diff --git a/door-status-config.php b/door-status-config.php
new file mode 100644
index 0000000..9f470d2
--- /dev/null
+++ b/door-status-config.php
@@ -0,0 +1,3 @@
+define( 'DSI_API_URL',   'https://nodered.jfig.net/api/v1/door-open' );
+define( 'DSI_CACHE_KEY', 'dsi_door_open_status' );
+define( 'DSI_CACHE_TTL', 10 );
\ No newline at end of file
diff --git a/wp-api-consumer.php b/wp-api-consumer.php
index 05ec157..10d6486 100644
--- a/wp-api-consumer.php
+++ b/wp-api-consumer.php
@@ -1,48 +1,162 @@
 <?php
 /**
- * Plugin Name: WP API Consumer
- * Plugin URI: https://gitea.alluna.pt/jfig/wp-api-consumer
- * Description: Shows the live value of https://nodered.jfig.net/api/v1/door-open in a menu item or via shortcode.
- * Version:     1.0
- * License:     GPL-2.0+
+ * Plugin Name: Door Status Indicator
+ * Plugin URI:  https://gitea.alluna.pt/jfig/wp-api-consumer
+ * Description: Lightweight, dependency‑free plugin that polls <https://nodered.jfig.net/api/v1/door-open>, caches the status for a few seconds, and shows a real‑time door open/closed indicator (🟢/🔴) via [door_status] shortcode and the Admin Bar.
+ * Version:     1.1.0
+ * Author:      Joao Figueiredo (ChatGPT helper)
+ * Author URI:  https://jfig.net
+ * License:     GPL v2 or later
+ * License URI: https://www.gnu.org/licenses/gpl-2.0.html
+ * Text Domain: door-status-indicator
  */
 
-defined( 'ABSPATH' ) || exit;
-
-/**
- * Fetch the Boolean once every 10 s (adjust TTL to taste).
- */
-function ds_get_state() {
-	$state = get_transient( 'ds_state' );
-
-	if ( false === $state ) {
-		$r = wp_remote_get( 'https://nodered.jfig.net/api/v1/door-open', [ 'timeout' => 4 ] );  // 4 s hard stop
-		$state = is_wp_error( $r ) ? '' : trim( wp_remote_retrieve_body( $r ) );
-		set_transient( 'ds_state', $state, 10 );
-	}
-	return $state;
+if ( ! defined( 'ABSPATH' ) ) {
+    exit; // Exit if accessed directly.
 }
 
-/**
- * Returns a coloured dot (🟢 / 🔴) or ⚪ if the API is unreachable.
- */
-function ds_render() {
-	$s = strtolower( ds_get_state() );
-	if ( 'true' === $s )  return '<span class="door-state door-open"  aria-label="door open">🟢</span>';
-	if ( 'false' === $s ) return '<span class="door-state door-closed" aria-label="door closed">🔴</span>';
-	return '<span class="door-state door-unknown" aria-label="status unknown">⚪</span>';
+/*
+|--------------------------------------------------------------------------
+| Configuration
+|--------------------------------------------------------------------------
+| Place environment‑specific constants inside door-status-config.php.
+| They will be loaded automatically. If the file is missing we fall back to
+| bundled defaults so the plugin keeps working out‑of‑the‑box.
+*/
+
+$config_file = plugin_dir_path( __FILE__ ) . 'door-status-config.php';
+if ( file_exists( $config_file ) ) {
+    require_once $config_file;
+} else {
+    // Fallback defaults – safe to adjust directly here if you prefer.
+    define( 'DSI_API_URL',   'https://nodered.jfig.net/api/v1/door-open' );
+    define( 'DSI_CACHE_KEY', 'dsi_door_open_status' );
+    define( 'DSI_CACHE_TTL', 10 );
 }
-add_shortcode( 'door_state', 'ds_render' );                                 // [door_state]
+
+/*
+|--------------------------------------------------------------------------
+| Core – fetch & cache
+|--------------------------------------------------------------------------
+*/
 
