# ============================================================
# OpenDance Studio —— nginx 站点配置（Linux 原生部署）
#
# 一个站点同时提供：
#   /            管理端静态站点（React 构建产物）
#   /api/        NestJS API 反向代理
#   /health      健康检查反向代理
#   /static/     上传文件（模型 / 音频 / 关键点），由 API 提供
#   /contracts/  契约快照（只读，方便另两端查阅）
#
# 安装位置：/etc/nginx/sites-available/opendance.conf
#          （并软链到 /etc/nginx/sites-enabled/）
# ============================================================

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

    # 上传上限：单个 VRM / FBX 可达 512 MiB，必须与后端 UPLOAD_MAX_BYTES 一致
    client_max_body_size 512m;
    client_body_timeout 300s;

    # 管理端静态站点
    root __APP_DIR__/admin;
    index index.html;

    charset utf-8;

    # ---- 管理端 SPA ----
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Vite 产物带内容哈希，可长缓存
    location /assets/ {
        expires 30d;
        add_header Cache-Control "public, immutable";
        try_files $uri =404;
    }

    # ---- API 反向代理 ----
    location /api/ {
        proxy_pass http://__API_HOST__:__API_PORT__;
        proxy_http_version 1.1;
        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;

        # 大文件上传与关键点序列下载都可能较慢
        proxy_connect_timeout 30s;
        proxy_send_timeout 300s;
        proxy_read_timeout 300s;
        proxy_request_buffering off;
    }

    location = /health {
        proxy_pass http://__API_HOST__:__API_PORT__/health;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        access_log off;
    }

    # ---- 上传文件 ----
    location /static/ {
        proxy_pass http://__API_HOST__:__API_PORT__;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        expires 7d;
        add_header Cache-Control "public";
    }

    # ---- 契约快照（只读）----
    location /contracts/ {
        alias __APP_DIR__/contracts/;
        autoindex on;
        default_type text/plain;
    }

    # 隐藏文件一律拒绝
    location ~ /\. {
        deny all;
        access_log off;
        log_not_found off;
    }

    gzip on;
    gzip_types text/plain text/css application/json application/javascript
               application/x-ndjson text/xml application/xml image/svg+xml;
    gzip_min_length 1024;
}