server {
    listen 80;
    server_name localhost;

    # 前端静态文件
    root /var/www/dist;
    index index.html;

    # 文件上传限制
    client_max_body_size 50M;

    # API 路由 → PHP-FPM
    location /api/ {
        fastcgi_pass chat-php:9000;
        fastcgi_index index.php;
        include fastcgi_params;

        # 关键：硬编码 PHP 入口，让 Slim 正确解析路由
        fastcgi_param SCRIPT_FILENAME /var/www/html/public/index.php;
        
        # 关键：显式设置 SCRIPT_NAME 为空 base path
        # 否则 PHP-FPM 会推断为 /api/index.php，导致 Slim 路由匹配失败
        fastcgi_param SCRIPT_NAME /index.php;
        
        fastcgi_read_timeout 300;

        # HTTPS 反向代理头
        fastcgi_param HTTPS on;
        fastcgi_param HTTP_X_FORWARDED_PROTO https;
        fastcgi_param HTTP_X_FORWARDED_HOST www.eryang.wang;
    }

    # SPA 路由回退：所有非 API 请求返回 index.html
    location / {
        try_files $uri $uri/ /index.html;
    }

    # 静态资源缓存
    location ~* \.(css|js|png|jpg|jpeg|gif|ico|svg|woff|woff2)$ {
        expires 1M;
        add_header Cache-Control "public, immutable";
    }
}