#!/bin/sh

[ $# != 1 ] && exit 1
ID=$1
egrep -x -q '^[-0-9A-Za-z]{36}$'<<<"$ID" || exit 2

systemd-nspawn \
    -D {{gerboweb_root}} \
    -x --bind={{gerboweb_cache}}/upload/$ID:/mnt \
    /bin/sh -c "set -euo pipefail
unzip -j -d /tmp/gerber /mnt/gerber.zip
rm -f /mnt/template_top.svg /mnt/template_bottom.svg /mnt/template_top.preview.png /mnt/template_bottom.preview.png
date; echo 'Rendering'
gerbolyze template --top /mnt/template_top.svg --bottom /mnt/template_bottom.svg /tmp/gerber
date; echo 'Scaling down'
convert /mnt/template_top.svg -resize 500x500 -negate -brightness-contrast 30x30 -colorspace gray /mnt/template_top.preview.png
convert /mnt/template_bottom.svg -resize 500x500 -negate -brightness-contrast 30x30 -colorspace gray /mnt/template_bottom.preview.png