map $http_upgrade $connection_upgrade {
    default upgrade;
    "" close;
}

server {
    listen 80;
    server_name _;
    client_max_body_size 100m;

    location ~ ^/(api|internal|socket\.io)(/|$) {
        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_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_read_timeout 90s;
        proxy_pass http://server:3001;
    }

    location = /healthz {
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_pass http://server:3001;
    }

    location = /readyz {
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_pass http://server:3001;
    }

    location / {
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_pass http://web:80;
    }
}