#!/bin/bash

# ==========================================
# 标题：X-UI 全能安装脚本 (精简服务器版)
# 更新：移除第三方多线程下载器，保留原生 wget/curl
# ==========================================

# --- 颜色配置 ---
Red="\033[31m"
Green="\033[32m"
Yellow="\033[33m"
Blue="\033[36m"
Font="\033[0m"

# --- 核心配置 (用户定制) ---
DB_URL_PUBLIC="https://git.77582585.xyz/3344/dock/releases/download/3xui/x-ui%20%E6%88%B702.db"
DB_URL_PRIVATE="https://git.77582585.xyz/attachments/c457401f-76dd-4499-8ea3-a8b628bc963a"

INSTALL_PATH="/usr/local/x-ui"
BIN_LINK="/usr/bin/x-ui"
DB_PATH="/etc/x-ui/x-ui.db"
SET_USER="3344"
SET_PASS="3344"
SET_PORT="8443"

# ==========================================
# 1. 模式选择
# ==========================================
clear
echo -e "${Blue}#################################################${Font}"
echo -e "${Blue}#      X-UI 自动安装脚本 (轻量精简版)           #${Font}"
echo -e "${Blue}#################################################${Font}"
echo -e "${Yellow}请选择安装配置模式：${Font}"
echo -e "-------------------------------------------------"
echo -e "1. ${Green}标准配置安装${Font} (使用指定的公共数据库配置)"
echo -e "2. ${Green}私人配置安装${Font} (私人数据库配置严禁个人使用)"
echo -e "-------------------------------------------------"
read -p "请输入数字 [1-2] (默认1): " INSTALL_MODE
[[ -z "$INSTALL_MODE" ]] && INSTALL_MODE="1"

# ==========================================
# 2. 网络环境智能检测
# ==========================================
check_network() {
    echo -e "${Yellow}>> [1/6] 正在检测网络环境...${Font}"
    HAS_IPV4=0
    HAS_IPV6=0
    
    if curl -s4m2 https://www.google.com/generate_204 >/dev/null 2>&1 || curl -s4m2 https://www.baidu.com >/dev/null 2>&1; then
        HAS_IPV4=1
    fi
    if curl -s6m2 https://www.google.com/generate_204 >/dev/null 2>&1; then
        HAS_IPV6=1
    fi

    if [[ $HAS_IPV4 -eq 1 ]]; then
        echo -e "${Green}检测到 IPv4 网络，将优先使用 IPv4 通道${Font}"
        NET_OPT="-4"
    elif [[ $HAS_IPV6 -eq 1 ]]; then
        echo -e "${Green}检测到纯 IPv6 网络，将自动切换至 IPv6 通道${Font}"
        NET_OPT="-6"
    else
        echo -e "${Red}错误：未检测到任何可用网络！${Font}"
        exit 1
    fi
}
check_network

# ==========================================
# 3. 系统环境与依赖处理
# ==========================================
echo -e "${Yellow}>> [2/6] 安装基础依赖...${Font}"
PM="apt"
if [[ -f /etc/redhat-release ]] || command -v yum >/dev/null 2>&1; then PM="yum"; fi

install_soft() {
    if [ "$PM" == "apt" ]; then
        apt-get install -y $1 >/dev/null 2>&1
    elif [ "$PM" == "yum" ]; then
        yum install -y $1 >/dev/null 2>&1
    fi
}

if [ "$PM" == "apt" ]; then
    pgrep -x "apt" && killall apt apt-get dpkg >/dev/null 2>&1
    rm -rf /var/lib/apt/lists/lock /var/lib/dpkg/lock*
    dpkg --configure -a >/dev/null 2>&1
    apt-get update -o Acquire::http::Timeout="20" || echo -e "${Red}源更新超时，尝试继续...${Font}"
    apt-get install -y curl wget tar ca-certificates bc sqlite3
    if ! apt-get install -y ntpdate >/dev/null 2>&1; then
        apt-get install -y ntpsec-ntpdate >/dev/null 2>&1
    fi
else
    yum install -y epel-release >/dev/null 2>&1
    yum install -y curl wget tar bc sqlite3 ntpdate >/dev/null 2>&1
fi

