fix: Localhost license bypass, rewrite rules flush, WooCommerce orders (v0.2.2)

- Add localhost license bypass for development environments
- Flush rewrite rules when license status changes to fix 404 on /metrics
- Fix wc_orders_count() missing required status parameter

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -5,6 +5,45 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.2.2] - 2026-02-02
+
+### Fixed
+
+- Fixed `wc_orders_count()` call missing required status parameter in WooCommerce orders metrics
+
+## [0.2.1] - 2026-02-02
+
+### Added
+
+- Localhost license bypass for development environments (localhost, 127.0.0.1, ::1, \*.localhost, \*.local)
+- Automatic rewrite rules flush when license status changes
+
+### Fixed
+
+- Fixed 404 error on `/metrics` endpoint when license becomes valid after plugin activation
+
+## [0.2.0] - 2026-02-02
+
+### Added
+
+- WooCommerce integration metrics (when WooCommerce is active):
+  - `wordpress_woocommerce_products_total` - Products by status and type
+  - `wordpress_woocommerce_orders_total` - Orders by status
+  - `wordpress_woocommerce_revenue_total` - Revenue (all time, today, month)
+  - `wordpress_woocommerce_customers_total` - Customers (registered, guest)
+- Cron job metrics:
+  - `wordpress_cron_events_total` - Scheduled cron events by hook
+  - `wordpress_cron_overdue_total` - Number of overdue cron events
+  - `wordpress_cron_next_run_timestamp` - Unix timestamp of next scheduled cron
+- Transient cache metrics:
+  - `wordpress_transients_total` - Transients by type (total, with_expiration, persistent, expired)
+- WooCommerce metrics section in settings (only visible when WooCommerce is active)
+- Support for WooCommerce HPOS (High-Performance Order Storage)
+
+### Changed
+
+- Updated Help tab with new metrics reference
+
 ## [0.1.1] - 2026-02-02
 
 ### Changed

CLAUDE.md

@@ -15,6 +15,9 @@ This plugin provides a Prometheus `/metrics` endpoint and an extensible way to a
 - Prometheus compatible authenticated `/metrics` endpoint
 - Optional default metrics (users, posts, comments, plugins)
 - Runtime metrics (HTTP requests, request duration, database queries)
+- Cron job metrics (scheduled events, overdue, next run)
+- Transient cache metrics (total, expiring, expired)
+- WooCommerce integration (products, orders, revenue, customers)
 - Dedicated plugin settings under 'Settings/Metrics' menu
 - Extensible by other plugins using `wp_prometheus_collect_metrics` action hook
 - License management integration
@@ -27,11 +30,11 @@ This project is proudly **"vibe-coded"** using Claude.AI - the entire codebase w
 
 **Note for AI Assistants:** Clean this section after the specific features are done or new releases are made. Effective changes are tracked in `CHANGELOG.md`. Do not add completed versions here - document them in the Session History section at the end of this file.
 
-### Version 0.2.0 (Planned)
+### Version 0.3.0 (Planned)
 
-- WooCommerce integration metrics
+- Custom metric builder in admin
-- Cron job metrics
+- Metric export/import
-- Transient cache metrics
+- Grafana dashboard templates
 
 ## Technical Stack
 
@@ -282,6 +285,28 @@ add_action( 'wp_prometheus_collect_metrics', function( $collector ) {
 
 ## Session History
 
+### 2026-02-02 - Extended Metrics (v0.2.0)
+
+- Added WooCommerce integration metrics (only when WooCommerce is active):
+  - `wordpress_woocommerce_products_total` - Products by status and type
+  - `wordpress_woocommerce_orders_total` - Orders by status
+  - `wordpress_woocommerce_revenue_total` - Revenue (all time, today, month)
+  - `wordpress_woocommerce_customers_total` - Customers (registered, guest)
+- Added cron job metrics:
+  - `wordpress_cron_events_total` - Scheduled cron events by hook (top 20)
+  - `wordpress_cron_overdue_total` - Number of overdue cron events
+  - `wordpress_cron_next_run_timestamp` - Unix timestamp of next scheduled cron
+- Added transient cache metrics:
+  - `wordpress_transients_total` - Transients by type (total, with_expiration, persistent, expired)
+- Updated Settings page with new metric categories
+- Updated Help tab with new metrics reference
+- **Key Learning**: WooCommerce HPOS (High-Performance Order Storage) requires different queries
+  - Check `OrderUtil::custom_orders_table_usage_is_enabled()` to determine storage type
+  - HPOS uses `wc_orders` table instead of `posts` and `postmeta`
+- **Key Learning**: Cron event labeling requires cardinality control
+  - Limit to top 20 hooks to prevent label explosion
+  - Use `arsort()` to get most frequent hooks first
+
 ### 2026-02-02 - Runtime Metrics (v0.1.0)
 
 - Implemented runtime metrics collection for HTTP requests and database queries

PLAN.md

@@ -161,12 +161,6 @@ https://example.com/metrics/?token=your-auth-token
 
 ## Future Enhancements
 
-### Version 0.2.0
-
-- WooCommerce integration metrics
-- Cron job metrics
-- Transient cache metrics
-
 ### Version 0.3.0
 
 - Custom metric builder in admin

README.md

@@ -92,6 +92,33 @@ scrape_configs:
 
 **Note:** Runtime metrics aggregate data across requests. Enable only the metrics you need to minimize performance impact.
 
+### Cron Metrics (v0.2.0+)
+
+| Metric | Type | Labels | Description |
+|--------|------|--------|-------------|
+| wordpress_cron_events_total | Gauge | hook | Scheduled cron events by hook |
+| wordpress_cron_overdue_total | Gauge | - | Number of overdue cron events |
+| wordpress_cron_next_run_timestamp | Gauge | - | Unix timestamp of next scheduled cron |
+
+### Transient Metrics (v0.2.0+)
+
+| Metric | Type | Labels | Description |
+|--------|------|--------|-------------|
+| wordpress_transients_total | Gauge | type | Transients by type (total, with_expiration, persistent, expired) |
+
+### WooCommerce Metrics (v0.2.0+)
+
+These metrics are only available when WooCommerce is active.
+
+| Metric | Type | Labels | Description |
+|--------|------|--------|-------------|
+| wordpress_woocommerce_products_total | Gauge | status, type | Products by status and type |
+| wordpress_woocommerce_orders_total | Gauge | status | Orders by status |
+| wordpress_woocommerce_revenue_total | Gauge | period, currency | Revenue (all_time, today, month) |
+| wordpress_woocommerce_customers_total | Gauge | type | Customers (registered, guest) |
+
+**Note:** WooCommerce metrics support both legacy post-based orders and HPOS (High-Performance Order Storage).
+
 ## Extending with Custom Metrics
 
