# -*- 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.

# API reference: https://pushy.me/docs/api/send-notifications
import re
import requests
from itertools import chain

from json import dumps, loads
from .NotifyBase import NotifyBase
from ..common import NotifyType
from ..utils import parse_list
from ..utils import validate_regex
from ..AppriseLocale import gettext_lazy as _

# Used to detect a Device and Topic
VALIDATE_DEVICE = re.compile(r'^@(?P<device>[a-z0-9]+)$', re.I)
VALIDATE_TOPIC = re.compile(r'^[#]?(?P<topic>[a-z0-9]+)$', re.I)

# Extend HTTP Error Messages
PUSHY_HTTP_ERROR_MAP = {
    401: 'Unauthorized - Invalid Token.',
}


class NotifyPushy(NotifyBase):
    """
    A wrapper for Pushy Notifications
    """

    # The default descriptive name associated with the Notification
    service_name = 'Pushy'

    # The services URL
    service_url = 'https://pushy.me/'

    # All Pushy requests are secure
    secure_protocol = 'pushy'

    # A URL that takes you to the setup/help of the specific protocol
    setup_url = 'https://github.com/caronc/apprise/wiki/Notify_pushy'

    # Pushy uses the http protocol with JSON requests
    notify_url = 'https://api.pushy.me/push?api_key={apikey}'

    # The maximum allowable characters allowed in the body per message
    body_maxlen = 4096

    # Define object templates
    templates = (
        '{schema}://{apikey}/{targets}',
    )

    # Define our template tokens
    template_tokens = dict(NotifyBase.template_tokens, **{
        'apikey': {
            'name': _('Secret API Key'),
            'type': 'string',
            'private': True,
            'required': True,
        },
        'target_device': {
            'name': _('Target Device'),
            'type': 'string',
            'prefix': '@',
            'map_to': 'targets',
        },
        'target_topic': {
            'name': _('Target Topic'),
            'type': 'string',
            'prefix': '#',
            'map_to': 'targets',
        },
        'targets': {
            'name': _('Targets'),
            'type': 'list:string',
            'required': True,
        },
    })

    # Define our template arguments
    template_args = dict(NotifyBase.template_args, **{
        'sound': {
            # Specify something like ping.aiff
            'name': _('Sound'),
            'type': 'string',
        },
        'badge': {
            'name': _('Badge'),
            'type': 'int',
            'min': 0,
        },
        'to': {
            'alias_of': 'targets',
        },
        'key': {
            'alias_of': 'apikey',
        },
    })

    def __init__(self, apikey, targets=None, sound=None, badge=None, **kwargs):
        """
        Initialize Pushy Object
        """
        super().__init__(**kwargs)

        # Access Token (associated with project)
        self.apikey = validate_regex(apikey)
        if not self.apikey:
            msg = 'An invalid Pushy Secret API Key ' \
                  '({}) was specified.'.format(apikey)
            self.logger.warning(msg)
            raise TypeError(msg)

        # Get our targets
        self.devices = []
        self.topics = []

        for target in parse_list(targets):
            result = VALIDATE_TOPIC.match(target)
            if result:
                self.topics.append(result.group('topic'))
                continue

            result = VALIDATE_DEVICE.match(target)
            if result:
                self.devices.append(result.group('device'))
                continue

            self.logger.warning(
                'Dropped invalid topic/device  '
                '({}) specified.'.format(target),
            )

        # Setup our sound
        self.sound = sound

        # Badge
        try:
            # Acquire our badge count if we can:
            #  - We accept both the integer form as well as a string
            #    representation
            self.badge = int(badge)
            if self.badge < 0:
                raise ValueError()

        except TypeError:
            # NoneType means use Default; this is an okay exception
            self.badge = None

        except ValueError:
            self.badge = None
            self.logger.warning(
                'The specified Pushy badge ({}) is not valid ', badge)

        return

    def send(self, body, title='', notify_type=NotifyType.INFO, **kwargs):
        """
        Perform Pushy Notification
        """

        if len(self.topics) + len(self.devices) == 0:
            # There were no services to notify
            self.logger.warning('There were no Pushy targets to notify.')
            return False

        # error tracking (used for function return)
        has_error = False

        # Default Header
        headers = {
            'User-Agent': self.app_id,
            'Content-Type': 'application/json',
            'Accepts': 'application/json',
        }

        # Our URL
        notify_url = self.notify_url.format(apikey=self.apikey)

        # Default content response object
        content = {}

        # Create a copy of targets (topics and devices)
        targets = list(self.topics) + list(self.devices)
        while len(targets):
            target = targets.pop(0)

