Hammerspoon switch audio output devices

switch-audio-device.lua

local function switchToDevice(deviceUid, alertIcon, alertMessage)
  local device = hs.fnutils.find(hs.audiodevice.allOutputDevices(), function(_device)
    return string.match(_device:uid(), deviceUid)
  end)

  if not device then
    hs.alert.show(alertIcon .. " " .. deviceUid .. " not found")
    return
  end

  local success, errMsg = pcall(device.setDefaultOutputDevice, device)
  if success then
    hs.alert.show(alertIcon .. " " .. alertMessage)
  else
    hs.alert.show("Error setting " .. device:name() .. " as default device: " .. errMsg)
  end
end

hs.hotkey.bind({}, "F12", function()
  switchToDevice("G635 Gaming Headset", "🎧", "Headphones")
end)

hs.hotkey.bind({}, "F13", function()
  switchToDevice("BuiltInSpeakerDevice", "🔊", "Speakers")
end)