#!/bin/bash

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[0;33m'
PLAIN='\033[0m'

red() {
    echo -e "\033[31m\033[01m$1\033[0m"
}

green() {
    echo -e "\033[32m\033[01m$1\033[0m"
}

yellow() {
    echo -e "\033[33m\033[01m$1\033[0m"
}

#Add some basic function here
function LOGD() {
    echo -e "${YELLOW}[DEG] $* ${PLAIN}"
}

function LOGE() {
    echo -e "${RED}[ERR] $* ${PLAIN}"
}

function LOGI() {
    echo -e "${GREEN}[INF] $* ${PLAIN}"
}
# check root
[[ $EUID -ne 0 ]] && LOGE "错误:  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
    LOGE "未检测到系统版本，请联系脚本作者！\n" && 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 [[ ${os_version} -le 6 ]]; then
        LOGE "请使用 CentOS 7 或更高版本的系统！\n" && exit 1
    fi
elif [[ x"${release}" == x"ubuntu" ]]; then
    if [[ ${os_version} -lt 16 ]]; then
        LOGE "请使用 Ubuntu 16 或更高版本的系统！\n" && exit 1
    fi
elif [[ x"${release}" == x"debian" ]]; then
    if [[ ${os_version} -lt 8 ]]; then
        LOGE "请使用 Debian 8 或更高版本的系统！\n" && exit 1
    fi
fi

confirm() {
    if [[ $# > 1 ]]; then
        echo && read -p "$1 [默认$2]: " temp
        if [[ x"${temp}" == x"" ]]; then
            temp=$2
        fi
    else
        read -p "$1 [y/n]: " temp
    fi
    if [[ x"${temp}" == x"y" || x"${temp}" == x"Y" ]]; then
        return 0
    else
        return 1
    fi
}

confirm_restart() {
    confirm "是否重启面板，重启面板也会重启 xray" "y"
    if [[ $? == 0 ]]; then
        restart
    else
        show_menu
    fi
}

before_show_menu() {
    echo && echo -n -e "${YELLOW}按回车返回主菜单: ${PLAIN}" && read temp
    show_menu
}

install() {
    bash <(curl -Ls https://raw.githubusercontent.com/sing-web/x-ui/master/install_CN.sh)
    if [[ $? == 0 ]]; then
        if [[ $# == 0 ]]; then
            start
        else
            start 0
        fi
    fi
}

update() {
    confirm "本功能会强制重装当前最新版，数据不会丢失，是否继续?" "n"
    if [[ $? != 0 ]]; then
        LOGE "已取消"
        if [[ $# == 0 ]]; then
            before_show_menu
        fi
        return 0
    fi
    bash <(curl -Ls https://raw.githubusercontent.com/sing-web/x-ui/master/install_CN.sh)
    if [[ $? == 0 ]]; then
        LOGI "更新完成，已自动重启面板 "
        exit 0
    fi
}

uninstall() {
    confirm "确定要卸载面板吗,xray 也会卸载?" "n"
    if [[ $? != 0 ]]; then
        if [[ $# == 0 ]]; then
            show_menu
        fi
        return 0
    fi
    systemctl stop x-ui
    systemctl disable x-ui
    rm /etc/systemd/system/x-ui.service -f
    systemctl daemon-reload
    systemctl reset-failed
    rm /etc/x-ui/ -rf
    rm /usr/local/x-ui/ -rf
    rm /usr/bin/x-ui -f

    echo ""
    echo -e "x-ui 面板已卸载成功"
    echo ""

    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

reset_user() {
    confirm "确定要将用户名和密码重置为 admin 吗" "n"
    if [[ $? != 0 ]]; then
        if [[ $# == 0 ]]; then
            show_menu
        fi
        return 0
    fi
    /usr/local/x-ui/x-ui setting -username admin -password admin
    echo -e "用户名和密码已重置为 ${GREEN}admin${PLAIN}，现在请重启面板"
    confirm_restart
}

reset_config() {
    confirm "确定要重置所有面板设置吗，账号数据不会丢失，用户名和密码不会改变" "n"
    if [[ $? != 0 ]]; then
        if [[ $# == 0 ]]; then
            show_menu
        fi
        return 0
    fi
    /usr/local/x-ui/x-ui setting -reset
    echo -e "所有面板设置已重置为默认值，现在请重启面板，并使用默认的 ${GREEN}54321${PLAIN} 端口访问面板"
    confirm_restart
}

check_config() {
    info=$(/usr/local/x-ui/x-ui setting -show true)
    if [[ $? != 0 ]]; then
        LOGE "get current settings error,please check logs"
        show_menu
    fi
    LOGI "${info}"
}

set_port() {
    echo && echo -n -e "输入端口号[1-65535]: " && read port
    if [[ -z "${port}" ]]; then
        LOGD "已取消"
        before_show_menu
    else
        /usr/local/x-ui/x-ui setting -port ${port}
        echo -e "设置端口完毕，现在请重启面板，并使用新设置的端口 ${GREEN}${port}${PLAIN} 访问面板"
        confirm_restart
    fi
}

start() {
    check_status
    if [[ $? == 0 ]]; then
        echo ""
        LOGI "面板已运行，无需再次启动，如需重启请选择重启"
    else
        systemctl start x-ui
        sleep 2
        check_status
        if [[ $? == 0 ]]; then
            LOGI "x-ui 启动成功"
        else
            LOGE "面板启动失败，可能是因为启动时间超过了两秒，请稍后查看日志信息"
        fi
    fi

