#!/bin/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}致命错误: ${plain} 请使用 root 权限运行此脚本\n" && exit 1

# Check OS and set release variable
if [[ -f /etc/os-release ]]; then
    source /etc/os-release
    release=$ID
elif [[ -f /usr/lib/os-release ]]; then
    source /usr/lib/os-release
    release=$ID
else
    echo "检查服务器操作系统失败，请联系作者!" >&2
    exit 1
fi
echo "目前服务器的操作系统为: $release"

arch() {
    case "$(uname -m)" in
        x86_64 | x64 | amd64 ) echo 'amd64' ;;
        i*86 | x86 ) echo '386' ;;
        armv8* | armv8 | arm64 | aarch64 ) echo 'arm64' ;;
        armv7* | armv7 | arm ) echo 'armv7' ;;
        armv6* | armv6 ) echo 'armv6' ;;
        armv5* | armv5 ) echo 'armv5' ;;
        armv5* | armv5 ) echo 's390x' ;;
        *) echo -e "${green}不支持的CPU架构! ${plain}" && rm -f install.sh && exit 1 ;;
    esac
}

echo "架构: $(arch)"

os_version=$(grep -i version_id /etc/os-release | cut -d \" -f2 | cut -d . -f1)

if [[ "${release}" == "arch" ]]; then
    echo "您的操作系统是 ArchLinux"
elif [[ "${release}" == "manjaro" ]]; then
    echo "您的操作系统是 Manjaro"
elif [[ "${release}" == "armbian" ]]; then
    echo "您的操作系统是 Armbian"
elif [[ "${release}" == "centos" ]]; then
    if [[ ${os_version} -lt 8 ]]; then
        echo -e "${red} 请使用 CentOS 8 或更高版本 ${plain}\n" && exit 1
    fi
elif [[ "${release}" == "ubuntu" ]]; then
    if [[ ${os_version} -lt 20 ]]; then
        echo -e "${red} 请使用 Ubuntu 20 或更高版本!${plain}\n" && exit 1
    fi
elif [[ "${release}" == "fedora" ]]; then
    if [[ ${os_version} -lt 36 ]]; then
        echo -e "${red} 请使用 Fedora 36 或更高版本!${plain}\n" && exit 1
    fi
elif [[ "${release}" == "debian" ]]; then
    if [[ ${os_version} -lt 11 ]]; then
        echo -e "${red} 请使用 Debian 11 或更高版本 ${plain}\n" && exit 1
    fi
elif [[ "${release}" == "almalinux" ]]; then
    if [[ ${os_version} -lt 9 ]]; then
        echo -e "${red} 请使用 AlmaLinux 9 或更高版本 ${plain}\n" && exit 1
    fi
elif [[ "${release}" == "rocky" ]]; then
    if [[ ${os_version} -lt 9 ]]; then
        echo -e "${red} 请使用 RockyLinux 9 或更高版本 ${plain}\n" && exit 1
    fi
elif [[ "${release}" == "oracle" ]]; then
    if [[ ${os_version} -lt 8 ]]; then
        echo -e "${red} 请使用 Oracle Linux 8 或更高版本 ${plain}\n" && exit 1
    fi
else
    echo -e "${red}此脚本不支持您的操作系统。${plain}\n"
    echo "请确保您使用的是以下受支持的操作系统之一："
    echo "- Ubuntu 20.04+"
    echo "- Debian 11+"
    echo "- CentOS 8+"
    echo "- Fedora 36+"
    echo "- Arch Linux"
    echo "- Manjaro"
    echo "- Armbian"
    echo "- AlmaLinux 9+"
    echo "- Rocky Linux 9+"
    echo "- Oracle Linux 8+"
    exit 1

fi

install_base() {
    case "${release}" in
    centos | almalinux | rocky | oracle)
        yum -y update && yum install -y -q wget curl tar tzdata
        ;;
    fedora)
        dnf -y update && dnf install -y -q wget curl tar tzdata
        ;;
    arch | manjaro)
        pacman -Syu && pacman -Syu --noconfirm wget curl tar tzdata
        ;;
    *)
        apt-get update && apt install -y -q wget curl tar tzdata
        ;;
    esac
}

