nginx.conf

worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;

    server {
        listen 7860 default_server;
        server_name _;

        # Increase body size for audio uploads if needed
        client_max_body_size 50M;

        # Route /api requests to FastAPI
        # The trailing slash in proxy_pass automatically strips /api/
        location /api/ {
            proxy_pass http://127.0.0.1:8000/;
            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;
            
            # Debug header
            add_header X-Backend "FastAPI" always;
        }

        # Route everything else to Streamlit
        location / {
            proxy_pass http://127.0.0.1:8501/;
            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 support for Streamlit
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_read_timeout 86400;
            
            # Debug header
            add_header X-Backend "Streamlit" always;
        }
    }
}