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bazarr/libs/apprise/plugins/NotifyDiscord.py
2019-06-07 07:16:07 -04:00

443 lines
14 KiB
Python

# -*- coding: utf-8 -*-
#
# Copyright (C) 2019 Chris Caron <lead2gold@gmail.com>
# All rights reserved.
#
# This code is licensed under the MIT License.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files(the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions :
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# For this to work correctly you need to create a webhook. To do this just
# click on the little gear icon next to the channel you're part of. From
# here you'll be able to access the Webhooks menu and create a new one.
#
# When you've completed, you'll get a URL that looks a little like this:
# https://discordapp.com/api/webhooks/417429632418316298/\
# JHZ7lQml277CDHmQKMHI8qBe7bk2ZwO5UKjCiOAF7711o33MyqU344Qpgv7YTpadV_js
#
# Simplified, it looks like this:
# https://discordapp.com/api/webhooks/WEBHOOK_ID/WEBHOOK_TOKEN
#
# This plugin will simply work using the url of:
# discord://WEBHOOK_ID/WEBHOOK_TOKEN
#
# API Documentation on Webhooks:
# - https://discordapp.com/developers/docs/resources/webhook
#
import re
import requests
from json import dumps
from .NotifyBase import NotifyBase
from ..common import NotifyImageSize
from ..common import NotifyFormat
from ..common import NotifyType
from ..utils import parse_bool
from ..AppriseLocale import gettext_lazy as _
class NotifyDiscord(NotifyBase):
"""
A wrapper to Discord Notifications
"""
# The default descriptive name associated with the Notification
service_name = 'Discord'
# The services URL
service_url = 'https://discordapp.com/'
# The default secure protocol
secure_protocol = 'discord'
# A URL that takes you to the setup/help of the specific protocol
setup_url = 'https://github.com/caronc/apprise/wiki/Notify_discord'
# Discord Webhook
notify_url = 'https://discordapp.com/api/webhooks'
# Allows the user to specify the NotifyImageSize object
image_size = NotifyImageSize.XY_256
# The maximum allowable characters allowed in the body per message
body_maxlen = 2000
# Define object templates
templates = (
'{schema}://{webhook_id}/{webhook_token}',
'{schema}://{botname}@{webhook_id}/{webhook_token}',
)
# Define our template tokens
template_tokens = dict(NotifyBase.template_tokens, **{
'botname': {
'name': _('Bot Name'),
'type': 'string',
'map_to': 'user',
},
'webhook_id': {
'name': _('Webhook ID'),
'type': 'string',
'private': True,
'required': True,
},
'webhook_token': {
'name': _('Webhook Token'),
'type': 'string',
'private': True,
'required': True,
},
})
# Define our template arguments
template_args = dict(NotifyBase.template_args, **{
'tts': {
'name': _('Text To Speech'),
'type': 'bool',
'default': False,
},
'avatar': {
'name': _('Avatar Image'),
'type': 'bool',
'default': True,
},
'footer': {
'name': _('Display Footer'),
'type': 'bool',
'default': False,
},
'footer_logo': {
'name': _('Footer Logo'),
'type': 'bool',
'default': True,
},
'image': {
'name': _('Include Image'),
'type': 'bool',
'default': False,
'map_to': 'include_image',
},
})
def __init__(self, webhook_id, webhook_token, tts=False, avatar=True,
footer=False, footer_logo=True, include_image=False,
**kwargs):
"""
Initialize Discord Object
"""
super(NotifyDiscord, self).__init__(**kwargs)
if not webhook_id:
msg = 'An invalid Client ID was specified.'
self.logger.warning(msg)
raise TypeError(msg)
if not webhook_token:
msg = 'An invalid Webhook Token was specified.'
self.logger.warning(msg)
raise TypeError(msg)
# Store our data
self.webhook_id = webhook_id
self.webhook_token = webhook_token
# Text To Speech
self.tts = tts
# Over-ride Avatar Icon
self.avatar = avatar
# Place a footer
self.footer = footer
# include a footer_logo in footer
self.footer_logo = footer_logo
# Place a thumbnail image inline with the message body
self.include_image = include_image
return
def send(self, body, title='', notify_type=NotifyType.INFO, **kwargs):
"""
Perform Discord Notification
"""
headers = {
'User-Agent': self.app_id,
'Content-Type': 'multipart/form-data',
}
# Prepare JSON Object
payload = {
# Text-To-Speech
'tts': self.tts,
# If Text-To-Speech is set to True, then we do not want to wait
# for the whole message before continuing. Otherwise, we wait
'wait': self.tts is False,
}
# Acquire image_url
image_url = self.image_url(notify_type)
if self.notify_format == NotifyFormat.MARKDOWN:
# Use embeds for payload
payload['embeds'] = [{
'provider': {
'name': self.app_id,
'url': self.app_url,
},
'title': title,
'type': 'rich',
'description': body,
# Our color associated with our notification
'color': self.color(notify_type, int),
}]
# Break titles out so that we can sort them in embeds
fields = self.extract_markdown_sections(body)
if len(fields) > 0:
# Apply our additional parsing for a better presentation
# Swap first entry for description
payload['embeds'][0]['description'] = \
fields[0].get('name') + fields[0].get('value')
payload['embeds'][0]['fields'] = fields[1:]
if self.footer:
# Acquire logo URL
logo_url = self.image_url(notify_type, logo=True)
# Set Footer text to our app description
payload['embeds'][0]['footer'] = {
'text': self.app_desc,
}
if self.footer_logo and logo_url:
payload['embeds'][0]['footer']['icon_url'] = logo_url
if self.include_image and image_url:
payload['embeds'][0]['thumbnail'] = {
'url': image_url,
'height': 256,
'width': 256,
}
else:
# not markdown
payload['content'] = \
body if not title else "{}\r\n{}".format(title, body)
if self.avatar and image_url:
payload['avatar_url'] = image_url
if self.user:
# Optionally override the default username of the webhook
payload['username'] = self.user
# Construct Notify URL
notify_url = '{0}/{1}/{2}'.format(
self.notify_url,
self.webhook_id,
self.webhook_token,
)
self.logger.debug('Discord POST URL: %s (cert_verify=%r)' % (
notify_url, self.verify_certificate,
))
self.logger.debug('Discord 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,
)
if r.status_code not in (
requests.codes.ok, requests.codes.no_content):
# We had a problem
status_str = \
NotifyBase.http_response_code_lookup(r.status_code)
self.logger.warning(
'Failed to send Discord notification: '
'{}{}error={}.'.format(
status_str,
', ' if status_str else '',
r.status_code))
self.logger.debug('Response Details:\r\n{}'.format(r.content))
# Return; we're done
return False
else:
self.logger.info('Sent Discord notification.')