 Add your own metrics using the `wp_prometheus_collect_metrics` action:

languages/wp-prometheus-de_CH.po

@@ -3,7 +3,7 @@
 # This file is distributed under the GPL v2 or later.
 msgid ""
 msgstr ""
-"Project-Id-Version: WP Prometheus 0.1.0\n"
+"Project-Id-Version: WP Prometheus 0.2.0\n"
 "Report-Msgid-Bugs-To: https://src.bundespruefstelle.ch/magdev/wp-prometheus/issues\n"
 "POT-Creation-Date: 2026-02-02T00:00:00+00:00\n"
 "PO-Revision-Date: 2026-02-02T00:00:00+00:00\n"
@@ -15,184 +15,347 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
-#: src/Admin/Settings.php:40
+#: src/Admin/Settings.php
 msgid "Metrics Settings"
 msgstr "Metriken-Einstellungen"
 
-#: src/Admin/Settings.php:41
+#: src/Admin/Settings.php
 msgid "Metrics"
 msgstr "Metriken"
 
-#: src/Admin/Settings.php:58
+#: src/Admin/Settings.php
-msgid "License Settings"
+msgid "License"
-msgstr "Lizenz-Einstellungen"
+msgstr "Lizenz"
 
-#: src/Admin/Settings.php:65
+#: src/Admin/Settings.php
-msgid "Authentication"
+msgid "Help"
-msgstr "Authentifizierung"
+msgstr "Hilfe"
 
-#: src/Admin/Settings.php:73
+#: src/Admin/Settings.php
-msgid "Default Metrics"
-msgstr "Standard-Metriken"
-
-#: src/Admin/Settings.php:150
 msgid "License settings saved."
 msgstr "Lizenz-Einstellungen gespeichert."
 
-#: src/Admin/Settings.php:195
+#: src/Admin/Settings.php
 msgid "License is active and valid."
 msgstr "Lizenz ist aktiv und gueltig."
 
-#: src/Admin/Settings.php:196
+#: src/Admin/Settings.php
 msgid "License is invalid."
 msgstr "Lizenz ist ungueltig."
 
-#: src/Admin/Settings.php:197
+#: src/Admin/Settings.php
 msgid "License has expired."
 msgstr "Lizenz ist abgelaufen."
 
-#: src/Admin/Settings.php:198
+#: src/Admin/Settings.php
 msgid "License has been revoked."
 msgstr "Lizenz wurde widerrufen."
 
-#: src/Admin/Settings.php:199
+#: src/Admin/Settings.php
 msgid "License is inactive."
 msgstr "Lizenz ist inaktiv."
 
-#: src/Admin/Settings.php:200
+#: src/Admin/Settings.php
 msgid "License has not been validated yet."
 msgstr "Lizenz wurde noch nicht validiert."
 
-#: src/Admin/Settings.php:201
+#: src/Admin/Settings.php
 msgid "License server is not configured."
 msgstr "Lizenz-Server ist nicht konfiguriert."
 
+#: src/Admin/Settings.php
+msgid "Unknown status."
+msgstr "Unbekannter Status."
+
 #. translators: %s: Expiration date
-#: src/Admin/Settings.php:214
+#: src/Admin/Settings.php
 msgid "Expires: %s"
 msgstr "Laeuft ab: %s"
 
 #. translators: %s: Time ago
-#: src/Admin/Settings.php:225
+#: src/Admin/Settings.php
 msgid "Last checked: %s ago"
 msgstr "Zuletzt geprueft: vor %s"
 
-#: src/Admin/Settings.php:239
+#: src/Admin/Settings.php
 msgid "License Server URL"
 msgstr "Lizenz-Server URL"
 
-#: src/Admin/Settings.php:249
+#: src/Admin/Settings.php
 msgid "License Key"
 msgstr "Lizenzschluessel"
 
-#: src/Admin/Settings.php:259
+#: src/Admin/Settings.php
 msgid "Server Secret"
 msgstr "Server-Geheimnis"
 
-#: src/Admin/Settings.php:264
+#: src/Admin/Settings.php
 msgid "Leave empty to keep existing."
 msgstr "Leer lassen, um bestehenden Wert zu behalten."
 
-#: src/Admin/Settings.php:270
+#: src/Admin/Settings.php
 msgid "Save License Settings"
 msgstr "Lizenz-Einstellungen speichern"
 
-#: src/Admin/Settings.php:272
+#: src/Admin/Settings.php
 msgid "Validate License"
 msgstr "Lizenz validieren"
 
-#: src/Admin/Settings.php:275
+#: src/Admin/Settings.php
 msgid "Activate License"
 msgstr "Lizenz aktivieren"
 
-#: src/Admin/Settings.php:301
+#: src/Admin/Settings.php
-msgid "Configure authentication for the /metrics endpoint."
+msgid "Authentication"
-msgstr "Authentifizierung fuer den /metrics-Endpunkt konfigurieren."
+msgstr "Authentifizierung"
 
-#: src/Admin/Settings.php:310
+#: src/Admin/Settings.php
-msgid "Select which default metrics to expose."
-msgstr "Waehlen Sie, welche Standard-Metriken bereitgestellt werden sollen."
-
-#: src/Admin/Settings.php:324
-msgid "Regenerate"
-msgstr "Neu generieren"
-
-#: src/Admin/Settings.php:327
-msgid "Use this token to authenticate Prometheus scrape requests."
-msgstr "Verwenden Sie diesen Token zur Authentifizierung von Prometheus-Abfragen."
-
-#: src/Admin/Settings.php:340
-msgid "WordPress Info (version, PHP version, multisite)"
-msgstr "WordPress-Info (Version, PHP-Version, Multisite)"
-
-#: src/Admin/Settings.php:341
-msgid "Total Users by Role"
-msgstr "Benutzer nach Rolle"
-
-#: src/Admin/Settings.php:342
-msgid "Total Posts by Type and Status"
-msgstr "Beitraege nach Typ und Status"
-
-#: src/Admin/Settings.php:343
-msgid "Total Comments by Status"
-msgstr "Kommentare nach Status"
-
-#: src/Admin/Settings.php:344
-msgid "Total Plugins (active/inactive)"
-msgstr "Plugins (aktiv/inaktiv)"
-
-#: src/Admin/Settings.php:345
-msgid "HTTP Requests Total (by method, status, endpoint)"
-msgstr "HTTP-Anfragen gesamt (nach Methode, Status, Endpunkt)"
-
-#: src/Admin/Settings.php:346
-msgid "HTTP Request Duration (histogram)"
-msgstr "HTTP-Anfragedauer (Histogramm)"
-
-#: src/Admin/Settings.php:347
-msgid "Database Queries Total (by endpoint)"
-msgstr "Datenbank-Abfragen gesamt (nach Endpunkt)"
-
-#: src/Admin/Settings.php:369
-msgid "Prometheus Configuration"
-msgstr "Prometheus-Konfiguration"
-
-#: src/Admin/Settings.php:370
-msgid "Add the following to your prometheus.yml:"
-msgstr "Fuegen Sie Folgendes zu Ihrer prometheus.yml hinzu:"
-
-#. translators: %s: Endpoint URL
-#: src/Admin/Settings.php:385
-msgid "Metrics endpoint: %s"
-msgstr "Metriken-Endpunkt: %s"
-
-#: src/Admin/Settings.php:93
-msgid "Auth Token"
-msgstr "Auth-Token"
-
-#: src/Admin/Settings.php:101
 msgid "Enabled Metrics"
 msgstr "Aktivierte Metriken"
 
