Add WordPress auto-update functionality (v0.6.0)

- Add UpdateController REST API endpoint for serving update info to licensed plugins
- Add PluginUpdateChecker singleton for client-side update checking
- Hook into WordPress native plugin update system (pre_set_site_transient_update_plugins, plugins_api)
- Add Auto-Updates settings subtab with enable/disable and check frequency options
- Add authentication headers for secure download requests
- Support configurable cache TTL for update checks (default 12 hours)
- Document /update-check endpoint in OpenAPI specification
- Update German translations

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

CHANGELOG.md

@@ -7,6 +7,85 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.5.15] - 2026-01-27
+
+### Fixed
+
+- Fixed tab rendering bug in WooCommerce product edit page when switching to licensed or licensed-variable product types
+- Simplified JavaScript to avoid conflicts with WooCommerce's native show/hide logic
+- Removed conflicting CSS rule for `.hide_if_licensed` that was causing layout issues
+- License Settings tab now uses CSS class toggle (`.wclp-active`) instead of jQuery `.show()/.hide()` for proper display
+- Variations tab now properly shows for licensed-variable products via `woocommerce_product_data_tabs` filter
+
+## [0.5.14] - 2026-01-27
+
+### Fixed
+
+- **CRITICAL:** Fixed Product Versions meta box not appearing for licensed-variable products
+- Product Versions meta box now always added to product pages, visibility controlled via CSS/JavaScript
+- Added `Installer::registerProductTypes()` to create product type terms in the `product_type` taxonomy
+- Product type terms are now ensured to exist on `woocommerce_init` hook for existing installations
+- Fixed License Settings tab and Product Versions visibility toggling when changing product types
+
+## [0.5.13] - 2026-01-27
+
+### Fixed
+
+- **CRITICAL:** Fixed licenses not showing in admin order form for licensed-variable products
+- `OrderLicenseController` now uses `LicenseManager::isLicensedProduct()` for consistent product type detection
+- Fixed expected licenses calculation for variable product orders
+- Fixed manual license generation from admin order page for variable products
+
+### Changed
+
+- Removed debug logging from all source files (PHP and JavaScript)
+- Cleaned up checkout blocks integration, Store API extension, and checkout controller
+
+## [0.5.12] - 2026-01-27
+
+### Fixed
+
+- **CRITICAL:** Fixed stock indicator ("1 in stock") appearing in cart for licensed variable product variations
+- Override `get_children()` with direct SQL query to bypass WooCommerce's `is_type('variable')` check
+- Override `get_variation_attributes()` to properly load taxonomy attribute terms
+- Override `get_variation_prices()` to prevent fatal error with null `$this->prices_array`
+- Override `get_available_variations()` with empty `availability_html` for variations
+- Added `is_type()` override to return true for both 'licensed-variable' and 'variable' type checks
+- Added multiple stock-related filters: `woocommerce_get_availability_text`, `woocommerce_product_get_stock_quantity`, `woocommerce_product_variation_get_stock_quantity`
+- Improved `isLicensedProductOrVariation()` check using `WC_Product_Factory::get_product_type()` for reliable parent type detection
+
+### Changed
+
+- `LicensedProductVariation` now includes `get_availability()`, `managing_stock()`, and `is_purchasable()` overrides
+- Simplified `isVirtual()` to use shared `isLicensedProductOrVariation()` helper
+
+## [0.5.11] - 2026-01-27
+
+### Fixed
+
+- **CRITICAL:** Fixed "sold out" message on licensed variable products by correcting `is_purchasable()` method
+- Variable products don't have a direct price - `is_purchasable()` now delegates to parent `WC_Product_Variable` class
+- Fixed variation class detection by using product ID parameter instead of unreliable global `$post`
+- Product class filter now properly accepts all 4 WooCommerce filter parameters for reliable variation detection
+
+## [0.5.10] - 2026-01-27
+
+### Fixed
+
+- Fixed licensed variable products not showing variations even when attributes are defined
+- Re-load product via `wc_get_product()` to ensure correct class instance is used
+- Removed overly strict type check that was preventing variations from displaying
+- Now mirrors WooCommerce's standard `woocommerce_variable_add_to_cart()` implementation
+
+## [0.5.9] - 2026-01-27
+
+### Fixed
+
+- Fixed frontend error on licensed variable products when no attributes are defined
+- Added null checks for `get_variation_attributes()`, `get_available_variations()`, and `get_default_attributes()`
+- Show informative message instead of error when product has no variations configured
+- Changed product type check from `instanceof` to `is_type()` for better compatibility
+
 ## [0.5.8] - 2026-01-27
 
 ### Fixed

CLAUDE.md

@@ -1495,3 +1495,164 @@ Removed redundant "Default" prefix from setting labels on the Default Settings p
 - Created release package: `releases/wc-licensed-product-0.5.7.zip` (856 KB)
 - SHA256: `ceb4d57598f576f4f172153ff80df8c180ecd4dca873cf109327fc5ac718930f`
 - Tagged as `v0.5.7` and pushed to `main` branch
+
+### 2026-01-27 - Version 0.5.8-0.5.11 - Licensed Variable Product Fixes
+
+**Overview:**
+
+Series of bug fixes for licensed variable products that were showing frontend errors and not displaying properly.
+
+**v0.5.8 - Initial Fix:**
+
+- Fixed critical error on frontend product pages for licensed variable products
+- Variable product add-to-cart template now passes required variables (`available_variations`, `attributes`, `selected_attributes`)
+- Added JavaScript event listeners for WooCommerce AJAX events to maintain admin variants tab visibility
+
+**v0.5.9 - Null Checks:**
+
+- Added null checks for `get_variation_attributes()`, `get_available_variations()`, and `get_default_attributes()`
+- Show informative message instead of error when product has no variations configured
+- Changed product type check from `instanceof` to `is_type()` for better compatibility
+
+**v0.5.10 - Product Loading:**
+
+- Re-load product via `wc_get_product()` to ensure correct class instance is used
+- Removed overly strict type check that was preventing variations from displaying
+
+**v0.5.11 - Final Fix:**
+
+- **CRITICAL:** Fixed "sold out" message on licensed variable products
+- `LicensedVariableProduct::is_purchasable()` now delegates to parent `WC_Product_Variable` class (variable products don't have direct prices - only variations do)
+- Fixed `getProductClass()` filter to accept all 4 WooCommerce parameters and use product_id for reliable variation parent detection
+- Added fallback to global `$post` when product_id not available
+
+**Modified files:**
+
+- `src/Product/LicensedProductType.php` - Fixed `variableAddToCartTemplate()` and `getProductClass()` methods
+- `src/Product/LicensedVariableProduct.php` - Fixed `is_purchasable()` method
+- `wc-licensed-product.php` - Version bumps
+
+**Technical notes:**
+
+- WooCommerce `woocommerce_product_class` filter has 4 parameters: `$className`, `$productType`, `$postType`, `$productId`
+- Variable products delegate purchasability to their variations - checking `get_price()` on parent is incorrect
+- Variation parent detection must use product ID, not global `$post` which may not be set on frontend
+
+**Release v0.5.11:**
+
+- Created release package: `releases/wc-licensed-product-0.5.11.zip` (857 KB)
+- SHA256: `32571178bfa8f0d0a03ed05b498d5f9b3c860104393a96732e86a03b6de298d2`
+- Committed to `dev` branch
+
+### 2026-01-27 - Version 0.5.12 - Stock Display Fix
+
+**Overview:**
+
+Fixed stock indicator appearing in cart for licensed variable product variations.
+
+**Bug Fix:**
+
+- Fixed "1 in stock" message appearing in cart for licensed variable product variations
+- Added multiple WooCommerce filter overrides to suppress stock display
+
+**Modified files:**
+
+- `src/Product/LicensedVariableProduct.php` - Override `get_children()`, `get_variation_attributes()`, `get_variation_prices()`, `get_available_variations()`, `is_type()`
+- `src/Product/LicensedProductVariation.php` - Added `get_availability()`, `managing_stock()`, `is_purchasable()` overrides
+- `src/Product/LicensedProductType.php` - Added stock-related filter hooks
+
+**Technical notes:**
+
+- `get_children()` uses direct SQL query to bypass WooCommerce's `is_type('variable')` check
+- `is_type()` override returns true for both 'licensed-variable' and 'variable' type checks
+- Stock filters: `woocommerce_get_availability_text`, `woocommerce_product_get_stock_quantity`, `woocommerce_product_variation_get_stock_quantity`
+
+### 2026-01-27 - Version 0.5.13 - Admin Order License Display Fix
+
+**Overview:**
+
+Fixed licenses not showing in admin order form for licensed-variable products and removed debug logging.
+
+**Bug Fixes:**
+
+- **CRITICAL:** Fixed licenses not appearing in admin order form for orders containing licensed-variable products
+- `OrderLicenseController` now uses `LicenseManager::isLicensedProduct()` for consistent product type detection across 4 locations
+- Fixed expected licenses calculation for variable product orders
+- Fixed manual license generation from admin order page for variable products
+
+**Cleanup:**
+
+- Removed all debug `error_log()` calls from PHP source files
+- Removed all debug `console.log()` calls from JavaScript files
+- Files cleaned: Plugin.php, CheckoutBlocksIntegration.php, StoreApiExtension.php, CheckoutController.php, checkout-blocks.js
+
+**Modified files:**
+
+- `src/Admin/OrderLicenseController.php` - Use `isLicensedProduct()` in 4 locations
+- `src/Plugin.php` - Remove debug logging
+- `src/Checkout/CheckoutBlocksIntegration.php` - Remove debug logging
+- `src/Checkout/StoreApiExtension.php` - Remove debug logging
+- `src/Checkout/CheckoutController.php` - Remove debug logging
+- `assets/js/checkout-blocks.js` - Remove debug logging
+
+**Release v0.5.13:**
+
+- Created release package: `releases/wc-licensed-product-0.5.13.zip` (1.0 MB)
+- SHA256: `814710ad899529d0015494e4b332eace7d8e55aeda381fdf61f99274c0bf910c`
+- Committed to `dev` branch
+
+### 2026-01-27 - Version 0.5.14 - Product Versions Meta Box Fix
+
+**Overview:**
+
+Fixed Product Versions meta box not appearing for licensed-variable products in admin.
+
+**Bug Fixes:**
+
+- Product Versions meta box now always added to product pages, visibility controlled via CSS/JavaScript
+- Added `Installer::registerProductTypes()` to create product type terms in the `product_type` taxonomy
+- Product type terms are now ensured to exist on `woocommerce_init` hook for existing installations
+
+**Modified files:**
+
+- `src/Admin/VersionAdminController.php` - Simplified `addVersionsMetaBox()` to always add meta box
+- `src/Installer.php` - Added `registerProductTypes()` method
+- `src/Product/LicensedProductType.php` - Added `ensureProductTypeTermsExist()` hook
+
+**Technical notes:**
+
+- WooCommerce's `WC_Product_Factory::get_product_type()` requires product type terms to exist in the `product_type` taxonomy
+- Meta box visibility is controlled via JavaScript based on selected product type
+- Taxonomy terms are registered on `woocommerce_init` hook to ensure WooCommerce is fully loaded
+
+### 2026-01-27 - Version 0.5.15 - Tab Rendering Fix
+
+**Overview:**
+
+Fixed tab rendering bug in WooCommerce product edit page when switching to licensed or licensed-variable product types.
+
+**Bug Fixes:**
+
+- Fixed tab rendering issue where License Settings and Variations tabs appeared shifted/overlapping
+- Simplified JavaScript to avoid conflicts with WooCommerce's native show/hide logic
+- Removed conflicting CSS rule for `.hide_if_licensed` that was causing layout issues
+- License Settings tab now uses CSS class toggle (`.wclp-active`) instead of jQuery `.show()/.hide()`
+- Variations tab properly shows for licensed-variable products via `woocommerce_product_data_tabs` filter
+
+**Modified files:**
+
+- `src/Product/LicensedProductType.php` - Simplified `toggleOurElements()` JavaScript function, added `show_if_licensed-variable` class to variations tab
+- `assets/css/admin.css` - Removed `.hide_if_licensed` rule, updated tab visibility CSS to target `li.licensed_product_options`
+
+**Technical notes:**
+
+- jQuery's `.show()` sets `display: block` which can break `<li>` element layouts in tab lists
+- Using CSS class toggle (`addClass/removeClass`) preserves proper display values
+- WooCommerce product data tabs use class pattern `{tab_key}_options` (e.g., `licensed_product_options`)
+- The `woocommerce_product_data_tabs` filter allows adding classes to existing tabs like variations
+
+**Release v0.5.15:**
+
+- Created release package: `releases/wc-licensed-product-0.5.15.zip` (862 KB)
+- SHA256: `47407de49bae4c649644af64e87b44b32fb30eeb2d50890ff8c4bbb741059278`
+- Committed to `dev` branch

assets/css/admin.css

@@ -50,16 +50,21 @@ code.file-hash {
     color: #666;
 }
 
-/* License Product Tab - Hidden by default, shown via JS based on product type */
+/* License Settings Tab - Hidden by default, shown via JS based on product type */
-#woocommerce-product-data .show_if_licensed,
+/* WooCommerce creates tab with class: {tab_key}_options (licensed_product_options) */
-#woocommerce-product-data .show_if_licensed-variable {
+#woocommerce-product-data ul.wc-tabs li.licensed_product_options {
     display: none;
 }
 
-#woocommerce-product-data .hide_if_licensed {
+/* When shown, restore proper display for tab list items */
-    display: none !important;
+#woocommerce-product-data ul.wc-tabs li.licensed_product_options.wclp-active {
+    display: block;
 }
 
+/* Variations tab visibility for licensed-variable is handled by WooCommerce */
+/* We add show_if_licensed-variable class to the variations tab via PHP filter */
+
+
 /* Action Buttons */
 .wp-list-table .button-link-delete {
     color: #a00;

assets/js/checkout-blocks.js

@@ -18,12 +18,25 @@
     }
 
     const { getSetting } = wc.wcSettings;
-    const { createElement, useState } = wp.element;
+    const { createElement, useState, useEffect, useCallback } = wp.element;
     const { TextControl } = wp.components;
     const { __ } = wp.i18n;
 
     // Get available exports from blocksCheckout
-    const { ExperimentalOrderMeta } = wc.blocksCheckout;
+    const { ExperimentalOrderMeta, extensionCartUpdate } = wc.blocksCheckout;
+
+    // Debounce function for API updates
+    function debounce(func, wait) {
+        let timeout;
+        return function executedFunction(...args) {
+            const later = () => {
+                clearTimeout(timeout);
+                func(...args);
+            };
+            clearTimeout(timeout);
+            timeout = setTimeout(later, wait);
+        };
+    }
 
     // Get settings from PHP
     const settings = getSetting('wc-licensed-product_data', {});
@@ -59,6 +72,23 @@
         const [domain, setDomain] = useState('');
         const [error, setError] = useState('');
 
+        // Debounced API update function
+        const updateStoreApi = useCallback(
+            debounce((normalizedDomain) => {
+                if (extensionCartUpdate) {
+                    extensionCartUpdate({
+                        namespace: 'wc-licensed-product',
+                        data: {
+                            licensed_product_domain: normalizedDomain,
+                        },
+                    }).catch(err => {
+                        console.error('[WCLP] Store API update error:', err);
+                    });
+                }
+            }, 500),
+            []
+        );
+
         const handleChange = (value) => {
             const normalized = normalizeDomain(value);
             setDomain(normalized);
@@ -67,9 +97,11 @@
                 setError(settings.validationError || __('Please enter a valid domain.', 'wc-licensed-product'));
             } else {
                 setError('');
+                // Update Store API when valid
+                updateStoreApi(normalized);
             }
 
