upstream compliance_backend {
    server compliance-backend:8000;
    keepalive 32;
}

# 文件上传大小限制（法规PDF可能较大）
client_max_body_size 100M;

server {
    listen 80;
    server_name _;

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

    # 超时配置（LLM推理可能较慢）
    proxy_connect_timeout 60s;
    proxy_send_timeout    300s;
    proxy_read_timeout    300s;

    # 通用代理头
    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;
    proxy_http_version 1.1;
    proxy_set_header Connection "";

    # ── 知识库接口 ─────────────────────────────
    location /api/kb/ {
        proxy_pass http://compliance_backend/api/kb/;
    }

    # ── 合规审查接口 ───────────────────────────
    location /api/compliance/ {
        proxy_pass http://compliance_backend/api/compliance/;
    }

    # ── 法规监控接口 ───────────────────────────
    location /api/regulation/ {
        proxy_pass http://compliance_backend/api/regulation/;
    }

    # ── 健康检查 ───────────────────────────────
    location /health {
        proxy_pass http://compliance_backend/health;
    }

    # ── API 文档（开发环境）────────────────────
    location /docs {
        proxy_pass http://compliance_backend/docs;
    }

    location /openapi.json {
        proxy_pass http://compliance_backend/openapi.json;
    }

    # ── 根路径 ─────────────────────────────────
    location / {
        proxy_pass http://compliance_backend/;
    }
}