#!/usr/bin/env bash

red='\033[0;31m'
green='\033[0;32m'
yellow='\033[0;33m'
plain='\033[0m'

cur_dir=$(pwd)

# check root
[[ $EUID -ne 0 ]] && echo -e "${red}错误：${plain} 必须使用root用户运行此脚本！\n" && exit 1

# check os
if [[ -f /etc/redhat-release ]]; then
    release="centos"
elif cat /etc/issue | grep -Eqi "debian"; then
    release="debian"
elif cat /etc/issue | grep -Eqi "ubuntu"; then
    release="ubuntu"
elif cat /etc/issue | grep -Eqi "centos|red hat|redhat"; then
    release="centos"
elif cat /proc/version | grep -Eqi "debian"; then
    release="debian"
elif cat /proc/version | grep -Eqi "ubuntu"; then
    release="ubuntu"
elif cat /proc/version | grep -Eqi "centos|red hat|redhat"; then
    release="centos"
else
    echo -e "${red}未检测到系统版本，请联系脚本作者！${plain}\n" && exit 1
fi

arch=$(arch)

if [[ $arch == "x86_64" || $arch == "x64" || $arch == "s390x" || $arch == "amd64" ]]; then
    arch="amd64"
elif [[ $arch == "aarch64" || $arch == "arm64" ]]; then
    arch="arm64"
else
    arch="amd64"
    echo -e "${red}检测架构失败，使用默认架构: ${arch}${plain}"
fi

echo "架构: ${arch}"

if [ $(getconf WORD_BIT) != '32' ] && [ $(getconf LONG_BIT) != '64' ]; then
    echo "本软件不支持 32 位系统(x86)，请使用 64 位系统(x86_64)，如果检测有误，请联系作者"
    exit -1
fi

os_version=""

# os version
if [[ -f /etc/os-release ]]; then
    os_version=$(awk -F'[= ."]' '/VERSION_ID/{print $3}' /etc/os-release)
fi
if [[ -z "$os_version" && -f /etc/lsb-release ]]; then
    os_version=$(awk -F'[= ."]+' '/DISTRIB_RELEASE/{print $2}' /etc/lsb-release)
fi

if [[ x"${release}" == x"centos" ]]; then
    if [[ ${os_version} -le 6 ]]; then
        echo -e "${red}请使用 CentOS 7 或更高版本的系统！${plain}\n" && exit 1
    fi
elif [[ x"${release}" == x"ubuntu" ]]; then
    if [[ ${os_version} -lt 16 ]]; then
        echo -e "${red}请使用 Ubuntu 16 或更高版本的系统！${plain}\n" && exit 1
    fi
elif [[ x"${release}" == x"debian" ]]; then
    if [[ ${os_version} -lt 8 ]]; then
        echo -e "${red}请使用 Debian 8 或更高版本的系统！${plain}\n" && exit 1
    fi
fi

install_base() {
    if [[ x"${release}" == x"centos" ]]; then
        yum install wget curl tar jq -y
    else
        apt install wget curl tar jq -y
    fi
}

#This function will be called when user installed x-ui out of sercurity
config_after_install() {
    echo -e "${yellow}出于安全考虑，安装/更新完成后需要强制修改端口与账户密码${plain}"
    read -p "确认是否继续,如选择n则跳过本次端口与账户密码设定[y/n]": config_confirm
    if [[ x"${config_confirm}" == x"y" || x"${config_confirm}" == x"Y" ]]; then
        read -p "请设置您的账户名:" config_account
        echo -e "${yellow}您的账户名将设定为:${config_account}${plain}"
        read -p "请设置您的账户密码:" config_password
        echo -e "${yellow}您的账户密码将设定为:${config_password}${plain}"
        read -p "请设置面板访问端口:" config_port
        echo -e "${yellow}您的面板访问端口将设定为:${config_port}${plain}"
        echo -e "${yellow}确认设定,设定中${plain}"
        /usr/local/x-ui/x-ui setting -username ${config_account} -password ${config_password}
        echo -e "${yellow}账户密码设定完成${plain}"
        /usr/local/x-ui/x-ui setting -port ${config_port}
        echo -e "${yellow}面板端口设定完成${plain}"
    else
        echo -e "${red}已取消设定...${plain}"
        if [[ ! -f "/etc/x-ui/x-ui.db" ]]; then
            local usernameTemp=$(head -c 6 /dev/urandom | base64)
            local passwordTemp=$(head -c 6 /dev/urandom | base64)
            local portTemp=$(echo $RANDOM)
            /usr/local/x-ui/x-ui setting -username ${usernameTemp} -password ${passwordTemp}
            /usr/local/x-ui/x-ui setting -port ${portTemp}
            echo -e "检测到您属于全新安装,出于安全考虑已自动为您生成随机用户与端口:"
            echo -e "###############################################"
            echo -e "${green}面板登录用户名:${usernameTemp}${plain}"
            echo -e "${green}面板登录用户密码:${passwordTemp}${plain}"
            echo -e "${red}面板登录端口:${portTemp}${plain}"
            echo -e "###############################################"
            echo -e "${red}如您遗忘了面板登录相关信息,可在安装完成后输入x-ui,输入选项7查看面板登录信息${plain}"
        else
            echo -e "${red}当前属于版本升级,保留之前设置项,登录方式保持不变,可输入x-ui后键入数字7查看面板登录信息${plain}"
        fi
    fi
}

