#!/bin/sh
# ----------------------------------------------------------------------------
#  "THE BEER-WARE LICENSE" (Revision 42):
#  Hannes Hauswedell wrote this file. As long as you retain this notice you
#  can do whatever you want with this stuff. If we meet some day, and you think
#  this stuff is worth it, you can buy me a beer in return.
# ----------------------------------------------------------------------------

BASEDIR=/your/audio/dir/

IFS='
'

SOURCEDIRS_BEST='/FILES/_flac/
/FILES/_vorb/
/FILES/_other/'

SOURCEDIRS_SMALLEST='/FILES/_flac_vorb/
/FILES/_vorb/
/FILES/_other/'

SOURCEDIRS_VORB='/FILES/_flac_vorb/
/FILES/_vorb/'


TARGETDIRS='/LINKS/best/
/LINKS/smallest/
/LINKS/vorb/'


for TARGETDIR in $TARGETDIRS; do
    DIRS=""
    if [ "$TARGETDIR" = "/LINKS/best/" ]; then
        DIRS=$SOURCEDIRS_BEST;
    elif [ "$TARGETDIR" = "/LINKS/smallest/" ]; then
        DIRS=$SOURCEDIRS_SMALLEST;
    elif [ "$TARGETDIR" = "/LINKS/vorb/" ]; then
        DIRS=$SOURCEDIRS_VORB;
    fi

    for INFIX in $DIRS; do
        echo "Gathering and creating directories for "$TARGETDIR" from " $INFIX " ..."
        cd ${BASEDIR}${INFIX}
        for DIR in `find ./ -type d`; do
            mkdir -p ${BASEDIR}${TARGETDIR}${DIR}
        done

        echo "Creating symlinks for "$TARGETDIR" from " $INFIX " ..."
        cd ${BASEDIR}${INFIX}
        for FILE in `find ./ -type f`; do
            cd ${BASEDIR}${INFIX}
            if [ ! -L ${BASEDIR}${TARGETDIR}${FILE} ]; then
                cd `echo "../../"${TARGETDIR}${FILE} | \
                    awk -F / '{ print substr($0,0,length($0)-length($NF)-1) }'`
                    # strip filenamen from full path

                RELPATH=`echo "${FILE}" | awk -F / '{ ORS=""; 
                                        for (i=1; i < NF+1; ++i) 
                                            print "../";  }'`${INFIX}${FILE}
                ln -s ${RELPATH}
            fi
        done
    done
done



# TODO: cleanup dead links and remove empty directories. Should be easy.