 /**
- * Automatically append the indicator to a menu (optional).
- * Replace 'primary' with your theme’s menu slug if different.
+ * Retrieves the door‑open status (boolean) with transient caching.
+ *
+ * @return bool True if open, false if closed.
  */
-function ds_menu_item( $items, $args ) {
-	if ( 'primary' === $args->theme_location ) {
-		$items .= '<li class="menu-item menu-item-door-state">' . ds_render() . '</li>';
-	}
-	return $items;
-}
-add_filter( 'wp_nav_menu_items', 'ds_menu_item', 10, 2 );
+function dsi_get_status() : bool {
+    $cached = get_transient( DSI_CACHE_KEY );
+    if ( false !== $cached ) {
+        return (bool) $cached;
+    }
 
+    $response = wp_remote_get( DSI_API_URL, [
+        'timeout'    => 3,
+        'user-agent' => 'DoorStatusIndicator/1.1 (+https://wordpress.org/)',
+    ] );
+
+    if ( is_wp_error( $response ) ) {
+        // On error, assume closed and set a short transient to avoid hammering.
+        set_transient( DSI_CACHE_KEY, false, DSI_CACHE_TTL );
+        return false;
+    }
+
+    $body    = wp_remote_retrieve_body( $response );
+    $decoded = json_decode( $body, true );
+    $status  = false;
+
+    if ( is_bool( $decoded ) ) {
+        $status = $decoded;
+    } elseif ( is_array( $decoded ) && isset( $decoded['open'] ) ) {
+        $status = (bool) $decoded['open'];
+    }
+
+    set_transient( DSI_CACHE_KEY, $status, DSI_CACHE_TTL );
+    return $status;
+}
+
+/*
+|--------------------------------------------------------------------------
+| Shortcode [door_status]
+|--------------------------------------------------------------------------
+*/
+
+/**
+ * Outputs a 🟢 or 🔴 indicator reflecting current door status.
+ * Usage: [door_status]
+ *
+ * @return string HTML span with coloured emoji.
+ */
+function dsi_shortcode() : string {
+    $open  = dsi_get_status();
+    $emoji = $open ? '🟢' : '🔴';
+
+    return sprintf(
+        '<span class="door-status-indicator" aria-label="Door is %s">%s</span>',
+        $open ? 'open' : 'closed',
+        $emoji
+    );
+}
+add_shortcode( 'door_status', 'dsi_shortcode' );
+
+/*
+|--------------------------------------------------------------------------
+| Admin Bar indicator
+|--------------------------------------------------------------------------
+*/
+
+/**
+ * Adds a live indicator to the WordPress Admin Bar (front‑ and back‑end).
+ *
+ * @param WP_Admin_Bar $wp_admin_bar The admin bar instance.
+ */
+function dsi_admin_bar( WP_Admin_Bar $wp_admin_bar ) : void {
+    if ( ! current_user_can( 'read' ) ) {
+        return; // Only show to logged‑in users who can read.
+    }
+
+    $open  = dsi_get_status();
+    $emoji = $open ? '🟢' : '🔴';
+    $text  = $open ? __( 'Door Open', 'door-status-indicator' ) : __( 'Door Closed', 'door-status-indicator' );
+
+    $wp_admin_bar->add_node( [
+        'id'    => 'door-status-indicator',
+        'title' => sprintf( '%s %s', $emoji, $text ),
+        'href'  => '#',
+        'meta'  => [
+            'title' => $text,
+        ],
+    ] );
+}
+add_action( 'admin_bar_menu', 'dsi_admin_bar', 1000 );
+
+/*
+|--------------------------------------------------------------------------
+| Front‑end inline CSS
+|--------------------------------------------------------------------------
+*/
+
+function dsi_enqueue_assets() : void {
+    if ( is_admin() ) {
+        return;
+    }
+    $css = '.door-status-indicator{font-size:1.2em;line-height:1}';
+    wp_add_inline_style( 'wp-block-library', $css );
+}
+add_action( 'wp_enqueue_scripts', 'dsi_enqueue_assets' );
+
+/*
+|--------------------------------------------------------------------------
+| WP‑CLI command (optional)
+|--------------------------------------------------------------------------
+*/
+
+if ( defined( 'WP_CLI' ) && WP_CLI ) {
+    WP_CLI::add_command( 'door-status', function() {
+        $status = dsi_get_status() ? 'open 🟢' : 'closed 🔴';
+        WP_CLI::success( "Door is $status" );
+    } );
+}
+
+// End of file