# -*- coding: utf-8 -*-
# BSD 2-Clause License
#
# Apprise - Push Notification Library.
# Copyright (c) 2025, 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
import sys
import json
import requests
import pytest
from unittest import mock

from apprise.plugins.vapid.subscription import (
    WebPushSubscription, WebPushSubscriptionManager)
from apprise.plugins.vapid import NotifyVapid
from apprise import exception, asset, url
from apprise.common import PersistentStoreMode
from apprise.utils.pem import ApprisePEMController
from helpers import AppriseURLTester

# 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')

# a test UUID we can use
SUBSCRIBER = 'user@example.com'

PLUGIN_ID = 'vapid'

# Our Testing URLs
apprise_url_tests = (
    ('vapid://', {
        'instance': TypeError,
    }),
    ('vapid://:@/', {
        'instance': TypeError,
    }),
    ('vapid://invalid-subscriber', {
        # An invalid Subscriber
        'instance': TypeError,
    }),
    ('vapid://user@example.com', {
        # bare bone requirements met, but we don't have our subscription file
        # or our private key (pem)
        'instance': NotifyVapid,
        # We'll fail to respond because we would not have found any
        # configuration to load
        'notify_response': False,
    }),
    ('vapid://user@example.com?keyfile=invalid&subfile=invalid', {
        # Test passing keyfile and subfile on our path (even if invalid)
        'instance': NotifyVapid,
        # We'll fail to respond because we would not have found any
        # configuration to load
        'notify_response': False,
    }),
    ('vapid://user@example.com/newuser@example.com', {
        # we don't have our subscription file or private key
        'instance': NotifyVapid,
        'notify_response': False,
    }),
    ('vapid://user@example.ca/newuser@example.ca', {
        'instance': NotifyVapid,
        # force a failure
        'response': False,
        'requests_response_code': requests.codes.internal_server_error,
    }),
    ('vapid://user@example.uk/newuser@example.uk', {
        'instance': NotifyVapid,
        # throw a bizzare code forcing us to fail to look it up
        'response': False,
        'requests_response_code': 999,
    }),
    ('vapid://user@example.au/newuser@example.au', {
        'instance': NotifyVapid,
        # Throws a series of connection and transfer exceptions when this flag
        # is set and tests that we gracfully handle them
        'test_requests_exceptions': True,
    }),
)


@pytest.fixture
def patch_persistent_store_namespace(tmpdir):
    """
    Force an easy to test environment
    """
    with mock.patch.object(url.URLBase, 'url_id', return_value=PLUGIN_ID), \
            mock.patch.object(
                asset.AppriseAsset, 'storage_mode',
                PersistentStoreMode.AUTO), \
            mock.patch.object(
                asset.AppriseAsset, 'storage_path', str(tmpdir)):

        tmp_dir = tmpdir.mkdir(PLUGIN_ID)
        # Return the directory name
        yield str(tmp_dir)


@pytest.fixture
def subscription_reference():
    return {
        "user@example.com": {
            "endpoint": 'https://fcm.googleapis.com/fcm/send/default',
            "keys": {
                "p256dh": 'BI2RNIK2PkeCVoEfgVQNjievBi4gWvZxMiuCpOx6K6qCO'
                          '5caru5QCPuc-nEaLplbbFkHxTrR9YzE8ZkTjie5Fq0',
                "auth": 'k9Xzm43nBGo=',
            },
        },
        "user1": {
            "endpoint": 'https://fcm.googleapis.com/fcm/send/abc123',
            "keys": {
                "p256dh": 'BI2RNIK2PkeCVoEfgVQNjievBi4gWvZxMiuCpOx6K6qCO'
                          '5caru5QCPuc-nEaLplbbFkHxTrR9YzE8ZkTjie5Fq0',
                "auth": 'k9Xzm43nBGo=',
            },
        },
        "user2": {
            "endpoint": 'https://fcm.googleapis.com/fcm/send/def456',
            "keys": {
                "p256dh": 'BI2RNIK2PkeCVoEfgVQNjievBi4gWvZxMiuCpOx6K6qCO'
                          '5caru5QCPuc-nEaLplbbFkHxTrR9YzE8ZkTjie5Fq0',
                "auth": 'k9Xzm43nBGo=',
            },
        },
    }