-#: src/Plugin.php:120
+#: src/Admin/Settings.php
+msgid "Configure authentication for the /metrics endpoint."
+msgstr "Authentifizierung fuer den /metrics-Endpunkt konfigurieren."
+
+#: src/Admin/Settings.php
+msgid "Select which metrics to expose on the /metrics endpoint."
+msgstr "Waehlen Sie, welche Metriken auf dem /metrics-Endpunkt bereitgestellt werden sollen."
+
+#: src/Admin/Settings.php
+msgid "Auth Token"
+msgstr "Auth-Token"
+
+#: src/Admin/Settings.php
+msgid "Select Metrics"
+msgstr "Metriken auswaehlen"
+
+#: src/Admin/Settings.php
+msgid "Regenerate"
+msgstr "Neu generieren"
+
+#: src/Admin/Settings.php
+msgid "Use this token to authenticate Prometheus scrape requests."
+msgstr "Verwenden Sie diesen Token zur Authentifizierung von Prometheus-Abfragen."
+
+#: src/Admin/Settings.php
+msgid "Static Metrics"
+msgstr "Statische Metriken"
+
+#: src/Admin/Settings.php
+msgid "WordPress Info (version, PHP version, multisite)"
+msgstr "WordPress-Info (Version, PHP-Version, Multisite)"
+
+#: src/Admin/Settings.php
+msgid "Total Users by Role"
+msgstr "Benutzer nach Rolle"
+
+#: src/Admin/Settings.php
+msgid "Total Posts by Type and Status"
+msgstr "Beitraege nach Typ und Status"
+
+#: src/Admin/Settings.php
+msgid "Total Comments by Status"
+msgstr "Kommentare nach Status"
+
+#: src/Admin/Settings.php
+msgid "Total Plugins (active/inactive)"
+msgstr "Plugins (aktiv/inaktiv)"
+
+#: src/Admin/Settings.php
+msgid "Cron Events (scheduled tasks, overdue, next run)"
+msgstr "Cron-Ereignisse (geplante Aufgaben, ueberfaellig, naechste Ausfuehrung)"
+
+#: src/Admin/Settings.php
+msgid "Transients (total, expiring, expired)"
+msgstr "Transienten (gesamt, ablaufend, abgelaufen)"
+
+#: src/Admin/Settings.php
+msgid "Runtime Metrics"
+msgstr "Laufzeit-Metriken"
+
+#: src/Admin/Settings.php
+msgid "Runtime metrics track data across requests. Enable only what you need to minimize performance impact."
+msgstr "Laufzeit-Metriken erfassen Daten ueber Anfragen hinweg. Aktivieren Sie nur, was Sie benoetigen, um Auswirkungen auf die Leistung zu minimieren."
+
+#: src/Admin/Settings.php
+msgid "HTTP Requests Total (by method, status, endpoint)"
+msgstr "HTTP-Anfragen gesamt (nach Methode, Status, Endpunkt)"
+
+#: src/Admin/Settings.php
+msgid "HTTP Request Duration (histogram)"
+msgstr "HTTP-Anfragedauer (Histogramm)"
+
+#: src/Admin/Settings.php
+msgid "Database Queries Total (by endpoint)"
+msgstr "Datenbank-Abfragen gesamt (nach Endpunkt)"
+
+#: src/Admin/Settings.php
+msgid "WooCommerce Metrics"
+msgstr "WooCommerce-Metriken"
+
+#: src/Admin/Settings.php
+msgid "Metrics specific to WooCommerce stores. Only available when WooCommerce is active."
+msgstr "Metriken speziell fuer WooCommerce-Shops. Nur verfuegbar, wenn WooCommerce aktiv ist."
+
+#: src/Admin/Settings.php
+msgid "WooCommerce Products (by status and type)"
+msgstr "WooCommerce-Produkte (nach Status und Typ)"
+
+#: src/Admin/Settings.php
+msgid "WooCommerce Orders (by status)"
+msgstr "WooCommerce-Bestellungen (nach Status)"
+
+#: src/Admin/Settings.php
+msgid "WooCommerce Revenue (all time, today, month)"
+msgstr "WooCommerce-Umsatz (gesamt, heute, Monat)"
+
+#: src/Admin/Settings.php
+msgid "WooCommerce Customers (registered, guest)"
+msgstr "WooCommerce-Kunden (registriert, Gast)"
+
+#: src/Admin/Settings.php
+msgid "Prometheus Configuration"
+msgstr "Prometheus-Konfiguration"
+
+#: src/Admin/Settings.php
+msgid "Add the following to your prometheus.yml:"
+msgstr "Fuegen Sie Folgendes zu Ihrer prometheus.yml hinzu:"
+
+#: src/Admin/Settings.php
+msgid "Endpoint Information"
+msgstr "Endpunkt-Informationen"
+
+#: src/Admin/Settings.php
+msgid "Metrics URL"
+msgstr "Metriken-URL"
+
+#: src/Admin/Settings.php
+msgid "Testing the Endpoint"
+msgstr "Endpunkt testen"
+
+#: src/Admin/Settings.php
+msgid "You can test the endpoint using curl:"
+msgstr "Sie koennen den Endpunkt mit curl testen:"
+
+#: src/Admin/Settings.php
+msgid "Available Metrics"
+msgstr "Verfuegbare Metriken"
+
+#: src/Admin/Settings.php
+msgid "Metric"
+msgstr "Metrik"
+
+#: src/Admin/Settings.php
+msgid "Type"
+msgstr "Typ"
+
+#: src/Admin/Settings.php
+msgid "Description"
+msgstr "Beschreibung"
+
+#: src/Admin/Settings.php
+msgid "Gauge"
+msgstr "Gauge"
+
+#: src/Admin/Settings.php
+msgid "Counter"
+msgstr "Counter"
+
+#: src/Admin/Settings.php
+msgid "Histogram"
+msgstr "Histogramm"
+
+#: src/Admin/Settings.php
+msgid "WordPress installation info"
+msgstr "WordPress-Installationsinformationen"
+
+#: src/Admin/Settings.php
+msgid "Total users by role"
+msgstr "Benutzer gesamt nach Rolle"
+
+#: src/Admin/Settings.php
+msgid "Total posts by type and status"
+msgstr "Beitraege gesamt nach Typ und Status"
+
+#: src/Admin/Settings.php
+msgid "Total comments by status"
+msgstr "Kommentare gesamt nach Status"
+
+#: src/Admin/Settings.php
+msgid "Total plugins by status"
+msgstr "Plugins gesamt nach Status"
+
+#: src/Admin/Settings.php
+msgid "HTTP requests by method, status, endpoint"
+msgstr "HTTP-Anfragen nach Methode, Status, Endpunkt"
+
+#: src/Admin/Settings.php
+msgid "HTTP request duration distribution"
+msgstr "HTTP-Anfragedauer-Verteilung"
+
+#: src/Admin/Settings.php
+msgid "Database queries by endpoint"
+msgstr "Datenbank-Abfragen nach Endpunkt"
+
+#: src/Admin/Settings.php
+msgid "Scheduled cron events by hook"
+msgstr "Geplante Cron-Ereignisse nach Hook"
+
+#: src/Admin/Settings.php
+msgid "Number of overdue cron events"
+msgstr "Anzahl ueberfaelliger Cron-Ereignisse"
+
+#: src/Admin/Settings.php
+msgid "Unix timestamp of next scheduled cron"
+msgstr "Unix-Zeitstempel des naechsten geplanten Crons"
+
+#: src/Admin/Settings.php
+msgid "Total transients by type"
+msgstr "Transienten gesamt nach Typ"
+
+#: src/Admin/Settings.php
+msgid "WooCommerce products by status and type"
+msgstr "WooCommerce-Produkte nach Status und Typ"
+
+#: src/Admin/Settings.php
+msgid "WooCommerce orders by status"
+msgstr "WooCommerce-Bestellungen nach Status"
+
+#: src/Admin/Settings.php
+msgid "WooCommerce revenue by period"
+msgstr "WooCommerce-Umsatz nach Zeitraum"
+
+#: src/Admin/Settings.php
+msgid "WooCommerce customers by type"
+msgstr "WooCommerce-Kunden nach Typ"
+
+#: src/Admin/Settings.php
+msgid "Custom Metrics"
+msgstr "Benutzerdefinierte Metriken"
+
+#: src/Admin/Settings.php
+msgid "You can add custom metrics using the wp_prometheus_collect_metrics action:"
+msgstr "Sie koennen benutzerdefinierte Metriken mit der wp_prometheus_collect_metrics-Aktion hinzufuegen:"
+
+#: src/Plugin.php
 msgid "Settings"
 msgstr "Einstellungen"
 