-            // Store in hidden input for form submission
+            // Store in hidden input for form submission (fallback)
             const hiddenInput = document.getElementById('wclp-domain-hidden');
             if (hiddenInput) {
                 hiddenInput.value = normalized;
@@ -135,6 +167,23 @@
         });
         const [errors, setErrors] = useState({});
 
+        // Debounced API update function
+        const updateStoreApi = useCallback(
+            debounce((domainsData) => {
+                if (extensionCartUpdate) {
+                    extensionCartUpdate({
+                        namespace: 'wc-licensed-product',
+                        data: {
+                            licensed_product_domains: domainsData,
+                        },
+                    }).catch(err => {
+                        console.error('[WCLP] Store API update error:', err);
+                    });
+                }
+            }, 500),
+            []
+        );
+
         if (!products.length) {
             return null;
         }
@@ -174,7 +223,7 @@
 
             setErrors(newErrors);
 
-            // Update hidden field with variation support
+            // Build domain data for Store API
             const data = products.map(p => {
                 const pKey = getProductKey(p);
                 const doms = newDomains[pKey] || [];
@@ -188,6 +237,10 @@
                 return entry;
             }).filter(item => item.domains.length > 0);
 
+            // Update Store API
+            updateStoreApi(data);
+
+            // Update hidden field (fallback)
             const hiddenInput = document.getElementById('wclp-domains-hidden');
             if (hiddenInput) {
                 hiddenInput.value = JSON.stringify(data);
@@ -273,11 +326,13 @@
 
         if (registerPlugin) {
             registerPlugin('wc-licensed-product-domain-fields', {
-                render: () => createElement(
+                render: () => {
-                    ExperimentalOrderMeta,
+                    return createElement(
-                    {},
+                        ExperimentalOrderMeta,
-                    createElement(LicenseDomainsBlock)
+                        {},
-                ),
+                        createElement(LicenseDomainsBlock)
+                    );
+                },
                 scope: 'woocommerce-checkout',
             });
         }
@@ -379,6 +434,68 @@
         } else {
             insertionPoint.appendChild(container);
         }
+
+        // Add event listeners to sync with Store API
+        const debouncedUpdate = debounce(function() {
+            if (!extensionCartUpdate) {
+                return;
+            }
+
+            if (settings.isMultiDomainEnabled && settings.licensedProducts) {
+                // Collect multi-domain data
+                const domainsData = settings.licensedProducts.map(function(product) {
+                    const productKey = product.variation_id && product.variation_id > 0
+                        ? product.product_id + '_' + product.variation_id
+                        : String(product.product_id);
+
+                    const domains = [];
+                    for (let i = 0; i < product.quantity; i++) {
+                        const input = container.querySelector('input[name="licensed_domains[' + productKey + '][' + i + ']"]');
+                        if (input && input.value.trim()) {
+                            domains.push(normalizeDomain(input.value));
+                        }
+                    }
+
+                    const entry = {
+                        product_id: product.product_id,
+                        domains: domains,
+                    };
+                    if (product.variation_id && product.variation_id > 0) {
+                        entry.variation_id = product.variation_id;
+                    }
+                    return entry;
+                }).filter(function(item) { return item.domains.length > 0; });
+
+                extensionCartUpdate({
+                    namespace: 'wc-licensed-product',
+                    data: {
+                        licensed_product_domains: domainsData,
+                    },
+                }).catch(function(err) {
+                    console.error('[WCLP] Store API update error:', err);
+                });
+            } else {
+                // Single domain
+                const input = container.querySelector('input[name="licensed_product_domain"]');
+                if (input) {
+                    const domain = normalizeDomain(input.value);
+                    extensionCartUpdate({
+                        namespace: 'wc-licensed-product',
+                        data: {
+                            licensed_product_domain: domain,
+                        },
+                    }).catch(function(err) {
+                        console.error('[WCLP] Store API update error:', err);
+                    });
+                }
+            }
+        }, 500);
+
+        // Attach event listeners to all domain inputs
+        container.querySelectorAll('input[type="text"]').forEach(function(input) {
+            input.addEventListener('input', debouncedUpdate);
+            input.addEventListener('change', debouncedUpdate);
+        });
     }, 2000);
 
 })();

languages/wc-licensed-product-de_CH.po

@@ -3,10 +3,10 @@
 # This file is distributed under the GPL-2.0-or-later.
 msgid ""
 msgstr ""
-"Project-Id-Version: WC Licensed Product 0.5.0\n"
+"Project-Id-Version: WC Licensed Product 0.6.0\n"
 "Report-Msgid-Bugs-To: magdev3.0@gmail.com\n"
-"POT-Creation-Date: 2026-01-27 13:34+0100\n"
+"POT-Creation-Date: 2026-01-27 18:00+0100\n"
-"PO-Revision-Date: 2026-01-25T18:30:00+00:00\n"
+"PO-Revision-Date: 2026-01-27T18:00:00+00:00\n"
 "Last-Translator: Marco Graetsch <magdev3.0@gmail.com>\n"
 "Language-Team: German (Switzerland) <de_CH@li.org>\n"
 "Language: de_CH\n"
@@ -311,10 +311,10 @@ msgstr "Speichern"
 #: src/Admin/DashboardWidgetController.php:136
 #: src/Admin/OrderLicenseController.php:260
 #: src/Admin/SettingsController.php:192
-#: src/Product/LicensedProductVariation.php:139
+#: src/Product/LicensedProductVariation.php:194
-#: src/Product/LicensedProductType.php:136
+#: src/Product/LicensedProductType.php:164
-#: src/Product/LicensedProductType.php:184
+#: src/Product/LicensedProductType.php:212
-#: src/Product/LicensedProductType.php:403
+#: src/Product/LicensedProductType.php:553
 #: src/Frontend/AccountController.php:286
 msgid "Lifetime"
 msgstr "Lebenslang"
@@ -492,6 +492,7 @@ msgstr "Lizenz erfolgreich verlängert."
 msgid "License set to lifetime successfully."
 msgstr "Lizenz erfolgreich auf lebenslang gesetzt."
 
+#. translators: %d: number of licenses
 #: src/Admin/AdminController.php:1106
 #, php-format
 msgid "%d license activated."
@@ -499,6 +500,7 @@ msgid_plural "%d licenses activated."
 msgstr[0] "%d Lizenz aktiviert."
 msgstr[1] "%d Lizenzen aktiviert."
 
+#. translators: %d: number of licenses
 #: src/Admin/AdminController.php:1114
 #, php-format
 msgid "%d license deactivated."
@@ -506,6 +508,7 @@ msgid_plural "%d licenses deactivated."
 msgstr[0] "%d Lizenz deaktiviert."
 msgstr[1] "%d Lizenzen deaktiviert."
 
+#. translators: %d: number of licenses
 #: src/Admin/AdminController.php:1122
 #, php-format
 msgid "%d license revoked."
@@ -513,6 +516,7 @@ msgid_plural "%d licenses revoked."
 msgstr[0] "%d Lizenz widerrufen."
 msgstr[1] "%d Lizenzen widerrufen."
 
+#. translators: %d: number of licenses
 #: src/Admin/AdminController.php:1130
 #, php-format
 msgid "%d license deleted."
@@ -520,6 +524,7 @@ msgid_plural "%d licenses deleted."
 msgstr[0] "%d Lizenz gelöscht."
 msgstr[1] "%d Lizenzen gelöscht."
 
+#. translators: %d: number of licenses
 #: src/Admin/AdminController.php:1138
 #, php-format
 msgid "%d license extended."
@@ -541,6 +546,7 @@ msgstr ""
 msgid "No licenses to export."
 msgstr "Keine Lizenzen zum Exportieren."
 
+#. translators: %d: number of licenses imported
 #: src/Admin/AdminController.php:1159
 #, php-format
 msgid "%d license imported."
@@ -548,6 +554,7 @@ msgid_plural "%d licenses imported."
 msgstr[0] "%d Lizenz importiert."
 msgstr[1] "%d Lizenzen importiert."
 
+#. translators: %d: number of licenses updated
 #: src/Admin/AdminController.php:1166
 #, php-format
 msgid "%d updated."
@@ -555,6 +562,7 @@ msgid_plural "%d updated."
 msgstr[0] "%d aktualisiert."
 msgstr[1] "%d aktualisiert."
 
+#. translators: %d: number of licenses skipped
 #: src/Admin/AdminController.php:1174
 #, php-format
 msgid "%d skipped."
@@ -562,6 +570,7 @@ msgid_plural "%d skipped."
 msgstr[0] "%d übersprungen."
 msgstr[1] "%d übersprungen."
 
+#. translators: %d: number of errors
 #: src/Admin/AdminController.php:1182
 #, php-format
 msgid "%d error."
@@ -1020,6 +1029,7 @@ msgstr "Domain bearbeiten"
 msgid "View in Licenses"
 msgstr "In Lizenzen anzeigen"
 
+#. translators: %s: Link to licenses page
 #: src/Admin/OrderLicenseController.php:280
 #, php-format
 msgid "For more actions (revoke, extend, delete), go to the %s page."
@@ -1166,8 +1176,8 @@ msgstr ""
 "Diese Einstellungen dienen als Standard für neue lizensierte Produkte. "
 "Individuelle Produkteinstellungen überschreiben diese Standards."
 
-#: src/Admin/SettingsController.php:176 src/Product/LicensedProductType.php:154
+#: src/Admin/SettingsController.php:176 src/Product/LicensedProductType.php:182
-#: src/Product/LicensedProductType.php:420
+#: src/Product/LicensedProductType.php:570
 msgid "Max Activations"
 msgstr "Max. Aktivierungen"
 
@@ -1175,7 +1185,7 @@ msgstr "Max. Aktivierungen"
 msgid "Default maximum number of domain activations per license."
 msgstr "Standard maximale Anzahl der Domain-Aktivierungen pro Lizenz."
 
-#: src/Admin/SettingsController.php:187 src/Product/LicensedProductType.php:172
+#: src/Admin/SettingsController.php:187 src/Product/LicensedProductType.php:200
 msgid "License Validity (Days)"
 msgstr "Lizenz-Gültigkeit (Tage)"
 
@@ -1187,7 +1197,7 @@ msgstr ""
 "Standard Anzahl Tage, die eine Lizenz gültig ist. Leer lassen oder auf 0 "
 "setzen für lebenslange Lizenzen."
 
-#: src/Admin/SettingsController.php:199 src/Product/LicensedProductType.php:190
+#: src/Admin/SettingsController.php:199 src/Product/LicensedProductType.php:218
 msgid "Bind to Major Version"
 msgstr "An Hauptversion binden"
 
@@ -1215,6 +1225,7 @@ msgstr ""
 msgid "Expiration Warning Schedule"
 msgstr "Ablaufwarnung Zeitplan"
 
+#. translators: %s: URL to WooCommerce email settings
 #: src/Admin/SettingsController.php:230
 #, php-format
 msgid ""
@@ -1346,6 +1357,7 @@ msgstr "Lizenz-Domains"
 msgid "Each license requires a unique domain."
 msgstr "Jede Lizenz erfordert eine eindeutige Domain."
 
+#. translators: %d: license number
 #: src/Checkout/CheckoutBlocksIntegration.php:129
 #: src/Checkout/CheckoutController.php:224
 #, php-format
@@ -1357,6 +1369,16 @@ msgstr "Lizenz %d:"
 msgid "required"
 msgstr "erforderlich"
 
+#: src/Checkout/CheckoutController.php:215
+#, php-format
+msgid "licensed_domains[%s][%d]"
+msgstr "licensed_domains[%s][%d]"
+
+#: src/Checkout/CheckoutController.php:216
+#, php-format
+msgid "licensed_domain_%s_%d"
+msgstr "licensed_domain_%s_%d"
+
 #: src/Checkout/CheckoutController.php:323
 msgid "Please enter a domain for your license."
 msgstr "Bitte geben Sie eine Domain für Ihre Lizenz ein."
@@ -1365,16 +1387,19 @@ msgstr "Bitte geben Sie eine Domain für Ihre Lizenz ein."
 msgid "Please enter a valid domain for your license."
 msgstr "Bitte geben Sie eine gültige Domain für Ihre Lizenz ein."
 
+#. translators: 1: product name, 2: license number
 #: src/Checkout/CheckoutController.php:356
 #, php-format
 msgid "Please enter a domain for %1$s (License %2$d)."
 msgstr "Bitte geben Sie eine Domain für %1$s (Lizenz %2$d) ein."
 
+#. translators: 1: product name, 2: license number
 #: src/Checkout/CheckoutController.php:371
 #, php-format
 msgid "Please enter a valid domain for %1$s (License %2$d)."
 msgstr "Bitte geben Sie eine gültige Domain für %1$s (Lizenz %2$d) ein."
 
+#. translators: 1: domain name, 2: product name
 #: src/Checkout/CheckoutController.php:385
 #, php-format
 msgid ""
@@ -1438,68 +1463,74 @@ msgstr "Diese Lizenz ist für diese Domain nicht gültig."
 msgid "Attachment file not found."
 msgstr "Anhangs-Datei nicht gefunden."
 
+#. translators: 1: provided hash, 2: calculated hash
 #: src/Product/VersionManager.php:177
 #, php-format
 msgid "File checksum does not match. Expected: %1$s, Got: %2$s"
 msgstr "Datei-Prüfsumme stimmt nicht überein. Erwartet: %1$s, Erhalten: %2$s"
 
-#: src/Product/LicensedProductVariation.php:143
+#: src/Product/LicensedProductVariation.php:198
 msgid "Monthly"
 msgstr "Monatlich"
 
-#: src/Product/LicensedProductVariation.php:147
+#: src/Product/LicensedProductVariation.php:202
 msgid "Quarterly"
 msgstr "Vierteljährlich"
 
-#: src/Product/LicensedProductVariation.php:151
+#: src/Product/LicensedProductVariation.php:206
 msgid "Yearly"
 msgstr "Jährlich"
 
-#: src/Product/LicensedProductVariation.php:156
+#. translators: %d: number of days
+#: src/Product/LicensedProductVariation.php:211
 #, php-format
 msgid "%d day"
 msgid_plural "%d days"
 msgstr[0] "%d Tag"
 msgstr[1] "%d Tage"
 
-#: src/Product/LicensedProductType.php:72
+#: src/Product/LicensedProductType.php:82
 msgid "Licensed Product"
 msgstr "Lizensiertes Produkt"
 
-#: src/Product/LicensedProductType.php:73
+#: src/Product/LicensedProductType.php:83
 msgid "Licensed Variable Product"
 msgstr "Lizensiertes variables Produkt"
 
-#: src/Product/LicensedProductType.php:108
+#: src/Product/LicensedProductType.php:136
 msgid "License Settings"
 msgstr "Lizenz-Einstellungen"
 
-#: src/Product/LicensedProductType.php:135
+#: src/Product/LicensedProductType.php:163
-#: src/Product/LicensedProductType.php:402
+#: src/Product/LicensedProductType.php:552
 #, php-format
 msgid "%d days"
 msgstr "%d Tage"
 
-#: src/Product/LicensedProductType.php:145
+#. translators: %s: URL to settings page
+#: src/Product/LicensedProductType.php:173
 #, php-format
 msgid "Leave fields empty to use default settings from %s."
 msgstr "Felder leer lassen, um Standardeinstellungen von %s zu verwenden."
 
