# -*- coding: utf-8 -*-
# BSD 3-Clause License
#
# Apprise - Push Notification Library.
# Copyright (c) 2023, 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.
#
# 3. Neither the name of the copyright holder 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 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 requests

from apprise.plugins.NotifyReddit import NotifyReddit
from helpers import AppriseURLTester
from unittest import mock

from json import dumps
from datetime import datetime
from datetime import timedelta
from datetime import timezone

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

# Our Testing URLs
apprise_url_tests = (
    ('reddit://', {
        # Missing all credentials
        'instance': TypeError,
    }),
    ('reddit://:@/', {
        'instance': TypeError,
    }),
    ('reddit://user@app_id/app_secret/', {
        # No password
        'instance': TypeError,
    }),
    ('reddit://user:password@app_id/', {
        # No app secret
        'instance': TypeError,
    }),
    ('reddit://user:password@app%id/appsecret/apprise', {
        # No invalid app_id (has percent)
        'instance': TypeError,
    }),
    ('reddit://user:password@app%id/app_secret/apprise', {
        # No invalid app_secret (has percent)
        'instance': TypeError,
    }),
    ('reddit://user:password@app-id/app-secret/apprise?kind=invalid', {
        # An Invalid Kind
        'instance': TypeError,
    }),
    ('reddit://user:password@app-id/app-secret/apprise', {
        # Login failed
        'instance': NotifyReddit,
        # Expected notify() response is False because internally we would
        # have failed to login
        'notify_response': False,
    }),
    ('reddit://user:password@app-id/app-secret', {
        # Login successful, but there was no subreddit to notify
        'instance': NotifyReddit,
        'requests_response_text': {
            "access_token": 'abc123',
            "token_type": "bearer",
            "expires_in": 100000,
            "scope": '*',
            "refresh_token": 'def456',
            # The below is used in the response:
            "json": {
                # No errors during post
                "errors": [],
            },
        },
        # Expected notify() response is False
        'notify_response': False,
    }),
    ('reddit://user:password@app-id/app-secret/apprise', {
        'instance': NotifyReddit,
        'requests_response_text': {
            "access_token": 'abc123',
            "token_type": "bearer",
            "expires_in": 100000,
            "scope": '*',
            "refresh_token": 'def456',
            # The below is used in the response:
            "json": {
                # Identify an error
                "errors": [('KEY', 'DESC', 'INFO'), ],
            },
        },
        # Expected notify() response is False because the
        # reddit server provided us errors
        'notify_response': False,
    }),