@pytest.mark.skipif(
    'cryptography' not in sys.modules, reason="Requires cryptography")
def test_plugin_vapid_urls():
    """
    NotifyVapid() Apprise URLs - No Config

    """

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


@pytest.mark.skipif(
    'cryptography' not in sys.modules, reason="Requires cryptography")
def test_plugin_vapid_urls_with_required_assets(
        patch_persistent_store_namespace, subscription_reference):
    """
    NotifyVapid() Apprise URLs With Config
    """

    # Determine our store
    pc = ApprisePEMController(path=patch_persistent_store_namespace)
    assert pc.keygen() is True

    # Write our subscriptions file to disk
    subscription_file = os.path.join(
        patch_persistent_store_namespace,
        NotifyVapid.vapid_subscription_file)

    with open(subscription_file, 'w') as f:
        f.write(json.dumps(subscription_reference))

    tests = (
        ('vapid://user@example.com', {
            # user@example.com loaded (also used as subscriber id)
            'instance': NotifyVapid,
        }),
        ('vapid://user@example.com/newuser@example.com', {
            # no newuser@example.com key entry
            'instance': NotifyVapid,
            'notify_response': False,
        }),
        ('vapid://user@example.com/user1?to=user2', {
            # We'll succesfully notify 2 users
            'instance': NotifyVapid,
        }),
        ('vapid://user1?to=user2&from=user@example.com', {
            # We'll succesfully notify 2 users
            'instance': NotifyVapid,
        }),
        ('vapid://?to=user2&from=user@example.com', {
            # No host provided
            'instance': NotifyVapid,
        }),
        ('vapid://user@example.com?to=user2&from=user@example.com', {
            # We'll succesfully notify 2 users
            'instance': NotifyVapid,
        }),
        ('vapid://user@example.com/user1?to=user2&ttl=15', {
            # test ttl
            'instance': NotifyVapid,
        }),
        ('vapid://user@example.com/user1?to=user2&ttl=', {
            # test ttl
            'instance': NotifyVapid,
        }),
        ('vapid://user@example.com/user1?to=user2&ttl=invalid', {
            # test ttl
            'instance': NotifyVapid,
        }),
        ('vapid://user@example.com/user1?to=user2&ttl=-4000', {
            # bad ttl
            'instance': TypeError,
        }),
        ('vapid://user@example.com/user1?to=user2&mode=edge', {
            # test mode
            'instance': NotifyVapid,
        }),
        ('vapid://user@example.com/user1?to=user2&mode=', {
            # test mode
            'instance': TypeError,
        }),
        ('vapid://user@example.com/user1?to=user2&mode=invalid', {
            # test mode more
            'instance': TypeError,
        }),
        ('vapid://user@example.com/user1', {
            'instance': NotifyVapid,
            # force a failure
            'response': False,
            'requests_response_code': requests.codes.internal_server_error,
        }),
        ('vapid://user@example.com/user1', {
            'instance': NotifyVapid,
            # throw a bizzare code forcing us to fail to look it up
            'response': False,
            'requests_response_code': 999,
        }),
        ('vapid://user@example.com/user1', {
            'instance': NotifyVapid,
            # Throws a series of connection and transfer exceptions
            # when this flag is set and tests that we gracfully handle them
            'test_requests_exceptions': True,
        }),
    )

    AppriseURLTester(tests=tests).run_all()


@pytest.mark.skipif(
    'cryptography' not in sys.modules, reason="Requires cryptography")
def test_plugin_vapid_subscriptions(tmpdir):
    """
    NotifyVapid() Subscriptions

