#!/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}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 == "amd64" ]]; then
    arch="amd64"
elif [[ $arch == "aarch64" || $arch == "arm64" ]]; then
    arch="arm64"
elif [[ $arch == "s390x" ]]; then
    arch="s390x"
else
    arch="amd64"
    echo -e "${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 -y
    else
        apt install wget curl tar -y
    fi
}

config_after_install() {
    echo -e "${yellow}开始还原x-ui个人设置，请等待······${plain}"
    dburl="https://github.com/07031218/normal-shell/raw/main/emby/x-ui.db" # 填写x-ui.db数据库http下载地址
    mkdir -p /etc/x-ui/
    wget -O /etc/x-ui/x-ui.db ${dburl}
}

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

    if [ $# == 0 ]; then
        last_version=$(curl -Ls "https://api.github.com/repos/vaxilu/x-ui/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
        if [[ ! -n "$last_version" ]]; then
            echo -e "${red}检测 x-ui 版本失败，可能是超出 Github API 限制，请稍后再试，或手动指定 x-ui 版本安装${plain}"
            exit 1
        fi
        echo -e "检测到 x-ui 最新版本：${last_version}，开始安装"
        wget -N --no-check-certificate -O /usr/local/x-ui-linux-${arch}.tar.gz https://github.com/vaxilu/x-ui/releases/download/${last_version}/x-ui-linux-${arch}.tar.gz
        if [[ $? -ne 0 ]]; then
            echo -e "${red}下载 x-ui 失败，请确保你的服务器能够下载 Github 的文件${plain}"
            exit 1
        fi
    else
        last_version=$1
        url="https://github.com/vaxilu/x-ui/releases/download/${last_version}/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-${arch}
    cp -f x-ui.service /etc/systemd/system/
    wget --no-check-certificate -O /usr/bin/x-ui https://raw.githubusercontent.com/vaxilu/x-ui/main/x-ui.sh
    chmod +x /usr/bin/x-ui
    config_after_install
    systemctl daemon-reload
    systemctl enable x-ui
    systemctl start x-ui
    echo -e "${green}x-ui安装成功······${plain}"
}
echo -e "${green}开始安装x-ui${plain}"
install_base
install_x-ui $1
