server {
    listen 80;
    listen [::]:80;
    server_name _;

    # 前端静态资源
    root /usr/share/nginx/html;
    index index.html;

    # 客户端最大上传大小
    client_max_body_size 10M;

    # API 后端代理
    location /api/ {
        proxy_pass http://127.0.0.1:8000;
        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
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";

        # 超时设置 - 针对AI生成操作的长时间响应
        proxy_connect_timeout 60s;
        proxy_send_timeout 600s;
        proxy_read_timeout 600s;

        # 缓冲设置
        proxy_buffering off;
        proxy_request_buffering off;
    }

    # 后台管理 API 代理
    location /admin/ {
        proxy_pass http://127.0.0.1:8000;
        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;
    }

    # 前端路由支持 (SPA)
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Gzip 压缩
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css text/xml text/javascript application/javascript application/xml+rss application/json;

    # 静态资源缓存
    location ~* \.(jpg|jpeg|png|gif|ico|css|js|svg|woff|woff2|ttf|eot)$ {
        expires 30d;
        add_header Cache-Control "public, immutable";
    }

    # 日志
    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;
}