    """

    # Temporary directory
    tmpdir0 = tmpdir.mkdir('tmp00')

    with pytest.raises(exception.AppriseInvalidData):
        # Integer not supported
        WebPushSubscription(42)

    with pytest.raises(exception.AppriseInvalidData):
        # Not the correct format
        WebPushSubscription('bad-content')

    with pytest.raises(exception.AppriseInvalidData):
        # Invalid JSON
        WebPushSubscription('{')

    with pytest.raises(exception.AppriseInvalidData):
        # Empty Dictionary
        WebPushSubscription({})

    with pytest.raises(exception.AppriseInvalidData):
        WebPushSubscription({
            "endpoint": 'https://fcm.googleapis.com/fcm/send/abc123',
            "keys": {
                "p256dh": 'BNcW4oA7zq5H9TKIrA3XfKclN2fX9P_7NR=',
                "auth": 42,
            },
        })

    with pytest.raises(exception.AppriseInvalidData):
        WebPushSubscription({
            "endpoint": 'https://fcm.googleapis.com/fcm/send/abc123',
            "keys": {
                "p256dh": 42,
                "auth": 'k9Xzm43nBGo=',
            },
        })

    with pytest.raises(exception.AppriseInvalidData):
        WebPushSubscription({
            "endpoint": 'https://fcm.googleapis.com/fcm/send/abc123',
        })

    with pytest.raises(exception.AppriseInvalidData):
        WebPushSubscription({
            "endpoint": 'https://fcm.googleapis.com/fcm/send/abc123',
            "keys": {},
        })

    with pytest.raises(exception.AppriseInvalidData):
        # Invalid p256dh public key provided
        wps = WebPushSubscription({
            "endpoint": 'https://fcm.googleapis.com/fcm/send/abc123',
            "keys": {
                "p256dh": 'BNcW4oA7zq5H9TKIrA3XfKclN2fX9P_7NR=',
                "auth": 'k9Xzm43nBGo=',
            },
        })

    # An empty object
    wps = WebPushSubscription()
    assert bool(wps) is False
    assert isinstance(wps.json(), str)
    assert json.loads(wps.json())
    assert str(wps) == ''
    assert wps.auth is None
    assert wps.endpoint is None
    assert wps.p256dh is None
    assert wps.public_key is None
    # We can't write anything as there is nothing loaded
    assert wps.write(os.path.join(str(tmpdir0), 'subscriptions.json')) is False

    # A valid key
    wps = WebPushSubscription({
        "endpoint": 'https://fcm.googleapis.com/fcm/send/abc123',
        "keys": {
            "p256dh": 'BI2RNIK2PkeCVoEfgVQNjievBi4gWvZxMiuCpOx6K6qCO'
                      '5caru5QCPuc-nEaLplbbFkHxTrR9YzE8ZkTjie5Fq0',
            "auth": 'k9Xzm43nBGo=',
        },
    })

    assert bool(wps) is True
    assert isinstance(wps.json(), str)
    assert json.loads(wps.json())
    assert str(wps) == 'abc123'
    assert wps.auth == 'k9Xzm43nBGo='
    assert wps.endpoint == 'https://fcm.googleapis.com/fcm/send/abc123'
    assert wps.p256dh == 'BI2RNIK2PkeCVoEfgVQNjievBi4gWvZxMiuCpOx6K6qCO' \
                         '5caru5QCPuc-nEaLplbbFkHxTrR9YzE8ZkTjie5Fq0'
    assert wps.public_key is not None

    # Currently no files here
    assert os.listdir(str(tmpdir0)) == []

    # Bad content
    assert wps.write(object) is False
    assert wps.write(None) is False
    # Can't write to a name already taken by as a directory
    assert wps.write(str(tmpdir0)) is False
    # Can't write to a name already taken by as a directory
    assert wps.write(os.path.join(str(tmpdir0), 'subscriptions.json')) is True
    assert os.listdir(str(tmpdir0)) == ['subscriptions.json']


