#! /bin/bash
set -ueo pipefail

INKSCAPE="$(which inkscape)"
OPTIPNG="$(which optipng)"

if [[ "$1" == "dark" ]]; then
	SRC_FILE="assets-dark.svg"
	ASSETS_DIR="assets-dark"
else
	SRC_FILE="assets.svg"
	ASSETS_DIR="assets"
fi

i="$2"

GTK2_HIDPI=$(echo "${GTK2_HIDPI-False}" | tr '[:upper:]' '[:lower:]')
if [[ "${GTK2_HIDPI}" == "true" ]] ; then
	EXTRA_OPTIONS=("--export-dpi=192")
else
	EXTRA_OPTIONS=()
fi

if [ -f "$ASSETS_DIR/$i.png" ]; then
    echo "$ASSETS_DIR/$i.png" exists.
else
    echo Rendering "$ASSETS_DIR/$i.png"
    "$INKSCAPE" --export-id="$i" \
              --export-id-only \
              --export-background-opacity=0 \
              ${EXTRA_OPTIONS+"${EXTRA_OPTIONS[@]}"} \
              --export-png="$ASSETS_DIR/$i.png" "$SRC_FILE" >/dev/null \
    && "$OPTIPNG" -o7 --quiet "$ASSETS_DIR/$i.png"
fi

exit 0