#!/bin/bash

# 3D素材系统 - Nginx 域名配置脚本
# 域名: 3D.YYDD.AI
# 后端服务: http://localhost:2320

echo "=========================================="
echo "   配置 Nginx 反向代理"
echo "   域名: 3D.YYDD.AI"
echo "=========================================="

# 1. 安装 Nginx（如果未安装）
echo "1. 检查并安装 Nginx..."
if ! command -v nginx &> /dev/null; then
    echo "安装 Nginx..."
    apt-get update
    apt-get install -y nginx
else
    echo "Nginx 已安装: $(nginx -v 2>&1)"
fi

# 2. 创建 Nginx 配置文件
echo ""
echo "2. 创建 Nginx 配置..."
cat > /etc/nginx/sites-available/3d.yydd.ai << 'EOF'
# 3D 素材系统 - Nginx 配置
# 域名: 3D.YYDD.AI 和 3d.yydd.ai

server {
    listen 80;
    listen [::]:80;
    
    server_name 3d.yydd.ai 3D.YYDD.AI www.3d.yydd.ai;
    
    # 日志文件
    access_log /var/log/nginx/3d-yydd-access.log;
    error_log /var/log/nginx/3d-yydd-error.log;
    
    # 客户端请求体大小限制（设置为 0 表示不限制）
    client_max_body_size 0;
    
    # 超时设置（支持大文件上传）
    client_body_timeout 3600s;
    client_header_timeout 3600s;
    send_timeout 3600s;
    proxy_connect_timeout 3600s;
    proxy_send_timeout 3600s;
    proxy_read_timeout 3600s;
    
    # 缓冲区设置
    client_body_buffer_size 128k;
    proxy_buffer_size 4k;
    proxy_buffers 4 32k;
    proxy_busy_buffers_size 64k;
    
    location / {
        # 反向代理到本地 2320 端口（FRP 穿透后的 NAS 服务）
        proxy_pass http://localhost:2320;
        
        # 代理头设置
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        
        # WebSocket 支持（如果需要）
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        
        # 禁用缓冲以支持大文件上传
        proxy_request_buffering off;
        proxy_buffering off;
    }
    
    # API 路由特殊处理（确保上传不受限制）
    location /api/ {
        proxy_pass http://localhost:2320;
        
        # 代理头设置
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        
        # 特别针对上传的设置
        proxy_request_buffering off;
        proxy_buffering off;
        client_max_body_size 0;
        
        # 增加超时时间
        proxy_connect_timeout 3600s;
        proxy_send_timeout 3600s;
        proxy_read_timeout 3600s;
    }
}
EOF

echo "✅ Nginx 配置文件已创建: /etc/nginx/sites-available/3d.yydd.ai"

# 3. 启用站点
echo ""
echo "3. 启用站点..."
ln -sf /etc/nginx/sites-available/3d.yydd.ai /etc/nginx/sites-enabled/
echo "✅ 站点已启用"

# 4. 测试 Nginx 配置
echo ""
echo "4. 测试 Nginx 配置..."
if nginx -t; then
    echo "✅ Nginx 配置测试通过"
else
    echo "❌ Nginx 配置测试失败"
    exit 1
fi

# 5. 重启 Nginx
echo ""
echo "5. 重启 Nginx..."
systemctl restart nginx
systemctl enable nginx

if systemctl is-active --quiet nginx; then
    echo "✅ Nginx 已成功启动"
else
    echo "❌ Nginx 启动失败"
    systemctl status nginx
    exit 1
fi

echo ""
echo "=========================================="
echo "   ✅ 配置完成！"
echo "=========================================="
echo ""
echo "📋 配置信息："
echo "  域名: 3D.YYDD.AI"
echo "  后端: http://localhost:2320"
echo "  上传限制: 无限制"
echo "  超时时间: 3600秒（1小时）"
echo ""
echo "🌐 访问地址："
echo "  http://3d.yydd.ai"
echo "  http://3D.YYDD.AI"
echo ""
echo "📝 下一步："
echo "  1. 确保域名 3D.YYDD.AI 已解析到 180.97.221.140"
echo "  2. 如需 HTTPS，请运行: certbot --nginx -d 3d.yydd.ai -d www.3d.yydd.ai"
echo ""
echo "✅ 完成！"