#!/bin/bash

# Did we get an image to convert?
if [[ ! -f "$1" ]]; then
	echo Usage:  $0 [gimpPic.xcf] {anythingToPreview}
	exit 1
fi

# Find information about the image
IMAGE=$(realpath "$1")
FILENAME=$(basename "${IMAGE}")
DIRNAME=$(dirname "${IMAGE}")
NAME=$(basename "$1" .xcf)

# Is it really an XCF?
file "${IMAGE}" | grep -q "GIMP XCF"
if [[ "$?" -ne "0" ]]; then
	echo ${FILENAME} is not a GIMP XCF image! >&2
	exit 1
fi

# Switch to folder where the image exists
pusd "${DIRNAME}" &> /dev/null

# Run our Script-Fu to convert each layer to a PNG
gimp -i -d -f -s -c -b "(script-fu-export-joeylib \"${IMAGE}\")" -b "(gimp-quit 0)" &> /dev/null

# Count the PNGs we found
COUNT=$(find . -maxdepth 1 -name "${FILENAME}-DoNtEvErDoThIs-*.png" -printf '.' | wc -m)

# Did nothing come back out?
if [[ "${COUNT}" -eq "0" ]]; then
	echo Unable to extract layers from ${FILENAME}! >&2
	exit 1
fi

# We only do the first two layers.  If there's more, warn them.
if [[ "${COUNT}" -gt "2" ]]; then
	echo ${COUNT} layers found.  Only the first two will be used.
fi

# If there's no data dir, make one and remove it later.
if [[ -d data ]]; then
	HASDATA=1
else
	HASDATA=0
	mkdir -p data
fi

# Call custom converter
${JOEY}/utils/imgconvert "${FILENAME}-DoNtEvErDoThIs-1.png" "${FILENAME}-DoNtEvErDoThIs-2.png" "${NAME}"
mv "data/${NAME}.sta" .

# Remove data folder if we created one
if [[ "${HASDATA}" -eq "0" ]]; then
	rm -rf data
fi

# Clean up temp PNG files
find . -maxdepth 1 -type f -name "${FILENAME}-DoNtEvErDoThIs-*.png" -exec rm -f {} \;

# Clean up JLSTATS
rm -f JLSTATS

# Back to our original directory
popd &> /dev/null