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bazarr/libs/apprise/plugins/NotifyDiscord.py
2020-09-14 08:24:26 -04:00

531 lines
17 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://discord.com/api/webhooks/417429632418316298/\
# JHZ7lQml277CDHmQKMHI8qBe7bk2ZwO5UKjCiOAF7711o33MyqU344Qpgv7YTpadV_js
#
# Simplified, it looks like this:
# https://discord.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://discord.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 ..utils import validate_regex
from ..AppriseLocale import gettext_lazy as _
from ..attachment.AttachBase import AttachBase
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://discord.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://discord.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,
},
'avatar_url': {
'name': _('Avatar URL'),
'type': 'string',
},
'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,
avatar_url=None, **kwargs):
"""
Initialize Discord Object
"""
super(NotifyDiscord, self).__init__(**kwargs)
# Webhook ID (associated with project)
self.webhook_id = validate_regex(webhook_id)
if not self.webhook_id:
msg = 'An invalid Discord Webhook ID ' \
'({}) was specified.'.format(webhook_id)
self.logger.warning(msg)
raise TypeError(msg)
# Webhook Token (associated with project)
self.webhook_token = validate_regex(webhook_token)
if not self.webhook_token:
msg = 'An invalid Discord Webhook Token ' \
'({}) was specified.'.format(webhook_token)
self.logger.warning(msg)
raise TypeError(msg)
# 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
# Avatar URL
# This allows a user to provide an over-ride to the otherwise
# dynamically generated avatar url images
self.avatar_url = avatar_url
return
def send(self, body, title='', notify_type=NotifyType.INFO, attach=None,
**kwargs):
"""
Perform Discord Notification
"""
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 or self.avatar_url):
payload['avatar_url'] = \
self.avatar_url if self.avatar_url else image_url
if self.user:
# Optionally override the default username of the webhook
payload['username'] = self.user
if not self._send(payload):
# We failed to post our message
return False
if attach:
# Update our payload; the idea is to preserve it's other detected
# and assigned values for re-use here too
payload.update({
# Text-To-Speech
'tts': False,
# Wait until the upload has posted itself before continuing
'wait': True,
})
# Remove our text/title based content for attachment use
if 'embeds' in payload:
# Markdown
del payload['embeds']
if 'content' in payload:
# Markdown
del payload['content']
# Send our attachments
for attachment in attach:
self.logger.info(
'Posting Discord Attachment {}'.format(attachment.name))
if not self._send(payload, attach=attachment):
# We failed to post our message
return False
# Otherwise return
return True
def _send(self, payload, attach=None, **kwargs):
"""
Wrapper to the requests (post) object
"""
# Our headers
headers = {
'User-Agent': self.app_id,
}
# 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()
# Perform some simple error checking
if isinstance(attach, AttachBase):
if not attach:
# We could not access the attachment
self.logger.error(
'Could not access attachment {}.'.format(
attach.url(privacy=True)))
return False
self.logger.debug(
'Posting Discord attachment {}'.format(
attach.url(privacy=True)))
# Our attachment path (if specified)
files = None
try:
# Open our attachment path if required:
if attach:
files = {'file': (attach.name, open(attach.path, 'rb'))}
else:
headers['Content-Type'] = 'application/json; charset=utf-8'
r = requests.post(
notify_url,
data=payload if files else dumps(payload),
headers=headers,
files=files,
verify=self.verify_certificate,
timeout=self.request_timeout,
)
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 {}to Discord notification: '
'{}{}error={}.'.format(
attach.name if attach else '',
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 {}.'.format(
'attachment' if attach else 'notification'))
except requests.RequestException as e:
self.logger.warning(
'A Connection error occurred posting {}to Discord.'.format(
attach.name if attach else ''))
self.logger.debug('Socket Exception: %s' % str(e))
return False
except (OSError, IOError) as e:
self.logger.warning(
'An I/O error occurred while reading {}.'.format(
attach.name if attach else 'attachment'))
self.logger.debug('I/O Exception: %s' % str(e))
return False
finally:
# Close our file (if it's open) stored in the second element
# of our files tuple (index 1)
if files:
files['file'][1].close()
return True
def url(self, privacy=False, *args, **kwargs):
"""
Returns the URL built dynamically based on specified arguments.
"""
# Define any URL parameters
params = {
'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',
}
# Extend our parameters
params.update(self.url_parameters(privacy=privacy, *args, **kwargs))
return '{schema}://{webhook_id}/{webhook_token}/?{params}'.format(
schema=self.secure_protocol,
webhook_id=self.pprint(self.webhook_id, privacy, safe=''),
webhook_token=self.pprint(self.webhook_token, privacy, safe=''),
params=NotifyDiscord.urlencode(params),
)
@staticmethod
def parse_url(url):
"""
Parses the URL and returns enough arguments that can allow
us to re-instantiate this object.
Syntax:
discord://webhook_id/webhook_token
"""
results = NotifyBase.parse_url(url, verify_host=False)
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))
# Boolean to include an image or not
results['include_image'] = parse_bool(results['qsd'].get(
'image', NotifyDiscord.template_args['image']['default']))
# Extract avatar url if it was specified
if 'avatar_url' in results['qsd']:
results['avatar_url'] = \
NotifyDiscord.unquote(results['qsd']['avatar_url'])
return results
@staticmethod
def parse_native_url(url):
"""
Support https://discord.com/api/webhooks/WEBHOOK_ID/WEBHOOK_TOKEN
Support Legacy URL as well:
https://discordapp.com/api/webhooks/WEBHOOK_ID/WEBHOOK_TOKEN
"""
result = re.match(
r'^https?://discord(app)?\.com/api/webhooks/'
r'(?P<webhook_id>[0-9]+)/'
r'(?P<webhook_token>[A-Z0-9_-]+)/?'
r'(?P<params>\?.+)?$', url, re.I)
if result:
return NotifyDiscord.parse_url(
'{schema}://{webhook_id}/{webhook_token}/{params}'.format(
schema=NotifyDiscord.secure_protocol,
webhook_id=result.group('webhook_id'),
webhook_token=result.group('webhook_token'),
params='' if not result.group('params')
else result.group('params')))
return None
@staticmethod
def extract_markdown_sections(markdown):
"""
Takes a string in a markdown type format and extracts
the headers and their corresponding sections into individual
fields that get passed as an embed entry to Discord.
"""
regex = re.compile(
r'\s*#[# \t\v]*(?P<name>[^\n]+)(\n|\s*$)'
r'\s*((?P<value>[^#].+?)(?=\s*$|[\r\n]+\s*#))?', flags=re.S)
common = regex.finditer(markdown)
fields = list()
for el in common:
d = el.groupdict()
fields.append({
'name': d.get('name', '').strip('# \r\n\t\v'),
'value': '```md\n' +
(d.get('value').strip() if d.get('value') else '') + '\n```'
})
return fields