-#: src/Product/LicensedProductType.php:147
+#: src/Product/LicensedProductType.php:175
 msgid "WooCommerce > Settings > Licensed Products"
 msgstr "WooCommerce > Einstellungen > Lizensierte Produkte"
 
-#: src/Product/LicensedProductType.php:157
+#. translators: %d: default max activations value
+#: src/Product/LicensedProductType.php:185
 #, php-format
 msgid "Maximum number of domain activations per license. Default: %d"
 msgstr "Maximale Anzahl der Domain-Aktivierungen pro Lizenz. Standard: %d"
 
-#: src/Product/LicensedProductType.php:175
+#. translators: %s: default validity value
+#: src/Product/LicensedProductType.php:203
 #, php-format
 msgid "Number of days the license is valid. Leave empty for default (%s)."
 msgstr "Anzahl Tage, die die Lizenz gültig ist. Leer lassen für Standard (%s)."
 
-#: src/Product/LicensedProductType.php:193
+#. translators: %s: default bind to version value (Yes/No)
+#: src/Product/LicensedProductType.php:221
 #, php-format
 msgid ""
 "If enabled, licenses are bound to the major version at purchase time. "
@@ -1508,35 +1539,35 @@ msgstr ""
 "Falls aktiviert, werden Lizenzen an die Hauptversion zum Kaufzeitpunkt "
 "gebunden. Standard: %s"
 
-#: src/Product/LicensedProductType.php:194
+#: src/Product/LicensedProductType.php:222
 msgid "Yes"
 msgstr "Ja"
 
-#: src/Product/LicensedProductType.php:194
+#: src/Product/LicensedProductType.php:222
 msgid "No"
 msgstr "Nein"
 
-#: src/Product/LicensedProductType.php:329
+#: src/Product/LicensedProductType.php:447
 msgid "Version:"
 msgstr "Version:"
 
-#: src/Product/LicensedProductType.php:373
+#: src/Product/LicensedProductType.php:523
 msgid "Licensed products are always virtual"
 msgstr "Lizenzierte Produkte sind immer virtuell"
 
-#: src/Product/LicensedProductType.php:375
+#: src/Product/LicensedProductType.php:525
 msgid "Virtual"
 msgstr "Virtuell"
 
-#: src/Product/LicensedProductType.php:408
+#: src/Product/LicensedProductType.php:558
 msgid "License Duration (Days)"
 msgstr "Lizenz-Gültigkeit (Tage)"
 
-#: src/Product/LicensedProductType.php:417
+#: src/Product/LicensedProductType.php:567
 msgid "Leave empty for parent default. 0 = Lifetime."
 msgstr "Leer lassen für übergeordneten Standard. 0 = Lebenslang."
 
-#: src/Product/LicensedProductType.php:429
+#: src/Product/LicensedProductType.php:579
 msgid "Leave empty for parent default."
 msgstr "Leer lassen für übergeordneten Standard."
 
@@ -1599,6 +1630,7 @@ msgstr "Bitte melden Sie sich an, um Ihre Lizenzen zu sehen."
 msgid "You have no licenses yet."
 msgstr "Sie haben noch keine Lizenzen."
 
+#. translators: %s: order number
 #: src/Frontend/AccountController.php:245
 #, php-format
 msgid "Order #%s"
@@ -1756,6 +1788,7 @@ msgstr ""
 "Um dieses Produkt weiterhin zu nutzen, verlängern Sie bitte Ihre Lizenz vor "
 "dem Ablaufdatum."
 
+#. translators: %s: list of placeholders
 #: src/Email/LicenseExpirationEmail.php:301
 #: src/Email/LicenseExpiredEmail.php:288
 #, php-format
@@ -1894,6 +1927,7 @@ msgstr ""
 msgid "Configure License"
 msgstr "Lizenz konfigurieren"
 
+#. translators: %s: WooCommerce plugin name
 #: wc-licensed-product.php:61
 #, php-format
 msgid "%s requires WooCommerce to be installed and active."
@@ -1930,3 +1964,39 @@ msgstr ""
 
 #~ msgid "Licensed Domain:"
 #~ msgstr "Lizensierte Domain:"
+
+#: src/Api/UpdateController.php:195
+msgid "Licensed product not found."
+msgstr "Lizenziertes Produkt nicht gefunden."
+
+#: src/Api/UpdateController.php:207
+msgid "No versions available for this product."
+msgstr "Keine Versionen für dieses Produkt verfügbar."
+
+#: src/Update/PluginUpdateChecker.php:295
+msgid "WooCommerce plugin for selling licensed software products with domain-bound license keys."
+msgstr "WooCommerce-Plugin zum Verkauf von lizenzierten Softwareprodukten mit domaingebundenen Lizenzschlüsseln."
+
+#: src/Admin/SettingsController.php:163
+msgid "Auto-Updates"
+msgstr "Auto-Updates"
+
+#: src/Admin/SettingsController.php:165
+msgid "Configure automatic plugin updates from the license server."
+msgstr "Automatische Plugin-Updates vom Lizenzserver konfigurieren."
+
+#: src/Admin/SettingsController.php:169
+msgid "Enable Auto-Updates"
+msgstr "Auto-Updates aktivieren"
+
+#: src/Admin/SettingsController.php:172
+msgid "Automatically check for and receive plugin updates from the license server."
+msgstr "Automatisch auf Plugin-Updates vom Lizenzserver prüfen und diese erhalten."
+
+#: src/Admin/SettingsController.php:177
+msgid "Check Frequency (Hours)"
+msgstr "Prüfhäufigkeit (Stunden)"
+
+#: src/Admin/SettingsController.php:180
+msgid "How often to check for updates (in hours)."
+msgstr "Wie oft auf Updates geprüft werden soll (in Stunden)."

languages/wc-licensed-product.pot

@@ -6,9 +6,9 @@
 #, fuzzy
 msgid ""
 msgstr ""
-"Project-Id-Version: WC Licensed Product 0.5.8\n"
+"Project-Id-Version: WC Licensed Product 0.6.0\n"
 "Report-Msgid-Bugs-To: magdev3.0@gmail.com\n"
-"POT-Creation-Date: 2026-01-27 13:34+0100\n"
+"POT-Creation-Date: 2026-01-27 18:00+0100\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -304,10 +304,10 @@ msgstr ""
 #: src/Admin/DashboardWidgetController.php:136
 #: src/Admin/OrderLicenseController.php:260
 #: src/Admin/SettingsController.php:192
-#: src/Product/LicensedProductVariation.php:139
+#: src/Product/LicensedProductVariation.php:194
-#: src/Product/LicensedProductType.php:136
+#: src/Product/LicensedProductType.php:164
-#: src/Product/LicensedProductType.php:184
+#: src/Product/LicensedProductType.php:212
-#: src/Product/LicensedProductType.php:403
+#: src/Product/LicensedProductType.php:553
 #: src/Frontend/AccountController.php:286
 msgid "Lifetime"
 msgstr ""
@@ -485,6 +485,7 @@ msgstr ""
 msgid "License set to lifetime successfully."
 msgstr ""
 
+#. translators: %d: number of licenses
 #: src/Admin/AdminController.php:1106
 #, php-format
 msgid "%d license activated."
@@ -492,6 +493,7 @@ msgid_plural "%d licenses activated."
 msgstr[0] ""
 msgstr[1] ""
 
+#. translators: %d: number of licenses
 #: src/Admin/AdminController.php:1114
 #, php-format
 msgid "%d license deactivated."
@@ -499,6 +501,7 @@ msgid_plural "%d licenses deactivated."
 msgstr[0] ""
 msgstr[1] ""
 
+#. translators: %d: number of licenses
 #: src/Admin/AdminController.php:1122
 #, php-format
 msgid "%d license revoked."
@@ -506,6 +509,7 @@ msgid_plural "%d licenses revoked."
 msgstr[0] ""
 msgstr[1] ""
 
+#. translators: %d: number of licenses
 #: src/Admin/AdminController.php:1130
 #, php-format
 msgid "%d license deleted."
@@ -513,6 +517,7 @@ msgid_plural "%d licenses deleted."
 msgstr[0] ""
 msgstr[1] ""
 
+#. translators: %d: number of licenses
 #: src/Admin/AdminController.php:1138
 #, php-format
 msgid "%d license extended."
@@ -532,6 +537,7 @@ msgstr ""
 msgid "No licenses to export."
 msgstr ""
 
+#. translators: %d: number of licenses imported
 #: src/Admin/AdminController.php:1159
 #, php-format
 msgid "%d license imported."
@@ -539,6 +545,7 @@ msgid_plural "%d licenses imported."
 msgstr[0] ""
 msgstr[1] ""
 
+#. translators: %d: number of licenses updated
 #: src/Admin/AdminController.php:1166
 #, php-format
 msgid "%d updated."
@@ -546,6 +553,7 @@ msgid_plural "%d updated."
 msgstr[0] ""
 msgstr[1] ""
 
+#. translators: %d: number of licenses skipped
 #: src/Admin/AdminController.php:1174
 #, php-format
 msgid "%d skipped."
@@ -553,6 +561,7 @@ msgid_plural "%d skipped."
 msgstr[0] ""
 msgstr[1] ""
 
+#. translators: %d: number of errors
 #: src/Admin/AdminController.php:1182
 #, php-format
 msgid "%d error."
@@ -997,6 +1006,7 @@ msgstr ""
 msgid "View in Licenses"
 msgstr ""
 
+#. translators: %s: Link to licenses page
 #: src/Admin/OrderLicenseController.php:280
 #, php-format
 msgid "For more actions (revoke, extend, delete), go to the %s page."
@@ -1133,8 +1143,8 @@ msgid ""
 "product settings override these defaults."
 msgstr ""
 
-#: src/Admin/SettingsController.php:176 src/Product/LicensedProductType.php:154
+#: src/Admin/SettingsController.php:176 src/Product/LicensedProductType.php:182
-#: src/Product/LicensedProductType.php:420
+#: src/Product/LicensedProductType.php:570
 msgid "Max Activations"
 msgstr ""
 
@@ -1142,7 +1152,7 @@ msgstr ""
 msgid "Default maximum number of domain activations per license."
 msgstr ""
 
-#: src/Admin/SettingsController.php:187 src/Product/LicensedProductType.php:172
+#: src/Admin/SettingsController.php:187 src/Product/LicensedProductType.php:200
 msgid "License Validity (Days)"
 msgstr ""
 
@@ -1152,7 +1162,7 @@ msgid ""
 "lifetime licenses."
 msgstr ""
 
-#: src/Admin/SettingsController.php:199 src/Product/LicensedProductType.php:190
+#: src/Admin/SettingsController.php:199 src/Product/LicensedProductType.php:218
 msgid "Bind to Major Version"
 msgstr ""
 
@@ -1176,6 +1186,7 @@ msgstr ""
 msgid "Expiration Warning Schedule"
 msgstr ""
 
+#. translators: %s: URL to WooCommerce email settings
 #: src/Admin/SettingsController.php:230
 #, php-format
 msgid ""
@@ -1299,6 +1310,7 @@ msgstr ""
 msgid "Each license requires a unique domain."
 msgstr ""
 
+#. translators: %d: license number
 #: src/Checkout/CheckoutBlocksIntegration.php:129
 #: src/Checkout/CheckoutController.php:224
 #, php-format
@@ -1310,6 +1322,16 @@ msgstr ""
 msgid "required"
 msgstr ""
 
+#: src/Checkout/CheckoutController.php:215
+#, php-format
+msgid "licensed_domains[%s][%d]"
+msgstr ""
+
+#: src/Checkout/CheckoutController.php:216
+#, php-format
+msgid "licensed_domain_%s_%d"
+msgstr ""
+
 #: src/Checkout/CheckoutController.php:323
 msgid "Please enter a domain for your license."
 msgstr ""
@@ -1318,16 +1340,19 @@ msgstr ""
 msgid "Please enter a valid domain for your license."
 msgstr ""
 
+#. translators: 1: product name, 2: license number
 #: src/Checkout/CheckoutController.php:356
 #, php-format
 msgid "Please enter a domain for %1$s (License %2$d)."
 msgstr ""
 
+#. translators: 1: product name, 2: license number
 #: src/Checkout/CheckoutController.php:371
 #, php-format
 msgid "Please enter a valid domain for %1$s (License %2$d)."
 msgstr ""
 
+#. translators: 1: domain name, 2: product name
 #: src/Checkout/CheckoutController.php:385
 #, php-format
 msgid ""
@@ -1389,103 +1414,109 @@ msgstr ""
 msgid "Attachment file not found."
 msgstr ""
 
+#. translators: 1: provided hash, 2: calculated hash
 #: src/Product/VersionManager.php:177
 #, php-format
 msgid "File checksum does not match. Expected: %1$s, Got: %2$s"
 msgstr ""
 
-#: src/Product/LicensedProductVariation.php:143
+#: src/Product/LicensedProductVariation.php:198
 msgid "Monthly"
 msgstr ""
 
-#: src/Product/LicensedProductVariation.php:147
+#: src/Product/LicensedProductVariation.php:202
 msgid "Quarterly"
 msgstr ""
 
-#: src/Product/LicensedProductVariation.php:151
+#: src/Product/LicensedProductVariation.php:206
 msgid "Yearly"
 msgstr ""
 
-#: src/Product/LicensedProductVariation.php:156
+#. translators: %d: number of days
+#: src/Product/LicensedProductVariation.php:211
 #, php-format
 msgid "%d day"
 msgid_plural "%d days"
 msgstr[0] ""
 msgstr[1] ""
 
-#: src/Product/LicensedProductType.php:72
+#: src/Product/LicensedProductType.php:82
 msgid "Licensed Product"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:73
+#: src/Product/LicensedProductType.php:83
 msgid "Licensed Variable Product"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:108
+#: src/Product/LicensedProductType.php:136
 msgid "License Settings"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:135
+#: src/Product/LicensedProductType.php:163
-#: src/Product/LicensedProductType.php:402
+#: src/Product/LicensedProductType.php:552
 #, php-format
 msgid "%d days"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:145
+#. translators: %s: URL to settings page
+#: src/Product/LicensedProductType.php:173
 #, php-format
 msgid "Leave fields empty to use default settings from %s."
 msgstr ""
 
-#: src/Product/LicensedProductType.php:147
+#: src/Product/LicensedProductType.php:175
 msgid "WooCommerce > Settings > Licensed Products"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:157
+#. translators: %d: default max activations value
+#: src/Product/LicensedProductType.php:185
 #, php-format
 msgid "Maximum number of domain activations per license. Default: %d"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:175
+#. translators: %s: default validity value
+#: src/Product/LicensedProductType.php:203
 #, php-format
 msgid "Number of days the license is valid. Leave empty for default (%s)."
 msgstr ""
 
-#: src/Product/LicensedProductType.php:193
+#. translators: %s: default bind to version value (Yes/No)
+#: src/Product/LicensedProductType.php:221
 #, php-format
 msgid ""
 "If enabled, licenses are bound to the major version at purchase time. "
 "Default: %s"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:194
+#: src/Product/LicensedProductType.php:222
 msgid "Yes"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:194
+#: src/Product/LicensedProductType.php:222
 msgid "No"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:329
+#: src/Product/LicensedProductType.php:447
 msgid "Version:"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:373
+#: src/Product/LicensedProductType.php:523
 msgid "Licensed products are always virtual"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:375
+#: src/Product/LicensedProductType.php:525
 msgid "Virtual"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:408
+#: src/Product/LicensedProductType.php:558
 msgid "License Duration (Days)"
 msgstr ""
 
