#!/bin/sh

set -e

sizes=(640 320 160 80)
presizes=(120 60 30)

rm samples.csv

echo "Getting file dimensions..."
for f in sample/*unsplash.jpg; do
	gm identify -format %f,%w,%h $f >> samples.csv
done

for size in ${presizes[*]}; do
	for f in sample/*unsplash.jpg; do
		echo "Compressing thumbnail $f at $size"
		if [ -f "${f%.jpg}_pre$size.jpg" ]; then
			continue
		fi
		gm convert $f -resize x$size -compress jpeg -quality 40 ${f%.jpg}_pre$size.jpg
		gm convert $f -resize x$size -compress webp -quality 35 ${f%.jpg}_pre$size.webp
	done
done
for size in ${sizes[*]}; do
	for f in sample/*unsplash.jpg; do
		echo "Compressing $f at $size"
		if [ -f "${f%.jpg}_$size.jpg" ]; then
			continue
		fi
		gm convert $f -resize x$size -compress jpeg -quality 75 ${f%.jpg}_$size.jpg
		gm convert $f -resize x$size -compress webp -quality 70 ${f%.jpg}_$size.webp
	done
done