#!/usr/bin/env bash

normal=$(find ~/.config/wallpaper-chooser/current -type f | head -n 1)
blurred=$(find ~/.local/share/swaybg -type f | head -n 1)

[ -n "$normal" ] || exit 1
[ -n "$blurred" ] || exit 1

while true; do
    last=$target

    mapfile -t focused_lines < <(niri msg focused-window 2>/dev/null)

    if [ "${#focused_lines[@]}" -gt 1 ]; then
        target="$blurred"
    else
        target="$normal"
    fi

    [ "$target" = "$last" ] || swww img "$target" --transition-type fade --transition-duration 0.5 > /dev/null 2> /dev/null

    sleep 0.5
done