 #. translators: 1: Required PHP version, 2: Current PHP version
-#: wp-prometheus.php:112
+#: wp-prometheus.php
 msgid "WP Prometheus requires PHP version %1$s or higher. You are running PHP %2$s."
 msgstr "WP Prometheus erfordert PHP-Version %1$s oder hoeher. Sie verwenden PHP %2$s."
 
 #. translators: 1: Required WordPress version, 2: Current WordPress version
-#: wp-prometheus.php:127
+#: wp-prometheus.php
 msgid "WP Prometheus requires WordPress version %1$s or higher. You are running WordPress %2$s."
 msgstr "WP Prometheus erfordert WordPress-Version %1$s oder hoeher. Sie verwenden WordPress %2$s."
 
-#: wp-prometheus.php:140
+#: wp-prometheus.php
 msgid "WP Prometheus requires Composer dependencies to be installed. Please run \"composer install\" in the plugin directory."
 msgstr "WP Prometheus erfordert installierte Composer-Abhaengigkeiten. Bitte fuehren Sie \"composer install\" im Plugin-Verzeichnis aus."
 
 #. translators: %s: Required PHP version
-#: wp-prometheus.php:156
+#: wp-prometheus.php
 msgid "WP Prometheus requires PHP version %s or higher."
 msgstr "WP Prometheus erfordert PHP-Version %s oder hoeher."

languages/wp-prometheus.pot

@@ -2,7 +2,7 @@
 # This file is distributed under the GPL v2 or later.
 msgid ""
 msgstr ""
-"Project-Id-Version: WP Prometheus 0.1.0\n"
+"Project-Id-Version: WP Prometheus 0.2.0\n"
 "Report-Msgid-Bugs-To: https://src.bundespruefstelle.ch/magdev/wp-prometheus/issues\n"
 "POT-Creation-Date: 2026-02-02T00:00:00+00:00\n"
 "MIME-Version: 1.0\n"
@@ -12,184 +12,347 @@ msgstr ""
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 
-#: src/Admin/Settings.php:40
+#: src/Admin/Settings.php
 msgid "Metrics Settings"
 msgstr ""
 
-#: src/Admin/Settings.php:41
+#: src/Admin/Settings.php
 msgid "Metrics"
 msgstr ""
 
-#: src/Admin/Settings.php:58
+#: src/Admin/Settings.php
-msgid "License Settings"
+msgid "License"
 msgstr ""
 
-#: src/Admin/Settings.php:65
+#: src/Admin/Settings.php
-msgid "Authentication"
+msgid "Help"
 msgstr ""
 
-#: src/Admin/Settings.php:73
+#: src/Admin/Settings.php
-msgid "Default Metrics"
-msgstr ""
-
-#: src/Admin/Settings.php:150
 msgid "License settings saved."
 msgstr ""
 
-#: src/Admin/Settings.php:195
+#: src/Admin/Settings.php
 msgid "License is active and valid."
 msgstr ""
 
-#: src/Admin/Settings.php:196
+#: src/Admin/Settings.php
 msgid "License is invalid."
 msgstr ""
 
-#: src/Admin/Settings.php:197
+#: src/Admin/Settings.php
 msgid "License has expired."
 msgstr ""
 
-#: src/Admin/Settings.php:198
+#: src/Admin/Settings.php
 msgid "License has been revoked."
 msgstr ""
 
-#: src/Admin/Settings.php:199
+#: src/Admin/Settings.php
 msgid "License is inactive."
 msgstr ""
 
-#: src/Admin/Settings.php:200
+#: src/Admin/Settings.php
 msgid "License has not been validated yet."
 msgstr ""
 
-#: src/Admin/Settings.php:201
+#: src/Admin/Settings.php
 msgid "License server is not configured."
 msgstr ""
 
+#: src/Admin/Settings.php
+msgid "Unknown status."
+msgstr ""
+
 #. translators: %s: Expiration date
-#: src/Admin/Settings.php:214
+#: src/Admin/Settings.php
 msgid "Expires: %s"
 msgstr ""
 
 #. translators: %s: Time ago
-#: src/Admin/Settings.php:225
+#: src/Admin/Settings.php
 msgid "Last checked: %s ago"
 msgstr ""
 
-#: src/Admin/Settings.php:239
+#: src/Admin/Settings.php
 msgid "License Server URL"
 msgstr ""
 
-#: src/Admin/Settings.php:249
+#: src/Admin/Settings.php
 msgid "License Key"
 msgstr ""
 
-#: src/Admin/Settings.php:259
+#: src/Admin/Settings.php
 msgid "Server Secret"
 msgstr ""
 
-#: src/Admin/Settings.php:264
+#: src/Admin/Settings.php
 msgid "Leave empty to keep existing."
 msgstr ""
 
-#: src/Admin/Settings.php:270
+#: src/Admin/Settings.php
 msgid "Save License Settings"
 msgstr ""
 
-#: src/Admin/Settings.php:272
+#: src/Admin/Settings.php
 msgid "Validate License"
 msgstr ""
 
-#: src/Admin/Settings.php:275
+#: src/Admin/Settings.php
 msgid "Activate License"
 msgstr ""
 
-#: src/Admin/Settings.php:301
+#: src/Admin/Settings.php
-msgid "Configure authentication for the /metrics endpoint."
+msgid "Authentication"
 msgstr ""
 
