worker_processes auto;

events {
    worker_connections 1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    sendfile        on;
    keepalive_timeout 65;

    # Gzip
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml;
    gzip_min_length 1024;

    # 로그 포맷
    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent"';

    access_log /var/log/nginx/access.log main;
    error_log  /var/log/nginx/error.log warn;

    # 업스트림
    upstream backend {
        server backend:8080;
    }

    upstream frontend {
        server frontend:3000;
    }

    server {
        listen 80;
        server_name _;

        client_max_body_size 100M;

        # API → Spring Boot
        location /api/ {
            proxy_pass         http://backend;
            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_read_timeout 60s;
        }

        # 파일 다운로드 직접 서비스 (선택)
        location /uploads/ {
            alias /data/uploads/;
            expires 7d;
            add_header Cache-Control "public";
        }

        # 나머지 → Next.js
        location / {
            proxy_pass         http://frontend;
            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;
            # Next.js HMR (개발 시)
            proxy_http_version 1.1;
            proxy_set_header   Upgrade    $http_upgrade;
            proxy_set_header   Connection "upgrade";
        }
    }
}