unrar for transmission

#!/bin/sh

set -x

TR_DIR="${TR_TORRENT_DIR}"
TR_NAME="${TR_TORRENT_NAME}"

QPKG_DIR=`/sbin/getcfg QTransmission Install_Path -f /etc/config/qpkg.conf`
FIND_PATH="/usr/bin/find"
LOG_FILE_PATH="/home/osmc/.config/transmission-daemon/scripts/unpack.log"   #PATH to store the log file, blank to disable
UNRAR_TRIGGERS="x -y -o+ -idp" #triggers for unrar operation, use this to control the info logged (see unrar command manual)
UNZIP_TRIGGERS="-o" #same as unrar but for zip.
DECOMPRESS_TO_DIR="/media/USBDisk1/Torrent/Unpacked" #If blank will unpack in its own directory, else will unpack to a fixed directory
ACTION_TIME=$(date +%d-%m-%Y\ %H:%M:%S)

if [ -z $DECOMPRESS_TO_DIR ]; then
    DESTINATION_DIR="$TR_DIR/"
else
    DESTINATION_DIR="$DECOMPRESS_TO_DIR/$TR_NAME"
fi

    cd "$TR_DIR"
    if [ -d "$TR_NAME" ]; then
        cd "$TR_NAME"
        IFS=$'\n'
        unset RAR_FILES i
        FIND_RESULTS=`$FIND_PATH -maxdepth 3 -iname "*.rar"`
        for RAR_FILE in $FIND_RESULTS; do
            if [[ $RAR_FILE =~ .*part.*.rar ]]; then
                if [[ $RAR_FILE =~ .*part0*1.rar ]]; then
                    RAR_FILES[i++]=$RAR_FILE
                fi
            else
                RAR_FILES[i++]=$RAR_FILE
            fi
        done
        unset IFS
        unset FIND_RESULTS

        if [ ${#RAR_FILES} -gt 0 ]; then
        mkdir -p "$DESTINATION_DIR/"
        for RAR_FILE in "${RAR_FILES[@]}"; do
            /usr/bin/unrar $UNRAR_TRIGGERS "$RAR_FILE" "$DESTINATION_DIR/" >> $LOG_FILE_PATH
            if [ $? -gt 0 ]; then
                echo $ACTION_TIME "Error unrarring $TR_NAME torrent" >> $LOG_FILE_PATH
                exit 0
            else
                echo $ACTION_TIME "Unrarred $TR_NAME torrent" >> $LOG_FILE_PATH
            fi
        done
        fi

        IFS=$'\n'
        FIND_RESULTS=`$FIND_PATH -maxdepth 3 -iname "*.zip"`
        for ZIP_FILE in $FIND_RESULTS; do
            ZIP_FILES[i++]=$ZIP_FILE
        done
        if [ ${#ZIP_FILES} -gt 0 ]; then
            mkdir -p "$DESTINATION_DIR"
            for ZIP_FILE in "${ZIP_FILES[@]}"; do
                /opt/bin/unzip $UNZIP_TRIGGERS "$ZIP_FILE" -d "$DESTINATION_DIR/" >> $LOG_FILE_PATH
                if [ $? -gt 0 ]; then
                    echo $ACTION_TIME "Error unziping $TR_NAME torrent" >> $LOG_FILE_PATH
                    exit 0
                else
                    echo $ACTION_TIME "Unziped $TR_NAME torrent" >> $LOG_FILE_PATH
                fi
            done
        fi
        unset IFS

    #in case the torrent is a file
    else
        #special case when the torrent name contains the archive extension
        FILENAME=`/usr/bin/basename "$TR_NAME" .rar`

        if [ -f "$FILENAME.rar" ]; then
            echo "Special rar archive found ..."

            if [ -z "$DECOMPRESS_TO_DIR" ]; then
                DESTINATION_DIR="${TR_DIR}/$FILENAME"
            else
                DESTINATION_DIR="$DECOMPRESS_TO_DIR/$FILENAME"
            fi

            mkdir -p "$DESTINATION_DIR"

            /usr/bin/unrar $UNRAR_TRIGGERS "$FILENAME.rar" "$DESTINATION_DIR" >> $LOG_FILE_PATH
            if [ $? -gt 0 ]; then
                echo $ACTION_TIME "Error unrarring $TR_NAME torrent" >> $LOG_FILE_PATH
                exit 0
            else
                echo $ACTION_TIME "Unrarred $TR_NAME torrent" >> $LOG_FILE_PATH
            fi
        else
            if [ -f "$TR_NAME.rar" ]; then
                mkdir -p "$DESTINATION_DIR"
                /usr/bin/unrar $UNRAR_TRIGGERS "$TR_NAME.rar" "$DESTINATION_DIR" >> $LOG_FILE_PATH
                if [ $? -gt 0 ]; then
                    echo $ACTION_TIME "Error unrarring $TR_NAME torrent" >> $LOG_FILE_PATH
                    exit 0
                else
                    echo $ACTION_TIME "Unrarred $TR_NAME torrent" >> $LOG_FILE_PATH
                fi
            fi
        fi

        FILENAME=`/usr/bin/basename "$TR_NAME" .zip`

        if [ -f "$FILENAME.zip" ]; then
            echo "Special zip archive found ..."
            mkdir -p "$DESTINATION_DIR"
            /opt/bin/unzip $UNZIP_TRIGGERS "$FILENAME.zip" -d "$DESTINATION_DIR" \ >> $LOG_FILE_PATH
            if [ $? -gt 0 ]; then
                echo $ACTION_TIME "Error unzipping $TR_NAME torrent" >> $LOG_FILE_PATH
                exit 0
            else
                echo $ACTION_TIME "Unziped $TR_NAME torrent" >> $LOG_FILE_PATH
            fi
        else
            LIST_ZIP_FILE=`ls "$TR_NAME.zip" 2>/dev/null`
            if [ ! -z "$LIST_ZIP_FILE" ]; then
                mkdir -p "$DESTINATION_DIR"
                /opt/bin/unzip $UNZIP_TRIGGERS "$LIST_ZIP_FILE" -d "$DESTINATION_DIR" >> $LOG_FILE_PATH
                if [ $? -gt 0 ]; then
                    echo $ACTION_TIME "Error unzipping $TR_NAME torrent" >> $LOG_FILE_PATH
                    exit 0
                else
                    echo $ACTION_TIME "Unziped $TR_NAME torrent" >> $LOG_FILE_PATH
                fi
            fi
        fi
    fi