#!/bin/bash

# gmgsite compile script v2, merged with b-m-f's hugo-picture-optimization

MAXIMUM_JPG_SIZE=250
PNG_OPTIMIZATION_LEVEL=2

optimize_images () {

# OG by b-f-m on GitHub

if hash exiftool 2>/dev/null; then
	# remove exif data on all images in new_images
	exiftool -all= public/ -r -ext jpg -ext jpeg -ext png
else
	echo "Install perl-image-exiftool to optimize images"
fi

if hash jpegoptim 2>/dev/null; then
	for image in $(find public/ -regextype posix-extended -iregex ".*\.(jpeg|jpg)"); do
		# resize to width 1400 only if bigger than that
		mogrify -resize '1400>' $image
		# remove all metadata and try to optimize jpeg image to match the Maximum size defined above
		jpegoptim --strip-all --size=$MAXIMUM_JPG_SIZE $image
	done;
else
	echo "Install jpegoptim to optimize JPEG images"
fi

if hash optipng 2>/dev/null; then
	for image in $(find public/ -regextype posix-extended -iregex ".*\.(png)"); do
		# resize to width 1400 only if bigger than that
		mogrify -resize '1400>' $image
		# optimize PNG with a give level (higher = slower) and remove all metadata
		optipng -clobber -strip all -o $PNG_OPTIMIZATION_LEVEL $image
	done;
else
	echo "Install optipng to optimize PNG images"
fi

find -type f -name '*_original' -delete

}

case $1 in
    --no-clean-folder | -c)
        mkdir public; hugo && optimize_images;;

    --no-optimize-images | -i)
        if [[ -d "public" ]]; then
            rm -rf public/* && hugo
        else
            mkdir public && hugo
        fi;;

    --just-compile | -j)
        mkdir public; hugo;;

    *)
        if [[ -d "public" ]]; then
            rm -rf public/* && hugo && optimize_images
        else
            mkdir public && hugo && optimize_images
        fi;;
esac