# -*- coding: utf-8 -*-
# BSD 2-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.
#
# 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.

# Sign-up with https://burstsms.com/
#
# Define your API Secret here and acquire your API Key
#  - https://can.transmitsms.com/profile
#
import requests

from .NotifyBase import NotifyBase
from ..URLBase import PrivacyMode
from ..common import NotifyType
from ..utils import is_phone_no
from ..utils import parse_phone_no
from ..utils import parse_bool
from ..utils import validate_regex
from ..AppriseLocale import gettext_lazy as _


class BurstSMSCountryCode:
    # Australia
    AU = 'au'
    # New Zeland
    NZ = 'nz'
    # United Kingdom
    UK = 'gb'
    # United States
    US = 'us'


BURST_SMS_COUNTRY_CODES = (
    BurstSMSCountryCode.AU,
    BurstSMSCountryCode.NZ,
    BurstSMSCountryCode.UK,
    BurstSMSCountryCode.US,
)


class NotifyBurstSMS(NotifyBase):
    """
    A wrapper for Burst SMS Notifications
    """

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

    # The services URL
    service_url = 'https://burstsms.com/'

    # The default protocol
    secure_protocol = 'burstsms'

    # The maximum amount of SMS Messages that can reside within a single
    # batch transfer based on:
    #  https://developer.transmitsms.com/#74911cf8-dec6-4319-a499-7f535a7fd08c
    default_batch_size = 500

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

    # Burst SMS uses the http protocol with JSON requests
    notify_url = 'https://api.transmitsms.com/send-sms.json'

    # The maximum length of the body
    body_maxlen = 160

    # A title can not be used for SMS Messages.  Setting this to zero will
    # cause any title (if defined) to get placed into the message body.
    title_maxlen = 0

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

    # Define our template tokens
    template_tokens = dict(NotifyBase.template_tokens, **{
        'apikey': {
            'name': _('API Key'),
            'type': 'string',
            'required': True,
            'regex': (r'^[a-z0-9]+$', 'i'),
            'private': True,
        },
        'secret': {
            'name': _('API Secret'),
            'type': 'string',
            'private': True,
            'required': True,
            'regex': (r'^[a-z0-9]+$', 'i'),
        },
        'sender_id': {
            'name': _('Sender ID'),
            'type': 'string',
            'required': True,
            'map_to': 'source',
        },
        'target_phone': {
            'name': _('Target Phone No'),
            'type': 'string',
            'prefix': '+',
            'regex': (r'^[0-9\s)(+-]+$', 'i'),
            'map_to': 'targets',
        },
        'targets': {
            'name': _('Targets'),
            'type': 'list:string',
            'required': True,
        },
    })

    # Define our template arguments
    template_args = dict(NotifyBase.template_args, **{
        'to': {
            'alias_of': 'targets',
        },
        'from': {
            'alias_of': 'sender_id',
        },
        'key': {
            'alias_of': 'apikey',
        },
        'secret': {
            'alias_of': 'secret',
        },
        'country': {
            'name': _('Country'),
            'type': 'choice:string',
            'values': BURST_SMS_COUNTRY_CODES,
            'default': BurstSMSCountryCode.US,
        },
        # Validity
        # Expire a message send if it is undeliverable (defined in minutes)
        # If set to Zero (0); this is the default and sets the max validity
        # period
        'validity': {
            'name': _('validity'),
            'type': 'int',
            'default': 0
        },
        'batch': {
            'name': _('Batch Mode'),
            'type': 'bool',
            'default': False,
        },
    })

    def __init__(self, apikey, secret, source, targets=None, country=None,
                 validity=None, batch=None, **kwargs):
        """
        Initialize Burst SMS Object
        """
        super().__init__(**kwargs)

        # API Key (associated with project)
        self.apikey = validate_regex(
            apikey, *self.template_tokens['apikey']['regex'])
        if not self.apikey:
            msg = 'An invalid Burst SMS API Key ' \
                  '({}) was specified.'.format(apikey)
            self.logger.warning(msg)
            raise TypeError(msg)

        # API Secret (associated with project)
        self.secret = validate_regex(
            secret, *self.template_tokens['secret']['regex'])
        if not self.secret:
            msg = 'An invalid Burst SMS API Secret ' \
                  '({}) was specified.'.format(secret)
            self.logger.warning(msg)
            raise TypeError(msg)

        if not country:
            self.country = self.template_args['country']['default']

        else:
            self.country = country.lower().strip()
            if country not in BURST_SMS_COUNTRY_CODES:
                msg = 'An invalid Burst SMS country ' \
                      '({}) was specified.'.format(country)
                self.logger.warning(msg)
                raise TypeError(msg)

        # Set our Validity
        self.validity = self.template_args['validity']['default']
        if validity:
            try:
                self.validity = int(validity)

            except (ValueError, TypeError):
                msg = 'The Burst SMS Validity specified ({}) is invalid.'\
                    .format(validity)
                self.logger.warning(msg)
                raise TypeError(msg)

        # Prepare Batch Mode Flag
        self.batch = self.template_args['batch']['default'] \
            if batch is None else batch

        # The Sender ID
        self.source = validate_regex(source)
        if not self.source:
            msg = 'The Account Sender ID specified ' \
                  '({}) is invalid.'.format(source)
            self.logger.warning(msg)
            raise TypeError(msg)