# ==========================================
# 4. 时间校准与架构匹配
# ==========================================
echo -e "${Yellow}>> [3/6] 校准时间与识别架构...${Font}"
rm -f /etc/localtime
ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
if command -v ntpdate >/dev/null 2>&1; then
    ntpdate pool.ntp.org >/dev/null 2>&1
else
    date -s "$(curl -sI g.cn | grep Date | cut -d' ' -f3-6)Z" >/dev/null 2>&1
fi

ARCH=$(uname -m)
DOWNLOAD_URL=""
FILE_NAME=""

case $ARCH in
    x86_64)
        FILE_NAME="x-ui-linux-amd64.tar.gz"
        DOWNLOAD_URL="https://git.77582585.xyz/attachments/40eeb013-5006-423f-ad74-a0541ab340f4"
        ;;
    aarch64|armv8)
        FILE_NAME="x-ui-linux-arm64.tar.gz"
        DOWNLOAD_URL="https://git.77582585.xyz/attachments/4ab708d5-6bc8-42c0-8494-ef5efe03e074"
        ;;
    i386|i686)
        FILE_NAME="x-ui-linux-386.tar.gz"
        DOWNLOAD_URL="https://git.77582585.xyz/attachments/d1604006-c6b7-4c7c-9652-b42b229ef4cb"
        ;;
    armv5*)
        FILE_NAME="x-ui-linux-armv5.tar.gz"
        DOWNLOAD_URL="https://git.77582585.xyz/attachments/8a5c678c-4ae4-43c4-910d-7e47f7c21c22"
        ;;
    armv6*)
        FILE_NAME="x-ui-linux-armv6.tar.gz"
        DOWNLOAD_URL="https://git.77582585.xyz/attachments/0e7c7fd7-192e-44b3-9739-785a5fb1b51f"
        ;;
    armv7*)
        FILE_NAME="x-ui-linux-armv7.tar.gz"
        DOWNLOAD_URL="https://git.77582585.xyz/attachments/9d1bf416-afb6-4e9f-b46b-ab3a1913a998"
        ;;
    s390x)
        FILE_NAME="x-ui-linux-s390x.tar.gz"
        DOWNLOAD_URL="https://git.77582585.xyz/attachments/18784828-0d20-4bc5-908c-15f91bcf8eb5"
        ;;
    *)
        echo -e "${Red}不支持或无法识别的架构: $ARCH${Font}"
        exit 1
        ;;
esac
echo -e "${Green}检测到架构: $ARCH，匹配文件名: $FILE_NAME${Font}"

# ==========================================
# 5. 本地基础下载逻辑
# ==========================================
download_manager() {
    local url=$1
    local file=$2
    rm -f "$file"
    
    echo -e "${Yellow}>> 尝试使用 Wget 下载...${Font}"
    if wget $NET_OPT --no-check-certificate --timeout=30 --tries=3 -O "$file" "$url"; then return 0; fi
    
    echo -e "${Yellow}>> Wget 失败，尝试使用 Curl 兜底...${Font}"
    curl $NET_OPT -L -k --connect-timeout 30 --retry 3 -o "$file" "$url"
}

echo -e "${Yellow}>> [4/6] 下载安装包 (Mode: $NET_OPT)...${Font}"
mkdir -p /usr/local/
cd /usr/local/
download_manager "$DOWNLOAD_URL" "$FILE_NAME"

if ! tar -tzf "$FILE_NAME" >/dev/null 2>&1; then
    echo -e "${Red}严重错误：安装包下载失败或文件损坏！${Font}"
    exit 1
fi

