server {
    listen 80;
    server_name _;

    root /usr/share/nginx/html;
    index index.html;

    # Proxy API + WebSocket requests to the FastAPI container
    location /session/ {
        proxy_pass http://linnet-api:8522;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        # WebSocket upgrade for the audio WS endpoint
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";

        # SSE: disable buffering so events reach the client immediately
        proxy_buffering off;
        proxy_read_timeout 3600s;
    }

    location /health {
        proxy_pass http://linnet-api:8522;
        proxy_set_header Host $host;
    }

    location = /index.html {
        add_header Cache-Control "no-cache, no-store, must-revalidate";
        try_files $uri /index.html;
    }

    location / {
        try_files $uri $uri/ /index.html;
    }

    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff2?)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }
}