    ('reddit://user:password@app-id/app-secret/apprise', {
        'instance': NotifyReddit,
        'requests_response_text': {
            "access_token": 'abc123',
            "token_type": "bearer",
            # Test case where 'expires_in' entry is missing
            "scope": '*',
            "refresh_token": 'def456',
            # The below is used in the response:
            "json": {
                # No errors during post
                "errors": [],
            },
        },
        # Our expected url(privacy=True) startswith() response:
        'privacy_url': 'reddit://user:****@****/****/apprise',
    }),
    ('reddit://user:password@app-id/app-secret/apprise/subreddit2', {
        # password:login acceptable
        'instance': NotifyReddit,
        'requests_response_text': {
            "access_token": 'abc123',
            "token_type": "bearer",
            "expires_in": 100000,
            "scope": '*',
            "refresh_token": 'def456',
            # The below is used in the response:
            "json": {
                # No errors during post
                "errors": [],
            },
        },
        # Our expected url(privacy=True) startswith() response:
        'privacy_url':
            'reddit://user:****@****/****/apprise/subreddit2',
    }),
    # Pass in some arguments to over-ride defaults
    ('reddit://user:pass@id/secret/sub/'
     '?ad=yes&nsfw=yes&replies=no&resubmit=yes&spoiler=yes&kind=self', {
         'instance': NotifyReddit,
         'requests_response_text': {
             "access_token": 'abc123',
             "token_type": "bearer",
             "expires_in": 100000,
             "scope": '*',
             "refresh_token": 'def456',
             # The below is used in the response:
             "json": {
                 # No errors during post
                 "errors": [],
             },
         },
         # Our expected url(privacy=True) startswith() response:
         'privacy_url': 'reddit://user:****@****/****/sub'}),
    # Pass in more arguments
    ('reddit://'
     '?user=l2g&pass=pass&app_secret=abc123&app_id=54321&to=sub1,sub2', {
         'instance': NotifyReddit,
         'requests_response_text': {
             "access_token": 'abc123',
             "token_type": "bearer",
             "expires_in": 100000,
             "scope": '*',
             "refresh_token": 'def456',
             # The below is used in the response:
             "json": {
                 # No errors during post
                 "errors": [],
             },
         },
         # Our expected url(privacy=True) startswith() response:
         'privacy_url': 'reddit://l2g:****@****/****/sub1/sub2'}),
    # More arguments ...
    ('reddit://user:pass@id/secret/sub7/sub6/sub5/'
     '?flair_id=wonder&flair_text=not%20for%20you', {
         'instance': NotifyReddit,
         'requests_response_text': {
             "access_token": 'abc123',
             "token_type": "bearer",
             "expires_in": 100000,
             "scope": '*',
             "refresh_token": 'def456',
             # The below is used in the response:
             "json": {
                 # No errors during post
                 "errors": [],
             },
         },
         # Our expected url(privacy=True) startswith() response:
         'privacy_url': 'reddit://user:****@****/****/sub'}),
    ('reddit://user:password@app-id/app-secret/apprise', {
        'instance': NotifyReddit,
        # throw a bizzare code forcing us to fail to look it up
        'response': False,
        'requests_response_code': 999,
    }),
    ('reddit://user:password@app-id/app-secret/apprise', {
        'instance': NotifyReddit,
        # 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_reddit_urls():
    """
    NotifyReddit() Apprise URLs

    """

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


@mock.patch('requests.post')
def test_plugin_reddit_general(mock_post):
    """
    NotifyReddit() General Tests

    """
    NotifyReddit.clock_skew = timedelta(seconds=0)

    # Generate a valid credentials:
    kwargs = {
        'app_id': 'a' * 10,
        'app_secret': 'b' * 20,
        'user': 'user',
        'password': 'pasword',
        'targets': 'apprise',
    }

    # Epoch time:
    epoch = datetime.fromtimestamp(0, timezone.utc)

    good_response = mock.Mock()
    good_response.content = dumps({
        "access_token": 'abc123',
        "token_type": "bearer",
        "expires_in": 100000,
        "scope": '*',
        "refresh_token": 'def456',
        # The below is used in the response:
        "json": {
            # No errors during post
            "errors": [],
        },
    })
    good_response.status_code = requests.codes.ok
    good_response.headers = {
        'X-RateLimit-Reset': (
            datetime.now(timezone.utc) - epoch).total_seconds(),
        'X-RateLimit-Remaining': 1,
    }

    # Prepare Mock
    mock_post.return_value = good_response

    # Variation Initializations
    obj = NotifyReddit(**kwargs)
    assert isinstance(obj, NotifyReddit) is True
    assert isinstance(obj.url(), str) is True

    # Dynamically pick up on a link
    assert obj.send(body="http://hostname") is True

    bad_response = mock.Mock()
    bad_response.content = ''
    bad_response.status_code = 401

    # Change our status code and try again
    mock_post.return_value = bad_response
    assert obj.send(body="test") is False
    assert obj.ratelimit_remaining == 1

    # Return the status
    mock_post.return_value = good_response

    # Force a case where there are no more remaining posts allowed
    good_response.headers = {
        'X-RateLimit-Reset': (
            datetime.now(timezone.utc) - epoch).total_seconds(),
        'X-RateLimit-Remaining': 0,
    }
    # behind the scenes, it should cause us to update our rate limit
    assert obj.send(body="test") is True
    assert obj.ratelimit_remaining == 0

    # This should cause us to block
    good_response.headers = {
        'X-RateLimit-Reset': (
            datetime.now(timezone.utc) - epoch).total_seconds(),
        'X-RateLimit-Remaining': 10,
    }
    assert obj.send(body="test") is True
    assert obj.ratelimit_remaining == 10