-#: src/Product/LicensedProductType.php:417
+#: src/Product/LicensedProductType.php:567
 msgid "Leave empty for parent default. 0 = Lifetime."
 msgstr ""
 
-#: src/Product/LicensedProductType.php:429
+#: src/Product/LicensedProductType.php:579
 msgid "Leave empty for parent default."
 msgstr ""
 
@@ -1548,6 +1579,7 @@ msgstr ""
 msgid "You have no licenses yet."
 msgstr ""
 
+#. translators: %s: order number
 #: src/Frontend/AccountController.php:245
 #, php-format
 msgid "Order #%s"
@@ -1697,6 +1729,7 @@ msgid ""
 "expiration date."
 msgstr ""
 
+#. translators: %s: list of placeholders
 #: src/Email/LicenseExpirationEmail.php:301
 #: src/Email/LicenseExpiredEmail.php:288
 #, php-format
@@ -1827,6 +1860,7 @@ msgstr ""
 msgid "Configure License"
 msgstr ""
 
+#. translators: %s: WooCommerce plugin name
 #: wc-licensed-product.php:61
 #, php-format
 msgid "%s requires WooCommerce to be installed and active."
@@ -1835,3 +1869,47 @@ msgstr ""
 #: wc-licensed-product.php:119
 msgid "WC Licensed Product requires WooCommerce to be installed and active."
 msgstr ""
+
+#: src/Api/UpdateController.php:175
+msgid "License validation failed."
+msgstr ""
+
+#: src/Api/UpdateController.php:185
+msgid "License not found."
+msgstr ""
+
+#: src/Api/UpdateController.php:195
+msgid "Licensed product not found."
+msgstr ""
+
+#: src/Api/UpdateController.php:207
+msgid "No versions available for this product."
+msgstr ""
+
+#: src/Update/PluginUpdateChecker.php:295
+msgid "WooCommerce plugin for selling licensed software products with domain-bound license keys."
+msgstr ""
+
+#: src/Admin/SettingsController.php:163
+msgid "Auto-Updates"
+msgstr ""
+
+#: src/Admin/SettingsController.php:165
+msgid "Configure automatic plugin updates from the license server."
+msgstr ""
+
+#: src/Admin/SettingsController.php:169
+msgid "Enable Auto-Updates"
+msgstr ""
+
+#: src/Admin/SettingsController.php:172
+msgid "Automatically check for and receive plugin updates from the license server."
+msgstr ""
+
+#: src/Admin/SettingsController.php:177
+msgid "Check Frequency (Hours)"
+msgstr ""
+
+#: src/Admin/SettingsController.php:180
+msgid "How often to check for updates (in hours)."
+msgstr ""

openapi.json

@@ -3,7 +3,7 @@
   "info": {
     "title": "WooCommerce Licensed Product API",
     "description": "REST API for validating and managing software licenses bound to domains. This API allows external applications to validate license keys, check license status, and activate licenses on specific domains.\n\n## Response Signing (Optional)\n\nWhen the server is configured with `WC_LICENSE_SERVER_SECRET`, all API responses include cryptographic signatures for tamper protection:\n\n- `X-License-Signature`: HMAC-SHA256 signature of the response\n- `X-License-Timestamp`: Unix timestamp when the response was generated\n\nSignature verification prevents man-in-the-middle attacks and ensures response integrity. Use the `magdev/wc-licensed-product-client` library's `SecureLicenseClient` class to automatically verify signatures.",
-    "version": "0.3.2",
+    "version": "0.6.0",
     "contact": {
       "name": "Marco Graetsch",
       "url": "https://src.bundespruefstelle.ch/magdev",
@@ -332,6 +332,148 @@
           }
         }
       }
+    },
+    "/update-check": {
+      "post": {
+        "operationId": "checkForUpdates",
+        "summary": "Check for plugin updates",
+        "description": "Checks if a newer version of the licensed product is available. Returns WordPress-compatible update information that can be used to integrate with WordPress's native plugin update system.",
+        "tags": ["Plugin Updates"],
+        "requestBody": {
+          "required": true,
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/UpdateCheckRequest"
+              },
+              "example": {
+                "license_key": "ABCD-1234-EFGH-5678",
+                "domain": "example.com",
+                "plugin_slug": "my-licensed-plugin",
+                "current_version": "1.0.0"
+              }
+            },
+            "application/x-www-form-urlencoded": {
+              "schema": {
+                "$ref": "#/components/schemas/UpdateCheckRequest"
+              }
+            }
+          }
+        },
+        "responses": {
+          "200": {
+            "description": "Update check completed successfully",
+            "headers": {
+              "X-License-Signature": {
+                "$ref": "#/components/headers/X-License-Signature"
+              },
+              "X-License-Timestamp": {
+                "$ref": "#/components/headers/X-License-Timestamp"
+              }
+            },
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/UpdateCheckResponse"
+                },
+                "examples": {
+                  "update_available": {
+                    "summary": "Update is available",
+                    "value": {
+                      "success": true,
+                      "update_available": true,
+                      "version": "1.2.0",
+                      "slug": "my-licensed-plugin",
+                      "plugin": "my-licensed-plugin/my-licensed-plugin.php",
+                      "download_url": "https://example.com/license-download/123-456-abc123",
+                      "package": "https://example.com/license-download/123-456-abc123",
+                      "last_updated": "2026-01-27",
+                      "tested": "6.7",
+                      "requires": "6.0",
+                      "requires_php": "8.3",
+                      "changelog": "## 1.2.0\n- New feature added\n- Bug fixes",
+                      "package_hash": "sha256:abc123def456...",
+                      "name": "My Licensed Plugin",
+                      "homepage": "https://example.com/product/my-plugin"
+                    }
+                  },
+                  "no_update": {
+                    "summary": "No update available",
+                    "value": {
+                      "success": true,
+                      "update_available": false,
+                      "version": "1.0.0"
+                    }
+                  }
+                }
+              }
+            }
+          },
+          "403": {
+            "description": "License validation failed",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                },
+                "examples": {
+                  "license_invalid": {
+                    "summary": "License is not valid",
+                    "value": {
+                      "success": false,
+                      "update_available": false,
+                      "error": "license_invalid",
+                      "message": "License validation failed."
+                    }
+                  },
+                  "domain_mismatch": {
+                    "summary": "Domain mismatch",
+                    "value": {
+                      "success": false,
+                      "update_available": false,
+                      "error": "domain_mismatch",
+                      "message": "This license is not valid for this domain."
+                    }
+                  }
+                }
+              }
+            }
+          },
+          "404": {
+            "description": "License or product not found",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ErrorResponse"
+                },
+                "examples": {
+                  "license_not_found": {
+                    "summary": "License not found",
+                    "value": {
+                      "success": false,
+                      "update_available": false,
+                      "error": "license_not_found",
+                      "message": "License not found."
+                    }
+                  },
+                  "product_not_found": {
+                    "summary": "Product not found",
+                    "value": {
+                      "success": false,
+                      "update_available": false,
+                      "error": "product_not_found",
+                      "message": "Licensed product not found."
+                    }
+                  }
+                }
+              }
+            }
+          },
+          "429": {
+            "$ref": "#/components/responses/RateLimitExceeded"
+          }
+        }
+      }
     }
   },
   "components": {
@@ -516,6 +658,130 @@
             "description": "Seconds until rate limit resets"
           }
         }
+      },
+      "UpdateCheckRequest": {
+        "type": "object",
+        "required": ["license_key", "domain"],
+        "properties": {
+          "license_key": {
+            "type": "string",
+            "description": "The license key to validate (format: XXXX-XXXX-XXXX-XXXX)",
+            "maxLength": 64,
+            "example": "ABCD-1234-EFGH-5678"
+          },
+          "domain": {
+            "type": "string",
+            "description": "The domain the plugin is installed on",
+            "maxLength": 255,
+            "example": "example.com"
+          },
+          "plugin_slug": {
+            "type": "string",
+            "description": "The plugin slug (optional, for identification)",
+            "example": "my-licensed-plugin"
+          },
+          "current_version": {
+            "type": "string",
+            "description": "Currently installed version for comparison",
+            "example": "1.0.0"
+          }
+        }
+      },
+      "UpdateCheckResponse": {
+        "type": "object",
+        "properties": {
+          "success": {
+            "type": "boolean",
+            "description": "Whether the request was successful"
+          },
+          "update_available": {
+            "type": "boolean",
+            "description": "Whether an update is available"
+          },
+          "version": {
+            "type": "string",
+            "description": "Latest available version"
+          },
+          "slug": {
+            "type": "string",
+            "description": "Plugin slug for WordPress"
+          },
+          "plugin": {
+            "type": "string",
+            "description": "Plugin basename (slug/slug.php)"
+          },
+          "download_url": {
+            "type": "string",
+            "format": "uri",
+            "description": "Secure download URL for the update package"
+          },
+          "package": {
+            "type": "string",
+            "format": "uri",
+            "description": "Alias for download_url (WordPress compatibility)"
+          },
+          "last_updated": {
+            "type": "string",
+            "format": "date",
+            "description": "Date of the latest release"
+          },
+          "tested": {
+            "type": "string",
+            "description": "Highest WordPress version tested with"
+          },
+          "requires": {
+            "type": "string",
+            "description": "Minimum required WordPress version"
+          },
+          "requires_php": {
+            "type": "string",
+            "description": "Minimum required PHP version"
+          },
+          "changelog": {
+            "type": "string",
+            "description": "Release notes/changelog for the update"
+          },
+          "package_hash": {
+            "type": "string",
+            "description": "SHA256 hash of the package for integrity verification",
+            "example": "sha256:abc123..."
+          },
+          "name": {
+            "type": "string",
+            "description": "Product name"
+          },
+          "homepage": {
+            "type": "string",
+            "format": "uri",
+            "description": "Product homepage URL"
+          },
+          "icons": {
+            "type": "object",
+            "description": "Plugin icons for WordPress admin",
+            "properties": {
+              "1x": {
+                "type": "string",
+                "format": "uri"
+              },
+              "2x": {
+                "type": "string",
+                "format": "uri"
+              }
+            }
+          },
+          "sections": {
+            "type": "object",
+            "description": "Content sections for plugin info modal",
+            "properties": {
+              "description": {
+                "type": "string"
+              },
+              "changelog": {
+                "type": "string"
+              }
+            }
+          }
+        }
       }
     },
     "responses": {
@@ -577,6 +843,10 @@
     {
       "name": "License Activation",
       "description": "Activate licenses on domains"
+    },
+    {
+      "name": "Plugin Updates",
+      "description": "Check for plugin updates via WordPress-compatible API"
     }
   ]
 }

releases/wc-licensed-product-0.5.10.zip.sha256

@@ -0,0 +1 @@
+2bbc0655f724e201367247f0e40974ddce6d7c559987e661f2b06b43294fc99f  wc-licensed-product-0.5.10.zip

releases/wc-licensed-product-0.5.11.zip.sha256

@@ -0,0 +1 @@
+32571178bfa8f0d0a03ed05b498d5f9b3c860104393a96732e86a03b6de298d2  wc-licensed-product-0.5.11.zip

releases/wc-licensed-product-0.5.12.sha256

@@ -0,0 +1 @@
+20bb5cd453de9bca781864430ebd152c82f660b6f9fc3f09107ba03489a71d75  /home/magdev/workspaces/php/wordpress/wp-content/plugins/wc-licensed-product/releases/wc-licensed-product-0.5.12.zip

releases/wc-licensed-product-0.5.13.zip.sha256

@@ -0,0 +1 @@
+814710ad899529d0015494e4b332eace7d8e55aeda381fdf61f99274c0bf910c  wc-licensed-product-0.5.13.zip

releases/wc-licensed-product-0.5.15.sha256

@@ -0,0 +1 @@
+47407de49bae4c649644af64e87b44b32fb30eeb2d50890ff8c4bbb741059278  wc-licensed-product-0.5.15.zip

releases/wc-licensed-product-0.5.8.zip.sha256

@@ -0,0 +1 @@
+670c2f5182ea7140ccf9533c2b4179daf7890019a244973f467f2a5c7622b9f4  wc-licensed-product-0.5.8.zip

releases/wc-licensed-product-0.5.9.zip.sha256

@@ -0,0 +1 @@
+fae77dab56cb8f46693cf44fe6a1dc38ad0526d881cab2cd1f0878b234afaa8b  wc-licensed-product-0.5.9.zip

src/Admin/OrderLicenseController.php

@@ -83,7 +83,7 @@ final class OrderLicenseController
         $hasLicensedProduct = false;
         foreach ($order->get_items() as $item) {
             $product = $item->get_product();
-            if ($product && $product->is_type('licensed')) {
+            if ($product && $this->licenseManager->isLicensedProduct($product)) {
                 $hasLicensedProduct = true;
                 break;
             }
@@ -162,7 +162,7 @@ final class OrderLicenseController
                 // Legacy: one license per licensed product
                 foreach ($order->get_items() as $item) {
                     $product = $item->get_product();
-                    if ($product && $product->is_type('licensed')) {
+                    if ($product && $this->licenseManager->isLicensedProduct($product)) {
                         $expectedLicenses++;
                     }
                 }
@@ -567,7 +567,7 @@ final class OrderLicenseController
 
         foreach ($order->get_items() as $item) {
             $product = $item->get_product();
-            if (!$product || !$product->is_type('licensed')) {
+            if (!$product || !$this->licenseManager->isLicensedProduct($product)) {
                 continue;
             }
 
@@ -615,7 +615,7 @@ final class OrderLicenseController
 
         foreach ($order->get_items() as $item) {
             $product = $item->get_product();
-            if (!$product || !$product->is_type('licensed')) {
+            if (!$product || !$this->licenseManager->isLicensedProduct($product)) {
                 continue;
             }
 

src/Admin/SettingsController.php

@@ -62,6 +62,7 @@ final class SettingsController
     {
         return [
             '' => __('Plugin License', 'wc-licensed-product'),
+            'auto-updates' => __('Auto-Updates', 'wc-licensed-product'),
             'defaults' => __('Default Settings', 'wc-licensed-product'),
             'notifications' => __('Notifications', 'wc-licensed-product'),
         ];
@@ -112,6 +113,7 @@ final class SettingsController
         $currentSection = $this->getCurrentSection();
 
         return match ($currentSection) {
+            'auto-updates' => $this->getAutoUpdatesSettings(),
             'defaults' => $this->getDefaultsSettings(),
             'notifications' => $this->getNotificationsSettings(),
             default => $this->getPluginLicenseSettings(),
@@ -160,6 +162,44 @@ final class SettingsController
         ];
     }
 
