server {
    listen 18080;
    server_name localhost;
    root /usr/share/nginx/html;
    index index.html index.htm;

    # 에러 페이지 설정
    error_page 404 /index.html;
    error_page 500 502 503 504 /50x.html;

    # 로깅 설정 (디버깅용)
    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log debug;

    # ⚠️ 중요: runtime-env.js 파일 특별 처리
    location = /runtime-env.js {
        try_files $uri $uri/ =404;
        expires -1;
        add_header Cache-Control "no-cache, no-store, must-revalidate";
        add_header Pragma "no-cache";
        add_header Content-Type "application/javascript";
        
        # CORS 헤더 추가
        add_header Access-Control-Allow-Origin "*";
        add_header Access-Control-Allow-Methods "GET, OPTIONS";
        add_header Access-Control-Allow-Headers "Content-Type";
    }

    # SPA 라우팅 처리 (Vue Router)
    location / {
        try_files $uri $uri/ /index.html;
        
        # HTML 파일은 캐시하지 않음
        location ~* \.html$ {
            expires -1;
            add_header Cache-Control "no-cache, no-store, must-revalidate";
            add_header Pragma "no-cache";
        }
    }

    # 정적 자산 캐시 최적화 (runtime-env.js 제외)
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        # runtime-env.js는 위에서 별도 처리되므로 제외
        if ($uri = "/runtime-env.js") {
            break;
        }
        
        expires 1y;
        add_header Cache-Control "public, immutable";
        access_log off;
    }

    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types
        text/plain
        text/css
        text/xml
        text/javascript
        application/javascript
        application/xml+rss
        application/json
        application/xml
        image/svg+xml;

    # 보안 헤더
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; connect-src 'self' http://smarketing.20.249.184.228.nip.io https://smarketing.20.249.184.228.nip.io" always;

    # 헬스체크 엔드포인트
    location /health {
        access_log off;
        return 200 "healthy\n";
        add_header Content-Type text/plain;
    }

    # 파비콘 캐시
    location /favicon.ico {
        expires 1M;
        access_log off;
        log_not_found off;
    }

    # 숨겨진 파일 접근 차단
    location ~ /\. {
        deny all;
        access_log off;
        log_not_found off;
    }
}