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#!/usr/bin/env python3
import json
import re
import sys
import time
from glob import glob
from pydbus import SessionBus
bus = SessionBus()
STATUS_UPDATE_PERIOD_MILLISECONDS = 1000
DESKTOP_NOTIFICATION_DURATION_SECONDS = 15
class NotificationMessage:
MESSAGE_LENGTH = 117
def __init__(self, app_name, summary, body):
self.app_name = app_name
self.summary = summary
self.body = body.replace('\n', ' ')
def to_components(self):
if self.app_name == 'Slack':
components = self.slack_message_to_components()
elif self.app_name == 'Telegram Desktop':
components = self.telegram_message_to_components()
else:
components = self.regular_message_to_components()
length = sum(len(component['full_text']) for component in components)
if length <= self.MESSAGE_LENGTH:
components[-1]['full_text'] += ' ' * (self.MESSAGE_LENGTH - length)
else:
components[-1]['full_text'] = components[-1]['full_text'][:-(length - self.MESSAGE_LENGTH)]
return components
def regular_message_to_components(self):
return [
{
'full_text': f'[{self.app_name}] ',
'separator': False,
'separator_block_width': 0,
},
{
'full_text': self.summary,
'color': '#00ffff',
'separator': False,
'separator_block_width': 0,
},
{
'full_text': f': {self.body}',
}
]
def telegram_message_to_components(self):
self.app_name = 'Telegram'
return self.regular_message_to_components()
def slack_message_to_components(self):
sender = None
channel = None
body = self.body
match = re.match(r'^New message from (.*)', self.summary)
if match:
sender = match.group(1)
else:
match = re.match(r'^New message in (.*)', self.summary)
if match:
channel = match.group(1)
match = re.match(r'^([^:]*): (.*)', self.body)
if match:
sender = match.group(1)
body = match.group(2)
components = [
{
'full_text': '[Slack] ',
'separator': False,
'separator_block_width': 0,
}
]
if channel:
components.extend([
{'full_text': channel, 'color': '#00ff00',
'separator': False, 'separator_block_width': 0},
{'full_text': ': ',
'separator': False, 'separator_block_width': 0},
])
if sender:
components.extend([
{'full_text': sender, 'color': '#00ffff',
'separator': False, 'separator_block_width': 0},
{'full_text': ': ',
'separator': False, 'separator_block_width': 0},
])
components.append({'full_text': body})
return components
class Notify:
"""
<node>
<interface name="org.freedesktop.Notifications">
<method name="GetServerInformation">
<arg name="return_name" type="s" direction="out"/>
<arg name="return_vendor" type="s" direction="out"/>
<arg name="return_version" type="s" direction="out"/>
<arg name="return_spec_version" type="s" direction="out"/>
</method>
<method name="GetCapabilities">
<arg name="return_caps" type="as" direction="out"/>
</method>
<method name="CloseNotification">
<arg name="id" type="u" direction="in"/>
</method>
<method name="Notify">
<arg name="app_name" type="s" direction="in"/>
<arg name="id" type="u" direction="in"/>
<arg name="icon" type="s" direction="in"/>
<arg name="summary" type="s" direction="in"/>
<arg name="body" type="s" direction="in"/>
<arg name="actions" type="as" direction="in"/>
<arg name="hints" type="a{sv}" direction="in"/>
<annotation name="org.qtproject.QtDBus.QtTypeName.In6" value="QVariantMap"/>
<arg name="timeout" type="i" direction="in"/>
<arg name="return_id" type="u" direction="out"/>
</method>
</interface>
</node>
"""
def __init__(self):
self.last_message = None
self.last_message_time = 0
def get_message_to_show(self):
if time.time() - self.last_message_time < DESKTOP_NOTIFICATION_DURATION_SECONDS:
return self.last_message.to_components()
return []
def Notify(self, app_name, id, icon, summary, body, actions, hints, timeout):
#print("Notify", args)
self.last_message = NotificationMessage(app_name, summary, body)
self.last_message_time = time.time()
emit_components()
return 42
def GetServerInformation(self, *args, **kwargs):
#print("GetServerInformation", args, kwargs)
return ("elmord-notify", "https://elmord.org", "0.0.1", "1")
def GetCapabilities(self, *args, **kwargs):
#print("GetCapabilities", args, kwargs)
return ["body", "body-hyperlinks", "body-images"]
def CloseNotification(self, *args, **kwargs):
self.last_message_time = 0
emit_components()
#print("CloseNotification", args, kwargs)
notify = Notify()
try:
bus.publish("org.freedesktop.Notifications", notify)
except RuntimeError as error:
print(str(error), file=sys.stderr)
from gi.repository import GLib
loop = GLib.MainLoop()
[battery_directory] = glob('/sys/class/power_supply/BAT*/')
def get_battery_status():
with open(f'{battery_directory}/capacity') as f:
percentage = int(f.read().strip())
with open(f'{battery_directory}/status') as f:
status = f.read().strip()
if status == 'Discharging':
if percentage < 10:
color = '#ff4040'
elif percentage < 25:
color = '#ffff00'
else:
color = '#ffffff'
elif status in ['Charging', 'Full']:
color = '#b0b0ff'
else:
color = '#ffffff'
return [
{
'full_text': f'{percentage}%',
'color': color,
},
]
def emit_components():
components = []
components.extend(notify.get_message_to_show())
components.extend([{'full_text': time.strftime('%a %b %d')}])
components.extend([{'full_text': time.strftime("(%H:%M)", time.gmtime())}])
components.extend([{'full_text': time.strftime('%H:%M')}])
components.extend(get_battery_status())
print(json.dumps(components), ",", flush=True)
def tick(*args, **kwargs):
emit_components()
GLib.timeout_add(STATUS_UPDATE_PERIOD_MILLISECONDS, tick)
def print_desktop_notification():
print(last_desktop_notification_content, flush=True)
print('{"version": 1}\n[')
tick()
loop.run()
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