@pytest.mark.skipif(
    'cryptography' in sys.modules,
    reason="Requires that cryptography NOT be installed")
def test_plugin_vapid_subscriptions_without_c():
    """
    NotifyVapid() Subscriptions (no Cryptography)

    """
    with pytest.raises(exception.AppriseInvalidData):
        # A valid key that can't be loaded because crytography is missing
        WebPushSubscription({
            "endpoint": 'https://fcm.googleapis.com/fcm/send/abc123',
            "keys": {
                "p256dh": 'BI2RNIK2PkeCVoEfgVQNjievBi4gWvZxMiuCpOx6K6qCO'
                          '5caru5QCPuc-nEaLplbbFkHxTrR9YzE8ZkTjie5Fq0',
                "auth": 'k9Xzm43nBGo=',
            },
        })


@pytest.mark.skipif(
    'cryptography' not in sys.modules, reason="Requires cryptography")
def test_plugin_vapid_subscription_manager(tmpdir):
    """
    NotifyVapid() Subscription Manager

    """

    # Temporary directory
    tmpdir0 = tmpdir.mkdir('tmp00')

    with pytest.raises(exception.AppriseInvalidData):
        # An invalid object
        smgr = WebPushSubscriptionManager()
        smgr['abc'] = 'invalid'

    with pytest.raises(exception.AppriseInvalidData):
        # An invalid object
        smgr = WebPushSubscriptionManager()
        smgr += 'invalid'

    smgr = WebPushSubscriptionManager()

    assert bool(smgr) is False
    assert len(smgr) == 0

    sub = {
        "endpoint": 'https://fcm.googleapis.com/fcm/send/abc123',
        "keys": {
            "p256dh": 'BI2RNIK2PkeCVoEfgVQNjievBi4gWvZxMiuCpOx6K6qCO'
                      '5caru5QCPuc-nEaLplbbFkHxTrR9YzE8ZkTjie5Fq0',
            "auth": 'k9Xzm43nBGo=',
        },
    }

    assert smgr.add(sub) is True
    assert bool(smgr) is True
    assert len(smgr) == 1

    # Same sub (overwrites same slot)
    smgr += sub
    assert bool(smgr) is True
    assert len(smgr) == 1

    # This makes a copy
    smgr['abc'] = smgr['abc123']
    assert bool(smgr) is True
    assert len(smgr) == 2

    assert isinstance(smgr['abc123'], WebPushSubscription)

    # Currently no files here
    assert os.listdir(str(tmpdir0)) == []

    # Write our content
    assert smgr.write(
        os.path.join(str(tmpdir0), 'subscriptions.json')) is True

    assert os.listdir(str(tmpdir0)) == ['subscriptions.json']

    # Reset our object
    smgr.clear()
    assert bool(smgr) is False
    assert len(smgr) == 0

    # Load our content back
    assert smgr.load(
        os.path.join(str(tmpdir0), 'subscriptions.json')) is True
    assert bool(smgr) is True
    assert len(smgr) == 2

    # Write over our file using the standard Subscription format
    assert smgr['abc123'].write(
        os.path.join(str(tmpdir0), 'subscriptions.json')) is True

    # We can still open this type as well
    assert smgr.load(
        os.path.join(str(tmpdir0), 'subscriptions.json')) is True
    assert bool(smgr) is True
    assert len(smgr) == 1

    smgr.clear()
    bad_entry = {
        "endpoint": 'https://fcm.googleapis.com/fcm/send/abc123',
        "keys": {
            "p256dh": 'invalid',
            "auth": 'garbage',
        },
    }

    subscriptions = os.path.join(str(tmpdir0), 'subscriptions.json')
    with open(subscriptions, 'w', encoding='utf-8') as f:
        # A bad JSON file
        f.write('{')
    assert smgr.load(subscriptions) is False

    with open(subscriptions, 'w', encoding='utf-8') as f:
        # not expected dictionary
        f.write('null')
    assert smgr.load(subscriptions) is False

    subscriptions = os.path.join(str(tmpdir0), 'subscriptions.json')
    with open(subscriptions, 'w', encoding='utf-8') as f:
        json.dump(bad_entry, f)
    assert smgr.load(subscriptions) is False