            # prepare JSON Object
            payload = {
                # Mandatory fields
                'to': target,
                "data": {
                    "message": body,
                },
                "notification": {
                    'body': body,
                }
            }

            # Optional payload items
            if title:
                payload['notification']['title'] = title

            if self.sound:
                payload['notification']['sound'] = self.sound

            if self.badge is not None:
                payload['notification']['badge'] = self.badge

            self.logger.debug('Pushy POST URL: %s (cert_verify=%r)' % (
                notify_url, self.verify_certificate,
            ))
            self.logger.debug('Pushy Payload: %s' % str(payload))

            # Always call throttle before any remote server i/o is made
            self.throttle()

            try:
                r = requests.post(
                    notify_url,
                    data=dumps(payload),
                    headers=headers,
                    verify=self.verify_certificate,
                    timeout=self.request_timeout,
                )

                # Sample response
                # See: https://pushy.me/docs/api/send-notifications
                # {
                #     "success": true,
                #     "id": "5ea9b214b47cad768a35f13a",
                #     "info": {
                #         "devices": 1
                #         "failed": ['abc']
                #     }
                # }
                try:
                    content = loads(r.content)

                except (AttributeError, TypeError, ValueError):
                    # ValueError = r.content is Unparsable
                    # TypeError = r.content is None
                    # AttributeError = r is None
                    content = {
                        "success": False,
                        "id": '',
                        "info": {},
                    }

                if r.status_code != requests.codes.ok \
                        or not content.get('success'):

                    # We had a problem
                    status_str = \
                        NotifyPushy.http_response_code_lookup(
                            r.status_code, PUSHY_HTTP_ERROR_MAP)

                    self.logger.warning(
                        'Failed to send Pushy notification to {}: '
                        '{}{}error={}.'.format(
                            target,
                            status_str,
                            ', ' if status_str else '',
                            r.status_code))

                    self.logger.debug(
                        'Response Details:\r\n{}'.format(r.content))

                    has_error = True
                    continue

                else:
                    self.logger.info(
                        'Sent Pushy notification to %s.' % target)

            except requests.RequestException as e:
                self.logger.warning(
                    'A Connection error occurred sending Pushy:%s '
                    'notification', target)
                self.logger.debug('Socket Exception: %s' % str(e))

                has_error = True
                continue

        return not has_error

    def url(self, privacy=False, *args, **kwargs):
        """
        Returns the URL built dynamically based on specified arguments.
        """

        # Define any URL parameters
        params = {}
        if self.sound:
            params['sound'] = self.sound

        if self.badge is not None:
            params['badge'] = str(self.badge)

        # Extend our parameters
        params.update(self.url_parameters(privacy=privacy, *args, **kwargs))

        return '{schema}://{apikey}/{targets}/?{params}'.format(
            schema=self.secure_protocol,
            apikey=self.pprint(self.apikey, privacy, safe=''),
            targets='/'.join(
                [NotifyPushy.quote(x, safe='@#') for x in chain(
                    # Topics are prefixed with a pound/hashtag symbol
                    ['#{}'.format(x) for x in self.topics],
                    # Devices
                    ['@{}'.format(x) for x in self.devices],
                )]),
            params=NotifyPushy.urlencode(params))

    def __len__(self):
        """
        Returns the number of targets associated with this notification
        """
        return len(self.topics) + len(self.devices)

    @staticmethod
    def parse_url(url):
        """
        Parses the URL and returns enough arguments that can allow
        us to re-instantiate this object.

        """
        results = NotifyBase.parse_url(url, verify_host=False)
        if not results:
            # We're done early as we couldn't load the results
            return results

        # Token
        results['apikey'] = NotifyPushy.unquote(results['host'])

        # Retrieve all of our targets
        results['targets'] = NotifyPushy.split_path(results['fullpath'])

        # Get the sound
        if 'sound' in results['qsd'] and len(results['qsd']['sound']):
            results['sound'] = \
                NotifyPushy.unquote(results['qsd']['sound'])

        # Badge
        if 'badge' in results['qsd'] and results['qsd']['badge']:
            results['badge'] = NotifyPushy.unquote(
                results['qsd']['badge'].strip())

        # Support key variable to store Secret API Key
        if 'key' in results['qsd'] and len(results['qsd']['key']):
            results['apikey'] = results['qsd']['key']

        # The 'to' makes it easier to use yaml configuration
        if 'to' in results['qsd'] and len(results['qsd']['to']):
            results['targets'] += \
                NotifyPushy.parse_list(results['qsd']['to'])

        return results