-#: src/Admin/Settings.php:310
+#: src/Admin/Settings.php
-msgid "Select which default metrics to expose."
-msgstr ""
-
-#: src/Admin/Settings.php:324
-msgid "Regenerate"
-msgstr ""
-
-#: src/Admin/Settings.php:327
-msgid "Use this token to authenticate Prometheus scrape requests."
-msgstr ""
-
-#: src/Admin/Settings.php:340
-msgid "WordPress Info (version, PHP version, multisite)"
-msgstr ""
-
-#: src/Admin/Settings.php:341
-msgid "Total Users by Role"
-msgstr ""
-
-#: src/Admin/Settings.php:342
-msgid "Total Posts by Type and Status"
-msgstr ""
-
-#: src/Admin/Settings.php:343
-msgid "Total Comments by Status"
-msgstr ""
-
-#: src/Admin/Settings.php:344
-msgid "Total Plugins (active/inactive)"
-msgstr ""
-
-#: src/Admin/Settings.php:345
-msgid "HTTP Requests Total (by method, status, endpoint)"
-msgstr ""
-
-#: src/Admin/Settings.php:346
-msgid "HTTP Request Duration (histogram)"
-msgstr ""
-
-#: src/Admin/Settings.php:347
-msgid "Database Queries Total (by endpoint)"
-msgstr ""
-
-#: src/Admin/Settings.php:369
-msgid "Prometheus Configuration"
-msgstr ""
-
-#: src/Admin/Settings.php:370
-msgid "Add the following to your prometheus.yml:"
-msgstr ""
-
-#. translators: %s: Endpoint URL
-#: src/Admin/Settings.php:385
-msgid "Metrics endpoint: %s"
-msgstr ""
-
-#: src/Admin/Settings.php:93
-msgid "Auth Token"
-msgstr ""
-
-#: src/Admin/Settings.php:101
 msgid "Enabled Metrics"
 msgstr ""
 
-#: src/Plugin.php:120
+#: src/Admin/Settings.php
+msgid "Configure authentication for the /metrics endpoint."
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Select which metrics to expose on the /metrics endpoint."
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Auth Token"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Select Metrics"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Regenerate"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Use this token to authenticate Prometheus scrape requests."
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Static Metrics"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "WordPress Info (version, PHP version, multisite)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Total Users by Role"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Total Posts by Type and Status"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Total Comments by Status"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Total Plugins (active/inactive)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Cron Events (scheduled tasks, overdue, next run)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Transients (total, expiring, expired)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Runtime Metrics"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Runtime metrics track data across requests. Enable only what you need to minimize performance impact."
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "HTTP Requests Total (by method, status, endpoint)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "HTTP Request Duration (histogram)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Database Queries Total (by endpoint)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "WooCommerce Metrics"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Metrics specific to WooCommerce stores. Only available when WooCommerce is active."
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "WooCommerce Products (by status and type)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "WooCommerce Orders (by status)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "WooCommerce Revenue (all time, today, month)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "WooCommerce Customers (registered, guest)"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Prometheus Configuration"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Add the following to your prometheus.yml:"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Endpoint Information"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Metrics URL"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Testing the Endpoint"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "You can test the endpoint using curl:"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Available Metrics"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Metric"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Type"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Description"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Gauge"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Counter"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Histogram"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "WordPress installation info"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Total users by role"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Total posts by type and status"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Total comments by status"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Total plugins by status"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "HTTP requests by method, status, endpoint"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "HTTP request duration distribution"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Database queries by endpoint"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Scheduled cron events by hook"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Number of overdue cron events"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Unix timestamp of next scheduled cron"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Total transients by type"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "WooCommerce products by status and type"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "WooCommerce orders by status"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "WooCommerce revenue by period"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "WooCommerce customers by type"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "Custom Metrics"
+msgstr ""
+
+#: src/Admin/Settings.php
+msgid "You can add custom metrics using the wp_prometheus_collect_metrics action:"
+msgstr ""
+
+#: src/Plugin.php
 msgid "Settings"
 msgstr ""
 
 #. translators: 1: Required PHP version, 2: Current PHP version
-#: wp-prometheus.php:112
+#: wp-prometheus.php
 msgid "WP Prometheus requires PHP version %1$s or higher. You are running PHP %2$s."
 msgstr ""
 
 #. translators: 1: Required WordPress version, 2: Current WordPress version
-#: wp-prometheus.php:127
+#: wp-prometheus.php
 msgid "WP Prometheus requires WordPress version %1$s or higher. You are running WordPress %2$s."
 msgstr ""
 
-#: wp-prometheus.php:140
+#: wp-prometheus.php
 msgid "WP Prometheus requires Composer dependencies to be installed. Please run \"composer install\" in the plugin directory."
 msgstr ""
 
 #. translators: %s: Required PHP version
-#: wp-prometheus.php:156
+#: wp-prometheus.php
 msgid "WP Prometheus requires PHP version %s or higher."
 msgstr ""

src/Admin/Settings.php

@@ -447,6 +447,46 @@ class Settings {
                     <td><?php esc_html_e( 'Counter', 'wp-prometheus' ); ?></td>
                     <td><?php esc_html_e( 'Database queries by endpoint', 'wp-prometheus' ); ?></td>
                 </tr>
+                <tr>
+                    <td><code>wordpress_cron_events_total</code></td>
+                    <td><?php esc_html_e( 'Gauge', 'wp-prometheus' ); ?></td>
+                    <td><?php esc_html_e( 'Scheduled cron events by hook', 'wp-prometheus' ); ?></td>
+                </tr>
+                <tr>
+                    <td><code>wordpress_cron_overdue_total</code></td>
+                    <td><?php esc_html_e( 'Gauge', 'wp-prometheus' ); ?></td>
+                    <td><?php esc_html_e( 'Number of overdue cron events', 'wp-prometheus' ); ?></td>
+                </tr>
+                <tr>
+                    <td><code>wordpress_cron_next_run_timestamp</code></td>
+                    <td><?php esc_html_e( 'Gauge', 'wp-prometheus' ); ?></td>
+                    <td><?php esc_html_e( 'Unix timestamp of next scheduled cron', 'wp-prometheus' ); ?></td>
+                </tr>
+                <tr>
+                    <td><code>wordpress_transients_total</code></td>
+                    <td><?php esc_html_e( 'Gauge', 'wp-prometheus' ); ?></td>
+                    <td><?php esc_html_e( 'Total transients by type', 'wp-prometheus' ); ?></td>
+                </tr>
+                <tr>
+                    <td><code>wordpress_woocommerce_products_total</code></td>
+                    <td><?php esc_html_e( 'Gauge', 'wp-prometheus' ); ?></td>
+                    <td><?php esc_html_e( 'WooCommerce products by status and type', 'wp-prometheus' ); ?></td>
+                </tr>
+                <tr>
+                    <td><code>wordpress_woocommerce_orders_total</code></td>
+                    <td><?php esc_html_e( 'Gauge', 'wp-prometheus' ); ?></td>
+                    <td><?php esc_html_e( 'WooCommerce orders by status', 'wp-prometheus' ); ?></td>
+                </tr>
+                <tr>
+                    <td><code>wordpress_woocommerce_revenue_total</code></td>
+                    <td><?php esc_html_e( 'Gauge', 'wp-prometheus' ); ?></td>
+                    <td><?php esc_html_e( 'WooCommerce revenue by period', 'wp-prometheus' ); ?></td>
+                </tr>
+                <tr>
+                    <td><code>wordpress_woocommerce_customers_total</code></td>
+                    <td><?php esc_html_e( 'Gauge', 'wp-prometheus' ); ?></td>
+                    <td><?php esc_html_e( 'WooCommerce customers by type', 'wp-prometheus' ); ?></td>
+                </tr>
             </tbody>
         </table>
 