+    /**
+     * Get auto-updates settings
+     */
+    private function getAutoUpdatesSettings(): array
+    {
+        return [
+            'auto_update_section_title' => [
+                'name' => __('Auto-Updates', 'wc-licensed-product'),
+                'type' => 'title',
+                'desc' => __('Configure automatic plugin updates from the license server.', 'wc-licensed-product'),
+                'id' => 'wc_licensed_product_section_auto_update',
+            ],
+            'plugin_auto_update_enabled' => [
+                'name' => __('Enable Auto-Updates', 'wc-licensed-product'),
+                'type' => 'checkbox',
+                'desc' => __('Automatically check for and receive plugin updates from the license server.', 'wc-licensed-product'),
+                'id' => 'wc_licensed_product_plugin_auto_update_enabled',
+                'default' => 'yes',
+            ],
+            'update_check_frequency' => [
+                'name' => __('Check Frequency (Hours)', 'wc-licensed-product'),
+                'type' => 'number',
+                'desc' => __('How often to check for updates (in hours).', 'wc-licensed-product'),
+                'id' => 'wc_licensed_product_update_check_frequency',
+                'default' => '12',
+                'custom_attributes' => [
+                    'min' => '1',
+                    'max' => '168',
+                    'step' => '1',
+                ],
+            ],
+            'auto_update_section_end' => [
+                'type' => 'sectionend',
+                'id' => 'wc_licensed_product_section_auto_update_end',
+            ],
+        ];
+    }
+
     /**
      * Get default license settings
      */
@@ -460,6 +500,23 @@ final class SettingsController
         return !empty($secret) ? (string) $secret : null;
     }
 
+    /**
+     * Check if auto-updates are enabled
+     */
+    public static function isAutoUpdateEnabled(): bool
+    {
+        return get_option('wc_licensed_product_plugin_auto_update_enabled', 'yes') === 'yes';
+    }
+
+    /**
+     * Get update check frequency in hours
+     */
+    public static function getUpdateCheckFrequency(): int
+    {
+        $value = get_option('wc_licensed_product_update_check_frequency', 12);
+        return max(1, min(168, (int) $value));
+    }
+
     /**
      * Handle AJAX verify license request
      */

src/Admin/VersionAdminController.php

@@ -43,25 +43,21 @@ final class VersionAdminController
 
     /**
      * Add versions meta box to product edit page
+     * Always adds the meta box - visibility is controlled via CSS/JavaScript based on product type
      */
     public function addVersionsMetaBox(): void
     {
         global $post;
 
-        // Only add meta box for licensed products or new products
         if ($post && $post->post_type === 'product') {
-            $product = wc_get_product($post->ID);
+            add_meta_box(
-            // Show for licensed products or new products (where type might be selected later)
+                'wc_licensed_product_versions',
-            if (!$product || $product->is_type('licensed') || $post->post_status === 'auto-draft') {
+                __('Product Versions', 'wc-licensed-product'),
-                add_meta_box(
+                [$this, 'renderVersionsMetaBox'],
-                    'wc_licensed_product_versions',
+                'product',
-                    __('Product Versions', 'wc-licensed-product'),
+                'normal',
-                    [$this, 'renderVersionsMetaBox'],
+                'high'
-                    'product',
+            );
-                    'normal',
-                    'high'
-                );
-            }
         }
     }
 
@@ -280,12 +276,13 @@ final class VersionAdminController
         }
 
         // Verify product exists and is of type licensed
-        $product = wc_get_product($productId);
+        // Use WC_Product_Factory::get_product_type() for reliable type detection
-        if (!$product) {
+        $productType = \WC_Product_Factory::get_product_type($productId);
+        if (!$productType) {
             wp_send_json_error(['message' => __('Product not found.', 'wc-licensed-product')]);
         }
 
-        if (!$product->is_type('licensed')) {
+        if (!in_array($productType, ['licensed', 'licensed-variable'], true)) {
             wp_send_json_error(['message' => __('This product is not a licensed product.', 'wc-licensed-product')]);
         }
 

src/Api/UpdateController.php

@@ -0,0 +1,352 @@
+<?php
+/**
+ * Update Controller
+ *
+ * REST API endpoint for plugin update checks
+ *
+ * @package Jeremias\WcLicensedProduct\Api
+ */
+
+declare(strict_types=1);
+
+namespace Jeremias\WcLicensedProduct\Api;
+
+use Jeremias\WcLicensedProduct\License\LicenseManager;
+use Jeremias\WcLicensedProduct\Product\VersionManager;
+use Jeremias\WcLicensedProduct\Product\ProductVersion;
+use WP_REST_Request;
+use WP_REST_Response;
+use WP_REST_Server;
+
+/**
+ * Handles REST API endpoint for plugin update checks
+ *
+ * This endpoint allows licensed plugins to check for updates from this WooCommerce store.
+ * It validates the license and returns WordPress-compatible update information.
+ */
+final class UpdateController
+{
+    private const NAMESPACE = 'wc-licensed-product/v1';
+
+    /**
+     * Default rate limit: requests per window per IP
+     */
+    private const DEFAULT_RATE_LIMIT = 30;
+
+    /**
+     * Default rate limit window in seconds
+     */
+    private const DEFAULT_RATE_WINDOW = 60;
+
+    private LicenseManager $licenseManager;
+    private VersionManager $versionManager;
+
+    public function __construct(LicenseManager $licenseManager, VersionManager $versionManager)
+    {
+        $this->licenseManager = $licenseManager;
+        $this->versionManager = $versionManager;
+        $this->registerHooks();
+    }
+
+    /**
+     * Register WordPress hooks
+     */
+    private function registerHooks(): void
+    {
+        add_action('rest_api_init', [$this, 'registerRoutes']);
+    }
+
+    /**
+     * Get the configured rate limit (requests per window)
+     */
+    private function getRateLimit(): int
+    {
+        return defined('WC_LICENSE_RATE_LIMIT')
+            ? (int) WC_LICENSE_RATE_LIMIT
+            : self::DEFAULT_RATE_LIMIT;
+    }
+
+    /**
+     * Get the configured rate limit window in seconds
+     */
+    private function getRateWindow(): int
+    {
+        return defined('WC_LICENSE_RATE_WINDOW')
+            ? (int) WC_LICENSE_RATE_WINDOW
+            : self::DEFAULT_RATE_WINDOW;
+    }
+
+    /**
+     * Check rate limit for current IP
+     *
+     * @return WP_REST_Response|null Returns error response if rate limited, null if OK
+     */
+    private function checkRateLimit(): ?WP_REST_Response
+    {
+        $ip = $_SERVER['REMOTE_ADDR'] ?? '0.0.0.0';
+        $transientKey = 'wclp_update_rate_' . md5($ip);
+        $rateLimit = $this->getRateLimit();
+        $rateWindow = $this->getRateWindow();
+
+        $data = get_transient($transientKey);
+
+        if ($data === false) {
+            set_transient($transientKey, ['count' => 1, 'start' => time()], $rateWindow);
+            return null;
+        }
+
+        $count = (int) ($data['count'] ?? 0);
+        $start = (int) ($data['start'] ?? time());
+
+        if (time() - $start >= $rateWindow) {
+            set_transient($transientKey, ['count' => 1, 'start' => time()], $rateWindow);
+            return null;
+        }
+
+        if ($count >= $rateLimit) {
+            $retryAfter = $rateWindow - (time() - $start);
+            $response = new WP_REST_Response([
+                'success' => false,
+                'error' => 'rate_limit_exceeded',
+                'message' => __('Too many requests. Please try again later.', 'wc-licensed-product'),
+                'retry_after' => $retryAfter,
+            ], 429);
+            $response->header('Retry-After', (string) $retryAfter);
+            return $response;
+        }
+
+        set_transient($transientKey, ['count' => $count + 1, 'start' => $start], $rateWindow);
+        return null;
+    }
+
+    /**
+     * Register REST API routes
+     */
+    public function registerRoutes(): void
+    {
+        register_rest_route(self::NAMESPACE, '/update-check', [
+            'methods' => WP_REST_Server::CREATABLE,
+            'callback' => [$this, 'handleUpdateCheck'],
+            'permission_callback' => '__return_true',
+            'args' => [
+                'license_key' => [
+                    'required' => true,
+                    'type' => 'string',
+                    'sanitize_callback' => 'sanitize_text_field',
+                    'validate_callback' => function ($value): bool {
+                        $len = strlen($value);
+                        return !empty($value) && $len >= 8 && $len <= 64;
+                    },
+                ],
+                'domain' => [
+                    'required' => true,
+                    'type' => 'string',
+                    'sanitize_callback' => 'sanitize_text_field',
+                    'validate_callback' => function ($value): bool {
+                        return !empty($value) && strlen($value) <= 255;
+                    },
+                ],
+                'plugin_slug' => [
+                    'required' => false,
+                    'type' => 'string',
+                    'sanitize_callback' => 'sanitize_text_field',
+                ],
+                'current_version' => [
+                    'required' => false,
+                    'type' => 'string',
+                    'sanitize_callback' => 'sanitize_text_field',
+                ],
+            ],
+        ]);
+    }
+
+    /**
+     * Handle update check request
+     */
+    public function handleUpdateCheck(WP_REST_Request $request): WP_REST_Response
+    {
+        $rateLimitResponse = $this->checkRateLimit();
+        if ($rateLimitResponse !== null) {
+            return $rateLimitResponse;
+        }
+
+        $licenseKey = $request->get_param('license_key');
+        $domain = $request->get_param('domain');
+        $currentVersion = $request->get_param('current_version');
+
+        // Validate license
+        $validationResult = $this->licenseManager->validateLicense($licenseKey, $domain);
+
+        if (!$validationResult['valid']) {
+            return new WP_REST_Response([
+                'success' => false,
+                'update_available' => false,
+                'error' => $validationResult['error'] ?? 'license_invalid',
+                'message' => $validationResult['message'] ?? __('License validation failed.', 'wc-licensed-product'),
+            ], $validationResult['error'] === 'license_not_found' ? 404 : 403);
+        }
+
+        // Get license to access product ID
+        $license = $this->licenseManager->getLicenseByKey($licenseKey);
+        if (!$license) {
+            return new WP_REST_Response([
+                'success' => false,
+                'update_available' => false,
+                'error' => 'license_not_found',
+                'message' => __('License not found.', 'wc-licensed-product'),
+            ], 404);
+        }
+
+        $productId = $license->getProductId();
+        $product = wc_get_product($productId);
+
+        if (!$product) {
+            return new WP_REST_Response([
+                'success' => false,
+                'update_available' => false,
+                'error' => 'product_not_found',
+                'message' => __('Licensed product not found.', 'wc-licensed-product'),
+            ], 404);
+        }
+
+        // Get latest version based on major version binding
+        $latestVersion = $this->getLatestVersionForLicense($license);
+
+        if (!$latestVersion) {
+            return new WP_REST_Response([
+                'success' => true,
+                'update_available' => false,
+                'version' => $currentVersion ?? '0.0.0',
+                'message' => __('No versions available for this product.', 'wc-licensed-product'),
+            ]);
+        }
+
+        // Check if update is available
+        $updateAvailable = $currentVersion
+            ? version_compare($latestVersion->getVersion(), $currentVersion, '>')
+            : true;
+
+        // Build response
+        $response = $this->buildUpdateResponse($product, $latestVersion, $license, $updateAvailable);
+
+        return new WP_REST_Response($response);
+    }
+
+    /**
+     * Get latest version for a license, respecting major version binding
+     */
+    private function getLatestVersionForLicense($license): ?ProductVersion
+    {
+        $productId = $license->getProductId();
+
+        // Check if license is bound to a specific version
+        $versionId = $license->getVersionId();
+        if ($versionId) {
+            $boundVersion = $this->versionManager->getVersionById($versionId);
+            if ($boundVersion) {
+                // Get latest version for this major version
+                return $this->versionManager->getLatestVersionForMajor(
+                    $productId,
+                    $boundVersion->getMajorVersion()
+                );
+            }
+        }
+
+        // No version binding, return latest overall
+        return $this->versionManager->getLatestVersion($productId);
+    }
+
+    /**
+     * Build WordPress-compatible update response
+     */
+    private function buildUpdateResponse($product, ProductVersion $version, $license, bool $updateAvailable): array
+    {
+        $productSlug = $product->get_slug();
+
+        // Generate secure download URL
+        $downloadUrl = $this->generateUpdateDownloadUrl($license->getId(), $version->getId());
+
+        $response = [
+            'success' => true,
+            'update_available' => $updateAvailable,
+            'version' => $version->getVersion(),
+            'slug' => $productSlug,
+            'plugin' => $productSlug . '/' . $productSlug . '.php',
+            'download_url' => $downloadUrl,
+            'package' => $downloadUrl,
+            'last_updated' => $version->getReleasedAt()->format('Y-m-d'),
+            'tested' => $this->getTestedWpVersion(),
+            'requires' => $this->getRequiredWpVersion(),
+            'requires_php' => $this->getRequiredPhpVersion(),
+        ];
+
+        // Add changelog if available
+        if ($version->getReleaseNotes()) {
+            $response['changelog'] = $version->getReleaseNotes();
+            $response['sections'] = [
+                'description' => $product->get_short_description() ?: $product->get_description(),
+                'changelog' => $version->getReleaseNotes(),
+            ];
+        }
+
+        // Add package hash for integrity verification
+        if ($version->getFileHash()) {
+            $response['package_hash'] = 'sha256:' . $version->getFileHash();
+        }
+
+        // Add product name and homepage
+        $response['name'] = $product->get_name();
+        $response['homepage'] = get_permalink($product->get_id());
+
+        // Add icons if product has featured image
+        $imageId = $product->get_image_id();
+        if ($imageId) {
+            $iconUrl = wp_get_attachment_image_url($imageId, 'thumbnail');
+            $iconUrl2x = wp_get_attachment_image_url($imageId, 'medium');
+            if ($iconUrl) {
+                $response['icons'] = [
+                    '1x' => $iconUrl,
+                    '2x' => $iconUrl2x ?: $iconUrl,
+                ];
+            }
+        }
+
+        return $response;
+    }
+
+    /**
+     * Generate secure download URL for updates
+     */
+    private function generateUpdateDownloadUrl(int $licenseId, int $versionId): string
+    {
+        $data = $licenseId . '-' . $versionId . '-' . wp_salt('auth');
+        $hash = substr(hash('sha256', $data), 0, 16);
+        $downloadKey = $licenseId . '-' . $versionId . '-' . $hash;
+
+        return home_url('license-download/' . $downloadKey);
+    }
+
+    /**
+     * Get tested WordPress version from plugin headers
+     */
+    private function getTestedWpVersion(): string
+    {
+        return get_option('wc_licensed_product_tested_wp', '6.7');
+    }
+
+    /**
+     * Get required WordPress version from plugin headers
+     */
+    private function getRequiredWpVersion(): string
+    {
+        return get_option('wc_licensed_product_requires_wp', '6.0');
+    }
+
+    /**
+     * Get required PHP version
+     */
+    private function getRequiredPhpVersion(): string
+    {
+        return get_option('wc_licensed_product_requires_php', '8.3');
+    }
+}

src/Checkout/CheckoutBlocksIntegration.php

@@ -112,10 +112,12 @@ final class CheckoutBlocksIntegration implements IntegrationInterface
     public function get_script_data(): array
     {
         $isMultiDomain = SettingsController::isMultiDomainEnabled();
+        $licensedProducts = $this->getLicensedProductsFromCart();
+        $hasLicensedProducts = !empty($licensedProducts);
 
         return [
-            'hasLicensedProducts' => $this->cartHasLicensedProducts(),
+            'hasLicensedProducts' => $hasLicensedProducts,
-            'licensedProducts' => $this->getLicensedProductsFromCart(),
+            'licensedProducts' => $licensedProducts,
             'isMultiDomainEnabled' => $isMultiDomain,
             'fieldPlaceholder' => __('example.com', 'wc-licensed-product'),
             'fieldDescription' => $isMultiDomain
@@ -151,8 +153,11 @@ final class CheckoutBlocksIntegration implements IntegrationInterface
         }
 
