#!/bin/bash

function CheckTool
{
        [  -n "$1"  ] ||
        {
                echo -e  "CheckTool 参数错误!!";
                return 255;
        };
        ToolPath=`which $1`;
        [ -e "$ToolPath" ] ||
        {
                 echo -e "$1 不存在，请先安装此工具!!!";
                 return 255;
        };
        return 0;
}

export HENVBOX_UNSUPPORTED=0
CheckTool uname
[ $? -eq 0 ] || export HENVBOX_UNSUPPORTED=1
CheckTool find
[ $? -eq 0 ] || export HENVBOX_UNSUPPORTED=1
CheckTool dirname
[ $? -eq 0 ] || export HENVBOX_UNSUPPORTED=1
CheckTool readlink
[ $? -eq 0 ] || export HENVBOX_UNSUPPORTED=1
CheckTool ln
[ $? -eq 0 ] || export HENVBOX_UNSUPPORTED=1
CheckTool sed
[ $? -eq 0 ] || export HENVBOX_UNSUPPORTED=1
CheckTool awk
[ $? -eq 0 ] || export HENVBOX_UNSUPPORTED=1
CheckTool grep
[ $? -eq 0 ] || export HENVBOX_UNSUPPORTED=1
CheckTool id
[ $? -eq 0 ] || export HENVBOX_UNSUPPORTED=1
CheckTool mkdir
[ $? -eq 0 ] || export HENVBOX_UNSUPPORTED=1
CheckTool sudo
[ $? -eq 0 ] || [ `id -u` -eq 0 ] ||  export HENVBOX_UNSUPPORTED=1

if [ ${HENVBOX_UNSUPPORTED} -ne 1 ]
then
        # shellcheck disable=SC2128  # ignore array expansion warning
        if [ -n "${BASH_SOURCE-}" ]
        then
        self_path="${BASH_SOURCE}"
        elif [ -n "${ZSH_VERSION-}" ]
        then
        self_path="${(%):-%x}"
        else
                return 1
        fi

        # shellcheck disable=SC2169,SC2169,SC2039  # unreachable with 'dash'
        if [[ "$OSTYPE" == "darwin"* ]]; then
        # convert possibly relative path to absolute
        script_dir="$(realpath_int "${self_path}")"
        # resolve any ../ references to make the path shorter
        script_dir="$(cd "${script_dir}" || exit 1; pwd)"
        else
        # convert to full path and get the directory name of that
        script_name="$(readlink -f "${self_path}")"
        script_dir="$(dirname "${script_name}")"
        fi

        #导出根路径
        export HENVBOX_ROOT_PATH="${script_dir}";

        #导入配置脚本
        if [ -x "${HENVBOX_ROOT_PATH}/config.sh" ]
        then
                . "${HENVBOX_ROOT_PATH}/config.sh"
        fi

        #修改bashrc
        BASHRC_PATH=~/.bashrc
        BASHRC_ENV_BLOCK_BEGIN=`cat ${BASHRC_PATH} | grep -n "^#HEnvBox Block BEGIN$" | awk -F: '{print $1}'`
        BASHRC_ENV_BLOCK_END=`cat ${BASHRC_PATH} | grep -n "^#HEnvBox Block END$"| awk -F: '{print $1}'`
        if [ -n "${BASHRC_ENV_BLOCK_BEGIN}" ]
        then
                if [ -n "${BASHRC_ENV_BLOCK_BEGIN}" ]
        	then
			sed -i  "${BASHRC_ENV_BLOCK_BEGIN},${BASHRC_ENV_BLOCK_END}d" ${BASHRC_PATH}
		fi
        fi
else
        echo 无法完成HEnvBox配置!
fi