# ==========================================
# 6. 安装与配置
# ==========================================
echo -e "${Yellow}>> [5/6] 解压与配置...${Font}"
systemctl stop x-ui >/dev/null 2>&1
killall x-ui >/dev/null 2>&1
rm -rf x-ui
tar zxvf "$FILE_NAME" >/dev/null
cd x-ui
chmod +x x-ui x-ui.sh bin/xray-linux-*
ln -sf "$INSTALL_PATH/x-ui.sh" "$BIN_LINK"
mkdir -p /etc/x-ui/
rm -f "$DB_PATH"

if [ "$INSTALL_MODE" == "1" ]; then
    TARGET_DB="$DB_URL_PUBLIC"
else
    TARGET_DB="$DB_URL_PRIVATE"
fi

echo -e "${Yellow}>> 正在下载数据库配置...${Font}"
download_manager "$TARGET_DB" "$DB_PATH"

if [ ! -s "$DB_PATH" ] || [ $(stat -c%s "$DB_PATH") -lt 1000 ]; then
    echo -e "${Red}警告：数据库下载失败，尝试使用默认空数据库初始化...${Font}"
    cp /usr/local/x-ui/bin/x-ui.db "$DB_PATH"
fi

echo -e "${Yellow}>> 正在重置账户权限...${Font}"
chmod 777 "$DB_PATH" >/dev/null 2>&1
RESET_SUCCESS=0
if command -v sqlite3 >/dev/null 2>&1; then
    sqlite3 -cmd ".timeout 2000" "$DB_PATH" "UPDATE settings SET value='/' WHERE key='webBasePath';"
    sqlite3 -cmd ".timeout 2000" "$DB_PATH" "UPDATE settings SET value='$SET_PORT' WHERE key='webPort';"
    sqlite3 -cmd ".timeout 2000" "$DB_PATH" "UPDATE users SET username='$SET_USER', password='$SET_PASS' WHERE id=1;"
    CURRENT_PASS=$(sqlite3 "$DB_PATH" "SELECT password FROM users WHERE id=1;")
    if [ "$CURRENT_PASS" == "$SET_PASS" ]; then
        RESET_SUCCESS=1
    fi
fi

if [ $RESET_SUCCESS -eq 0 ]; then
    ./x-ui setting -username "$SET_USER" -password "$SET_PASS" -port "$SET_PORT" >/dev/null 2>&1
fi
chmod 644 "$DB_PATH" >/dev/null 2>&1

# ==========================================
# 7. 启动与放行
# ==========================================
echo -e "${Yellow}>> [6/6] 启动服务与防火墙放行...${Font}"
cat > /etc/systemd/system/x-ui.service <<EOF
[Unit]
Description=x-ui Service
After=network.target

[Service]
Type=simple
User=root
WorkingDirectory=$INSTALL_PATH
ExecStart=$INSTALL_PATH/x-ui
Restart=on-failure
RestartSec=5s

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload
systemctl enable x-ui
systemctl restart x-ui
sleep 2

if command -v ufw >/dev/null 2>&1; then ufw allow $SET_PORT/tcp >/dev/null 2>&1; fi
if command -v firewall-cmd >/dev/null 2>&1; then 
    firewall-cmd --zone=public --add-port=$SET_PORT/tcp --permanent >/dev/null 2>&1
    firewall-cmd --reload >/dev/null 2>&1
fi
iptables -I INPUT -p tcp --dport $SET_PORT -j ACCEPT 2>/dev/null

IP=$(curl -s4m5 ip.sb)
[ -z "$IP" ] && IP=$(curl -s6m5 ip.sb)

echo -e "\n${Blue}#################################################${Font}"
echo -e "${Green}      X-UI 安装完成 (精简服务器版)            ${Font}"
echo -e "${Blue}#################################################${Font}"
echo -e "访问地址 ：    ${Green}http://$IP:$SET_PORT${Font}"
echo -e "用户名   ：    ${Green}$SET_USER${Font}"
echo -e "密码     ：    ${Green}$SET_PASS${Font}"
echo -e "${Blue}#################################################${Font}"