except requests.RequestException as e:
self.logger.warning(
'A Connection error occured sending Discord '
'notification.'
)
self.logger.debug('Socket Exception: %s' % str(e))
return False
return True
def url(self):
"""
Returns the URL built dynamically based on specified arguments.
"""
# Define any arguments set
args = {
'format': self.notify_format,
'overflow': self.overflow_mode,
'tts': 'yes' if self.tts else 'no',
'avatar': 'yes' if self.avatar else 'no',
'footer': 'yes' if self.footer else 'no',
'footer_logo': 'yes' if self.footer_logo else 'no',
'image': 'yes' if self.include_image else 'no',
'verify': 'yes' if self.verify_certificate else 'no',
}
return '{schema}://{webhook_id}/{webhook_token}/?{args}'.format(
schema=self.secure_protocol,
webhook_id=NotifyDiscord.quote(self.webhook_id, safe=''),
webhook_token=NotifyDiscord.quote(self.webhook_token, safe=''),
args=NotifyDiscord.urlencode(args),
)
@staticmethod
def parse_url(url):
"""
Parses the URL and returns enough arguments that can allow
us to substantiate this object.
Syntax:
discord://webhook_id/webhook_token
"""
results = NotifyBase.parse_url(url)
if not results:
# We're done early as we couldn't load the results
return results
# Store our webhook ID
webhook_id = NotifyDiscord.unquote(results['host'])
# Now fetch our tokens
try:
webhook_token = \
NotifyDiscord.split_path(results['fullpath'])[0]
except IndexError:
# Force some bad values that will get caught
# in parsing later
webhook_token = None
results['webhook_id'] = webhook_id
results['webhook_token'] = webhook_token
# Text To Speech
results['tts'] = parse_bool(results['qsd'].get('tts', False))
# Use Footer
results['footer'] = parse_bool(results['qsd'].get('footer', False))
# Use Footer Logo
results['footer_logo'] = \
parse_bool(results['qsd'].get('footer_logo', True))
# Update Avatar Icon
results['avatar'] = parse_bool(results['qsd'].get('avatar', True))
# Use Thumbnail
if 'thumbnail' in results['qsd']:
# Deprication Notice issued for v0.7.5
NotifyDiscord.logger.deprecate(
'The Discord URL contains the parameter '
'"thumbnail=" which will be deprecated in an upcoming '
'release. Please use "image=" instead.'
)
# use image= for consistency with the other plugins but we also
# support thumbnail= for backwards compatibility.
results['include_image'] = \
parse_bool(results['qsd'].get(
'image', results['qsd'].get('thumbnail', False)))
return results
@staticmethod
def parse_native_url(url):
"""
Support https://discordapp.com/api/webhooks/WEBHOOK_ID/WEBHOOK_TOKEN
"""
result = re.match(
r'^https?://discordapp\.com/api/webhooks/'
r'(?P<webhook_id>[0-9]+)/'
r'(?P<webhook_token>[A-Z0-9_-]+)/?'
r'(?P<args>\?[.+])?$', url, re.I)
if result:
return NotifyDiscord.parse_url(
'{schema}://{webhook_id}/{webhook_token}/{args}'.format(
schema=NotifyDiscord.secure_protocol,
webhook_id=result.group('webhook_id'),
webhook_token=result.group('webhook_token'),
args='' if not result.group('args')
else result.group('args')))
return None
@staticmethod
def extract_markdown_sections(markdown):
"""
Takes a string in a markdown type format and extracts
the headers and their corresponding sections into individual
fields that get passed as an embed entry to Discord.
"""
regex = re.compile(
r'^\s*#+\s*(?P<name>[^#\n]+)([ \r\t\v#])?'
r'(?P<value>([^ \r\t\v#].+?)(\n(?!\s#))|\s*$)', flags=re.S | re.M)
common = regex.finditer(markdown)
fields = list()
for el in common:
d = el.groupdict()
fields.append({
'name': d.get('name', '').strip(),
'value': '```md\n' + d.get('value', '').strip() + '\n```'
})
return fields