# -*- 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.

#
# API Docs: https://developers.line.biz/en/reference/messaging-api/

import requests
import re
from json import dumps

from .base import NotifyBase
from ..url import PrivacyMode
from ..common import NotifyType
from ..common import NotifyImageSize
from ..utils import validate_regex
from ..utils import parse_list
from ..utils import parse_bool
from ..locale import gettext_lazy as _


# Used to break path apart into list of streams
TARGET_LIST_DELIM = re.compile(r'[ \t\r\n,#\\/]+')


class NotifyLine(NotifyBase):
    """
    A wrapper for Line Notifications
    """

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

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

    # Secure Protocol
    secure_protocol = 'line'

    # The URL refererenced for remote Notifications
    notify_url = 'https://api.line.me/v2/bot/message/push'

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

    # We don't support titles for Line notifications
    title_maxlen = 0

    # Maximum body length is 5000
    body_maxlen = 5000

    # Allows the user to specify the NotifyImageSize object; this is supported
    # through the webhook
    image_size = NotifyImageSize.XY_128

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

    # Define our template tokens
    template_tokens = dict(NotifyBase.template_tokens, **{
        'token': {
            'name': _('Access Token'),
            'type': 'string',
            'private': True,
            'required': True
        },
        'target_user': {
            'name': _('Target User'),
            'type': 'string',
            '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',
        },
        'image': {
            'name': _('Include Image'),
            'type': 'bool',
            'default': True,
            'map_to': 'include_image',
        },
    })

    def __init__(self, token, targets=None, include_image=True, **kwargs):
        """
        Initialize Line Object
        """
        super().__init__(**kwargs)

        # Long-Lived Access token (generated from User Profile)
        self.token = validate_regex(token)
        if not self.token:
            msg = 'An invalid Access Token ' \
                  '({}) was specified.'.format(token)
            self.logger.warning(msg)
            raise TypeError(msg)

        # Display our Apprise Image
        self.include_image = include_image

        # Set up our targets
        self.targets = parse_list(targets)

        # A dictionary of cached users
        self.__cached_users = dict()

        return

    def send(self, body, title='', notify_type=NotifyType.INFO, **kwargs):
        """
        Send our Line Notification
        """

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

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

        # Prepare our headers
        headers = {
            'User-Agent': self.app_id,
            'Content-Type': 'application/json',
            'Authorization': 'Bearer {}'.format(self.token),
        }

        # Prepare our persistent_notification.create payload
        payload = {
            "to": None,
            "messages": [
                {
                    "type": "text",
                    "text": body,
                    "sender": {
                        "name": self.app_id,
                    }

                }
            ]
        }

        # Acquire our image url if configured to do so
        image_url = None if not self.include_image else \
            self.image_url(notify_type)

        if image_url:
            payload["messages"][0]["sender"]["iconUrl"] = image_url

        # Create a copy of the target list
        targets = list(self.targets)
        while len(targets):
            target = targets.pop(0)

            payload['to'] = target

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

            # Always call throttle before any remote server i/o is made
            self.throttle()
            try:
                r = requests.post(
                    self.notify_url,
                    data=dumps(payload),
                    headers=headers,
                    verify=self.verify_certificate,
                    timeout=self.request_timeout,
                )
                if r.status_code != requests.codes.ok:
                    # We had a problem
                    status_str = \
                        NotifyLine.http_response_code_lookup(
                            r.status_code)

                    self.logger.warning(
                        'Failed to send Line notification to {}: '
                        '{}{}error={}.'.format(
                            target,
                            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 Line notification to {}.'.format(target))

            except requests.RequestException as e:
                self.logger.warning(
                    'A Connection error occurred sending Line '
                    'notification to {}.'.format(target))
                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 = {
            'image': 'yes' if self.include_image else 'no',
        }

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

        return '{schema}://{token}/{targets}?{params}'.format(
            schema=self.secure_protocol,
            # never encode hostname since we're expecting it to be a valid one
            token=self.pprint(
                self.token, privacy, mode=PrivacyMode.Secret, safe=''),
            targets='/'.join(
                [self.pprint(x, privacy, safe='') for x in self.targets]),
            params=NotifyLine.urlencode(params),
        )

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

    @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

        # Get unquoted entries
        results['targets'] = NotifyLine.split_path(results['fullpath'])

        # The 'token' makes it easier to use yaml configuration
        if 'token' in results['qsd'] and len(results['qsd']['token']):
            results['token'] = \
                NotifyLine.unquote(results['qsd']['token'])
        else:
            results['token'] = NotifyLine.unquote(results['host'])

            # Line Long Lived Tokens included forward slashes in them.
            # As a result we need to parse further into our path and look
            # for the entry that ends in an equal symbol.
            if not results['token'].endswith('='):
                for index, entry in enumerate(
                        list(results['targets']), start=1):
                    if entry.endswith('='):
                        # Found
                        results['token'] += \
                            '/' + '/'.join(results['targets'][0:index])
                        results['targets'] = results['targets'][index:]
                        break

        # Include images with our message
        results['include_image'] = \
            parse_bool(results['qsd'].get('image', True))

        # 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'] += [x for x in filter(
                bool, TARGET_LIST_DELIM.split(
                    NotifyLine.unquote(results['qsd']['to'])))]

        return results
