core/homeassistant/components/notify/file.py

57 lines
1.8 KiB
Python

"""
Support for file notification.
For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/notify.file/
"""
import logging
import os
import homeassistant.util.dt as dt_util
from homeassistant.components.notify import (
ATTR_TITLE, DOMAIN, BaseNotificationService)
from homeassistant.helpers import validate_config
_LOGGER = logging.getLogger(__name__)
def get_service(hass, config):
"""Get the file notification service."""
if not validate_config({DOMAIN: config},
{DOMAIN: ['filename',
'timestamp']},
_LOGGER):
return None
filename = config['filename']
timestamp = config['timestamp']
return FileNotificationService(hass, filename, timestamp)
# pylint: disable=too-few-public-methods
class FileNotificationService(BaseNotificationService):
"""Implement the notification service for the File service."""
def __init__(self, hass, filename, add_timestamp):
"""Initialize the service."""
self.filepath = os.path.join(hass.config.config_dir, filename)
self.add_timestamp = add_timestamp
def send_message(self, message="", **kwargs):
"""Send a message to a file."""
with open(self.filepath, 'a') as file:
if os.stat(self.filepath).st_size == 0:
title = '{} notifications (Log started: {})\n{}\n'.format(
kwargs.get(ATTR_TITLE),
dt_util.strip_microseconds(dt_util.utcnow()),
'-' * 80)
file.write(title)
if self.add_timestamp == 1:
text = '{} {}\n'.format(dt_util.utcnow(), message)
file.write(text)
else:
text = '{}\n'.format(message)
file.write(text)