#!/bin/bash

# Exit silently if Do Not Disturb is enabled
if [ $(swaync-client --get-dnd) == "true" ]; then
    echo "Do Not Disturb is on, skipping sound"
    exit 0
fi

LOCKFILE="/tmp/swaync-sound-lock-$UID"
# Open file descriptor 200 for locking
exec 200>"$LOCKFILE"

# Try to acquire an exclusive lock without waiting (non-blocking)
if ! flock -x -n 200; then
    # Another sound is playing or in cooldown – ignore this notification
    exit 0
fi

# Lock acquired: set a trap to release it on exit
trap 'flock -u 200' EXIT

SOUND_LOW_DIR="$HOME/.config/swaync/scripts/sounds/low"
SOUND_NORMAL_DIR="$HOME/.config/swaync/scripts/sounds/normal"
SOUND_CRITICAL_DIR="$HOME/.config/swaync/scripts/sounds/critical"

case $1 in
    low)
        DIR=$SOUND_LOW_DIR
        ;;
    normal)
        DIR=$SOUND_NORMAL_DIR
        ;;
    critical)
        DIR=$SOUND_CRITICAL_DIR
        ;;
    *)
        echo "Unknown urgency level '$1'"
        exit 1
        ;;
esac

shopt -s nullglob

SOUND_FILES=()
for ext in wav mp3 ogg flac; do
    SOUND_FILES+=("$DIR"/*."$ext")
done

if [ ${#SOUND_FILES[@]} -eq 0 ]; then
    echo "No sound files found in $DIR"
    exit 0
fi

RANDOM_INDEX=$((RANDOM % ${#SOUND_FILES[@]}))
RANDOM_SOUND="${SOUND_FILES[$RANDOM_INDEX]}"

play -v 0.5 "$RANDOM_SOUND" 2>/dev/null & disown;

# Enforce a 1‑second cooldown before the next sound can start
sleep 1

# Lock released automatically by the trap