worker_processes auto;
pid /tmp/nginx.pid;
error_log /tmp/nginx-error.log warn;

events {
    worker_connections 1024;
}

http {
    access_log /tmp/nginx-access.log;
    client_max_body_size 10M;

    # FastAPI env server  →  /env/*
    upstream env_server {
        server 127.0.0.1:8000;
    }

    # Next.js EHR app  →  everything else
    upstream ehr_app {
        server 127.0.0.1:3000;
    }

    server {
        listen 7860;

        # ── OpenEnv API endpoints ──
        # /env/reset   →  FastAPI /reset
        # /env/step    →  FastAPI /step
        # /env/state   →  FastAPI /state
        # /env/healthz →  FastAPI /healthz
        location /env/ {
            proxy_pass http://env_server/;
            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_read_timeout 60s;
        }

        # ── EHR UI + API routes ──
        location / {
            proxy_pass http://ehr_app;
            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_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
        }
    }
}