified (case insensitve)
    ('mailgun://user@localhost.localdomain/{}-{}-{}?region=EU'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
            'instance': NotifyMailgun,
    }),
    # invalid url with region specified (case insensitve)
    ('mailgun://user@localhost.localdomain/{}-{}-{}?region=invalid'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
            'instance': TypeError,
    }),
    # Use of both 'name' and 'from' together; these are synonymous
    ('mailgun://user@localhost.localdomain/{}-{}-{}?'
     'from=jack@gmail.com&name=Jason<jason@gmail.com>'.format(
         'a' * 32, 'b' * 8, 'c' * 8), {
             'instance': NotifyMailgun}),

    # headers
    ('mailgun://user@localhost.localdomain/{}-{}-{}'
        '?+X-Customer-Campaign-ID=Apprise'.format(
            'a' * 32, 'b' * 8, 'c' * 8), {
                'instance': NotifyMailgun,
        }),
    # template tokens
    ('mailgun://user@localhost.localdomain/{}-{}-{}'
        '?:name=Chris&:status=admin'.format(
            'a' * 32, 'b' * 8, 'c' * 8), {
                'instance': NotifyMailgun,
        }),
    # We can use the `from=` directive as well:
    ('mailgun://user@localhost.localdomain/{}-{}-{}'
        '?:from=Chris&:status=admin'.format(
            'a' * 32, 'b' * 8, 'c' * 8), {
                'instance': NotifyMailgun,
        }),
    # bcc and cc
    ('mailgun://user@localhost.localdomain/{}-{}-{}'
        '?bcc=user@example.com&cc=user2@example.com'.format(
            'a' * 32, 'b' * 8, 'c' * 8), {
                'instance': NotifyMailgun,
        }),
    # One To Email address
    ('mailgun://user@localhost.localdomain/{}-{}-{}/test@example.com'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
            'instance': NotifyMailgun,
    }),
    ('mailgun://user@localhost.localdomain/'
        '{}-{}-{}?to=test@example.com'.format(
            'a' * 32, 'b' * 8, 'c' * 8), {
                'instance': NotifyMailgun}),
    # One To Email address, a from name specified too
    ('mailgun://user@localhost.localdomain/{}-{}-{}/'
        'test@example.com?name="Frodo"'.format(
            'a' * 32, 'b' * 8, 'c' * 8), {
                'instance': NotifyMailgun}),
    # Invalid 'To' Email address
    ('mailgun://user@localhost.localdomain/{}-{}-{}/invalid'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
            'instance': NotifyMailgun,
            # Expected notify() response
            'notify_response': False,
    }),
    # Multiple 'To', 'Cc', and 'Bcc' addresses (with invalid ones)
    ('mailgun://user@example.com/{}-{}-{}/{}?bcc={}&cc={}'.format(
        'a' * 32, 'b' * 8, 'c' * 8,
        '/'.join(('user1@example.com', 'invalid', 'User2:user2@example.com')),
        ','.join(('user3@example.com', 'i@v', 'User1:user1@example.com')),
        ','.join(('user4@example.com', 'g@r@b', 'Da:user5@example.com'))), {
            'instance': NotifyMailgun,
    }),
    ('mailgun://user@localhost.localdomain/{}-{}-{}'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
        'instance': NotifyMailgun,
        # force a failure
        'response': False,
        'requests_response_code': requests.codes.internal_server_error,
    }),
    ('mailgun://user@localhost.localdomain/{}-{}-{}'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
        'instance': NotifyMailgun,
        # throw a bizzare code forcing us to fail to look it up
        'response': False,
        'requests_response_code': 999,
    }),
    ('mailgun://user@localhost.localdomain/{}-{}-{}'.format(
        'a' * 32, 'b' * 8, 'c' * 8), {
        'instance': NotifyMailgun,
        # 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_mailgun_urls():
    """
    NotifyMailgun() Apprise URLs

    """

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


@mock.patch('requests.post')
def test_plugin_mailgun_attachments(mock_post):
    """
    NotifyMailgun() Attachments

    """

    okay_response = requests.Request()
    okay_response.status_code = requests.codes.ok
    okay_response.content = ""

    # Assign our mock object our return value
    mock_post.return_value = okay_response

    # API Key
    apikey = 'abc123'

    obj = Apprise.instantiate(
        'mailgun://user@localhost.localdomain/{}'.format(apikey))
    assert isinstance(obj, NotifyMailgun)

    # Test Valid Attachment
    path = os.path.join(TEST_VAR_DIR, 'apprise-test.gif')
    attach = AppriseAttachment(path)
    assert obj.notify(
        body='body', title='title', notify_type=NotifyType.INFO,
        attach=attach) is True

    # Test invalid attachment
    path = os.path.join(TEST_VAR_DIR, '/invalid/path/to/an/invalid/file.jpg')
    assert obj.notify(
        body='body', title='title', notify_type=NotifyType.INFO,
        attach=path) is False

    mock_post.return_value = None
    mock_post.side_effect = OSError()
    # We can't send the message if we can't read the attachment
    assert obj.notify(
        body='body', title='title', notify_type=NotifyType.INFO,
        attach=attach) is False

    # Test Valid Attachment (load 3)
    path = (
        os.path.join(TEST_VAR_DIR, 'apprise-test.gif'),
        os.path.join(TEST_VAR_DIR, 'apprise-test.gif'),
        os.path.join(TEST_VAR_DIR, 'apprise-test.gif'),
    )
    attach = AppriseAttachment(path)