    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

stop() {
    check_status
    if [[ $? == 1 ]]; then
        echo ""
        LOGI "面板已停止，无需再次停止"
    else
        systemctl stop x-ui
        sleep 2
        check_status
        if [[ $? == 1 ]]; then
            LOGI "x-ui 与 xray 停止成功"
        else
            LOGE "面板停止失败，可能是因为停止时间超过了两秒，请稍后查看日志信息"
        fi
    fi

    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

restart() {
    systemctl restart x-ui
    sleep 2
    check_status
    if [[ $? == 0 ]]; then
        LOGI "x-ui 与 xray 重启成功"
    else
        LOGE "面板重启失败，可能是因为启动时间超过了两秒，请稍后查看日志信息"
    fi
    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

status() {
    systemctl status x-ui -l
    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

enable() {
    systemctl enable x-ui
    if [[ $? == 0 ]]; then
        LOGI "x-ui 设置开机自启成功"
    else
        LOGE "x-ui 设置开机自启失败"
    fi

    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

disable() {
    systemctl disable x-ui
    if [[ $? == 0 ]]; then
        LOGI "x-ui 取消开机自启成功"
    else
        LOGE "x-ui 取消开机自启失败"
    fi

    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

show_log() {
    journalctl -u x-ui.service -e --no-pager -f
    if [[ $# == 0 ]]; then
        before_show_menu
    fi
}

install_bbr() {
    # temporary workaround for installing bbr
    bash <(curl -L -s https://raw.githubusercontent.com/teddysun/across/master/bbr.sh)
    echo ""
    before_show_menu
}

update_shell() {
    wget -O /usr/bin/x-ui -N --no-check-certificate https://github.com/sing-web/x-ui/raw/master/x-ui_CN.sh
    if [[ $? != 0 ]]; then
        echo ""
        LOGE "下载脚本失败，请检查本机能否连接 Github"
        before_show_menu
    else
        chmod +x /usr/bin/x-ui
        LOGI "升级脚本成功，请重新运行脚本" && exit 0
    fi
}

# 0: running, 1: not running, 2: not installed
check_status() {
    if [[ ! -f /etc/systemd/system/x-ui.service ]]; then
        return 2
    fi
    temp=$(systemctl status x-ui | grep Active | awk '{print $3}' | cut -d "(" -f2 | cut -d ")" -f1)
    if [[ x"${temp}" == x"running" ]]; then
        return 0
    else
        return 1
    fi
}

check_enabled() {
    temp=$(systemctl is-enabled x-ui)
    if [[ x"${temp}" == x"enabled" ]]; then
        return 0
    else
        return 1
    fi
}

check_uninstall() {
    check_status
    if [[ $? != 2 ]]; then
        echo ""
        LOGE "面板已安装，请不要重复安装"
        if [[ $# == 0 ]]; then
            before_show_menu
        fi
        return 1
    else
        return 0
    fi
}

check_install() {
    check_status
    if [[ $? == 2 ]]; then
        echo ""
        LOGE "请先安装面板"
        if [[ $# == 0 ]]; then
            before_show_menu
        fi
        return 1
    else
        return 0
    fi
}

show_status() {
    check_status
    case $? in
    0)
        echo -e "面板状态: ${GREEN}已运行${PLAIN}"
        show_enable_status
        ;;
    1)
        echo -e "面板状态: ${YELLOW}未运行${PLAIN}"
        show_enable_status
        ;;
    2)
        echo -e "面板状态: ${RED}未安装${PLAIN}"
        ;;
    esac
    show_xray_status
}

show_enable_status() {
    check_enabled
    if [[ $? == 0 ]]; then
        echo -e "是否开机自启: ${GREEN}是${PLAIN}"
    else
        echo -e "是否开机自启: ${RED}否${PLAIN}"
    fi
}

check_xray_status() {
    count=$(ps -ef | grep "xray-linux" | grep -v "grep" | wc -l)
    if [[ count -ne 0 ]]; then
        return 0
    else
        return 1
    fi
}

show_xray_status() {
    check_xray_status
    if [[ $? == 0 ]]; then
        echo -e "xray 状态: ${GREEN}运行${PLAIN}"
    else
        echo -e "xray 状态: ${RED}未运行${PLAIN}"
    fi
}

