#!/bin/bash

red='\033[0;31m'
green='\033[0;32m'
blue='\033[0;34m'
yellow='\033[0;33m'
plain='\033[0m'

cur_dir=$(pwd)

xui_folder="${XUI_MAIN_FOLDER:=/usr/local/x-ui}"
xui_service="${XUI_SERVICE:=/etc/systemd/system}"

[[ $EUID -ne 0 ]] && echo -e "${red}致命错误: ${plain} 请以root权限运行此脚本 \n " && exit 1

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 "检查系统操作系统失败，请联系作者!" >&2
    exit 1
fi
echo "操作系统版本为: $release"

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

echo "架构: $(arch)"

DEFAULT_ACCOUNT="admin"
DEFAULT_PASSWORD="66668888"
DEFAULT_PORT="6688"

LOCAL_URL="http://ipan.anwing.me/3xui"

install_base() {
    case "${release}" in
        ubuntu | debian | armbian)
            apt-get update -y && apt-get install -y -q cron curl tar tzdata socat ca-certificates openssl
            ;;
        fedora | amzn | virtuozzo | rhel | almalinux | rocky | ol)
            dnf makecache -y && dnf install -y -q cronie curl tar tzdata socat ca-certificates openssl
            ;;
        centos)
            if [[ "${VERSION_ID}" =~ ^7 ]]; then
                yum makecache -y && yum install -y cronie curl tar tzdata socat ca-certificates openssl
            else
                dnf makecache -y && dnf install -y -q cronie curl tar tzdata socat ca-certificates openssl
            fi
            ;;
        arch | manjaro | parch)
            pacman -Sy --noconfirm cronie curl tar tzdata socat ca-certificates openssl
            ;;
        opensuse-tumbleweed | opensuse-leap)
            zypper refresh && zypper -q install -y cron curl tar timezone socat ca-certificates openssl
            ;;
        alpine)
            apk update && apk add dcron curl tar tzdata socat ca-certificates openssl
            ;;
        *)
            apt-get update -y && apt-get install -y -q cron curl tar tzdata socat ca-certificates openssl
            ;;
    esac
}

download_file() {
    local filename=$1
    local url=$2
    
    echo -e "${yellow}下载: ${url}${plain}"
    curl -fLR --retry 3 --connect-timeout 10 --max-time 120 -o "${filename}" "${url}"
    if [[ $? -ne 0 ]]; then
        echo -e "${red}下载失败: ${url}${plain}"
        return 1
    fi
    return 0
}

config_after_install() {
    echo -e "${yellow}正在配置面板...${plain}"
    
    local config_account=${DEFAULT_ACCOUNT}
    local config_password=${DEFAULT_PASSWORD}
    local config_port=${DEFAULT_PORT}

    if [[ ! -f "/etc/x-ui/x-ui.db" ]]; then
        ${xui_folder}/x-ui setting -username ${config_account} -password ${config_password}
        ${xui_folder}/x-ui setting -port ${config_port}
        
        echo -e "###############################################"
        echo -e "${green}x-ui 已自动配置:${plain}"
        echo -e "${green}用户名: ${config_account}${plain}"
        echo -e "${green}密码: ${config_password}${plain}"
        echo -e "${green}端口: ${config_port}${plain}"
        echo -e "###############################################"
    else
        echo -e "${yellow}检测到旧配置，保持原有设置。${plain}"
    fi
    
    ${xui_folder}/x-ui migrate
}

install_x-ui() {
    cd ${xui_folder%/x-ui}/

    local arch_type=$(arch)
    local xui_tarball="x-ui-linux-${arch_type}.tar.gz"
    local xui_url="${LOCAL_URL}/${xui_tarball}"
    local script_url="${LOCAL_URL}/x-ui.sh"

    echo -e "${green}开始下载 x-ui...${plain}"
    if ! download_file "${xui_tarball}" "${xui_url}"; then
        exit 1
    fi

    if [[ -e ${xui_folder}/ ]]; then
        if [[ $release == "alpine" ]]; then
            rc-service x-ui stop > /dev/null 2>&1
        else
            systemctl stop x-ui > /dev/null 2>&1
        fi
        pkill -f 'mtg-linux-[^ ]* run ' > /dev/null 2>&1 || true
        rm ${xui_folder}/ -rf
    fi