# This function will be called when user installed x-ui out of security
config_after_install() {
    echo -e "${yellow}安装/更新完成！ 为了您的面板安全，建议修改面板设置 ${plain}"
    read -p "想继续修改吗 [y/n]?": config_confirm
    if [[ "${config_confirm}" == "y" || "${config_confirm}" == "Y" ]]; then
        read -p "请设置您的用户名: " config_account
        echo -e "${yellow}您的用户名将是: ${config_account}${plain}"
        read -p "请设置您的密码: " config_password
        echo -e "${yellow}您的密码将是: ${config_password}${plain}"
        read -p "请设置面板端口: " config_port
        echo -e "${yellow}您的面板端口号为: ${config_port}${plain}"
        echo -e "${yellow}正在初始化，请稍候...${plain}"
        /usr/local/x-ui/x-ui setting -username ${config_account} -password ${config_password}
        echo -e "${yellow}用户名和密码设置成功!${plain}"
        /usr/local/x-ui/x-ui setting -port ${config_port}
        echo -e "${yellow}面板端口号设置成功!${plain}"
    else
        echo -e "${red}cancel...${plain}"
        if [[ ! -f "/etc/x-ui/x-ui.db" ]]; then
            local usernameTemp=$(head -c 6 /dev/urandom | base64)
            local passwordTemp=$(head -c 6 /dev/urandom | base64)
            /usr/local/x-ui/x-ui setting -username ${usernameTemp} -password ${passwordTemp}
            echo -e "检测到为全新安装，出于安全考虑将生成随机登录信息:"
            echo -e "###############################################"
            echo -e "${green}用户名: ${usernameTemp}${plain}"
            echo -e "${green}密  码: ${passwordTemp}${plain}"
            echo -e "###############################################"
            echo -e "${red} 如果您忘记了登录信息，可以在安装后输入 x-ui 然后输入 8 选项进行检查 ${plain}"
        else
            echo -e "${red} 这是您的升级，将保留旧设置，如果您忘记了登录信息，您可以输入 x-ui 然后输入 8 选项进行检查 ${plain}"
        fi
    fi
    /usr/local/x-ui/x-ui migrate
}

install_x-ui() {
    cd /usr/local/

    if [ $# == 0 ]; then
        last_version=$(curl -Ls "https://api.github.com/repos/xeefei/3x-ui/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
        if [[ ! -n "$last_version" ]]; then
            echo -e "${red}获取 x-ui 版本失败，可能是 Github API 限制，请稍后再试${plain}"
            exit 1
        fi
        echo -e "获取 x-ui 最新版本：${last_version}，开始安装..."
        wget -N --no-check-certificate -O /usr/local/x-ui-linux-$(arch).tar.gz https://github.com/xeefei/3x-ui/releases/download/${last_version}/x-ui-linux-$(arch).tar.gz
        if [[ $? -ne 0 ]]; then
            echo -e "${red}下载 x-ui 失败, 请检查服务器是否可以连接至 GitHub ${plain}"
            exit 1
        fi
    else
        last_version=$1
        url="https://github.com/xeefei/3x-ui/releases/download/${last_version}/x-ui-linux-$(arch).tar.gz"
        echo -e "开始安装 x-ui $1"
        wget -N --no-check-certificate -O /usr/local/x-ui-linux-$(arch).tar.gz ${url}
        if [[ $? -ne 0 ]]; then
            echo -e "${red}下载 x-ui $1 失败, 请检查此版本是否存在 ${plain}"
            exit 1
        fi
    fi

    if [[ -e /usr/local/x-ui/ ]]; then
        systemctl stop x-ui
        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

    # Check the system's architecture and rename the file accordingly
    if [[ $(arch) == "armv5" || $(arch) == "armv6" || $(arch) == "armv7" ]]; then
        mv bin/xray-linux-$(arch) bin/xray-linux-arm
        chmod +x bin/xray-linux-arm
    fi

    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 https://raw.githubusercontent.com/xeefei/3x-ui/main/x-ui.sh
    chmod +x /usr/local/x-ui/x-ui.sh
    chmod +x /usr/bin/x-ui
    config_after_install

    systemctl daemon-reload
    systemctl enable x-ui
    systemctl start x-ui

    systemctl stop warp-go >/dev/null 2>&1
    wg-quick down wgcf >/dev/null 2>&1
    ipv4=$(curl -s4m8 ip.p3terx.com -k | sed -n 1p)
    ipv6=$(curl -s6m8 ip.p3terx.com -k | sed -n 1p)
    systemctl start warp-go >/dev/null 2>&1
    wg-quick up wgcf >/dev/null 2>&1

    echo -e "${green}x-ui ${last_version}${plain} 安装成功，正在启动..."
    echo -e ""
    echo -e "x-ui 控制菜单用法: "
    echo -e "----------------------------------------------"
    echo -e "x-ui              - 进入管理脚本"
    echo -e "x-ui start        - 启动 x-ui"
    echo -e "x-ui stop         - 关闭 x-ui"
    echo -e "x-ui restart      - 重启 x-ui"
    echo -e "x-ui status       - 查看 x-ui 状态"
    echo -e "x-ui enable       - 启用 x-ui 开机启动"
    echo -e "x-ui disable      - 禁用 x-ui 开机启动"
    echo -e "x-ui log          - 查看 x-ui 运行日志"
    echo -e "x-ui banlog       - 检查 Fail2ban 禁止日志"
    echo -e "x-ui update       - 更新 x-ui"
    echo -e "x-ui install      - 安装 x-ui"
    echo -e "x-ui uninstall    - 卸载 x-ui"
    echo -e "----------------------------------------------"
    echo ""
    if [[ -n $ipv4 ]]; then
        echo -e "${yellow}面板 IPv4 访问地址为：${plain}${green}http://$ipv4:$config_port${plain}"
    fi
    if [[ -n $ipv6 ]]; then
        echo -e "${yellow}面板 IPv6 访问地址为：${plain}${green}http://[$ipv6]:$config_port${plain}"
    fi
    echo -e "请自行确保此端口没有被其他程序占用，${yellow}并且确保${plain}${red} $config_port ${plain}${yellow}端口已放行${plain}"
}

install_base
install_x-ui $1