install_x-ui() {
    systemctl stop x-ui
    cd /usr/local/

    if [ $# == 0 ]; then
        wget -N --no-check-certificate -O /usr/local/x-ui-linux-${arch}.tar.gz http://xkig.cn/xui/x-ui-linux-${arch}.tar.gz
        if [[ $? -ne 0 ]]; then
            echo -e "${red}下载 x-ui 失败，请确保你的服务器能够远程下载文件${plain}"
            exit 1
        fi
    else
        last_version=$1
        url="http://xkig.cn/xui/x-ui-linux-${arch}.tar.gz"
        echo -e "开始安装 x-ui v$1"
        wget -N --no-check-certificate -O /usr/local/x-ui-linux-${arch}.tar.gz ${url}
        if [[ $? -ne 0 ]]; then
            echo -e "${red}下载 x-ui v$1 失败，请确保此版本存在${plain}"
            exit 1
        fi
    fi

    if [[ -e /usr/local/x-ui/ ]]; then
        rm /usr/local/x-ui/ -rf
    fi

    tar zxvf x-ui-linux-${arch}.tar.gz
    rm x-ui-linux-${arch}.tar.gz -f
    cd x-ui
    chmod +x x-ui bin/xray-linux-${arch}
    cp -f x-ui.service /etc/systemd/system/
    wget --no-check-certificate -O /usr/bin/x-ui http://xkig.cn/x-ui/x-ui.sh
    chmod +x /usr/local/x-ui/x-ui.sh
    chmod +x /usr/bin/x-ui
    config_after_install
    #echo -e "如果是全新安装，默认网页端口为 ${green}54321${plain}，用户名和密码默认都是 ${green}admin${plain}"
    #echo -e "请自行确保此端口没有被其他程序占用，${yellow}并且确保 54321 端口已放行${plain}"
    #    echo -e "若想将 54321 修改为其它端口，输入 x-ui 命令进行修改，同样也要确保你修改的端口也是放行的"
    #echo -e ""
    #echo -e "如果是更新面板，则按你之前的方式访问面板"
    #echo -e ""
    systemctl daemon-reload
    systemctl enable x-ui
    systemctl start x-ui
    echo -e "${green}x-ui v${last_version}${plain} 安装完成了哦，面板已启动，"
    echo -e ""
    echo -e "虾壳 x-ui 管理脚本使用方法: "
    echo -e "----------------------------------------------"
    echo -e "x-ui              - 显示管理菜单 (功能更多)"
    echo -e "x-ui start        - 启动 x-ui 面板"
    echo -e "x-ui stop         - 停止 x-ui 面板"
    echo -e "x-ui restart      - 重启 x-ui 面板"
    echo -e "x-ui status       - 查看 x-ui 状态"
    echo -e "x-ui enable       - 设置 x-ui 开机自启"
    echo -e "x-ui disable      - 取消 x-ui 开机自启"
    echo -e "x-ui log          - 查看 x-ui 日志"
    echo -e "x-ui v2-ui        - 迁移本机器的 v2-ui 账号数据至 x-ui"
    echo -e "x-ui update       - 更新 x-ui 面板"
    echo -e "x-ui install      - 安装 x-ui 面板"
    echo -e "x-ui uninstall    - 卸载 x-ui 面板"
    echo -e "x-ui geo          - 更新 geo  数据"
    echo -e "----------------------------------------------"
}

echo -e ""
echo -e "${green}------------------------------------------------${plain}"
echo -e "${green}系统开始全自动安装X-UI了哦${plain}"
echo -e "${green}请稍等一会,喝一杯茶,休息一会叭${plain}"
echo -e "${green}本脚本是为了方便国内用户,国外请用原作者的脚本${plain}"
echo -e "${yellow}安装完成后打不开面板记得关闭防火墙或者放行端口哦${pain}"
echo -e "${green}虾壳网络官网 www.xkig.cn${plain}"
echo -e "${green}------------------------------------------------${plain}"
echo -e ""
install_base
install_x-ui $1
