server {
    listen 80;
    server_name localhost;

    # 前端静态文件
    root /usr/share/nginx/html;
    index index.html;

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

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

    # API 代理
    location /api/ {
        proxy_pass http://baodanagent-api:5001/;
        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;
    }

    # Insurance API 代理
    location /insurance/ {
        proxy_pass http://baodanagent-api:5001/insurance/;
        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;
    }

    # Insurance SSE 流式接口（对话）
    location /insurance/chat/message {
        proxy_pass http://baodanagent-api:5001/insurance/chat/message;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header Connection '';
        proxy_http_version 1.1;
        chunked_transfer_encoding off;
        proxy_buffering off;
        proxy_cache off;
        proxy_read_timeout 300s;
    }

    # 健康检查
    location /health {
        proxy_pass http://baodanagent-api:5001/health;
    }

    # 静态资源缓存
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }
}