#!/bin/bash

# Certbot 自动安装脚本
# 支持 Debian/Ubuntu, CentOS/RHEL, Fedora

echo "=== 检测系统类型 ==="
if [ -f /etc/os-release ]; then
    . /etc/os-release
    echo "系统: $NAME"
    echo "版本: $VERSION"
else
    echo "无法检测系统类型"
    exit 1
fi

echo ""
echo "=== 开始安装 Certbot ==="

# 检测包管理器并安装
if command -v apt &> /dev/null; then
    echo "检测到 apt (Debian/Ubuntu)"
    sudo apt update
    sudo apt install certbot python3-certbot-nginx -y
    
elif command -v yum &> /dev/null; then
    echo "检测到 yum (CentOS/RHEL)"
    # 安装 EPEL 仓库
    sudo yum install epel-release -y
    sudo yum install certbot python3-certbot-nginx -y
    
elif command -v dnf &> /dev/null; then
    echo "检测到 dnf (Fedora/CentOS 8+)"
    sudo dnf install epel-release -y
    sudo dnf install certbot python3-certbot-nginx -y
    
else
    echo "未检测到支持的包管理器"
    echo "尝试使用 pip 安装..."
    if command -v pip3 &> /dev/null; then
        sudo pip3 install certbot certbot-nginx
    else
        echo "错误: 无法安装 certbot"
        exit 1
    fi
fi

echo ""
echo "=== 验证安装 ==="
if command -v certbot &> /dev/null; then
    certbot --version
    echo ""
    echo "✅ Certbot 安装成功！"
    echo ""
    echo "下一步: 运行以下命令获取 SSL 证书"
    echo "sudo certbot --nginx -d aiorz.com -d www.aiorz.com"
else
    echo "❌ Certbot 安装失败"
    exit 1
fi