Catt (chromecast) indicator for Waybar

config.json

"custom/cast": {
  "format": "{icon} {}",
  "tooltip": true,
  "interval": 3,
    "return-type": "json", 
  "format-icons": {
    "default": "🎜"
},
"exec": "/PATH/TO/waybar-catt.py",
  "exec-if": "nmcli -t | grep -q NAME_OF_YOUR_HOME_WIFI",
  "on-click": "catt play_toggle && rm /tmp/cattstatus"
}

waybar-catt.py

#!/usr/bin/env python

import subprocess
import datetime
import json
from html import escape
import re
import os
import time


data = {}
path = "/tmp/cattstatus"
now = time.time()

should_check_again = False
if os.path.exists(path):
    with open(path, "r") as f:
        try:
            output = json.loads(f.read())
        except:
            should_check_again = True
            output = False
        if output:
            if 'duration' in output:
                try:
                    if now > output['duration']-output['current_time']+output['time_now']:
                        should_check_again = True
                except:
                    should_check_again = True
            else:
                should_check_again = True
else:
    should_check_again = True

if should_check_again:
    output = subprocess.check_output("catt info -j", shell=True)
    output = json.loads(output.decode("utf-8"))
    now = time.time()

    with open(path, "w") as f:
        output['time_now'] = now
        f.write(json.dumps(output))


def formatTime(seconds):
    seconds = int(seconds)
    g = time.gmtime(seconds)
    return str(g.tm_min)+":"+str(g.tm_sec).zfill(2)


if 'duration' in output:
    total_length = formatTime(output['duration'])
    current_time = formatTime(output['current_time']+(now-output['time_now']))
    title = escape(output['media_metadata']['title'])
    album = escape(output['media_metadata']['albumName'])
    artist = escape(output['media_metadata']['artist'])

    data['text'] = re.sub("[\(\[].*?[\)\]]", "", title).strip()
    data['tooltip'] = f"🎜 <b>{title}</b> ({current_time}/{total_length})\n {album}\n {artist}"

    print(json.dumps(data))