server {
    listen 80;
    server_name yotrip.labz.io.vn localhost;
    client_max_body_size 50M;

    # Proxy uploaded files from backend (MUST come before image pattern matching)
    location /uploads/ {
        proxy_pass http://backend:3001;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
        add_header Cache-Control "public, max-age=31536000";
    }

    # JavaScript and CSS files - immutable caching
    location ~* \.(?:js|css)$ {
        root /usr/share/nginx/html;
        expires 1y;
        add_header Cache-Control "public, immutable";
        add_header Vary "Accept-Encoding" always;
        access_log off;
    }

    # Images and fonts - long caching (NOT including /uploads/)
    location ~* ^(?!/uploads/).*\.(?:jpg|jpeg|png|gif|ico|svg|woff|woff2|ttf|eot)$ {
        root /usr/share/nginx/html;
        expires 1y;
        add_header Cache-Control "public, max-age=31536000";
        access_log off;
    }

    # Main app route - SPA fallback (only for HTML)
    location / {
        root /usr/share/nginx/html;
        index index.html index.htm;
        # Only redirect actual routes to index.html, not assets
        try_files $uri $uri/ /index.html;
        add_header Cache-Control "no-cache, no-store, must-revalidate";
    }

    # Proxy API requests to backend
    location /api/v1/ {
        proxy_pass http://backend:3001;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }

    # Proxy WebSocket connection
    location /socket.io/ {
        proxy_pass http://backend:3001;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_set_header Host $host;
    }

    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        root /usr/share/nginx/html;
    }
}