add file notification platform

homeassistant/components/notify/file.py

@@ -11,28 +11,22 @@ to your config/configuration.yaml
 
 notify:
   platform: file
-  path: PATH_TO_FILE
   filename: FILENAME
   timestamp: 1 or 0
 
 Variables:
 
-path
-*Required
-Path to the directory that contains your file. You need to have write
-permission for that directory. The directory will be created if it doesn't
-exist.
-
 filename
 *Required
-Name of the file to use. The file will be created if it doesn't exist.
+Name of the file to use. The file will be created if it doesn't exist and saved
+in your config/ folder.
 
-date
+timestamp
 *Required
 Add a timestamp to the entry, valid entries are 1 or 0.
 """
 import logging
-from pathlib import (Path, PurePath)
+import os
 
 import homeassistant.util.dt as dt_util
 from homeassistant.helpers import validate_config
@@ -46,51 +40,37 @@ def get_service(hass, config):
     """ Get the file notification service. """
 
     if not validate_config(config,
-                           {DOMAIN: ['path',
-                                     'filename',
+                           {DOMAIN: ['filename',
                                      'timestamp']},
                            _LOGGER):
         return None
 
-    path = config[DOMAIN]['path']
     filename = config[DOMAIN]['filename']
-    filepath = Path(path, filename)
+    timestamp = config[DOMAIN]['timestamp']
 
-    # pylint: disable=no-member
-    if not filepath.parent.exists():
-        try:
-            filepath.parent.mkdir(parents=True)
-            filepath.touch(mode=0o644, exist_ok=True)
-        except:
-            _LOGGER.exception("No write permission to given location.")
-            # raise PermissionError('') from None
-            # raise FileNotFoundError('') from None
-            return None
-
-    return FileNotificationService(filepath, config[DOMAIN]['timestamp'])
+    return FileNotificationService(hass, filename, timestamp)
 
 
 # pylint: disable=too-few-public-methods
 class FileNotificationService(BaseNotificationService):
     """ Implements notification service for the File service. """
 
-    # pylint: disable=no-member
-    def __init__(self, filepath, add_timestamp):
-        self._filepath = str(PurePath(filepath))
-        self._add_timestamp = add_timestamp
+    def __init__(self, hass, filename, add_timestamp):
+        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. """
 
-        file = open(self._filepath, 'a')
-        if not Path(self._filepath).stat().st_size:
+        file = open(self.filepath, 'a')
+        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:
+        if self.add_timestamp == 1:
             text = '{} {}\n'.format(dt_util.utcnow(), message)
             file.write(text)
         else: