move oidc-woocommerce integration logic into snippet (TEST for now, MAY NOT BE WORKING YET)

1 files changed, 126 insertions, 0 deletions

diff --git a/snippets/oidc-woocommerce.php b/snippets/oidc-woocommerce.php
new file mode 100644
index 0000000..5f31e35
--- /dev/null
+++ b/snippets/oidc-woocommerce.php
@@ -0,0 +1,126 @@
+/**
+ * This snippet integrates the OIDC connect button with WooCommerce
+ * to allow importing the customer's shopping details via OIDC.
+ */
+
+/**
+ * Add OIDC login form to checkout page.
+ */
+add_action ('openid-connect-generic-register-login-form',
+    function ( $login_form ) {
+
+        // if WooCommerce is inactive, do nothing
+        if ( ! in_array( 'woocommerce/woocommerce.php',
+                         apply_filters( 'active_plugins',
+                                        get_option( 'active_plugins' ) ) ) ) {
+             return;
+        }
+
+	// show login form at the shopping cart (if not logged in)
+	add_action( 'woocommerce_before_checkout_billing_form',
+                    array( $login_form, 'action_login_page' ) );
+        // Add action to set cookie to redirect back to current
+        // (checkout) page after OIDC provided the data
+        // (see similar add_action()
+        //  above for the 'login_form_login' - we must do the
+        //  same on the 'Billing details' page!)
+        add_action( 'woocommerce_before_checkout_billing_form',
+                    array( $login_form, 'handle_redirect_cookie' ) );
+
+    }
+});
+
+
+/**
+ * Action to output the login button inside the "Billing details" form
+ * just before the user would otherwise manually enter their details.
+ */
+function action_login_page ( $login_form ) {
+	$user = wp_get_current_user ();
+   	if (0 == $user->ID) {
+		// ID 0 is used to indicate user is not logged in.
+		// Re-use filter logic to generate login page
+        	print ( $login_form->handle_login_page ('') );
+	}
+}
+
+
+// hook to convert OIDC fields to WC checkout fields if logged in
+add_filter( 'woocommerce_checkout_fields',
+            'filter_checkout_get_value' );
+
+
+/**
+ * Filter to transform (defaults) for the Billing details according to
+ * the information obtained from OpenID Connect (OIDC).  WooCommerce
+ * already grabs many of the values properly, but there are some fields
+ * which we have to convert manually.
+ */
+function filter_checkout_get_value ($in=array()){
+    $user = wp_get_current_user ();
+    if (0 != $user->ID) {
+	$token_response = $user->get ('openid-connect-generic-last-user-claim');
+	if ( (isset( $token_response)) &&
+             (array_key_exists ('given_name', $token_response)) ){
+                 $given_name = $token_response [ 'given_name' ];
+ 	         $in['billing']['billing_first_name']['default'] = $given_name;
+	         $in['shipping']['shipping_first_name']['default'] = $given_name;
+        }
+	if ( (isset( $token_response)) &&
+             (array_key_exists ('family_name', $token_response)) ){
+                 $family_name = $token_response [ 'family_name' ];
+ 	         $in['billing']['billing_last_name']['default'] = $family_name;
+		 $in['shipping']['shipping_last_name']['default'] = $family_name;
+        }
+	if ( (isset( $token_response)) &&
+             (array_key_exists ('phone_number', $token_response)) ){
+                 $phone_number = $token_response [ 'phone_number' ];
+ 		 $in['billing']['billing_phone']['default'] = $phone_number;
+		 $in['shipping']['shipping_phone']['default'] = $phone_number;
+        }
+        if ( (isset( $token_response)) &&
+             (array_key_exists ('address', $token_response)) ){
+		 $address = $token_response [ 'address' ];
+		 if ( array_key_exists( 'postal_code', $address ) ){
+			$postal_code = $address [ 'postal_code' ];
+			$in['billing']['billing_postcode']['default'] = $postal_code;
+			$in['shipping']['shipping_postcode']['default'] = $postal_code;
+		 }
+		 if ( array_key_exists( 'country', $address ) ){
+			$country = $address [ 'country' ];
+			$in['billing']['billing_country']['default'] = $country;
+			$in['shipping']['shipping_country']['default'] = $country;
+		 }
+		 if ( array_key_exists( 'locality', $address ) ){
+			$locality = $address [ 'locality' ];
+			$in['billing']['billing_city']['default'] = $locality;
+			$in['shipping']['shipping_city']['default'] = $locality;
+		 }
+		 if ( array_key_exists ( 'region', $address ) ){
+			$region = $address [ 'region' ];
+			$in['billing']['billing_state']['default'] = $region;
+			$in['shipping']['shipping_state']['default'] = $region;
+		 }
+		 if ( array_key_exists ( 'formatted', $address ) ){
+			$formatted = $address [ 'formatted' ];
+			$lines = explode ( '\r\n', $formatted );
+			if ( count($lines) > 0 ){
+				$in['billing']['billing_address_1']['default'] = $lines[0];
+				$in['shipping']['shipping_address_1']['default'] = $lines[0];
+			}
+			if ( count($lines) > 1 ){
+				$in['billing']['billing_address_2']['default'] = $lines[1];
+				$in['shipping']['shipping_address_2']['default'] = $lines[1];
+			}
+		 }
+		 if ( array_key_exists ( 'street_address', $address ) ){
+			$street_address = $address [ 'street_address' ];
+			if ( ! array_key_exists ( 'formatted', $address ) ){
+				$in['billing']['billing_address_1']['default'] = $street_address;
+			        $in['shipping']['shipping_address_1']['default'] = $street_address;
+		        }
+		}
+	}
+    }
+    return $in;
+}