#!/bin/bash

thumbnailsconf=${1:-${0##*/}.conf}

test -r "$thumbnailsconf" || exit 1

function set_imgsize () {

    imgsize[${#imgsize[@]}]=$1

    imgsize[${#imgsize[@]}]=$2

    imgsize[${#imgsize[@]}]=$3

}

#set_imgsize 'custom' 1656 1242

set_imgsize 'xxlarge' 1224 918

set_imgsize 'xlarge' 1008 756

set_imgsize 'large' 792 594

set_imgsize 'medium' 576 432

set_imgsize 'small' 432 324

set_imgsize 'xsmall' 240 240

set_imgsize '2small' 144 144

set_imgsize 'thumb' 120 120

if which readconf > /dev/null; then

    eval $(readconf --conf "$thumbnailsconf" -s mysql -s galeries -s path --case-sensitive --array=galerie)

else

    echo readconf needed !

    echo PATH = $PATH

    echo get readconf at https://sebmarque.hd.free.fr/git/seb/scripts/raw/master/readconf

    exit 1

fi

if ! which convert > /dev/null; then

    echo please install ImageMagick

    exit 1

fi

for ((g=0; g<${#galerie[@]}; g++)); do

    sqlcmd="select concat('file=', path, ';rotation=', rotation * 90) from piwigo_images \

               where id in ( \

                  select image_id from piwigo_image_category \

                      where category_id in ( \

                          select id from piwigo_categories where name = '${galerie[$g]}' \

                      ) \

               )"

    for image in $(mysql -N -u $dbuser -p${dbpasswd} $dbname <<< $sqlcmd); do

        eval "$image"

        format=""

        fnNoExt="${file%.*}"

        fnExt="${file##*.}"

        fnPath="${file%/*}"

        mkdir -p $destDir/$fnPath

        cmd="nice -n20 convert $site/$file -write mpr:image +delete "

        for ((i=0; i<${#imgsize[@]}; i+=3)); do

            if ! test -e ${destDir}/${fnNoExt}-${imgsize[i]:0:2}.$fnExt; then

                format+="${imgsize[i]} "

                cmd+="mpr:image -filter Lanczos -strip -quality 95 -interlace line -sampling-factor 4:2:2 "

                if test $rotation -ne 0; then

                    cmd+="-rotate -$rotation -orient top-left "

                fi

                cmd+="-resize ${imgsize[i+1]}x${imgsize[i+2]} -write ${destDir}/${fnNoExt}-${imgsize[i]:0:2}.$fnExt +delete "

            fi

        done

        cmd=$(sed 's/\s*+delete\s*$//' <<< $cmd)

        if test -n "$format"; then

            echo "$site/$file : $format"

            eval "$(echo -e $cmd)"

            echo done

            sleep 30

        fi

    done

done