server {
    listen       80;
    server_name  localhost;
    client_max_body_size 5m;
# Uncomment the following block (Line6 to Line24) to enable redirect HTTP to HTTPS
#     Redirect HTTP to HTTPS
#     Using 8443 port because that is what is exposed in docker-compose
#     location / {
#         return 301 https://$host:8443$request_uri;
#     }
# }

# server {
#     listen       443 ssl;
#     server_name  localhost;

#     ssl_certificate      /etc/nginx/ssl/server.crt;
#     ssl_certificate_key  /etc/nginx/ssl/server.key;

#     ssl_session_cache    shared:SSL:1m;
#     ssl_session_timeout  5m;

#     ssl_ciphers  HIGH:!aNULL:!MD5;
#     ssl_prefer_server_ciphers  on;

    # gRPC endpoint
    location /grpc/ {
        if ($request_method = OPTIONS) {
            add_header 'Access-Control-Allow-Origin' "$http_origin" always;
            add_header 'Access-Control-Allow-Credentials' 'true' always;
            add_header 'Access-Control-Allow-Methods' 'POST,GET,OPTIONS' always;
            add_header 'Access-Control-Allow-Headers' 'Accept,Accept-Language,Content-Type,Content-Length,X-Grpc-Web,X-User-Agent,Grpc-Timeout,Authorization,Connect-Protocol-Version' always;
            return 204;
        }
        proxy_pass http://${BACKEND_HOST}:${BACKEND_GRPC_WEB_PORT}/;
        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 X-Grpc-Web $http_x_grpc_web;
        proxy_set_header X-User-Agent $http_x_user_agent;
    }

    # MinIO Console
    location = /minio {
        return 301 /minio/;
    }

    location /minio/ {
        rewrite ^/minio/(.*)$ /$1 break;
        proxy_pass http://${MINIO_HOST}:${MINIO_CONSOLE_PORT};
        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 X-Forwarded-Prefix /minio;
        proxy_redirect off;

        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }

    # Public storage path
    location = /storage {
        return 301 /storage/;
    }

    location /storage/ {
        rewrite ^/storage/(.*)$ /${MINIO_BUCKET}/$1 break;
        proxy_pass http://${MINIO_HOST}:${MINIO_API_PORT};
        proxy_set_header Host ${MINIO_HOST}:${MINIO_API_PORT};
        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;
    }

    # Frontend (dev/prod on same port)
    location / {
        proxy_pass http://${FRONTEND_HOST}:80;
        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;

        # Vite HMR WebSocket support
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }

    # New collab WebSocket path
    location = /ws/doc {
        return 301 /ws/doc/;
    }

    location /ws/doc/ {
        proxy_pass http://${COLLAB_HOST}:${COLLAB_GATEWAY_PORT};
        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 $connection_upgrade;
    }

    # RabbitMQ Management Interface
    location /rabbitmq/ {
        proxy_pass http://${RABBITMQ_HOST}:${RABBITMQ_MANAGEMENT_PORT}/;
        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 off;

        # Handle WebSocket connections for management UI
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }


    error_page 404 /404.html;
    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        root /usr/share/nginx/html;
    }
}