guetzling

#!/bin/bash
#Guetzling V 1.0.0
help() { echo -e "
$(basename $0), Version 1.0.0

Usage example: $(basename $0) -q 90 -j -f ~/photos/output

    -q <84-100>, Sets the Quality, Default is 95
    -j Recompress ONLY JPG (by default it will also recompress PNG)
    -p Recompress ONLY PNG (by default it will also recompress JPG)
    -k Keep the original PNG after conversion (by default it will not)
    -f <folder> Speficify a folder of images to recompress, including subfolders (right now it's $(pwd)) 
  " 1>&2; exit 1; }

#Set Quality level for JPG recompression
#Default = 95
#Max = 100
#Min = 84
QUALITY_JPG=95

#Set Quality level
#Default = 95
#Max = 100
#Min = 84
QUALITY_PNG=95

#Recompress JPG Images
#Set to false to disable
JPG=true

#Convert PNG Images
#Set to false to disable
#PNGS WILL BE DELETED AFTER CONVERSION UNLESS OTHERWISE SPECIFIED
PNG=true

#Remove original PNGS after conversion to JPG
PNG_DELETE=true

#Set the operating folder to pwd
FOLDER=$(pwd)

while getopts ":q:j:p:k:f:" o; do
    case "${o}" in
        q)
            q=${OPTARG}
            if ((q >= 84 || q <= 100))
            then
                QUALITY_JPG=${q}
                echo "QUALITY_JPG = ${QUALITY_JPG}"
            else
                help
            fi
            ;;
        j)
            j=${OPTARG}
            PNG=false
            echo "Recompressing JPG ONLY"
            ;;
        p)
            p=${OPTARG}
            JPG=false
            echo "Recompressing PNG ONLY"
            ;;
        k)
            k=${OPTARG}
            PNG_DELETE=false
            echo "Keeping PNG after compression"
            ;;
        f)
            f=${OPTARG}
            FOLDER=${f}
            echo "Working in folder ${f}, including subfolders"
            ;;
        *)
            help
            ;;
    esac
done
shift $((OPTIND-1))

#if [ -z "${q}" ] || [ -z "${j}" ]; then
#    help
#fi



IFS=$'\n';

if [ $JPG = true ];
    then
        for f in $(find "$FOLDER" -name '*.jpg')
        #for f in $1/*.jpg
        do
	        echo "Guetzling file - $f at level '$QUALITY_JPG'..."
	        guetzli --quality "$QUALITY_JPG" "$f" "$f"
	        echo "Done."
        done
fi

if [ $JPG = true ];
    then
        for f in $(find "$FOLDER" -name '*.jpeg')
        #for f in $1/*.jpeg
        do
            echo "Guetzling file - $f at level '$QUALITY_JPG'..."
            guetzli --quality "$QUALITY_JPG" "$f" "$f"
            echo "Done."
        done
fi

if [ $PNG = true ];
    then
        for f in $(find "$FOLDER" -name '*.png')
        #for f in $1/*.png
        do
	        echo "Guetzling file - $f at level '$QUALITY_PNG' ..."
	        guetzli --quality "$QUALITY_PNG" "$f" "${f%.png}.jpg"
            
            if [ $PNG_DELETE = true ];
                then
                    rm "$f"
            fi
	        
            echo "Done."
        done
fi