#!/bin/sh
killall swaybg
PIDFILE="/tmp/randombg.pid"
# Check if the PID file exists and if the process is running
if [ -e "$PIDFILE" ] && kill -0 "$(bat "$PIDFILE")"; then
    echo "Another instance of the script is already running."
    kill -9 "$(bat $PIDFILE)"  # Forcefully kill the old process
fi
echo $$ > "$PIDFILE"

cleanup() {
    [ -n "$OLD_PID" ] && kill "$OLD_PID" 2>/dev/null
    rm -f "$PIDFILE"
    exit 0
}
trap cleanup INT TERM EXIT

sleep_interruptible() {
    t=$1
    while [ "$t" -gt 0 ]; do
        sleep 1 || return
        t=$((t-1))
    done
}

swaybg -i "$(fd . /mnt/ssd/papes -t f | shuf -n1)" -m fill &
OLD_PID=$!
while true; do
    sleep_interruptible 300
    swaybg -i "$(fd . /mnt/ssd/papes -t f | shuf -n1)" -m fill &
    NEXT_PID=$!
    sleep_interruptible 5
    kill $OLD_PID
    OLD_PID=$NEXT_PID
done