@@ -514,6 +554,8 @@ class Settings {
             'wordpress_posts_total'    => __( 'Total Posts by Type and Status', 'wp-prometheus' ),
             'wordpress_comments_total' => __( 'Total Comments by Status', 'wp-prometheus' ),
             'wordpress_plugins_total'  => __( 'Total Plugins (active/inactive)', 'wp-prometheus' ),
+            'wordpress_cron_events_total'  => __( 'Cron Events (scheduled tasks, overdue, next run)', 'wp-prometheus' ),
+            'wordpress_transients_total'   => __( 'Transients (total, expiring, expired)', 'wp-prometheus' ),
         );
 
         $runtime_metrics = array(
@@ -522,6 +564,13 @@ class Settings {
             'wordpress_db_queries_total'              => __( 'Database Queries Total (by endpoint)', 'wp-prometheus' ),
         );
 
+        $woocommerce_metrics = array(
+            'wordpress_woocommerce_products_total'  => __( 'WooCommerce Products (by status and type)', 'wp-prometheus' ),
+            'wordpress_woocommerce_orders_total'    => __( 'WooCommerce Orders (by status)', 'wp-prometheus' ),
+            'wordpress_woocommerce_revenue_total'   => __( 'WooCommerce Revenue (all time, today, month)', 'wp-prometheus' ),
+            'wordpress_woocommerce_customers_total' => __( 'WooCommerce Customers (registered, guest)', 'wp-prometheus' ),
+        );
+
         echo '<fieldset>';
         echo '<legend class="screen-reader-text"><span>' . esc_html__( 'Static Metrics', 'wp-prometheus' ) . '</span></legend>';
         echo '<p><strong>' . esc_html__( 'Static Metrics', 'wp-prometheus' ) . '</strong></p>';
@@ -551,6 +600,23 @@ class Settings {
             <?php
         }
 
+        // WooCommerce metrics (only show if WooCommerce is active).
+        if ( class_exists( 'WooCommerce' ) ) {
+            echo '<br><p><strong>' . esc_html__( 'WooCommerce Metrics', 'wp-prometheus' ) . '</strong></p>';
+            echo '<p class="description" style="margin-bottom: 10px;">' . esc_html__( 'Metrics specific to WooCommerce stores. Only available when WooCommerce is active.', 'wp-prometheus' ) . '</p>';
+
+            foreach ( $woocommerce_metrics as $key => $label ) {
+                ?>
+                <label style="display: block; margin-bottom: 5px;">
+                    <input type="checkbox" name="wp_prometheus_enabled_metrics[]"
+                           value="<?php echo esc_attr( $key ); ?>"
+                           <?php checked( in_array( $key, $enabled, true ) ); ?>>
+                    <?php echo esc_html( $label ); ?>
+                </label>
+                <?php
+            }
+        }
+
         echo '</fieldset>';
     }
 

src/License/Manager.php

@@ -302,10 +302,47 @@ final class Manager {
      * @return bool
      */
     public static function is_license_valid(): bool {
+        // Bypass license check on localhost for development.
+        if ( self::is_localhost() ) {
+            return true;
+        }
+
         $status = get_option( self::OPTION_LICENSE_STATUS, 'unchecked' );
         return 'valid' === $status;
     }
 
+    /**
+     * Check if the current site is running on localhost.
+     *
+     * @return bool
+     */
+    public static function is_localhost(): bool {
+        $host = wp_parse_url( home_url(), PHP_URL_HOST );
+
+        $localhost_patterns = array(
+            'localhost',
+            '127.0.0.1',
+            '::1',
+        );
+
+        // Check exact matches.
+        if ( in_array( $host, $localhost_patterns, true ) ) {
+            return true;
+        }
+
+        // Check .localhost TLD (e.g., mysite.localhost).
+        if ( str_ends_with( $host, '.localhost' ) ) {
+            return true;
+        }
+
+        // Check .local TLD (common for local development).
+        if ( str_ends_with( $host, '.local' ) ) {
+            return true;
+        }
+
+        return false;
+    }
+
     /**
      * Get the license key.
      *
@@ -396,9 +433,16 @@ final class Manager {
      * @return void
      */
     private function update_cached_status( string $status, array $data = array() ): void {
+        $previous_status = get_option( self::OPTION_LICENSE_STATUS, 'unchecked' );
+
         update_option( self::OPTION_LICENSE_STATUS, $status );
         update_option( self::OPTION_LICENSE_DATA, $data );
         update_option( self::OPTION_LAST_CHECK, time() );
+
+        // Flush rewrite rules when license becomes valid to register the /metrics endpoint.
+        if ( 'valid' === $status && 'valid' !== $previous_status ) {
+            flush_rewrite_rules();
+        }
     }
 
     /**
@@ -465,6 +509,9 @@ final class Manager {
         update_option( self::OPTION_LICENSE_DATA, array() );
         delete_transient( self::TRANSIENT_LICENSE_CHECK );
 
+        // Flush rewrite rules to remove the /metrics endpoint.
+        flush_rewrite_rules();
+
         wp_send_json_success( array(
             'success' => true,
             'message' => __( 'License deactivated.', 'wp-prometheus' ),

src/Metrics/Collector.php

@@ -95,6 +95,21 @@ class Collector {
             $this->collect_plugins_total();
         }
 
+        // Collect cron metrics.
+        if ( in_array( 'wordpress_cron_events_total', $enabled_metrics, true ) ) {
+            $this->collect_cron_metrics();
+        }
+
+        // Collect transient metrics.
+        if ( in_array( 'wordpress_transients_total', $enabled_metrics, true ) ) {
+            $this->collect_transient_metrics();
+        }
+
+        // Collect WooCommerce metrics (if WooCommerce is active).
+        if ( $this->is_woocommerce_active() ) {
+            $this->collect_woocommerce_metrics( $enabled_metrics );
+        }
+
         // Collect runtime metrics (HTTP requests, DB queries).
         $this->collect_runtime_metrics( $enabled_metrics );
 
@@ -236,6 +251,375 @@ class Collector {
         $gauge->set( count( $all_plugins ) - count( $active_plugins ), array( 'inactive' ) );
     }
 