        # Parse our targets
        self.targets = list()

        for target in parse_phone_no(targets):
            # Validate targets and drop bad ones:
            result = is_phone_no(target)
            if not result:
                self.logger.warning(
                    'Dropped invalid phone # '
                    '({}) specified.'.format(target),
                )
                continue

            # store valid phone number
            self.targets.append(result['full'])

        return

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

        if not self.targets:
            self.logger.warning(
                'There are no valid Burst SMS targets to notify.')
            return False

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

        # Prepare our headers
        headers = {
            'User-Agent': self.app_id,
            'Accept': 'application/json',
        }

        # Prepare our authentication
        auth = (self.apikey, self.secret)

        # Prepare our payload
        payload = {
            'countrycode': self.country,
            'message': body,

            # Sender ID
            'from': self.source,

            # The to gets populated in the loop below
            'to': None,
        }

        # Send in batches if identified to do so
        batch_size = 1 if not self.batch else self.default_batch_size

        # Create a copy of the targets list
        targets = list(self.targets)

        for index in range(0, len(targets), batch_size):

            # Prepare our user
            payload['to'] = ','.join(self.targets[index:index + batch_size])

            # Some Debug Logging
            self.logger.debug('Burst SMS POST URL: {} (cert_verify={})'.format(
                self.notify_url, self.verify_certificate))
            self.logger.debug('Burst SMS Payload: {}' .format(payload))

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

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

                if r.status_code != requests.codes.ok:
                    # We had a problem
                    status_str = \
                        NotifyBurstSMS.http_response_code_lookup(
                            r.status_code)

                    self.logger.warning(
                        'Failed to send Burst SMS notification to {} '
                        'target(s): {}{}error={}.'.format(
                            len(self.targets[index:index + batch_size]),
                            status_str,
                            ', ' if status_str else '',
                            r.status_code))

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

                    # Mark our failure
                    has_error = True
                    continue

                else:
                    self.logger.info(
                        'Sent Burst SMS notification to %d target(s).' %
                        len(self.targets[index:index + batch_size]))

            except requests.RequestException as e:
                self.logger.warning(
                    'A Connection error occurred sending Burst SMS '
                    'notification to %d target(s).' %
                    len(self.targets[index:index + batch_size]))
                self.logger.debug('Socket Exception: %s' % str(e))

                # Mark our failure
                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 = {
            'country': self.country,
            'batch': 'yes' if self.batch else 'no',
        }

        if self.validity:
            params['validity'] = str(self.validity)

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

        return '{schema}://{key}:{secret}@{source}/{targets}/?{params}'.format(
            schema=self.secure_protocol,
            key=self.pprint(self.apikey, privacy, safe=''),
            secret=self.pprint(
                self.secret, privacy, mode=PrivacyMode.Secret, safe=''),
            source=NotifyBurstSMS.quote(self.source, safe=''),
            targets='/'.join(
                [NotifyBurstSMS.quote(x, safe='') for x in self.targets]),
            params=NotifyBurstSMS.urlencode(params))

    def __len__(self):
        """
        Returns the number of targets associated with this notification
        """
        #
        # Factor batch into calculation
        #
        batch_size = 1 if not self.batch else self.default_batch_size
        targets = len(self.targets)
        if batch_size > 1:
            targets = int(targets / batch_size) + \
                (1 if targets % batch_size else 0)

        return targets if targets > 0 else 1

    @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

        # The hostname is our source (Sender ID)
        results['source'] = NotifyBurstSMS.unquote(results['host'])

        # Get any remaining targets
        results['targets'] = NotifyBurstSMS.split_path(results['fullpath'])

        # Get our account_side and auth_token from the user/pass config
        results['apikey'] = NotifyBurstSMS.unquote(results['user'])
        results['secret'] = NotifyBurstSMS.unquote(results['password'])

        # API Key
        if 'key' in results['qsd'] and len(results['qsd']['key']):
            # Extract the API Key from an argument
            results['apikey'] = \
                NotifyBurstSMS.unquote(results['qsd']['key'])

        # API Secret
        if 'secret' in results['qsd'] and len(results['qsd']['secret']):
            # Extract the API Secret from an argument
            results['secret'] = \
                NotifyBurstSMS.unquote(results['qsd']['secret'])

        # Support the 'from'  and 'source' variable so that we can support
        # targets this way too.
        # The 'from' makes it easier to use yaml configuration
        if 'from' in results['qsd'] and len(results['qsd']['from']):
            results['source'] = \
                NotifyBurstSMS.unquote(results['qsd']['from'])
        if 'source' in results['qsd'] and len(results['qsd']['source']):
            results['source'] = \
                NotifyBurstSMS.unquote(results['qsd']['source'])

        # Support country
        if 'country' in results['qsd'] and len(results['qsd']['country']):
            results['country'] = \
                NotifyBurstSMS.unquote(results['qsd']['country'])

        # Support validity value
        if 'validity' in results['qsd'] and len(results['qsd']['validity']):
            results['validity'] = \
                NotifyBurstSMS.unquote(results['qsd']['validity'])

        # Get Batch Mode Flag
        if 'batch' in results['qsd'] and len(results['qsd']['batch']):
            results['batch'] = parse_bool(results['qsd']['batch'])

        # Support the 'to' variable so that we can support rooms this way too
        # The 'to' makes it easier to use yaml configuration
        if 'to' in results['qsd'] and len(results['qsd']['to']):
            results['targets'] += \
                NotifyBurstSMS.parse_phone_no(results['qsd']['to'])

        return results