    # Handle cases where we simply couldn't get this field
    del good_response.headers['X-RateLimit-Remaining']
    assert obj.send(body="test") is True
    # It remains set to the last value
    assert obj.ratelimit_remaining == 10

    # Reset our variable back to 1
    good_response.headers = {
        'X-RateLimit-Reset': (
            datetime.now(timezone.utc) - epoch).total_seconds(),
        'X-RateLimit-Remaining': 1,
    }
    # Handle cases where our epoch time is wrong
    del good_response.headers['X-RateLimit-Reset']
    assert obj.send(body="test") is True

    # Return our object, but place it in the future forcing us to block
    good_response.headers = {
        'X-RateLimit-Reset': (
            datetime.now(timezone.utc) - epoch).total_seconds() + 1,
        'X-RateLimit-Remaining': 0,
    }

    obj.ratelimit_remaining = 0
    assert obj.send(body="test") is True

    # Return our object, but place it in the future forcing us to block
    good_response.headers = {
        'X-RateLimit-Reset': (
            datetime.now(timezone.utc) - epoch).total_seconds() - 1,
        'X-RateLimit-Remaining': 0,
    }
    assert obj.send(body="test") is True

    # Return our limits to always work
    obj.ratelimit_remaining = 1

    # Invalid JSON
    response = mock.Mock()
    response.headers = {
        'X-RateLimit-Reset': (
            datetime.now(timezone.utc) - epoch).total_seconds(),
        'X-RateLimit-Remaining': 1,
    }
    response.content = '{'
    response.status_code = requests.codes.ok
    mock_post.return_value = response
    obj = NotifyReddit(**kwargs)
    assert obj.send(body="test") is False

    # Return it to a parseable string but missing the entries we expect
    response.content = '{}'
    obj = NotifyReddit(**kwargs)
    assert obj.send(body="test") is False

    # No access token provided
    response.content = dumps({
        "access_token": '',
        "json": {
            # No errors during post
            "errors": [],
        },
    })
    obj = NotifyReddit(**kwargs)
    assert obj.send(body="test") is False

    # cause a json parsing issue now
    response.content = None
    obj = NotifyReddit(**kwargs)
    assert obj.send(body="test") is False

    # Reset to what we consider a good response
    good_response.content = dumps({
        "access_token": 'abc123',
        "token_type": "bearer",
        "expires_in": 100000,
        "scope": '*',
        "refresh_token": 'def456',
        # The below is used in the response:
        "json": {
            # No errors during post
            "errors": [],
        },
    })
    good_response.status_code = requests.codes.ok
    good_response.headers = {
        'X-RateLimit-Reset': (
            datetime.now(timezone.utc) - epoch).total_seconds(),
        'X-RateLimit-Remaining': 1,
    }

    # Reset our mock object
    mock_post.reset_mock()

    # Test sucessful re-authentication after failed post
    mock_post.side_effect = [
        good_response, bad_response, good_response, good_response]
    obj = NotifyReddit(**kwargs)
    assert obj.send(body="test") is True
    assert mock_post.call_count == 4
    assert mock_post.call_args_list[0][0][0] == \
        'https://www.reddit.com/api/v1/access_token'
    assert mock_post.call_args_list[1][0][0] == \
        'https://oauth.reddit.com/api/submit'
    assert mock_post.call_args_list[2][0][0] == \
        'https://www.reddit.com/api/v1/access_token'
    assert mock_post.call_args_list[3][0][0] == \
        'https://oauth.reddit.com/api/submit'

    # Test failed re-authentication
    mock_post.side_effect = [
        good_response, bad_response, bad_response]
    obj = NotifyReddit(**kwargs)
    assert obj.send(body="test") is False

    # Test exception handing on re-auth attempt
    response.content = '{'
    response.status_code = requests.codes.ok
    mock_post.side_effect = [
        good_response, bad_response, good_response, response]
    obj = NotifyReddit(**kwargs)
    assert obj.send(body="test") is False
