Add debug logging and expand Google product matching

- Log sample Google product structure to help debug matching
- Expand matching to check nested 'attributes' field (new API format)
- Extract offerId from productId field (channel:lang:country:id format)
- Extract offerId from name field (resource path format)
- Return debug info in AJAX response (sample keys, sample product)
- Log debug info in browser console
- Remove alert popup since button is now working

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

admin/class-informatiq-sp-admin.php

@@ -833,15 +833,54 @@ class Informatiq_SP_Admin {
 			$google_products_raw = $google_api->get_all_products();
 			$google_products = array();
 
+			// Log first product structure for debugging.
+			if ( ! empty( $google_products_raw[0] ) ) {
+				$this->logger->info( 'Sample Google product structure: ' . wp_json_encode( array_keys( $google_products_raw[0] ) ) );
+				$this->logger->info( 'Sample Google product data: ' . wp_json_encode( $google_products_raw[0] ) );
+			}
+
 			foreach ( $google_products_raw as $gp ) {
-				// Index by offerId.
+				// Index by offerId (direct field).
 				if ( ! empty( $gp['offerId'] ) ) {
 					$google_products['offer_' . $gp['offerId']] = $gp;
 				}
-				// Index by gtin.
+
+				// Index by gtin (direct field).
 				if ( ! empty( $gp['gtin'] ) ) {
 					$google_products['gtin_' . $gp['gtin']] = $gp;
 				}
+
+				// Also check nested attributes structure (new Merchant API format).
+				if ( ! empty( $gp['attributes']['offerId'] ) ) {
+					$google_products['offer_' . $gp['attributes']['offerId']] = $gp;
+				}
+				if ( ! empty( $gp['attributes']['gtin'] ) ) {
+					$google_products['gtin_' . $gp['attributes']['gtin']] = $gp;
+				}
+
+				// Check productId which might contain the identifier.
+				if ( ! empty( $gp['productId'] ) ) {
+					// productId format is usually: online:en:US:SKU or channel:language:country:offerId
+					$parts = explode( ':', $gp['productId'] );
+					if ( count( $parts ) >= 4 ) {
+						$extracted_offer = $parts[ count( $parts ) - 1 ];
+						$google_products['offer_' . $extracted_offer] = $gp;
+					}
+				}
+
+				// Check name field which contains full resource path.
+				if ( ! empty( $gp['name'] ) ) {
+					// name format: accounts/{account}/products/{product_id}
+					// product_id format: online~en~US~SKU
+					if ( preg_match( '/products\/(.+)$/', $gp['name'], $matches ) ) {
+						$product_id = $matches[1];
+						$parts = explode( '~', $product_id );
+						if ( count( $parts ) >= 4 ) {
+							$extracted_offer = $parts[ count( $parts ) - 1 ];
+							$google_products['offer_' . $extracted_offer] = $gp;
+						}
+					}
+				}
 			}
 
 			// Get WooCommerce in-stock products (limit to 50 for performance).
@@ -903,11 +942,19 @@ class Informatiq_SP_Admin {
 				);
 			}
 
+			// Get sample of indexed keys for debugging.
+			$sample_keys = array_slice( array_keys( $google_products ), 0, 10 );
+
 			wp_send_json_success( array(
 				'products'       => $comparison,
 				'google_count'   => count( $google_products_raw ),
 				'wc_count'       => count( $wc_products ),
 				'currency'       => get_woocommerce_currency_symbol(),
+				'debug'          => array(
+					'sample_google_keys'    => $sample_keys,
+					'sample_google_product' => ! empty( $google_products_raw[0] ) ? $google_products_raw[0] : null,
+					'index_count'           => count( $google_products ),
+				),
 			) );
 
 		} catch ( Exception $e ) {

assets/js/admin.js

@@ -202,7 +202,6 @@ console.log('Informatiq Smart Pricing: Script loaded');
 			e.preventDefault();
 
 			console.log('=== COMPARE PRODUCTS CLICKED ===');
-			alert('Compare Products button clicked! Check console for details.');
 
 			var $button = $(this);
 			var $spinner = $button.next('.spinner');
@@ -244,6 +243,16 @@ console.log('Informatiq Smart Pricing: Script loaded');
 				success: function(response) {
 					console.log('AJAX success callback');
 					console.log('AJAX response:', response);
+
+					// Log debug info if available.
+					if (response.data && response.data.debug) {
+						console.log('=== DEBUG INFO ===');
+						console.log('Sample Google product:', response.data.debug.sample_google_product);
+						console.log('Sample indexed keys:', response.data.debug.sample_google_keys);
+						console.log('Total indexed entries:', response.data.debug.index_count);
+						console.log('==================');
+					}
+
 					$status.hide();
 
 					if (response.success) {