#!/usr/bin/env bash
#
# Plays a sound.
#
# Options (set on the effect in rules.json):
#   file       path to a sound file; default is the freedesktop "new message" chime
#   intensity  volume, 0.0 .. 1.0, default 1 (`volume` works too)
#   speed      how many times to play it, default 1 (`repeat` works too)
set -uo pipefail

file=${AR_OPT_FILE:-/usr/share/sounds/freedesktop/stereo/message-new-instant.oga}
volume=${AR_OPT_INTENSITY:-${AR_OPT_VOLUME:-1}}
times=${AR_OPT_SPEED:-${AR_OPT_REPEAT:-1}}
[[ $volume =~ ^[0-9]*\.?[0-9]+$ ]] || volume=1
[[ $times =~ ^[0-9]+$ ]] || times=1
(( times > 50 )) && times=50
file=${file/#\~/$HOME}

[[ -r $file ]] || { echo "sound: cannot read $file" >&2; exit 1; }

play() {
  if command -v pw-play >/dev/null 2>&1; then
    pw-play --volume="$volume" "$file"
  elif command -v paplay >/dev/null 2>&1; then
    paplay "$file"
  elif command -v mpv >/dev/null 2>&1; then
    mpv --no-video --really-quiet --volume="$(awk -v v="$volume" 'BEGIN { printf "%d", v * 100 }')" "$file"
  else
    echo "sound: no player found (pw-play, paplay or mpv)" >&2
    return 1
  fi
}

for ((i = 0; i < times; i++)); do
  play || exit 1
done