    # Create bad data
    bad_data = {
        'bad1': bad_entry,
        'bad2': bad_entry,
        'bad3': bad_entry,
        'bad4': bad_entry,
    }
    subscriptions = os.path.join(str(tmpdir0), 'subscriptions.json')
    with open(subscriptions, 'w', encoding='utf-8') as f:
        json.dump(bad_data, f)
    assert smgr.load(subscriptions) is False
    assert smgr.load('invalid-file') is False


@pytest.mark.skipif(
    'cryptography' not in sys.modules, reason="Requires cryptography")
@mock.patch('requests.post')
def test_plugin_vapid_initializations(mock_post, tmpdir):
    """
    NotifyVapid() Initializations

    """

    # Assign our mock object our return value
    okay_response = requests.Request()
    okay_response.status_code = requests.codes.ok
    okay_response.content = ""
    mock_post.return_value = okay_response

    # Temporary directory
    tmpdir0 = tmpdir.mkdir('tmp00')

    # Write our subfile
    smgr = WebPushSubscriptionManager()
    sub = {
        "endpoint": 'https://fcm.googleapis.com/fcm/send/abc123',
        "keys": {
            "p256dh": 'BI2RNIK2PkeCVoEfgVQNjievBi4gWvZxMiuCpOx6K6qCO'
                      '5caru5QCPuc-nEaLplbbFkHxTrR9YzE8ZkTjie5Fq0',
            "auth": 'k9Xzm43nBGo=',
        },
    }
    subfile = os.path.join(str(tmpdir0), 'subscriptions.json')
    assert smgr.add(sub) is True
    assert smgr.add(smgr['abc123']) is True
    assert os.listdir(str(tmpdir0)) == []

    with mock.patch('json.dump', side_effect=OSError):
        # We will fial to write
        assert smgr.write(subfile) is False

    assert smgr.write(subfile) is True
    assert os.listdir(str(tmpdir0)) == ['subscriptions.json']
    assert isinstance(smgr.json(), str)

    _asset = asset.AppriseAsset(
        storage_mode=PersistentStoreMode.FLUSH,
        storage_path=str(tmpdir0),
        # Auto-gen our private/public key pair
        pem_autogen=True,
    )

    # Auto-Key Generation
    obj = NotifyVapid(
        'user@example.ca', targets=['abc123', ], subfile=subfile,
        asset=_asset)
    assert isinstance(obj, NotifyVapid)
    # Our subscription directory + our
    # persistent store where our keys were generated
    assert len(os.listdir(str(tmpdir0))) == 2

    # Second call re-references keys previously generated
    obj = NotifyVapid(
        'user@example.ca', targets=['abc123', ], subfile=subfile,
        asset=_asset)
    assert isinstance(obj, NotifyVapid)
    assert isinstance(obj.url(), str)
    assert obj.send('test') is True
    # A second message makes no difference; what is loaded into memory is used
    assert obj.send('test') is True

    obj = NotifyVapid(
        'user@example.ca', targets=['abc123', ], subfile='/a/bad/path',
        asset=_asset)
    assert isinstance(obj, NotifyVapid)
    assert isinstance(obj.url(), str)
    assert obj.send('test') is False
    # A second message makes no difference; what is loaded into memory is used
    assert obj.send('test') is False

    # Detect our keyfile
    cache_dir = [x for x in os.listdir(str(tmpdir0))
                 if not x.endswith('subscriptions.json')][0]