         $licensedProducts = [];
-        foreach (WC()->cart->get_cart() as $cartItem) {
+        $cartContents = WC()->cart->get_cart();
+
+        foreach ($cartContents as $cartKey => $cartItem) {
             $product = $cartItem['data'];
+
             if (!$product) {
                 continue;
             }
@@ -171,11 +176,12 @@ final class CheckoutBlocksIntegration implements IntegrationInterface
             }
 
             // Check for variations of licensed-variable products
-            if ($product->is_type('variation')) {
+            // Use WC_Product_Factory::get_product_type() for reliable parent type check
-                $parentId = $product->get_parent_id();
+            $parentId = $product->get_parent_id();
-                $parent = wc_get_product($parentId);
+            if ($parentId) {
+                $parentType = \WC_Product_Factory::get_product_type($parentId);
 
-                if ($parent && $parent->is_type('licensed-variable')) {
+                if ($parentType === 'licensed-variable') {
                     $variationId = $product->get_id();
 
                     // Get duration label if it's a LicensedProductVariation

src/Checkout/CheckoutController.php

@@ -67,8 +67,9 @@ final class CheckoutController
         }
 
         $licensedProducts = [];
-        foreach (WC()->cart->get_cart() as $cartItem) {
+        foreach (WC()->cart->get_cart() as $cartItemKey => $cartItem) {
             $product = $cartItem['data'];
+
             if (!$product) {
                 continue;
             }
@@ -87,11 +88,12 @@ final class CheckoutController
             }
 
             // Check for variations of licensed-variable products
-            if ($product->is_type('variation')) {
+            // Use WC_Product_Factory::get_product_type() for reliable parent type check
-                $parentId = $product->get_parent_id();
+            $parentId = $product->get_parent_id();
-                $parent = wc_get_product($parentId);
+            if ($parentId) {
+                $parentType = \WC_Product_Factory::get_product_type($parentId);
 
-                if ($parent && $parent->is_type('licensed-variable')) {
+                if ($parentType === 'licensed-variable') {
                     $variationId = $product->get_id();
                     // Use combination key to allow same product with different variations
                     $key = "{$parentId}_{$variationId}";
@@ -127,6 +129,7 @@ final class CheckoutController
     public function addDomainField(): void
     {
         $licensedProducts = $this->getLicensedProductsFromCart();
+
         if (empty($licensedProducts)) {
             return;
         }
@@ -401,6 +404,7 @@ final class CheckoutController
     public function saveDomainField(int $orderId): void
     {
         $licensedProducts = $this->getLicensedProductsFromCart();
+
         if (empty($licensedProducts)) {
             return;
         }

src/Installer.php

@@ -31,6 +31,7 @@ final class Installer
     {
         self::createTables();
         self::createCacheDir();
+        self::registerProductTypes();
 
         // Set version in options
         update_option('wc_licensed_product_version', WC_LICENSED_PRODUCT_VERSION);
@@ -43,6 +44,28 @@ final class Installer
         flush_rewrite_rules();
     }
 
+    /**
+     * Register custom product type terms in the product_type taxonomy
+     * This is required for WC_Product_Factory::get_product_type() to work correctly
+     */
+    public static function registerProductTypes(): void
+    {
+        // Ensure WooCommerce taxonomies are registered
+        if (!taxonomy_exists('product_type')) {
+            return;
+        }
+
+        // Register 'licensed' product type term if it doesn't exist
+        if (!term_exists('licensed', 'product_type')) {
+            wp_insert_term('licensed', 'product_type');
+        }
+
+        // Register 'licensed-variable' product type term if it doesn't exist
+        if (!term_exists('licensed-variable', 'product_type')) {
+            wp_insert_term('licensed-variable', 'product_type');
+        }
+    }
+
     /**
      * Run on plugin deactivation
      */

src/License/LicenseManager.php

@@ -37,10 +37,18 @@ class LicenseManager
             return true;
         }
 
+        // Check for our custom variation class
+        if ($product instanceof LicensedProductVariation) {
+            return true;
+        }
+
         // Variation of a licensed-variable product
-        if ($product->is_type('variation') && $product->get_parent_id()) {
+        // Use WC_Product_Factory::get_product_type() for reliable parent type check
-            $parent = wc_get_product($product->get_parent_id());
+        // This queries the database directly and doesn't depend on product class loading
-            if ($parent && $parent->is_type('licensed-variable')) {
+        $parentId = $product->get_parent_id();
+        if ($parentId) {
+            $parentType = \WC_Product_Factory::get_product_type($parentId);
+            if ($parentType === 'licensed-variable') {
                 return true;
             }
         }
@@ -101,10 +109,10 @@ class LicenseManager
         // For variations, load the variation; otherwise load the parent product
         if ($variationId) {
             $settingsProduct = wc_get_product($variationId);
-            $parentProduct = wc_get_product($productId);
 
-            // Verify parent is licensed-variable
+            // Verify parent is licensed-variable using DB-level type check
-            if (!$parentProduct || !$parentProduct->is_type('licensed-variable')) {
+            $parentType = \WC_Product_Factory::get_product_type($productId);
+            if ($parentType !== 'licensed-variable') {
                 return null;
             }
 

src/Plugin.php

@@ -17,6 +17,7 @@ use Jeremias\WcLicensedProduct\Admin\SettingsController;
 use Jeremias\WcLicensedProduct\Admin\VersionAdminController;
 use Jeremias\WcLicensedProduct\Api\ResponseSigner;
 use Jeremias\WcLicensedProduct\Api\RestApiController;
+use Jeremias\WcLicensedProduct\Api\UpdateController;
 use Jeremias\WcLicensedProduct\Checkout\CheckoutBlocksIntegration;
 use Jeremias\WcLicensedProduct\Checkout\CheckoutController;
 use Jeremias\WcLicensedProduct\Checkout\StoreApiExtension;
@@ -27,6 +28,7 @@ use Jeremias\WcLicensedProduct\License\LicenseManager;
 use Jeremias\WcLicensedProduct\License\PluginLicenseChecker;
 use Jeremias\WcLicensedProduct\Product\LicensedProductType;
 use Jeremias\WcLicensedProduct\Product\VersionManager;
+use Jeremias\WcLicensedProduct\Update\PluginUpdateChecker;
 use Twig\Environment;
 use Twig\Loader\FilesystemLoader;
 
@@ -139,8 +141,9 @@ final class Plugin
             new AccountController($this->twig, $this->licenseManager, $this->versionManager, $this->downloadController);
         }
 
-        // Always initialize REST API and email controller
+        // Always initialize REST API, update API, and email controller
         new RestApiController($this->licenseManager);
+        new UpdateController($this->licenseManager, $this->versionManager);
         new LicenseEmailController($this->licenseManager);
 
         // Initialize response signing if server secret is configured
@@ -162,6 +165,12 @@ final class Plugin
                 add_action('admin_notices', [$this, 'showUnlicensedNotice']);
             }
         }
+
+        // Initialize update checker if license server is configured (client-side updates)
+        $serverUrl = SettingsController::getPluginLicenseServerUrl();
+        if (!empty($serverUrl) && !$licenseChecker->isSelfLicensing()) {
+            PluginUpdateChecker::getInstance()->register();
+        }
     }
 
     /**
@@ -210,6 +219,7 @@ final class Plugin
 
         // Try new multi-domain format first
         $domainData = $order->get_meta('_licensed_product_domains');
+
         if (!empty($domainData) && is_array($domainData)) {
             $this->generateLicensesMultiDomain($order, $domainData);
             return;
@@ -244,7 +254,12 @@ final class Plugin
         // Generate licenses for each licensed product
         foreach ($order->get_items() as $item) {
             $product = $item->get_product();
-            if (!$product || !$this->licenseManager->isLicensedProduct($product)) {
+
+            if (!$product) {
+                continue;
+            }
+
+            if (!$this->licenseManager->isLicensedProduct($product)) {
                 continue;
             }
 
@@ -278,12 +293,14 @@ final class Plugin
     private function generateLicensesSingleDomain(\WC_Order $order): void
     {
         $domain = $order->get_meta('_licensed_product_domain');
+
         if (empty($domain)) {
             return;
         }
 
         foreach ($order->get_items() as $item) {
             $product = $item->get_product();
+
             if ($product && $this->licenseManager->isLicensedProduct($product)) {
                 // Get the parent product ID (for variations, this is the main product)
                 $productId = $product->is_type('variation') ? $product->get_parent_id() : $product->get_id();

src/Product/LicensedProduct.php

@@ -55,6 +55,14 @@ class LicensedProduct extends WC_Product
         return $this->exists() && $this->get_price() !== '';
     }
 
+    /**
+     * Licensed products are always in stock (virtual, no inventory)
+     */
+    public function is_in_stock(): bool
+    {
+        return true;
+    }
+
     /**
      * Get max activations for this product
      * Falls back to default settings if not set on product

src/Product/LicensedProductType.php

@@ -30,9 +30,12 @@ final class LicensedProductType
      */
     private function registerHooks(): void
     {
+        // Ensure product type terms exist in taxonomy (for WC_Product_Factory::get_product_type())
+        add_action('woocommerce_init', [$this, 'ensureProductTypeTermsExist']);
+
         // Register product types
         add_filter('product_type_selector', [$this, 'addProductType']);
-        add_filter('woocommerce_product_class', [$this, 'getProductClass'], 10, 2);
+        add_filter('woocommerce_product_class', [$this, 'getProductClass'], 10, 4);
 
         // Add product data tabs
         add_filter('woocommerce_product_data_tabs', [$this, 'addProductDataTab']);
@@ -46,9 +49,19 @@ final class LicensedProductType
         add_action('woocommerce_licensed_add_to_cart', [$this, 'addToCartTemplate']);
         add_action('woocommerce_licensed-variable_add_to_cart', [$this, 'variableAddToCartTemplate']);
 
+        // Use variable product add-to-cart handler for licensed-variable products
+        add_filter('woocommerce_add_to_cart_handler', [$this, 'addToCartHandler'], 10, 2);
+
         // Make product virtual by default
         add_filter('woocommerce_product_is_virtual', [$this, 'isVirtual'], 10, 2);
 
+        // Hide stock HTML for licensed products
+        add_filter('woocommerce_get_stock_html', [$this, 'hideStockHtml'], 10, 2);
+        add_filter('woocommerce_get_availability', [$this, 'hideAvailability'], 10, 2);
+        add_filter('woocommerce_get_availability_text', [$this, 'hideAvailabilityText'], 10, 2);
+        add_filter('woocommerce_product_get_stock_quantity', [$this, 'hideStockQuantity'], 10, 2);
+        add_filter('woocommerce_product_variation_get_stock_quantity', [$this, 'hideStockQuantity'], 10, 2);
+
         // Display current version under product title on single product page
         add_action('woocommerce_single_product_summary', [$this, 'displayCurrentVersion'], 6);
 
@@ -64,6 +77,15 @@ final class LicensedProductType
         add_action('admin_footer', [$this, 'addVariableProductScripts']);
     }
 
+    /**
+     * Ensure product type terms exist in the product_type taxonomy
+     * This is required for WC_Product_Factory::get_product_type() to work correctly
+     */
+    public function ensureProductTypeTermsExist(): void
+    {
+        \Jeremias\WcLicensedProduct\Installer::registerProductTypes();
+    }
+
     /**
      * Add product types to selector
      */
@@ -76,8 +98,13 @@ final class LicensedProductType
 
     /**
      * Get product class for licensed types
+     *
+     * @param string $className Default class name
+     * @param string $productType Product type
+     * @param string $postType Post type (usually 'product' or 'product_variation')
+     * @param mixed  $productId Product ID (can be int or string)
      */
-    public function getProductClass(string $className, string $productType): string
+    public function getProductClass(string $className, string $productType, string $postType = '', $productId = 0): string
     {
         if ($productType === 'licensed') {
             return LicensedProduct::class;
@@ -86,11 +113,24 @@ final class LicensedProductType
             return LicensedVariableProduct::class;
         }
         // Handle variations of licensed-variable products
-        if ($productType === 'variation') {
+        // Check both by product type and by post type for variations
-            // Check if parent is licensed-variable
+        if ($productType === 'variation' || $postType === 'product_variation') {
-            global $post;
+            // Get parent ID from the product post
-            if ($post && $post->post_parent) {
+            $parentId = 0;
-                $parentType = \WC_Product_Factory::get_product_type($post->post_parent);
+            $productIdInt = (int) $productId;
+            if ($productIdInt > 0) {
+                $parentId = wp_get_post_parent_id($productIdInt);
+            }
+            // Fallback to global $post if product ID not available
+            if (!$parentId) {
+                global $post;
+                if ($post && $post->post_parent) {
+                    $parentId = (int) $post->post_parent;
+                }
+            }
+
+            if ($parentId) {
+                $parentType = \WC_Product_Factory::get_product_type($parentId);
                 if ($parentType === 'licensed-variable') {
                     return LicensedProductVariation::class;
                 }
@@ -101,15 +141,23 @@ final class LicensedProductType
 
     /**
      * Add product data tab for license settings
+     * Also modify variations tab to show for licensed-variable products
      */
     public function addProductDataTab(array $tabs): array
     {
+        // Add our License Settings tab
         $tabs['licensed_product'] = [
             'label' => __('License Settings', 'wc-licensed-product'),
             'target' => 'licensed_product_data',
             'class' => ['show_if_licensed', 'show_if_licensed-variable'],
             'priority' => 21,
         ];
+
+        // Make Variations tab also show for licensed-variable products
+        if (isset($tabs['variations'])) {
+            $tabs['variations']['class'][] = 'show_if_licensed-variable';
+        }
+
         return $tabs;
     }
 
@@ -199,35 +247,6 @@ final class LicensedProductType
                 ?>
             </div>
         </div>
-        <script type="text/javascript">
-            jQuery(document).ready(function($) {
-                // Show/hide panels based on product type for license settings tab
-                function toggleLicensedProductOptions() {
-                    var productType = $('#product-type').val();
-                    var isLicensed = productType === 'licensed';
-                    var isLicensedVariable = productType === 'licensed-variable';
-
-                    if (isLicensed || isLicensedVariable) {
-                        // Show license settings tab
-                        $('.show_if_licensed').show();
-                        $('.show_if_licensed-variable').show();
-                        $('.general_options').show();
-                        $('.pricing').show();
-                        $('.general_tab').show();
-                    } else {
-                        // Hide license settings tab for other product types
-                        $('.show_if_licensed').hide();
-                        $('.show_if_licensed-variable').hide();
-                    }
-                }
-
-                // Initial state on page load
-                toggleLicensedProductOptions();
-
-                // On product type change
-                $('#product-type').on('change', toggleLicensedProductOptions);
-            });
-        </script>
         <?php
     }
 
@@ -265,26 +284,111 @@ final class LicensedProductType
         wc_get_template('single-product/add-to-cart/simple.php');
     }
 
