server {
    listen 80;
    server_name _;

    # Backend API (FastAPI on port 8080) under /api, prefix stripped
    location /api/ {
        proxy_pass http://127.0.0.1:8080/;
        proxy_http_version 1.1;
        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 $scheme;
        proxy_redirect ~^(https?://[^/]+)/(.*)$ $1/api/$2;
        client_max_body_size 0;
        proxy_request_buffering off;
        proxy_read_timeout 3600s;
    }

    # WebSocket tunnel for gliss desktop streaming
    location = /api/tunnel {
        proxy_pass http://127.0.0.1:8080/tunnel;
        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;

        # WebSocket connections can be long-lived
        proxy_read_timeout 86400s;
        proxy_send_timeout 86400s;
    }

    # Frontend (React app on port 3000) — catch-all
    location / {
        proxy_pass http://127.0.0.1:3000;
        proxy_http_version 1.1;
        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;
    }
}