#!/usr/bin/env fish
argparse h/help -- $argv
if set -q _flag_h
    echo "Cycle between pactl sinks specified as arguments."
    return 0
end

set -l sinks alsa_output.usb-FIIO_FiiO_USB_DAC-E10-01.analog-stereo alsa_output.usb-Burr-Brown_from_TI_USB_Audio_DAC-00.analog-stereo
if test (count $argv) -ne 0
    set sinks $argv
end
set -l current (pactl get-default-sink)

set -l idx 0
for i in $sinks
    if test "$i" = "$current"
        break
    end
    set idx (math $idx + 1)
end

set -l next_idx (math "($idx + 1)" % (count $sinks))
pactl set-default-sink $sinks[(math $next_idx + 1)]