+    /**
+     * Use the variable product add-to-cart handler for licensed-variable products
+     * WooCommerce uses product type to determine which handler to use
+     */
+    public function addToCartHandler(string $handler, \WC_Product $product): string
+    {
+        if ($product->is_type('licensed-variable')) {
+            return 'variable';
+        }
+        return $handler;
+    }
+
+    /**
+     * Hide stock HTML for licensed products (they're always virtual/in-stock)
+     */
+    public function hideStockHtml(string $html, \WC_Product $product): string
+    {
+        if ($this->isLicensedProductOrVariation($product)) {
+            return '';
+        }
+        return $html;
+    }
+
+    /**
+     * Hide availability data for licensed products (they're always virtual/in-stock)
+     */
+    public function hideAvailability(array $availability, \WC_Product $product): array
+    {
+        if ($this->isLicensedProductOrVariation($product)) {
+            return [
+                'availability' => '',
+                'class'        => '',
+            ];
+        }
+        return $availability;
+    }
+
+    /**
+     * Hide availability text for licensed products
+     */
+    public function hideAvailabilityText(string $availability, \WC_Product $product): string
+    {
+        if ($this->isLicensedProductOrVariation($product)) {
+            return '';
+        }
+        return $availability;
+    }
+
+    /**
+     * Hide stock quantity for licensed products (return null = no stock display)
+     *
+     * @param int|null $quantity
+     * @param \WC_Product $product
+     * @return int|null
+     */
+    public function hideStockQuantity($quantity, \WC_Product $product)
+    {
+        if ($this->isLicensedProductOrVariation($product)) {
+            return null;
+        }
+        return $quantity;
+    }
+
+    /**
+     * Check if product is a licensed product or variation of one
+     */
+    private function isLicensedProductOrVariation(\WC_Product $product): bool
+    {
+        // Direct licensed products
+        if ($product->is_type('licensed') || $product->is_type('licensed-variable')) {
+            return true;
+        }
+
+        // Check by class name for our custom variation class
+        if ($product instanceof LicensedProductVariation) {
+            return true;
+        }
+
+        // Check if this is a variation with a licensed-variable parent
+        // Use WC_Product_Factory::get_product_type() to get parent type directly from DB
+        // This is more reliable than loading the full product object
+        $parentId = $product->get_parent_id();
+        if ($parentId) {
+            $parentType = \WC_Product_Factory::get_product_type($parentId);
+            if ($parentType === 'licensed-variable') {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
     /**
      * Make licensed products virtual by default
      */
     public function isVirtual(bool $isVirtual, \WC_Product $product): bool
     {
-        if ($product->is_type('licensed') || $product->is_type('licensed-variable')) {
+        if ($this->isLicensedProductOrVariation($product)) {
             return true;
         }
-        // Also handle variations of licensed-variable products
-        if ($product->is_type('variation') && $product->get_parent_id()) {
-            $parent = wc_get_product($product->get_parent_id());
-            if ($parent && $parent->is_type('licensed-variable')) {
-                return true;
-            }
-        }
         return $isVirtual;
     }
 
     /**
-     * Enqueue frontend styles for licensed products on single product pages
+     * Enqueue frontend styles and scripts for licensed products on single product pages
      */
     public function enqueueFrontendStyles(): void
     {
@@ -304,6 +408,11 @@ final class LicensedProductType
             [],
             WC_LICENSED_PRODUCT_VERSION
         );
+
+        // For licensed-variable products, enqueue WooCommerce variation scripts
+        if ($product->is_type('licensed-variable')) {
+            wp_enqueue_script('wc-add-to-cart-variation');
+        }
     }
 
     /**
@@ -333,24 +442,56 @@ final class LicensedProductType
 
     /**
      * Add to cart template for variable licensed products
+     * This mirrors WooCommerce's woocommerce_variable_add_to_cart() function
      */
     public function variableAddToCartTemplate(): void
     {
         global $product;
 
-        if (!$product instanceof \WC_Product_Variable) {
+        // The hook woocommerce_licensed-variable_add_to_cart only fires for this product type
+        // so we just need to verify the product exists
+        if (!$product) {
             return;
         }
 
+        // Ensure we're working with a product that has variable product methods
+        // Re-load the product to ensure we get the correct class instance
+        $productId = $product->get_id();
+        $variableProduct = wc_get_product($productId);
+
+        if (!$variableProduct || !method_exists($variableProduct, 'get_variation_attributes')) {
+            // Fallback to simple add to cart if not a variable product
+            wc_get_template('single-product/add-to-cart/simple.php');
+            return;
+        }
+
+        // Update global $product to use the correctly loaded instance
+        // This ensures the template has the right product type
+        $product = $variableProduct;
+
         // Get variations count to determine if we should load them via AJAX
-        $getVariations = count($product->get_children()) <= apply_filters('woocommerce_ajax_variation_threshold', 30, $product);
+        $children = $variableProduct->get_children();
+        $getVariations = count($children) <= apply_filters('woocommerce_ajax_variation_threshold', 30, $variableProduct);
+
+        // Get template variables - WooCommerce expects these to be set
+        $availableVariations = $getVariations ? $variableProduct->get_available_variations() : false;
+        $attributes = $variableProduct->get_variation_attributes();
+        $selectedAttributes = $variableProduct->get_default_attributes();
+
+        // Ensure arrays (WooCommerce template expects arrays, not null)
+        if (!is_array($attributes)) {
+            $attributes = [];
+        }
+        if (!is_array($selectedAttributes)) {
+            $selectedAttributes = [];
+        }
 
         wc_get_template(
             'single-product/add-to-cart/variable.php',
             [
-                'available_variations' => $getVariations ? $product->get_available_variations() : false,
+                'available_variations' => $availableVariations,
-                'attributes'           => $product->get_variation_attributes(),
+                'attributes'           => $attributes,
-                'selected_attributes'  => $product->get_default_attributes(),
+                'selected_attributes'  => $selectedAttributes,
             ]
         );
     }
@@ -492,7 +633,8 @@ final class LicensedProductType
     }
 
     /**
-     * Add JavaScript for licensed-variable product type in admin
+     * Add JavaScript for licensed product types in admin
+     * Handles visibility of License Settings tab and Product Versions meta box
      */
     public function addVariableProductScripts(): void
     {
@@ -509,60 +651,63 @@ final class LicensedProductType
         ?>
         <script type="text/javascript">
             jQuery(document).ready(function($) {
-                // Show/hide panels based on product type
+                // Handle our custom License Settings tab, Product Versions meta box,
-                function toggleLicensedVariableOptions() {
+                // and show_if_licensed-variable elements
+                function toggleOurElements() {
                     var productType = $('#product-type').val();
+                    var isLicensed = productType === 'licensed';
+                    var isLicensedVariable = productType === 'licensed-variable';
 
-                    if (productType === 'licensed-variable') {
+                    // License Settings tab - use CSS class for visibility
-                        // Show variable product options
+                    var $licenseTab = $('li.licensed_product_options');
+                    if (isLicensed || isLicensedVariable) {
+                        $licenseTab.addClass('wclp-active');
+                    } else {
+                        $licenseTab.removeClass('wclp-active');
+                        // If License Settings panel is active, switch to General tab
+                        if ($('#licensed_product_data').is(':visible')) {
+                            $('li.general_options a').trigger('click');
+                        }
+                    }
+
+                    // Product Versions meta box
+                    var $metaBox = $('#wc_licensed_product_versions');
+                    if (isLicensed || isLicensedVariable) {
+                        $metaBox.css('display', '');
+                    } else {
+                        $metaBox.css('display', 'none');
+                    }
+
+                    // Handle show_if_licensed-variable elements (like Variations tab)
+                    // WooCommerce doesn't know about our custom product types
+                    if (isLicensedVariable) {
+                        $('.show_if_licensed-variable').show();
+                        // Also show elements that should be visible for variable products
+                        // since licensed-variable is a variable product type
                         $('.show_if_variable').show();
                         $('.hide_if_variable').hide();
-
+                    } else {
-                        // Show licensed product options
+                        // Let WooCommerce handle show_if_variable elements
-                        $('.show_if_licensed-variable').show();
+                        // We only need to hide our custom class when not licensed-variable
-                        $('.show_if_licensed').show();
+                        // Don't hide show_if_licensed-variable when it's licensed (simple)
-
+                        if (!isLicensed) {
-                        // Show general and variations tabs
+                            $('.show_if_licensed-variable').not('.show_if_licensed').hide();
-                        $('.general_tab').show();
+                        }
-                        $('.variations_tab').show();
-                        $('.variations_options').show();
-
-                        // Hide shipping tab (virtual products)
-                        $('.shipping_tab').hide();
-
-                        // Ensure the variations panel can be displayed
-                        $('#variable_product_options').show();
                     }
                 }
 
-                // Initial check
+                // Initial setup - run after WooCommerce has initialized
-                toggleLicensedVariableOptions();
+                setTimeout(toggleOurElements, 10);
 
-                // On product type change
+                // On product type change - run after WooCommerce has processed
                 $('#product-type').on('change', function() {
-                    // Use setTimeout to let WooCommerce finish its own processing first
+                    setTimeout(toggleOurElements, 100);
-                    setTimeout(toggleLicensedVariableOptions, 100);
                 });
 
-                // Re-apply after WooCommerce AJAX operations that may reset visibility
+                // Re-apply after WooCommerce AJAX operations
-                $(document).on('woocommerce_variations_loaded', toggleLicensedVariableOptions);
+                $(document).on('woocommerce_variations_loaded woocommerce_variations_added woocommerce_variations_saved', function() {
-                $(document).on('woocommerce_variations_added', toggleLicensedVariableOptions);
+                    setTimeout(toggleOurElements, 10);
-                $(document).on('woocommerce_variations_saved', toggleLicensedVariableOptions);
-
-                // Handle AJAX complete events for attribute saving
-                $(document).ajaxComplete(function(event, xhr, settings) {
-                    // Check if this was a product data save or attribute action
-                    if (settings.data && (
-                        settings.data.indexOf('action=woocommerce_save_attributes') !== -1 ||
-                        settings.data.indexOf('action=woocommerce_load_variations') !== -1 ||
-                        settings.data.indexOf('action=woocommerce_add_variation') !== -1
-                    )) {
-                        setTimeout(toggleLicensedVariableOptions, 100);
-                    }
                 });
-
-                // Also listen for the WooCommerce product type show/hide trigger
-                $('body').on('woocommerce-product-type-change', toggleLicensedVariableOptions);
             });
         </script>
         <?php

src/Product/LicensedProductVariation.php

@@ -35,6 +35,61 @@ class LicensedProductVariation extends WC_Product_Variation
         return true;
     }
 
+    /**
+     * Licensed products are always in stock (virtual, no inventory)
+     */
+    public function is_in_stock(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get availability - empty for licensed products (no stock indicator)
+     */
+    public function get_availability(): array
+    {
+        return [
+            'availability' => '',
+            'class'        => '',
+        ];
+    }
+
+    /**
+     * Don't manage stock for licensed products
+     */
+    public function managing_stock(): bool
+    {
+        return false;
+    }
+
+    /**
+     * Check if variation is purchasable
+     * Override to handle custom parent product type
+     */
+    public function is_purchasable(): bool
+    {
+        // Check if variation exists
+        if (!$this->exists()) {
+            return false;
+        }
+
+        // Check parent product status
+        $parentId = $this->get_parent_id();
+        $parentStatus = get_post_status($parentId);
+
+        if ($parentStatus !== 'publish' && !current_user_can('edit_post', $parentId)) {
+            return false;
+        }
+
+        // Check if variation has a price
+        $price = $this->get_price();
+        if ($price === '' || $price === null) {
+            return false;
+        }
+
+        return apply_filters('woocommerce_variation_is_purchasable', true, $this);
+    }
+
     /**
      * Get max activations for this variation
      * Falls back to parent product, then to default settings

src/Product/LicensedVariableProduct.php

@@ -41,6 +41,19 @@ class LicensedVariableProduct extends WC_Product_Variable
         return 'licensed-variable';
     }
 
+    /**
+     * Check if product is of a certain type
+     * Override to return true for 'variable' as well, so WooCommerce internal
+     * checks pass (many methods in WC_Product_Variable check is_type('variable'))
+     */
+    public function is_type($type): bool
+    {
+        if (is_array($type)) {
+            return in_array($this->get_type(), $type, true) || in_array('variable', $type, true);
+        }
+        return $this->get_type() === $type || 'variable' === $type;
+    }
+
     /**
      * Licensed products are always virtual
      */
@@ -50,11 +63,197 @@ class LicensedVariableProduct extends WC_Product_Variable
     }
 
     /**
-     * Licensed products are purchasable
+     * Licensed variable products are purchasable if the parent check passes
+     * Variable products don't have a direct price - their variations do
      */
     public function is_purchasable(): bool
     {
-        return $this->exists() && $this->get_price() !== '';
+        // Use the parent WC_Product_Variable logic
+        // which checks exists() and status, not price
+        return parent::is_purchasable();
+    }
+
+    /**
+     * Licensed products are always in stock (virtual, no inventory)
+     */
+    public function is_in_stock(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get children (variations) for this product
+     * Override because WC_Product_Variable::get_children() checks is_type('variable')
+     * which fails for our 'licensed-variable' type
+     */
+    public function get_children($context = 'view'): array
+    {
+        if (!$this->get_id()) {
+            return [];
+        }
+
+        // Query variations directly from database since WooCommerce's data store
+        // doesn't work properly with custom variable product types
+        global $wpdb;
+        $children = $wpdb->get_col($wpdb->prepare(
+            "SELECT ID FROM {$wpdb->posts}
+             WHERE post_parent = %d
+             AND post_type = 'product_variation'
+             AND post_status IN ('publish', 'private')
+             ORDER BY menu_order ASC, ID ASC",
+            $this->get_id()
+        ));
+
+        $children = array_map('intval', $children);
+
+        if ('view' === $context) {
+            $children = apply_filters('woocommerce_get_children', $children, $this, false);
+        }
+
+        return is_array($children) ? $children : [];
+    }
+
+    /**
+     * Get variation attributes for this product
+     * Override because WC_Product_Variable uses data_store which doesn't work
+     * properly with custom variable product types
+     */
+    public function get_variation_attributes(): array
+    {
+        $attributes = $this->get_attributes();
+
+        if (!$attributes || !is_array($attributes)) {
+            return [];
+        }
+
+        $variation_attributes = [];
+
+        foreach ($attributes as $attribute) {
+            // For WC_Product_Attribute objects
+            if ($attribute instanceof \WC_Product_Attribute) {
+                if ($attribute->get_variation()) {
+                    $attribute_name = $attribute->get_name();
+
+                    // For taxonomy attributes, get term slugs
+                    if ($attribute->is_taxonomy()) {
+                        $attribute_terms = wc_get_product_terms(
+                            $this->get_id(),
+                            $attribute_name,
+                            ['fields' => 'slugs']
+                        );
+                        $variation_attributes[$attribute_name] = $attribute_terms;
+                    } else {
+                        // For custom attributes, get options directly
+                        $variation_attributes[$attribute_name] = $attribute->get_options();
+                    }
+                }
+            }
+            // For array-based attributes (older format)
+            elseif (is_array($attribute) && !empty($attribute['is_variation'])) {
+                $attribute_name = $attribute['name'];
+                $values = isset($attribute['value']) ? explode('|', $attribute['value']) : [];
+                $variation_attributes[$attribute_name] = array_map('trim', $values);
+            }
+        }
+
+        return $variation_attributes;
+    }
+
+    /**
+     * Get variation prices (regular, sale, and final prices)
+     * Override because WC_Product_Variable uses data_store which doesn't work
+     * properly with custom variable product types
+     */
+    public function get_variation_prices($for_display = false): array
+    {
+        $children = $this->get_children();
+
+        if (empty($children)) {
+            return [
+                'price' => [],
+                'regular_price' => [],
+                'sale_price' => [],
+            ];
+        }
+
+        $prices = [
+            'price' => [],
+            'regular_price' => [],
+            'sale_price' => [],
+        ];
+
+        foreach ($children as $child_id) {
+            $variation = wc_get_product($child_id);
+            if ($variation) {
+                $price = $variation->get_price();
+                $regular_price = $variation->get_regular_price();
+                $sale_price = $variation->get_sale_price();
+
+                if ('' !== $price) {
+                    $prices['price'][$child_id] = $price;
+                }
+                if ('' !== $regular_price) {
+                    $prices['regular_price'][$child_id] = $regular_price;
+                }
+                if ('' !== $sale_price) {
+                    $prices['sale_price'][$child_id] = $sale_price;
+                }
+            }
+        }
+
+        // Sort prices
+        asort($prices['price']);
+        asort($prices['regular_price']);
+        asort($prices['sale_price']);
+
+        $this->prices_array = $prices;
+
+        return $this->prices_array;
+    }
+
+    /**
+     * Get available variations for this product
+     * Override because WC_Product_Variable uses data_store which doesn't work
+     * properly with custom variable product types
+     */
+    public function get_available_variations($return = 'array')
+    {
+        $children = $this->get_children();
+        $available_variations = [];
+
+        foreach ($children as $child_id) {
+            $variation = wc_get_product($child_id);
+
+            if (!$variation) {
+                continue;
+            }
+
+            // Check if variation should be available
+            if (!$variation->exists()) {
+                continue;
+            }
+
+            // Check if purchasable (has price)
+            if (!$variation->is_purchasable()) {
+                continue;
+            }
+
+            // Build variation data
+            if ($return === 'array') {
+                $variationData = $this->get_available_variation($variation);
+                // Override availability_html to be empty for licensed products
+                $variationData['availability_html'] = '';
+                $available_variations[] = $variationData;
+            } else {
+                $available_variations[] = $variation;
+            }
+        }
+
+        if ($return === 'array') {
+            $available_variations = array_values(array_filter($available_variations));
+        }
+
+        return $available_variations;
     }
 