+    /**
+     * Collect cron metrics.
+     *
+     * @return void
+     */
+    private function collect_cron_metrics(): void {
+        $cron_array = _get_cron_array();
+
+        if ( ! is_array( $cron_array ) ) {
+            return;
+        }
+
+        // Events total gauge.
+        $events_gauge = $this->registry->getOrRegisterGauge(
+            $this->namespace,
+            'cron_events_total',
+            'Total number of scheduled cron events',
+            array( 'hook' )
+        );
+
+        // Count events by hook.
+        $hook_counts   = array();
+        $total_events  = 0;
+        $overdue_count = 0;
+        $current_time  = time();
+        $next_run      = PHP_INT_MAX;
+
+        foreach ( $cron_array as $timestamp => $cron ) {
+            if ( $timestamp < $next_run ) {
+                $next_run = $timestamp;
+            }
+
+            foreach ( $cron as $hook => $events ) {
+                $event_count = count( $events );
+                $total_events += $event_count;
+
+                if ( ! isset( $hook_counts[ $hook ] ) ) {
+                    $hook_counts[ $hook ] = 0;
+                }
+                $hook_counts[ $hook ] += $event_count;
+
+                // Check if overdue.
+                if ( $timestamp < $current_time ) {
+                    $overdue_count += $event_count;
+                }
+            }
+        }
+
+        // Set events by hook (limit to top 20 to avoid cardinality explosion).
+        arsort( $hook_counts );
+        $hook_counts = array_slice( $hook_counts, 0, 20, true );
+        foreach ( $hook_counts as $hook => $count ) {
+            $events_gauge->set( $count, array( $hook ) );
+        }
+
+        // Overdue events gauge.
+        $overdue_gauge = $this->registry->getOrRegisterGauge(
+            $this->namespace,
+            'cron_overdue_total',
+            'Number of overdue cron events',
+            array()
+        );
+        $overdue_gauge->set( $overdue_count, array() );
+
+        // Next run timestamp.
+        $next_run_gauge = $this->registry->getOrRegisterGauge(
+            $this->namespace,
+            'cron_next_run_timestamp',
+            'Unix timestamp of next scheduled cron event',
+            array()
+        );
+        if ( $next_run !== PHP_INT_MAX ) {
+            $next_run_gauge->set( $next_run, array() );
+        }
+    }
+
+    /**
+     * Collect transient metrics.
+     *
+     * @return void
+     */
+    private function collect_transient_metrics(): void {
+        global $wpdb;
+
+        // Count all transients.
+        // phpcs:ignore WordPress.DB.DirectDatabaseQuery
+        $transient_count = $wpdb->get_var(
+            "SELECT COUNT(*) FROM {$wpdb->options} WHERE option_name LIKE '_transient_%' AND option_name NOT LIKE '_transient_timeout_%'"
+        );
+
+        // Count transients with expiration.
+        // phpcs:ignore WordPress.DB.DirectDatabaseQuery
+        $expiring_count = $wpdb->get_var(
+            "SELECT COUNT(*) FROM {$wpdb->options} WHERE option_name LIKE '_transient_timeout_%'"
+        );
+
+        // Count expired transients.
+        // phpcs:ignore WordPress.DB.DirectDatabaseQuery
+        $expired_count = $wpdb->get_var(
+            $wpdb->prepare(
+                "SELECT COUNT(*) FROM {$wpdb->options} WHERE option_name LIKE '_transient_timeout_%%' AND option_value < %d",
+                time()
+            )
+        );
+
+        // Transients total gauge.
+        $transients_gauge = $this->registry->getOrRegisterGauge(
+            $this->namespace,
+            'transients_total',
+            'Total number of transients in database',
+            array( 'type' )
+        );
+
+        $transients_gauge->set( (int) $transient_count, array( 'total' ) );
+        $transients_gauge->set( (int) $expiring_count, array( 'with_expiration' ) );
+        $transients_gauge->set( (int) $transient_count - (int) $expiring_count, array( 'persistent' ) );
+        $transients_gauge->set( (int) $expired_count, array( 'expired' ) );
+
+        // Site transients (for multisite).
+        if ( is_multisite() ) {
+            // phpcs:ignore WordPress.DB.DirectDatabaseQuery
+            $site_transient_count = $wpdb->get_var(
+                "SELECT COUNT(*) FROM {$wpdb->sitemeta} WHERE meta_key LIKE '_site_transient_%' AND meta_key NOT LIKE '_site_transient_timeout_%'"
+            );
+
+            $transients_gauge->set( (int) $site_transient_count, array( 'site_transients' ) );
+        }
+    }
+
+    /**
+     * Check if WooCommerce is active.
+     *
+     * @return bool
+     */
+    private function is_woocommerce_active(): bool {
+        return class_exists( 'WooCommerce' );
+    }
+
+    /**
+     * Collect WooCommerce metrics.
+     *
+     * @param array $enabled_metrics List of enabled metrics.
+     * @return void
+     */
+    private function collect_woocommerce_metrics( array $enabled_metrics ): void {
+        // Products total.
+        if ( in_array( 'wordpress_woocommerce_products_total', $enabled_metrics, true ) ) {
+            $this->collect_woocommerce_products();
+        }
+
+        // Orders total.
+        if ( in_array( 'wordpress_woocommerce_orders_total', $enabled_metrics, true ) ) {
+            $this->collect_woocommerce_orders();
+        }
+
+        // Revenue.
+        if ( in_array( 'wordpress_woocommerce_revenue_total', $enabled_metrics, true ) ) {
+            $this->collect_woocommerce_revenue();
+        }
+
+        // Customers.
+        if ( in_array( 'wordpress_woocommerce_customers_total', $enabled_metrics, true ) ) {
+            $this->collect_woocommerce_customers();
+        }
+    }
+
+    /**
+     * Collect WooCommerce products metrics.
+     *
+     * @return void
+     */
+    private function collect_woocommerce_products(): void {
+        $gauge = $this->registry->getOrRegisterGauge(
+            $this->namespace,
+            'woocommerce_products_total',
+            'Total number of WooCommerce products by status and type',
+            array( 'status', 'type' )
+        );
+
+        // Get product counts by status.
+        $product_counts = wp_count_posts( 'product' );
+        $product_types  = wc_get_product_types();
+
+        foreach ( get_object_vars( $product_counts ) as $status => $count ) {
+            if ( (int) $count > 0 ) {
+                $gauge->set( (int) $count, array( $status, 'all' ) );
+            }
+        }
+
+        // Count by product type (for published products only).
+        foreach ( array_keys( $product_types ) as $type ) {
+            $args = array(
+                'status' => 'publish',
+                'type'   => $type,
+                'limit'  => -1,
+                'return' => 'ids',
+            );
+            $products = wc_get_products( $args );
+            $gauge->set( count( $products ), array( 'publish', $type ) );
+        }
+    }
+
+    /**
+     * Collect WooCommerce orders metrics.
+     *
+     * @return void
+     */
+    private function collect_woocommerce_orders(): void {
+        $gauge = $this->registry->getOrRegisterGauge(
+            $this->namespace,
