#!/usr/bin/bash

offset=$(eww get scroll_offset_carousel)
total=$(eww get gallery_index | gojq 'length')

maxvalue=$(( "$total" * 3 - 5 ))

if [ "$1" == "up" ]; then
    eww update scroll_offset_carousel=$(( ("$offset" + "$maxvalue" - 1) % "$maxvalue" ))
else
    eww update scroll_offset_carousel=$(( ("$offset" + 1) % "$maxvalue" ))
fi