#!/usr/bin/sh
# @author nate zhou
# @since 2025,2026
# @depends pipewire-pulse wmenu dmenu(xorg) fzf
# speaker uses a dynamic menu or fzf to:
#   1. select the pipewire default sink
#   2. toggle mpd output device
# This script use pactl instead of wpctl, because device name listed in pactl
# is much easier to pipe to a dynamic menu than `wpctl status`

DAMBLOCKS="${XDG_RUNTIME_DIR}/damblocks.pid"

if [ "$XDG_SESSION_TYPE" = "wayland" ]; then
    menu="${HOME}/.local/bin/wmenu-color"
elif [ -n "$XAUTHORITY" ]; then
    menu="dmenu"
fi

usage() {
    cat <<_EOF_
USAGE
        $(basename "$0") [OPTION]
        Without any options, select the pipewire default sink
OPTIONS
        -h,--help       print this help info
        -m--mpd         toggle a mpd output
_EOF_
    exit 0
}

notify() {
    [ "$XDG_SESSION_TYPE" != "tty" ] \
        && notify-send -u low -r 1259 "$(basename "$0")" "$device"
}

chooser() {
    if [ "$XDG_SESSION_TYPE" != "tty" ]; then
        $speaker_command | awk '{print $2}' \
                               | $menu -p 'speaker' -l 3
    else
        $speaker_command | awk '{print $2}' \
                               | command fzf --prompt 'speaker '
    fi
}

refreshVolume() {
    kill -36 "$(cat "$DAMBLOCKS")"
}


setPipewire() {
    speaker_command="pactl list short sinks"

    device="$(chooser)"
    [ -z "$device" ] && exit 0

    pactl set-default-sink "$device" && refreshVolume && notify
}

setMPD() {
    speaker_command="mpc outputs"

    device="$(chooser)"
    [ -z "$device" ] && exit 0

    mpc toggleoutput "$device" && notify
}

[ -z "$1" ] && setPipewire

while [ -n "$1" ]; do
    case "$1" in
        -m|--mpd) setMPD ;;
        *) usage ;;
    esac
    shift
done