#!/bin/bash
#
# prepare chroot environment for asterisk from spblinux
#

set -e -x

TARGET_DIR=./fbox_extension

function fetch_if_missing() {
    FILE=$1
    SOURCE_URL=$2

    if [ ! -e ${FILE} ]; then
        echo "Missing $FILE. Trying to download one.";
        if wget "${SOURCE_URL}"; then
            echo "Success"
        else
            echo "Failed to fetch ${BASE_SERVER}/${UNSQUASH}"
            exit 1
	fi
    fi
}

BASE_SERVER="http://www.spblinux.de/fbox"
if [ -z "$1" ]; then
    EXT_SERVER=${BASE_SERVER}
else
    if echo $1 | grep -q http; then
       EXT_SERVER=$1
       shift
    fi
fi

UNSQUASH=unsquashfs-lzma.x86
if [ ! -x ${UNSQUASH} ]; then
    echo "No appropriate unsquash (${UNSQUASH}) found."
    fetch_if_missing ${UNSQUASH} "${BASE_SERVER}/${UNSQUASH}";
    chmod a+x ${UNSQUASH}
fi

IMAGE=$1
fetch_if_missing $IMAGE "${EXT_SERVER}/26/${IMAGE}";

TMPDIR=./tmp
rm -rf $TMPDIR
./${UNSQUASH} -dest $TMPDIR $IMAGE
cp -Rav $TMPDIR/* $TARGET_DIR/
rm -rf $TMPDIR