server {
    listen 80;
    server_name _;

    client_max_body_size 10M;

    root /usr/share/nginx/html;
    index issues-dashboard.html;

    # HTML 캐시 비활성화
    location ~* \.html$ {
        expires -1;
        add_header Cache-Control "no-store, no-cache, must-revalidate";
    }

    # JS/CSS 캐시 비활성화
    location ~* \.(js|css)$ {
        expires -1;
        add_header Cache-Control "no-store, no-cache, must-revalidate";
    }

    # 정적 파일 (이미지 등)
    location ~* \.(png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf)$ {
        expires 1h;
        add_header Cache-Control "public, no-transform";
    }

    # API 프록시 (System 3 API)
    location /api/ {
        proxy_pass http://system3-api:8000/api/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        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_cache_bypass $http_upgrade;
    }

    # 업로드 파일
    location /uploads/ {
        alias /usr/share/nginx/html/uploads/;
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    location / {
        try_files $uri $uri/ /issues-dashboard.html;
    }
}