    # Return our good configuration
    mock_post.side_effect = None
    mock_post.return_value = okay_response
    with mock.patch('builtins.open', side_effect=OSError()):
        # We can't send the message we can't open the attachment for reading
        assert obj.notify(
            body='body', title='title', notify_type=NotifyType.INFO,
            attach=attach) is False

    # Do it again, but fail on the third file
    with mock.patch(
            'builtins.open',
            side_effect=(mock.Mock(), mock.Mock(), OSError())):

        assert obj.notify(
            body='body', title='title', notify_type=NotifyType.INFO,
            attach=attach) is False

    with mock.patch('builtins.open') as mock_open:
        mock_fp = mock.Mock()
        mock_fp.seek.side_effect = OSError()
        mock_open.return_value = mock_fp

        # We can't send the message we can't seek through it
        assert obj.notify(
            body='body', title='title', notify_type=NotifyType.INFO,
            attach=attach) is False

        mock_post.reset_mock()
        # Fail on the third file; this tests the for-loop inside the seek()
        # section of the code that calls close() on previously opened files
        mock_fp.seek.side_effect = (None, None, OSError())
        mock_open.return_value = mock_fp
        # We can't send the message we can't seek through it
        assert obj.notify(
            body='body', title='title', notify_type=NotifyType.INFO,
            attach=attach) is False

    # test the handling of our batch modes
    obj = Apprise.instantiate(
        'mailgun://no-reply@example.com/{}/'
        'user1@example.com/user2@example.com?batch=yes'.format(apikey))
    assert isinstance(obj, NotifyMailgun)

    # objects will be combined into a single post in batch mode
    assert len(obj) == 1

    # Force our batch to break into separate messages
    obj.default_batch_size = 1

    # We'll send 2 messages now
    assert len(obj) == 2

    mock_post.reset_mock()

    assert obj.notify(
        body='body', title='title', notify_type=NotifyType.INFO,
        attach=attach) is True
    assert mock_post.call_count == 2

    # single batch
    mock_post.reset_mock()
    # We'll send 1 message
    obj.default_batch_size = 2

    assert obj.notify(
        body='body', title='title', notify_type=NotifyType.INFO,
        attach=attach) is True
    assert mock_post.call_count == 1


@mock.patch('requests.post')
def test_plugin_mailgun_header_check(mock_post):
    """
    NotifyMailgun() Test Header Prep

    """

    okay_response = requests.Request()
    okay_response.status_code = requests.codes.ok
    okay_response.content = ""

    # Assign our mock object our return value
    mock_post.return_value = okay_response

    # API Key
    apikey = 'abc123'

    obj = Apprise.instantiate(
        'mailgun://user@localhost.localdomain/{}'.format(apikey))
    assert isinstance(obj, NotifyMailgun)
    assert isinstance(obj.url(), str) is True

    # No calls made yet
    assert mock_post.call_count == 0

    # Send our notification
    assert obj.notify(
        body='body', title='title', notify_type=NotifyType.INFO) is True

    # 2 calls were made, one to perform an email lookup, the second
    # was the notification itself
    assert mock_post.call_count == 1
    assert mock_post.call_args_list[0][0][0] == \
        'https://api.mailgun.net/v3/localhost.localdomain/messages'

    payload = mock_post.call_args_list[0][1]['data']
    assert 'from' in payload
    assert 'Apprise <user@localhost.localdomain>' == payload['from']
    assert 'user@localhost.localdomain' == payload['to']

    # Reset our mock object
    mock_post.reset_mock()

    obj = Apprise.instantiate(
        'mailgun://user@localhost.localdomain/'
        '{}?from=Luke%20Skywalker'.format(apikey))
    assert isinstance(obj, NotifyMailgun)
    assert isinstance(obj.url(), str) is True

    # No calls made yet
    assert mock_post.call_count == 0

    # Send our notification
    assert obj.notify(
        body='body', title='title', notify_type=NotifyType.INFO) is True

    assert mock_post.call_count == 1
    payload = mock_post.call_args_list[0][1]['data']
    assert 'from' in payload
    assert 'to' in payload
    assert 'Luke Skywalker <user@localhost.localdomain>' == payload['from']
    assert 'user@localhost.localdomain' == payload['to']

    # Reset our mock object
    mock_post.reset_mock()

    obj = Apprise.instantiate(
        'mailgun://user@localhost.localdomain/{}'
        '?from=Luke%20Skywalker<luke@rebels.com>'.format(apikey))
    assert isinstance(obj, NotifyMailgun)
    assert isinstance(obj.url(), str) is True

    # No calls made yet
    assert mock_post.call_count == 0

    # Send our notification
    assert obj.notify(
        body='body', title='title', notify_type=NotifyType.INFO) is True

    assert mock_post.call_count == 1
    payload = mock_post.call_args_list[0][1]['data']
    assert 'from' in payload
    assert 'to' in payload
    assert 'Luke Skywalker <luke@rebels.com>' == payload['from']
    assert 'luke@rebels.com' == payload['to']

    # Reset our mock object
    mock_post.reset_mock()

    obj = Apprise.instantiate(
        'mailgun://user@localhost.localdomain/{}'
        '?from=luke@rebels.com'.format(apikey))
    assert isinstance(obj, NotifyMailgun)
    assert isinstance(obj.url(), str) is True

    # No calls made yet
    assert mock_post.call_count == 0

    # Send our notification
    assert obj.notify(
        body='body', title='title', notify_type=NotifyType.INFO) is True

    assert mock_post.call_count == 1
    payload = mock_post.call_args_list[0][1]['data']
    assert 'from' in payload
    assert 'to' in payload
    assert 'luke@rebels.com' == payload['from']
    assert 'luke@rebels.com' == payload['to']