ssl_cert_issue() {
    wget -N --no-check-certificate https://raw.githubusercontent.com/Misaka-blog/acme-script/main/acme.sh && bash acme.sh
}

open_ports(){
    systemctl stop firewalld.service 2>/dev/null
    systemctl disable firewalld.service 2>/dev/null
    setenforce 0 2>/dev/null
    ufw disable 2>/dev/null
    iptables -P INPUT ACCEPT 2>/dev/null
    iptables -P FORWARD ACCEPT 2>/dev/null
    iptables -P OUTPUT ACCEPT 2>/dev/null
    iptables -t nat -F 2>/dev/null
    iptables -t mangle -F 2>/dev/null
    iptables -F 2>/dev/null
    iptables -X 2>/dev/null
    netfilter-persistent save 2>/dev/null
    green "所有端口已放行成功！"
}

show_usage() {
    echo "x-ui 管理脚本使用方法: "
    echo "------------------------------------------"
    echo "x-ui              - 显示管理菜单 (功能更多)"
    echo "x-ui start        - 启动 x-ui 面板"
    echo "x-ui stop         - 停止 x-ui 面板"
    echo "x-ui restart      - 重启 x-ui 面板"
    echo "x-ui status       - 查看 x-ui 状态"
    echo "x-ui enable       - 设置 x-ui 开机自启"
    echo "x-ui disable      - 取消 x-ui 开机自启"
    echo "x-ui log          - 查看 x-ui 日志"
    echo "x-ui update       - 更新 x-ui 面板"
    echo "x-ui install      - 安装 x-ui 面板"
    echo "x-ui uninstall    - 卸载 x-ui 面板"
    echo "------------------------------------------"
}

show_menu() {
    echo -e "
  ${GREEN}x-ui 面板管理脚本${PLAIN}
  ${GREEN}0.${PLAIN} 退出脚本
————————————————
  ${GREEN}1.${PLAIN} 安装 x-ui
  ${GREEN}2.${PLAIN} 更新 x-ui
  ${GREEN}3.${PLAIN} 卸载 x-ui
————————————————
  ${GREEN}4.${PLAIN} 重置用户名密码
  ${GREEN}5.${PLAIN} 重置面板设置
  ${GREEN}6.${PLAIN} 设置面板端口
  ${GREEN}7.${PLAIN} 查看当前面板设置
————————————————
  ${GREEN}8.${PLAIN} 启动 x-ui
  ${GREEN}9.${PLAIN} 停止 x-ui
  ${GREEN}10.${PLAIN} 重启 x-ui
  ${GREEN}11.${PLAIN} 查看 x-ui 状态
  ${GREEN}12.${PLAIN} 查看 x-ui 日志
————————————————
  ${GREEN}13.${PLAIN} 设置 x-ui 开机自启
  ${GREEN}14.${PLAIN} 取消 x-ui 开机自启
————————————————
  ${GREEN}15.${PLAIN} 一键安装 bbr (最新内核)
  ${GREEN}16.${PLAIN} 一键申请 SSL 证书 (acme申请)
  ${GREEN}17.${PLAIN} 一键放开所有网络端口
 "
    show_status
    echo && read -p "请输入选择 [0-17]: " num

    case "${num}" in
    0)
        exit 0
        ;;
    1)
        check_uninstall && install
        ;;
    2)
        check_install && update
        ;;
    3)
        check_install && uninstall
        ;;
    4)
        check_install && reset_user
        ;;
    5)
        check_install && reset_config
        ;;
    6)
        check_install && set_port
        ;;
    7)
        check_install && check_config
        ;;
    8)
        check_install && start
        ;;
    9)
        check_install && stop
        ;;
    10)
        check_install && restart
        ;;
    11)
        check_install && status
        ;;
    12)
        check_install && show_log
        ;;
    13)
        check_install && enable
        ;;
    14)
        check_install && disable
        ;;
    15)
        install_bbr
        ;;
    16)
        ssl_cert_issue
        ;;
    17)
        open_ports
        ;;
    *)
        LOGE "请输入正确的数字 [0-17]"
        ;;
    esac
}

if [[ $# > 0 ]]; then
    case $1 in
    "start")
        check_install 0 && start 0
        ;;
    "stop")
        check_install 0 && stop 0
        ;;
    "restart")
        check_install 0 && restart 0
        ;;
    "status")
        check_install 0 && status 0
        ;;
    "enable")
        check_install 0 && enable 0
        ;;
    "disable")
        check_install 0 && disable 0
        ;;
    "log")
        check_install 0 && show_log 0
        ;;
    "update")
        check_install 0 && update 0
        ;;
    "install")
        check_uninstall 0 && install 0
        ;;
    "uninstall")
        check_install 0 && uninstall 0
        ;;
    *) show_usage ;;
    esac
else
    show_menu
fi