#!/bin/bash
# This shell script used to build yocto for igkbaord

BOARD=igkboard
VERSION=honister

PACKDIR=`pwd`/yocto_packets

WORKDIR=`pwd`/workspace-${VERSION}
YOCTO_SRC=imx-yocto-bsp
PRJ_PATH=${WORKDIR}/${YOCTO_SRC}

SRV_URL=http://weike-iot.com:2211/yocto/
YOCTO_TAR=${YOCTO_SRC}-${VERSION}.tar.xz

set -e

# display in red
function pr_error() {
    echo -e "\033[40;31m --E-- $1 \033[0m"
}

# display in yellow
function pr_warn() {
    echo -e "\033[40;33m --W-- $1 \033[0m"
}

# display in green
function pr_info() {
    echo -e "\033[40;32m --I-- $1 \033[0m"
}

# decompress a packet to destination path
function do_unpack() {
    tarball=$1
    dstpath=`pwd`

    if [[ $# == 2 ]] ; then
        dstpath=$2
    fi

    pr_info "decompress $tarball"

    case $tarball in
        *.tar.gz)
            tar -xzf $tarball -C $dstpath
            ;;

        *.tar.bz2)
            tar -xjf $tarball -C $dstpath
            ;;

        *.tar.xz)
            tar -xJf $tarball -C $dstpath
            ;;

        *.tar)
            tar -xf $tarball -C $dstpath
            ;;

        *.zip)
            unzip -qo $tarball -d $dstpath
            ;;

        *)
            pr_error "decompress Unsupport packet: $tarball"
            return 1;
            ;;
    esac
}

function do_fetch()
{
    if [ -d $YOCTO_SRC ] ; then
        pr_warn "$YOCTO_SRC fetched already."
        return 0;
    fi

    if [ ! -f tarballs/$YOCTO_TAR ] ; then
	mkdir -p tarballs/ && cd tarballs
	wget $SRV_URL/$YOCTO_TAR
    fi

    cd $WORKDIR
    do_unpack tarballs/$YOCTO_TAR

    cd ${PRJ_PATH}
}

function do_patch()
{
    if [ -d ${PRJ_PATH}/sources/meta-${BOARD} ] ; then
        pr_warn "$YOCTO_SRC patch already."
        return 0;
    fi

    cd ${PRJ_PATH}/sources
    cp -af ${WORKDIR}/../${VERSION}/meta-${BOARD} .

    sed -i "s|^DL_DIR.*|DL_DIR ?= \"${PACKDIR}\"|g"  meta-${BOARD}/conf/local.conf

    cd ${PRJ_PATH}
}

function do_build()
{
    TARGET=linuxsys-image

    pr_warn "Build ${YOCTO_SRC} for ${TARGET}."

    cd ${PRJ_PATH}

    if [ -f ${BOARD}/conf/local.conf ] ; then
        pr_info "$YOCTO_SRC source poky."
	source sources/poky/oe-init-build-env ${BOARD}
    else
        pr_info "$YOCTO_SRC source meta."
        MACHINE=${BOARD} source sources/meta-${BOARD}/tools/${BOARD}-setup.sh -b ${BOARD}
    fi

    bitbake linuxsys-image

    cd ${PRJ_PATH}
}


function do_install()
{
    pr_warn "List yocto build output images."

    cd $WORKDIR

    set -x
    ls $WORKDIR/imx-yocto-bsp/${BOARD}/tmp/deploy/images/igkboard/
    set +x
}

function do_clean()
{
    pr_warn "Clean ${YOCTO_SRC} source code"

    rm -rf $WORKDIR
}

function do_usage()
{
    echo ""
    echo "Usage:"
    echo "  $0 [-b] [-c] [-h]"
    echo "     -b: download and build $PRJ_NAME"
    echo "     -c: clean the source code"
    echo "     -h: show this help message"
    echo ""
    exit;
}

while getopts "bch" OPTNAME
do
    case "${OPTNAME}" in
        "b")
            break;
            ;;

        "c")
            do_clean
            exit;
            ;;

        "h")
            do_usage
            exit;
            ;;

        "*")
            do_usage
            exit;
            ;;
    esac
done

#defualt do build action

mkdir -p $WORKDIR
cd $WORKDIR

do_fetch
do_patch
do_build
do_install

exit;