macos: toogle mic + google meet by chrome extension "Mute for google meet" using global key command + control + m

karabiner.json

...

"simple_modifications": [
                {
                    "from": {
                        "key_code": "right_command"
                    },
                    "to": [
                        {
                            "shell_command": "open -a 'iTerm.app'"
                        }
                    ]
                },
                {
                    "from": {
                        "key_code": "right_option"
                    },
                    "to": [
                        {
                            "shell_command": "osascript ~/mic.oascript"
                        }
                    ]
                }
            ]

mic.osascript

tell application "System Events" 
    keystroke "m" using {control down, command down}
end tell

on getMicrophoneVolume()
  input volume of (get volume settings)
end getMicrophoneVolume
on disableMicrophone()
  set volume input volume 0
end disableMicrophone
on enableMicrophone()
  set volume input volume 80
end enableMicrophone

if getMicrophoneVolume() is greater than 0 then
  disableMicrophone()
else
  enableMicrophone()
end if