     /**

src/Update/PluginUpdateChecker.php

@@ -0,0 +1,417 @@
+<?php
+/**
+ * Plugin Update Checker
+ *
+ * Checks for plugin updates from the configured license server.
+ *
+ * @package Jeremias\WcLicensedProduct\Update
+ */
+
+declare(strict_types=1);
+
+namespace Jeremias\WcLicensedProduct\Update;
+
+use Jeremias\WcLicensedProduct\License\PluginLicenseChecker;
+use Symfony\Component\HttpClient\HttpClient;
+
+/**
+ * Handles checking for plugin updates from the license server
+ *
+ * This class hooks into WordPress's native plugin update system to check for
+ * updates from the configured license server. It validates the license and
+ * provides download authentication.
+ */
+final class PluginUpdateChecker
+{
+    /**
+     * Cache key for update info
+     */
+    private const CACHE_KEY = 'wclp_update_info';
+
+    /**
+     * Default cache TTL (12 hours)
+     */
+    private const DEFAULT_CACHE_TTL = 43200;
+
+    /**
+     * Singleton instance
+     */
+    private static ?self $instance = null;
+
+    /**
+     * Plugin slug
+     */
+    private string $pluginSlug;
+
+    /**
+     * Plugin basename (slug/slug.php)
+     */
+    private string $pluginBasename;
+
+    /**
+     * Get singleton instance
+     */
+    public static function getInstance(): self
+    {
+        if (self::$instance === null) {
+            self::$instance = new self();
+        }
+
+        return self::$instance;
+    }
+
+    /**
+     * Private constructor for singleton
+     */
+    private function __construct()
+    {
+        $this->pluginSlug = 'wc-licensed-product';
+        $this->pluginBasename = WC_LICENSED_PRODUCT_PLUGIN_BASENAME;
+    }
+
+    /**
+     * Register WordPress hooks for update checking
+     */
+    public function register(): void
+    {
+        // Skip if auto-updates are disabled
+        if ($this->isAutoUpdateDisabled()) {
+            return;
+        }
+
+        // Check for updates
+        add_filter('pre_set_site_transient_update_plugins', [$this, 'checkForUpdates']);
+
+        // Provide plugin information for the update modal
+        add_filter('plugins_api', [$this, 'getPluginInfo'], 10, 3);
+
+        // Add authentication headers to download requests
+        add_filter('http_request_args', [$this, 'addAuthHeaders'], 10, 2);
+
+        // Clear cache on settings save
+        add_action('update_option_wc_licensed_product_plugin_license_key', [$this, 'clearCache']);
+        add_action('update_option_wc_licensed_product_plugin_license_server_url', [$this, 'clearCache']);
+    }
+
+    /**
+     * Check if auto-updates are disabled
+     */
+    private function isAutoUpdateDisabled(): bool
+    {
+        // Check constant
+        if (defined('WC_LICENSE_DISABLE_AUTO_UPDATE') && WC_LICENSE_DISABLE_AUTO_UPDATE) {
+            return true;
+        }
+
+        // Check setting
+        $enabled = get_option('wc_licensed_product_plugin_auto_update_enabled', 'yes');
+        return $enabled !== 'yes';
+    }
+
+    /**
+     * Check for plugin updates
+     *
+     * @param object $transient The update_plugins transient
+     * @return object Modified transient
+     */
+    public function checkForUpdates($transient)
+    {
+        if (empty($transient->checked)) {
+            return $transient;
+        }
+
+        // Get cached update info or fetch fresh
+        $updateInfo = $this->getUpdateInfo();
+
+        if (!$updateInfo || !isset($updateInfo['update_available']) || !$updateInfo['update_available']) {
+            return $transient;
+        }
+
+        // Compare versions
+        $currentVersion = $transient->checked[$this->pluginBasename] ?? WC_LICENSED_PRODUCT_VERSION;
+
+        if (version_compare($updateInfo['version'], $currentVersion, '>')) {
+            $transient->response[$this->pluginBasename] = $this->buildUpdateObject($updateInfo);
+        }
+
+        return $transient;
+    }
+
+    /**
+     * Get plugin information for the update modal
+     *
+     * @param false|object|array $result The result object or array
+     * @param string $action The API action
+     * @param object $args Request arguments
+     * @return false|object
+     */
+    public function getPluginInfo($result, string $action, object $args)
+    {
+        if ($action !== 'plugin_information') {
+            return $result;
+        }
+
+        if (!isset($args->slug) || $args->slug !== $this->pluginSlug) {
+            return $result;
+        }
+
+        // Get update info
+        $updateInfo = $this->getUpdateInfo(true);
+
+        if (!$updateInfo) {
+            return $result;
+        }
+
+        return $this->buildPluginInfoObject($updateInfo);
+    }
+
+    /**
+     * Add authentication headers to download requests
+     *
+     * @param array $args HTTP request arguments
+     * @param string $url Request URL
+     * @return array Modified arguments
+     */
+    public function addAuthHeaders(array $args, string $url): array
+    {
+        // Only modify requests to our license server
+        $serverUrl = $this->getLicenseServerUrl();
+        if (empty($serverUrl) || strpos($url, parse_url($serverUrl, PHP_URL_HOST)) === false) {
+            return $args;
+        }
+
+        // Only modify download requests
+        if (strpos($url, 'license-download') === false) {
+            return $args;
+        }
+
+        // Add license key to headers for potential server-side verification
+        $licenseKey = $this->getLicenseKey();
+        if (!empty($licenseKey)) {
+            $args['headers']['X-License-Key'] = $licenseKey;
+        }
+
+        return $args;
+    }
+
+    /**
+     * Get update info from cache or server
+     *
+     * @param bool $forceRefresh Force refresh from server
+     * @return array|null Update info or null if unavailable
+     */
+    public function getUpdateInfo(bool $forceRefresh = false): ?array
+    {
+        // Check cache unless force refresh
+        if (!$forceRefresh) {
+            $cached = get_transient(self::CACHE_KEY);
+            if ($cached !== false) {
+                return $cached;
+            }
+        }
+
+        // Fetch from server
+        $updateInfo = $this->fetchUpdateInfo();
+
+        if ($updateInfo) {
+            // Cache the result
+            $cacheTtl = $this->getCacheTtl();
+            set_transient(self::CACHE_KEY, $updateInfo, $cacheTtl);
+        }
+
+        return $updateInfo;
+    }
+
+    /**
+     * Fetch update info from the license server
+     */
+    private function fetchUpdateInfo(): ?array
+    {
+        $serverUrl = $this->getLicenseServerUrl();
+        $licenseKey = $this->getLicenseKey();
+
+        if (empty($serverUrl) || empty($licenseKey)) {
+            return null;
+        }
+
+        try {
+            $httpClient = HttpClient::create([
+                'timeout' => 15,
+                'verify_peer' => true,
+            ]);
+
+            $updateCheckUrl = rtrim($serverUrl, '/') . '/wp-json/wc-licensed-product/v1/update-check';
+
+            $response = $httpClient->request('POST', $updateCheckUrl, [
+                'json' => [
+                    'license_key' => $licenseKey,
+                    'domain' => $this->getCurrentDomain(),
+                    'plugin_slug' => $this->pluginSlug,
+                    'current_version' => WC_LICENSED_PRODUCT_VERSION,
+                ],
+            ]);
+
+            if ($response->getStatusCode() !== 200) {
+                return null;
+            }
+
+            $data = $response->toArray();
+
+            // Verify response structure
+            if (!isset($data['success']) || !$data['success']) {
+                return null;
+            }
+
+            return $data;
+        } catch (\Throwable $e) {
+            // Log error but don't break the site
+            if (defined('WP_DEBUG') && WP_DEBUG) {
+                error_log('WC Licensed Product: Update check failed - ' . $e->getMessage());
+            }
+            return null;
+        }
+    }
+
+    /**
+     * Build WordPress update object for transient
+     */
+    private function buildUpdateObject(array $updateInfo): object
+    {
+        $update = new \stdClass();
+        $update->id = $this->pluginSlug;
+        $update->slug = $updateInfo['slug'] ?? $this->pluginSlug;
+        $update->plugin = $this->pluginBasename;
+        $update->new_version = $updateInfo['version'];
+        $update->url = $updateInfo['homepage'] ?? '';
+        $update->package = $updateInfo['download_url'] ?? $updateInfo['package'] ?? '';
+
+        if (isset($updateInfo['tested'])) {
+            $update->tested = $updateInfo['tested'];
+        }
+
+        if (isset($updateInfo['requires'])) {
+            $update->requires = $updateInfo['requires'];
+        }
+
+        if (isset($updateInfo['requires_php'])) {
+            $update->requires_php = $updateInfo['requires_php'];
+        }
+
+        if (isset($updateInfo['icons'])) {
+            $update->icons = $updateInfo['icons'];
+        }
+
+        return $update;
+    }
+
+    /**
+     * Build plugin info object for plugins_api
+     */
+    private function buildPluginInfoObject(array $updateInfo): object
+    {
+        $info = new \stdClass();
+        $info->name = $updateInfo['name'] ?? 'WC Licensed Product';
+        $info->slug = $updateInfo['slug'] ?? $this->pluginSlug;
+        $info->version = $updateInfo['version'];
+        $info->author = '<a href="https://src.bundespruefstelle.ch/magdev">Marco Graetsch</a>';
+        $info->homepage = $updateInfo['homepage'] ?? '';
+        $info->requires = $updateInfo['requires'] ?? '6.0';
+        $info->tested = $updateInfo['tested'] ?? '';
+        $info->requires_php = $updateInfo['requires_php'] ?? '8.3';
+        $info->downloaded = 0;
+        $info->last_updated = $updateInfo['last_updated'] ?? '';
+        $info->download_link = $updateInfo['download_url'] ?? $updateInfo['package'] ?? '';
+
+        // Sections for the modal
+        $info->sections = [];
+
+        if (isset($updateInfo['sections']['description'])) {
+            $info->sections['description'] = $updateInfo['sections']['description'];
+        } else {
+            $info->sections['description'] = __(
+                'WooCommerce plugin for selling licensed software products with domain-bound license keys.',
+                'wc-licensed-product'
+            );
+        }
+
+        if (isset($updateInfo['sections']['changelog']) || isset($updateInfo['changelog'])) {
+            $info->sections['changelog'] = $updateInfo['sections']['changelog'] ?? $updateInfo['changelog'];
+        }
+
+        // Banners and icons
+        if (isset($updateInfo['banners'])) {
+            $info->banners = $updateInfo['banners'];
+        }
+
+        if (isset($updateInfo['icons'])) {
+            $info->icons = $updateInfo['icons'];
+        }
+
+        return $info;
+    }
+
+    /**
+     * Clear the update cache
+     */
+    public function clearCache(): void
+    {
+        delete_transient(self::CACHE_KEY);
+    }
+
+    /**
+     * Get cache TTL from settings or default
+     */
+    private function getCacheTtl(): int
+    {
+        $hours = (int) get_option('wc_licensed_product_update_check_frequency', 12);
+        return max(1, $hours) * HOUR_IN_SECONDS;
+    }
+
+    /**
+     * Get the license server URL from settings
+     */
+    private function getLicenseServerUrl(): string
+    {
+        // Check constant override first
+        if (defined('WC_LICENSE_UPDATE_CHECK_URL') && WC_LICENSE_UPDATE_CHECK_URL) {
+            return WC_LICENSE_UPDATE_CHECK_URL;
+        }
+
+        return (string) get_option('wc_licensed_product_plugin_license_server_url', '');
+    }
+
+    /**
+     * Get the license key from settings
+     */
+    private function getLicenseKey(): string
+    {
+        return (string) get_option('wc_licensed_product_plugin_license_key', '');
+    }
+
+    /**
+     * Get the current domain from the site URL
+     */
+    private function getCurrentDomain(): string
+    {
+        $siteUrl = get_site_url();
+        $parsed = parse_url($siteUrl);
+        $host = $parsed['host'] ?? 'localhost';
+
+        if (isset($parsed['port'])) {
+            $host .= ':' . $parsed['port'];
+        }
+
+        return strtolower($host);
+    }
+
+    /**
+     * Force an immediate update check
+     *
+     * Useful for admin interfaces where user clicks "Check for updates"
+     */
+    public function forceUpdateCheck(): ?array
+    {
+        $this->clearCache();
+        return $this->getUpdateInfo(true);
+    }
+}

wc-licensed-product.php

@@ -3,7 +3,7 @@
  * Plugin Name: WooCommerce Licensed Product
  * Plugin URI: https://src.bundespruefstelle.ch/magdev/wc-licensed-product
  * Description: WooCommerce plugin to sell software products using license keys with domain-based validation.
- * Version: 0.5.8
+ * Version: 0.6.0
  * Author: Marco Graetsch
  * Author URI: https://src.bundespruefstelle.ch/magdev
  * License: GPL-2.0-or-later
@@ -28,7 +28,7 @@ if (!defined('ABSPATH')) {
 }
 
 // Plugin constants
-define('WC_LICENSED_PRODUCT_VERSION', '0.5.8');
+define('WC_LICENSED_PRODUCT_VERSION', '0.6.0');
 define('WC_LICENSED_PRODUCT_PLUGIN_FILE', __FILE__);
 define('WC_LICENSED_PRODUCT_PLUGIN_DIR', plugin_dir_path(__FILE__));
 define('WC_LICENSED_PRODUCT_PLUGIN_URL', plugin_dir_url(__FILE__));