#!/bin/sh
CWD=$(pwd)
KERNEL_VAR_FILE=${CWD}/kernel-vars

if ! dpkg-architecture -iamd64; then
    echo "Intel-QAT is only buildable on amd64 platforms"
    exit 0
fi

if [ ! -f ${KERNEL_VAR_FILE} ]; then
    echo "Kernel variable file '${KERNEL_VAR_FILE}' does not exist, run ./build_kernel.sh first"
    exit 1
fi

. ${KERNEL_VAR_FILE}

declare -a intel=(
    "https://downloadmirror.intel.com/30178/eng/QAT1.7.L.4.13.0-00009.tar.gz"
)

for url in "${intel[@]}"
do
    cd ${CWD}

    DRIVER_FILE=$(basename ${url} | sed -e s/tar_0/tar/)
    DRIVER_DIR="${DRIVER_FILE%.tar.gz}"
    DRIVER_NAME="QAT"
    DRIVER_VERSION=$(echo ${DRIVER_DIR} | awk -F${DRIVER_NAME} '{print $2}')
    DRIVER_VERSION_EXTRA="-0"

    # Build up Debian related variables required for packaging
    DEBIAN_ARCH=$(dpkg --print-architecture)
    DEBIAN_DIR="${CWD}/vyos-intel-${DRIVER_NAME}_${DRIVER_VERSION}${DRIVER_VERSION_EXTRA}_${DEBIAN_ARCH}"
    DEBIAN_CONTROL="${DEBIAN_DIR}/DEBIAN/control"
    DEBIAN_POSTINST="${CWD}/vyos-intel-qat.postinst"

    # Fetch Intel driver source from SourceForge
    if [ -e ${DRIVER_FILE} ]; then
        rm -f ${DRIVER_FILE}
    fi
    curl -L -o ${DRIVER_FILE} ${url}
    if [ "$?" -ne "0" ]; then
        exit 1
    fi

    # Unpack archive
    if [ -d ${DRIVER_DIR} ]; then
        rm -rf ${DRIVER_DIR}
    fi
    mkdir -p ${DRIVER_DIR}
    tar -C ${DRIVER_DIR} -xf ${DRIVER_FILE}

    cd ${DRIVER_DIR}
    if [ -z $KERNEL_DIR ]; then
        echo "KERNEL_DIR not defined"
        exit 1
    fi

    echo "I: Compile Kernel module for Intel ${DRIVER_NAME} driver"
    mkdir -p \
        ${DEBIAN_DIR}/lib/firmware \
        ${DEBIAN_DIR}/usr/sbin \
        ${DEBIAN_DIR}/usr/lib/x86_64-linux-gnu \
        ${DEBIAN_DIR}/etc/init.d
    KERNEL_SOURCE_ROOT=${KERNEL_DIR} ./configure --enable-kapi --enable-qat-lkcf
    make -j $(getconf _NPROCESSORS_ONLN) all
    make INSTALL_MOD_PATH=${DEBIAN_DIR} INSTALL_FW_PATH=${DEBIAN_DIR} \
        qat-driver-install adf-ctl-all

    if [ "x$?" != "x0" ]; then
        exit 1
    fi

    cp quickassist/qat/fw/*.bin ${DEBIAN_DIR}/lib/firmware
    cp build/*.so ${DEBIAN_DIR}/usr/lib/x86_64-linux-gnu
    cp build/adf_ctl ${DEBIAN_DIR}/usr/sbin
    cp quickassist/build_system/build_files/qat_service ${DEBIAN_DIR}/etc/init.d
    cp build/usdm_drv.ko ${DEBIAN_DIR}/lib/modules/${KERNEL_VERSION}${KERNEL_SUFFIX}/updates/drivers
    chmod 644 ${DEBIAN_DIR}/lib/firmware/*
    chmod 755 ${DEBIAN_DIR}/etc/init.d/* ${DEBIAN_DIR}/usr/local/bin/*

    if [ -f ${DEBIAN_DIR}.deb ]; then
        rm ${DEBIAN_DIR}.deb
    fi

    # build Debian package
    echo "I: Building Debian package vyos-intel-${DRIVER_NAME}"
    cd ${CWD}

    # delete non required files which are also present in the kernel package
    # und thus lead to duplicated files
    find ${DEBIAN_DIR} -name "modules.*" | xargs rm -f

    echo "#!/bin/sh" > ${DEBIAN_POSTINST}
    echo "/sbin/depmod -a ${KERNEL_VERSION}${KERNEL_SUFFIX}" >> ${DEBIAN_POSTINST}

    fpm --input-type dir --output-type deb --name vyos-intel-${DRIVER_NAME} \
        --version ${DRIVER_VERSION}${DRIVER_VERSION_EXTRA} --deb-compression gz \
        --maintainer "VyOS Package Maintainers <maintainers@vyos.net>" \
        --description "Vendor based driver for Intel ${DRIVER_NAME}" \
        --depends linux-image-${KERNEL_VERSION}${KERNEL_SUFFIX} \
        --license "GPL2" -C ${DEBIAN_DIR} --after-install ${DEBIAN_POSTINST}

    echo "I: Cleanup ${DRIVER_NAME} source"
    cd ${CWD}
    if [ -e ${DRIVER_FILE} ]; then
        rm -f ${DRIVER_FILE}
    fi
    if [ -d ${DRIVER_DIR} ]; then
        rm -rf ${DRIVER_DIR}
    fi
    if [ -d ${DEBIAN_DIR} ]; then
        rm -rf ${DEBIAN_DIR}
    fi
done