    # Test fixed assignment to our keyfile
    keyfile = os.path.join(str(tmpdir0), cache_dir, 'private_key.pem')
    assert os.path.exists(keyfile)
    obj = NotifyVapid(
        'user@example.ca', targets=['abc123', ], keyfile=keyfile,
        subfile=subfile, asset=_asset)
    assert isinstance(obj, NotifyVapid)
    assert isinstance(obj.url(), str)
    assert obj.send('test') is True
    # A second message makes no difference; what is loaded into memory is used
    assert obj.send('test') is True

    # Invalid Keyfile
    obj = NotifyVapid(
        'user@example.ca', targets=['abc123', ], keyfile=subfile,
        subfile=subfile, asset=_asset)
    assert isinstance(obj, NotifyVapid)
    assert isinstance(obj.url(), str)
    assert obj.send('test') is False
    # A second message makes no difference; what is loaded into memory is used
    assert obj.send('test') is False

    # AutoGen Temporary directory
    tmpdir1 = tmpdir.mkdir('tmp01')
    _asset2 = asset.AppriseAsset(
        storage_mode=PersistentStoreMode.FLUSH,
        storage_path=str(tmpdir1),
        # Auto-gen our private/public key pair
        pem_autogen=True,
    )

    assert os.listdir(str(tmpdir1)) == []
    obj = NotifyVapid(
        'user@example.ca', targets=['abc123', ], keyfile=keyfile,
        asset=_asset2)
    assert isinstance(obj, NotifyVapid)
    assert isinstance(obj.url(), str)
    # We have a temporary subscription file we can use
    assert os.listdir(str(tmpdir1)) == ['00088ad3']
    # We will have a dud configuration file, but at least it's something
    # to help the user with
    assert obj.send('test') is False
    # Second instance fails as well
    assert obj.send('test') is False

    # AutoGen Temporary directory
    tmpdir2 = tmpdir.mkdir('tmp02')
    _asset3 = asset.AppriseAsset(
        storage_mode=PersistentStoreMode.FLUSH,
        storage_path=str(tmpdir2),
        # Auto-gen our private/public key pair
        pem_autogen=True,
    )

    # Test invalid keyfile
    assert os.path.exists(keyfile)
    obj = NotifyVapid(
        'user@example.ca', targets=['abc123', ], keyfile='invalid-file',
        subfile=subfile, asset=_asset3)
    assert isinstance(obj, NotifyVapid)
    assert isinstance(obj.url(), str)
    assert obj.send('test') is False
    # A second message makes no difference; what is loaded into memory is used
    assert obj.send('test') is False


@pytest.mark.skipif(
    'cryptography' in sys.modules,
    reason="Requires that cryptography NOT be installed")
def test_plugin_vapid_initializations_without_c(tmpdir):
    """
    NotifyVapid() Initializations without cryptography

    """
    # Temporary directory
    tmpdir0 = tmpdir.mkdir('tmp00')

    # Write our subfile
    smgr = WebPushSubscriptionManager()
    sub = {
        "endpoint": 'https://fcm.googleapis.com/fcm/send/abc123',
        "keys": {
            "p256dh": 'BI2RNIK2PkeCVoEfgVQNjievBi4gWvZxMiuCpOx6K6qCO'
                      '5caru5QCPuc-nEaLplbbFkHxTrR9YzE8ZkTjie5Fq0',
            "auth": 'k9Xzm43nBGo=',
        },
    }
    subfile = os.path.join(str(tmpdir0), 'subscriptions.json')
    assert smgr.add(sub) is False
    _asset = asset.AppriseAsset(
        storage_mode=PersistentStoreMode.FLUSH,
        storage_path=str(tmpdir0),
        # Auto-gen our private/public key pair
        pem_autogen=True,
    )

    # Auto-Key Generation
    obj = NotifyVapid(
        'user@example.ca', targets=['abc123', ], subfile=subfile,
        asset=_asset)
    assert isinstance(obj, NotifyVapid)