server {
    listen 8080;
    server_name _;

    # CORS headers for all responses
    add_header Access-Control-Allow-Origin * always;
    add_header Access-Control-Allow-Methods "GET, POST, PUT, DELETE, OPTIONS" always;
    add_header Access-Control-Allow-Headers "Content-Type, Authorization, X-Hasura-Admin-Secret, X-Hasura-Role, X-Hasura-User-Id, X-Hasura-Allowed-Roles, X-Requested-With, Cache-Control" always;
    add_header Access-Control-Max-Age 3600 always;

    # Handle preflight OPTIONS
    location = /options {
        internal;
        return 204;
    }

    # Health check
    location /health {
        default_type application/json;
        return 200 '{"status":"ok"}';
    }

    # System config
    location /data/ocpprouter/systemConfig {
        default_type application/json;
        return 200 '{"userPreferences":{"telemetryConsent":false},"ocppRouter":{"networkProfile":"default"}}';
    }

    # GraphQL endpoint
    location /v1/graphql {
        proxy_pass http://cariflex-hasura:8080;
        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 300;
        proxy_connect_timeout 60;
    }

    # Default - proxy to Hasura
    location / {
        if ($request_method = OPTIONS) {
            add_header Access-Control-Allow-Origin * always;
            add_header Access-Control-Allow-Methods "GET, POST, PUT, DELETE, OPTIONS" always;
            add_header Access-Control-Allow-Headers "Content-Type, Authorization, X-Hasura-Admin-Secret, X-Hasura-Role, X-Hasura-User-Id, X-Hasura-Allowed-Roles, X-Requested-With, Cache-Control" always;
            add_header Access-Control-Max-Age 3600 always;
            return 204;
        }
        proxy_pass http://cariflex-hasura:8080;
        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 300;
        proxy_connect_timeout 60;
    }
}