#!/bin/bash

CROSSTOOL=
INST_PATH=`pwd`/install

LYFTP_SRC=ftp://master.iot-yun.club/src/

export CFLAGS=
export LDFLAGS=


function msg_banner()
{ 
	echo "" 
	echo "+-----------------------------------------------------------------------" 
	echo "|  $1 " 
	echo "+-----------------------------------------------------------------------"
    echo ""
}

function check_result()
{
       	if [ $? != 0 ] ; then
	       	echo ""
	       	echo "+-----------------------------------------------------------------------"
	       	echo "|  $1 "
	       	echo "+-----------------------------------------------------------------------"
	       	echo ""
	       	exit ;
       	fi
}


function export_cross()
{
    msg_banner "export cross compiler tools"

    # export cross toolchain
    export CC=${CROSSTOOL}gcc
    export AS=${CROSSTOOL}as
    export AR=${CROSSTOOL}ar
    export LD=${CROSSTOOL}ld
    export NM=${CROSSTOOL}nm
    export RANLIB=${CROSSTOOL}ranlib
    export OBJDUMP=${CROSSTOOL}objdump
    export STRIP=${CROSSTOOL}strip

    # export cross configure 
    export CONFIG_CROSS=" --build=i686-pc-linux --host=arm-linux "

    # Clear LDFLAGS and CFLAGS 
    export LDFLAGS= 
    export CFLAGS= 
}

function compile_libgpiod()
{
	PREFIX_PATH=${INST_PATH}
	SRC_NAME=libgpiod-1.6.3
	PACK_SUFIX=tar.gz
	IMG_NAME=libgpiod.so

	if [ -f ${PREFIX_PATH}/lib/${IMG_NAME} ] ; then
		msg_banner "$SRC_NAME already compile and installed"
		return 0;
	fi

	msg_banner "Start compile $SRC_NAME "

	if [ ! -f ${SRC_NAME}.${PACK_SUFIX} ] ; then
		#wget https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/snapshot/$SRC_NAME.$PACK_SUFIX
		wget $LYFTP_SRC/$SRC_NAME.$PACK_SUFIX 
		check_result "ERROR: download ${SRC_NAME} failure"
	fi

	tar -xzf ${SRC_NAME}.${PACK_SUFIX}

	cd ${SRC_NAME}

	./autogen.sh

    echo "ac_cv_func_malloc_0_nonnull=yes" >arm-linux.cache
	./configure --enable-tools=yes --prefix=${PREFIX_PATH} ${CONFIG_CROSS} --cache-file=arm-linux.cache
	make && make install

	cd -
}

function compile_cJson()
{
	PREFIX_PATH=${INST_PATH}
	SRC_NAME=cJSON-1.7.14
	PACK_SUFIX=tar.gz
	IMG_NAME=libcjson.so

	if [ -f ${PREFIX_PATH}/lib/${IMG_NAME} ] ; then
		msg_banner "$SRC_NAME already compile and installed"
		return 0;
	fi

	msg_banner "Start compile $SRC_NAME "

	if [ ! -f ${SRC_NAME}.${PACK_SUFIX} ] ; then
		# official site: https://github.com/DaveGamble/cJSON
		wget $LYFTP_SRC/$SRC_NAME.$PACK_SUFIX 
		check_result "ERROR: download ${SRC_NAME} failure"
	fi


	tar -xzf ${SRC_NAME}.${PACK_SUFIX}

	cd ${SRC_NAME}

    sed -i -e "s|^CC =.*|CC = ${CC} -std=c89|g" Makefile

	make && make PREFIX=$PREFIX_PATH install
	cd -
}


function compile_mosquitto()
{
	PREFIX_PATH=${INST_PATH}
	SRC_NAME=mosquitto-2.0.10
	PACK_SUFIX=tar.gz
	IMG_NAME=libmosquitto.so

	if [ -f ${PREFIX_PATH}/lib/${IMG_NAME} ] ; then
		msg_banner "$SRC_NAME already compile and installed"
		return 0;
	fi

	# mosquitto depends on openssl 
    if [ ! -n "${CROSSTOOL}" ] ; then
	   msg_banner "Using apt install openssl library now..."
	   sudo apt install -y libssl-dev
    fi


	msg_banner "Start compile $SRC_NAME "
	if [ ! -f ${SRC_NAME}.${PACK_SUFIX} ] ; then
		wget $LYFTP_SRC/$SRC_NAME.$PACK_SUFIX 
		#wget https://mosquitto.org/files/source/$SRC_NAME.$PACK_SUFIX 
		check_result "ERROR: download ${SRC_NAME} failure"
	fi


	tar -xzf ${SRC_NAME}.${PACK_SUFIX}

	cd ${SRC_NAME}

    export CFLAGS=-I${PREFIX_PATH}/include
    export LDFLAGS=-L${PREFIX_PATH}/lib

	make  LDFLAGS=${LDFLAGS} && make DESTDIR=${PREFIX_PATH} prefix=/ install

	cd -
}


if [[ $# == 1 ]] && [[ $1 == clean ]] ; then
    rm -rf install
    rm -rf libgpiod-1.6.3
    rm -rf cJSON-1.7.14
    rm -rf mosquitto-2.0.10
    exit 0;
fi


if [ -n "${CROSSTOOL}" ] ; then
    export_cross
fi

compile_libgpiod

compile_cJson

compile_mosquitto