#!/bin/bash

PATH_ROOT=$(cd "$(dirname "$0")"; pwd)

function on_error()
{
	echo -e "\033[01m\033[31m"
	echo "==================[ !! ERROR !! ]=================="
	echo ""
	echo -e $1
	echo ""
	echo "==================================================="
	echo -e "\033[0m"
	exit 1
}

function build_linux
{
	if [ `id -u` -eq 0 ]; then
		on_error "Do not build as root."
	fi

	if [ ! -f "/etc/centos-release" ] ; then
		on_error "Sorry, build script works on CentOS 7 only."
	fi

	X=$(yum list installed | grep "libffi-devel")
	if [ "$X-x" = "-x" ] ; then
		on_error "Need libffi-devel to build Python, try:\r\n    sudo yum install libffi-devel"
	fi

	X=$(yum list installed | grep "zlib-devel")
	if [ "$X-x" = "-x" ] ; then
		on_error "Need zlib-devel to build Python, try:\r\n    sudo yum install zlib-devel"
	fi

	PYEXEC=${PATH_ROOT}/external/linux/release/bin/python3.7
	PYSTATIC=${PATH_ROOT}/external/linux/release/lib/libpython3.7m.a

	if [ ! -f "${PYSTATIC}" ] ; then
		echo "python static not found, now build it..."
		"${PATH_ROOT}/build/build-py-static.sh"

		if [ ! -f "${PYSTATIC}" ] ; then
			on_error "can not build python static."
		fi
	fi


	${PYEXEC} -B "${PATH_ROOT}/build/build.py" $@
}

function build_macos
{
	python3 -B "${PATH_ROOT}/build/build.py" $@
}

SYSTEM=`uname -s`
if [ $SYSTEM = "Linux" ] ; then
	build_linux
elif [ $SYSTEM = "Darwin" ] ; then   
	build_macos
else 
	echo "Unsupported platform."
fi