server {
    listen 80;
    server_name _;

    # 用户端前端
    location / {
        root /usr/share/nginx/user;
        index index.html;
        try_files $uri $uri/ /index.html;
    }

    # 管理后台前端
    location /admin/ {
        root /usr/share/nginx;
        try_files $uri $uri/ /admin/index.html;
        add_header Cache-Control "no-cache, no-store, must-revalidate";
    }

    # 后端 API（含 OAuth 回调）
    location /api/ {
        proxy_pass http://backend:8010;
        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;
    }

    # 健康检查
    location /health {
        proxy_pass http://backend:8010;
        proxy_set_header Host $host;
    }
}