    echo -e "${green}解压文件...${plain}"
    tar zxf ${xui_tarball}
    if [[ $? -ne 0 ]]; then
        rm ${xui_tarball} -f
        echo -e "${red}解压失败${plain}"
        exit 1
    fi
    rm ${xui_tarball} -f

    cd x-ui
    if [[ $? -ne 0 || ! -s x-ui ]]; then
        echo -e "${red}文件不完整${plain}"
        exit 1
    fi
    chmod +x x-ui
    chmod +x x-ui.sh

    if [[ ${arch_type} == "armv5" || ${arch_type} == "armv6" || ${arch_type} == "armv7" ]]; then
        mv bin/xray-linux-${arch_type} bin/xray-linux-arm32
        chmod +x bin/xray-linux-arm32
        if [[ -f bin/mtg-linux-${arch_type} ]]; then
            mv bin/mtg-linux-${arch_type} bin/mtg-linux-arm
            chmod +x bin/mtg-linux-arm
        fi
    fi
    chmod +x x-ui bin/xray-linux-${arch_type}
    if [[ -f bin/mtg-linux-arm ]]; then
        chmod +x bin/mtg-linux-arm
    elif [[ -f bin/mtg-linux-${arch_type} ]]; then
        chmod +x bin/mtg-linux-${arch_type}
    fi

    echo -e "${green}下载管理脚本...${plain}"
    local xui_script_temp="/usr/bin/x-ui-temp.$$"
    rm -f "${xui_script_temp}"
    if ! download_file "${xui_script_temp}" "${script_url}"; then
        exit 1
    fi
    mv -f "${xui_script_temp}" /usr/bin/x-ui
    chmod +x /usr/bin/x-ui
    mkdir -p /var/log/x-ui
    
    config_after_install

    echo -e "${green}配置服务...${plain}"
    if [[ $release == "alpine" ]]; then
        local xui_rc_temp="/etc/init.d/x-ui.tmp.$$"
        rm -f "${xui_rc_temp}"
        download_file "${xui_rc_temp}" "${LOCAL_URL}/x-ui.rc"
        if [[ $? -ne 0 || ! -s "${xui_rc_temp}" ]]; then
            rm -f "${xui_rc_temp}"
            echo -e "${red}下载 x-ui.rc 失败${plain}"
            exit 1
        fi
        mv -f "${xui_rc_temp}" /etc/init.d/x-ui
        chmod +x /etc/init.d/x-ui
        rc-update add x-ui
        rc-service x-ui start
    else
        if [ -f "x-ui.service" ]; then
            cp -f "x-ui.service" "${xui_service}/x-ui.service"
        elif [ -f "x-ui.service.debian" ] && [[ "${release}" == "ubuntu" || "${release}" == "debian" || "${release}" == "armbian" ]]; then
            cp -f "x-ui.service.debian" "${xui_service}/x-ui.service"
        elif [ -f "x-ui.service.arch" ] && [[ "${release}" == "arch" || "${release}" == "manjaro" || "${release}" == "parch" ]]; then
            cp -f "x-ui.service.arch" "${xui_service}/x-ui.service"
        else
            download_file "${xui_service}/x-ui.service" "${LOCAL_URL}/x-ui.service.debian"
        fi
        
        systemctl daemon-reload
        systemctl enable x-ui
        systemctl start x-ui
    fi

    local server_ip=$(curl -s http://ipinfo.io/ip 2>/dev/null || hostname -I | awk '{print $1}')
    
    echo -e ""
    echo -e "${green}x-ui 安装完成!${plain}"
    echo -e ""
    echo -e "${green}访问地址: http://${server_ip}:${DEFAULT_PORT}${plain}"
    echo -e "${green}用户名: ${DEFAULT_ACCOUNT}${plain}"
    echo -e "${green}密码: ${DEFAULT_PASSWORD}${plain}"
}

echo -e ""
echo -e "${green}------------------------------------------------${plain}"
echo -e "${green}3xui 本地一键安装脚本${plain}"
echo -e "${green}下载源: ${LOCAL_URL}${plain}"
echo -e "${green}------------------------------------------------${plain}"
echo -e ""
install_base
install_x-ui