+            'woocommerce_orders_total',
+            'Total number of WooCommerce orders by status',
+            array( 'status' )
+        );
+
+        // Get all registered order statuses and count each.
+        $statuses = wc_get_order_statuses();
+
+        foreach ( array_keys( $statuses ) as $status ) {
+            // Remove 'wc-' prefix for the label.
+            $status_label = str_replace( 'wc-', '', $status );
+            $count        = wc_orders_count( $status );
+            $gauge->set( (int) $count, array( $status_label ) );
+        }
+    }
+
+    /**
+     * Collect WooCommerce revenue metrics.
+     *
+     * @return void
+     */
+    private function collect_woocommerce_revenue(): void {
+        global $wpdb;
+
+        $gauge = $this->registry->getOrRegisterGauge(
+            $this->namespace,
+            'woocommerce_revenue_total',
+            'Total WooCommerce revenue',
+            array( 'period', 'currency' )
+        );
+
+        $currency = get_woocommerce_currency();
+
+        // Check if HPOS (High-Performance Order Storage) is enabled.
+        $hpos_enabled = class_exists( '\Automattic\WooCommerce\Utilities\OrderUtil' )
+            && \Automattic\WooCommerce\Utilities\OrderUtil::custom_orders_table_usage_is_enabled();
+
+        if ( $hpos_enabled ) {
+            $orders_table = $wpdb->prefix . 'wc_orders';
+
+            // Total revenue (all time) - completed and processing orders.
+            // phpcs:ignore WordPress.DB.DirectDatabaseQuery
+            $total_revenue = $wpdb->get_var(
+                "SELECT SUM(total_amount) FROM {$orders_table} WHERE status IN ('wc-completed', 'wc-processing')"
+            );
+
+            // Today's revenue.
+            // phpcs:ignore WordPress.DB.DirectDatabaseQuery
+            $today_revenue = $wpdb->get_var(
+                $wpdb->prepare(
+                    "SELECT SUM(total_amount) FROM {$orders_table} WHERE status IN ('wc-completed', 'wc-processing') AND DATE(date_created_gmt) = %s",
+                    gmdate( 'Y-m-d' )
+                )
+            );
+
+            // This month's revenue.
+            // phpcs:ignore WordPress.DB.DirectDatabaseQuery
+            $month_revenue = $wpdb->get_var(
+                $wpdb->prepare(
+                    "SELECT SUM(total_amount) FROM {$orders_table} WHERE status IN ('wc-completed', 'wc-processing') AND YEAR(date_created_gmt) = %d AND MONTH(date_created_gmt) = %d",
+                    gmdate( 'Y' ),
+                    gmdate( 'm' )
+                )
+            );
+        } else {
+            // Legacy post-based orders.
+            // phpcs:ignore WordPress.DB.DirectDatabaseQuery
+            $total_revenue = $wpdb->get_var(
+                "SELECT SUM(meta_value) FROM {$wpdb->postmeta} pm
+                JOIN {$wpdb->posts} p ON p.ID = pm.post_id
+                WHERE pm.meta_key = '_order_total'
+                AND p.post_type = 'shop_order'
+                AND p.post_status IN ('wc-completed', 'wc-processing')"
+            );
+
+            // Today's revenue.
+            // phpcs:ignore WordPress.DB.DirectDatabaseQuery
+            $today_revenue = $wpdb->get_var(
+                $wpdb->prepare(
+                    "SELECT SUM(meta_value) FROM {$wpdb->postmeta} pm
+                    JOIN {$wpdb->posts} p ON p.ID = pm.post_id
+                    WHERE pm.meta_key = '_order_total'
+                    AND p.post_type = 'shop_order'
+                    AND p.post_status IN ('wc-completed', 'wc-processing')
+                    AND DATE(p.post_date_gmt) = %s",
+                    gmdate( 'Y-m-d' )
+                )
+            );
+
+            // This month's revenue.
+            // phpcs:ignore WordPress.DB.DirectDatabaseQuery
+            $month_revenue = $wpdb->get_var(
+                $wpdb->prepare(
+                    "SELECT SUM(meta_value) FROM {$wpdb->postmeta} pm
+                    JOIN {$wpdb->posts} p ON p.ID = pm.post_id
+                    WHERE pm.meta_key = '_order_total'
+                    AND p.post_type = 'shop_order'
+                    AND p.post_status IN ('wc-completed', 'wc-processing')
+                    AND YEAR(p.post_date_gmt) = %d
+                    AND MONTH(p.post_date_gmt) = %d",
+                    gmdate( 'Y' ),
+                    gmdate( 'm' )
+                )
+            );
+        }
+
+        $gauge->set( (float) ( $total_revenue ?? 0 ), array( 'all_time', $currency ) );
+        $gauge->set( (float) ( $today_revenue ?? 0 ), array( 'today', $currency ) );
+        $gauge->set( (float) ( $month_revenue ?? 0 ), array( 'month', $currency ) );
+    }
+
+    /**
+     * Collect WooCommerce customers metrics.
+     *
+     * @return void
+     */
+    private function collect_woocommerce_customers(): void {
+        $gauge = $this->registry->getOrRegisterGauge(
+            $this->namespace,
+            'woocommerce_customers_total',
+            'Total number of WooCommerce customers',
+            array( 'type' )
+        );
+
+        // Count users with customer role.
+        $customer_count = count_users();
+        $customers      = $customer_count['avail_roles']['customer'] ?? 0;
+
+        $gauge->set( $customers, array( 'registered' ) );
+
+        // Count guest orders (orders without user_id).
+        global $wpdb;
+
+        // Check if HPOS is enabled.
+        $hpos_enabled = class_exists( '\Automattic\WooCommerce\Utilities\OrderUtil' )
+            && \Automattic\WooCommerce\Utilities\OrderUtil::custom_orders_table_usage_is_enabled();
+
+        if ( $hpos_enabled ) {
+            $orders_table = $wpdb->prefix . 'wc_orders';
+
+            // phpcs:ignore WordPress.DB.DirectDatabaseQuery
+            $guest_orders = $wpdb->get_var(
+                "SELECT COUNT(DISTINCT billing_email) FROM {$orders_table} WHERE customer_id = 0 AND billing_email != ''"
+            );
+        } else {
+            // phpcs:ignore WordPress.DB.DirectDatabaseQuery
+            $guest_orders = $wpdb->get_var(
+                "SELECT COUNT(DISTINCT pm.meta_value) FROM {$wpdb->postmeta} pm
+                JOIN {$wpdb->posts} p ON p.ID = pm.post_id
+                LEFT JOIN {$wpdb->postmeta} pm2 ON pm2.post_id = p.ID AND pm2.meta_key = '_customer_user'
+                WHERE pm.meta_key = '_billing_email'
+                AND p.post_type = 'shop_order'
+                AND (pm2.meta_value = '0' OR pm2.meta_value IS NULL)"
+            );
+        }
+
+        $gauge->set( (int) $guest_orders, array( 'guest' ) );
+    }
+
     /**
      * Collect runtime metrics from stored data.
      *

wp-prometheus.php

@@ -3,7 +3,7 @@
  * Plugin Name: WP Prometheus
  * Plugin URI: https://src.bundespruefstelle.ch/magdev/wp-prometheus
  * Description: Prometheus metrics endpoint for WordPress with extensible hooks for custom metrics.
- * Version: 0.1.1
+ * Version: 0.2.2
  * Requires at least: 6.4
  * Requires PHP: 8.3
  * Author: Marco Graetsch
@@ -26,7 +26,7 @@ if ( ! defined( 'ABSPATH' ) ) {
  *
  * @var string
  */
-define( 'WP_PROMETHEUS_VERSION', '0.1.1' );
+define( 'WP_PROMETHEUS_VERSION', '0.2.2' );
 
 /**
  * Plugin file path.