Files
ahriman/src/ahriman/core/report/telegram.py

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4.1 KiB
Python

#
# Copyright (c) 2021-2025 ahriman team.
#
# This file is part of ahriman
# (see https://github.com/arcan1s/ahriman).
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
from typing import ClassVar
from ahriman.core.configuration import Configuration
from ahriman.core.http import SyncHttpClient
from ahriman.core.report.jinja_template import JinjaTemplate
from ahriman.core.report.report import Report
from ahriman.models.package import Package
from ahriman.models.repository_id import RepositoryId
from ahriman.models.result import Result
class Telegram(Report, JinjaTemplate, SyncHttpClient):
"""
telegram report generator
Attributes:
TELEGRAM_API_URL(str): (class attribute) telegram api base url
TELEGRAM_MAX_CONTENT_LENGTH(int): (class attribute) max content length of the message
api_key(str): bot api key
chat_id(str): chat id to post message, either string with @ or integer
template(Path | str): name or path to template for built packages
template_type(str): template message type to be used in parse mode, one of MarkdownV2, HTML, Markdown
"""
TELEGRAM_API_URL: ClassVar[str] = "https://api.telegram.org"
TELEGRAM_MAX_CONTENT_LENGTH: ClassVar[int] = 4096
def __init__(self, repository_id: RepositoryId, configuration: Configuration, section: str) -> None:
"""
Args:
repository_id(RepositoryId): repository unique identifier
configuration(Configuration): configuration instance
section(str): settings section name
"""
Report.__init__(self, repository_id, configuration)
JinjaTemplate.__init__(self, repository_id, configuration, section)
SyncHttpClient.__init__(self, configuration, section)
self.api_key = configuration.get(section, "api_key")
self.chat_id = configuration.get(section, "chat_id")
self.template = configuration.get(section, "template", fallback=None) or \
configuration.getpath(section, "template_path")
self.template_type = configuration.get(section, "template_type", fallback="HTML")
def _send(self, text: str) -> None:
"""
send message to telegram channel
Args:
text(str): message body text
"""
self.make_request("POST", f"{self.TELEGRAM_API_URL}/bot{self.api_key}/sendMessage",
data={"chat_id": self.chat_id, "text": text, "parse_mode": self.template_type})
def generate(self, packages: list[Package], result: Result) -> None:
"""
generate report for the specified packages
Args:
packages(list[Package]): list of packages to generate report
result(Result): build result
Raises:
ValueError: impossible to split message by chunks
"""
if not result.success:
return
text = self.make_html(result, self.template)
# telegram content is limited by 4096 symbols, so we are going to split the message by new lines
# to fit into this restriction
while len(text) > self.TELEGRAM_MAX_CONTENT_LENGTH:
position = text.rfind("\n", 0, self.TELEGRAM_MAX_CONTENT_LENGTH)
if position == -1:
# normally should not happen, but we allow templates editing
raise ValueError("substring not found")
portion, text = text[:position], text[position + 1:] # +1 to exclude newline we split
self._send(portion)
# send remaining (or full in case if size is less than max length) text
self._send(text)