# 前端静态资源 + 同源反向代理到 yudao-server
# 浏览器只访问本 Nginx，前端 API 地址使用同源路径 /admin-api，不要写容器名

map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}

server {
    listen 80;
    server_name _;

    root /usr/share/nginx/html;
    index index.html;

    # 与后端 spring.servlet.multipart.max-request-size 保持一致
    client_max_body_size 32m;

    gzip on;
    gzip_min_length 1k;
    gzip_comp_level 5;
    gzip_types text/plain text/css application/javascript application/json application/xml image/svg+xml;
    gzip_vary on;

    # 使用 Docker 内置 DNS 动态解析服务名，后端容器重建后无需重启 Nginx
    resolver 127.0.0.11 valid=10s ipv6=off;
    set $yudao_backend http://yudao-server:48080;

    # 前端路由（history 模式）回退到 index.html
    location / {
        try_files $uri $uri/ /index.html;
    }

    location = /index.html {
        add_header Cache-Control "no-cache";
    }

    # 管理后台 API、用户 App API
    location ~ ^/(admin-api|app-api)/ {
        proxy_pass $yudao_backend;
        proxy_http_version 1.1;
        proxy_set_header Host $http_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_set_header Connection "";
        # 流式响应（SSE）不缓冲
        proxy_buffering off;
        proxy_read_timeout 300s;
    }

    # WebSocket
    location /infra/ws {
        proxy_pass $yudao_backend;
        proxy_http_version 1.1;
        proxy_set_header Host $http_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_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_read_timeout 3600s;
    }
}