- Adds custom date format as a shortcode action's argument

- Updates shortcodes logic to allow action arguments other than
"default"

lib/Newsletter/Shortcodes/Categories/Date.php

@@ -2,9 +2,13 @@
 namespace MailPoet\Newsletter\Shortcodes\Categories;
 
 class Date {
-  static function process($format) {
+  static function process(
+    $action,
+    $action_argument = false,
+    $action_argument_value = false
+  ) {
     $date = new \DateTime('now');
-    $available_formats = array(
+    $action_formats = array(
       'd' => $date->format('d'),
       'dordinal' => $date->format('dS'),
       'dtext' => $date->format('l'),
@@ -12,11 +16,11 @@ class Date {
       'mtext' => $date->format('F'),
       'y' => $date->format('Y')
     );
-    if(!empty($available_formats[$format])) {
-      return $available_formats[$format];
+    if(!empty($action_formats[$action])) {
+      return $action_formats[$action];
     }
-    return (preg_match('/^custom_(.*?)$/', $format, $custom_format)) ?
-      $date->format($custom_format[1]) :
+    return ($action === 'custom' && $action_argument === 'format') ?
+      $date->format($action_argument_value) :
       false;
   }
 }

lib/Newsletter/Shortcodes/Categories/Link.php

@@ -9,7 +9,8 @@ use MailPoet\Subscription\Url as SubscriptionUrl;
 class Link {
   static function process(
     $action,
-    $default_value,
+    $action_argument,
+    $action_argument_value,
     $newsletter,
     $subscriber,
     $queue,

lib/Newsletter/Shortcodes/Categories/Newsletter.php

@@ -8,7 +8,8 @@ require_once(ABSPATH . "wp-includes/pluggable.php");
 
 class Newsletter {
   static function process($action,
-    $default_value,
+    $action_argument,
+    $action_argument_value,
     $newsletter,
     $subscriber,
     $queue,

lib/Newsletter/Shortcodes/Categories/Subscriber.php

@@ -10,11 +10,15 @@ require_once(ABSPATH . 'wp-includes/pluggable.php');
 class Subscriber {
   static function process(
     $action,
-    $default_value,
+    $action_argument,
+    $action_argument_value,
     $newsletter,
     $subscriber
   ) {
     if($subscriber !== false && !is_object($subscriber)) return false;
+    $default_value = ($action_argument === 'default') ?
+      $action_argument_value :
+      '';
     switch($action) {
       case 'firstname':
         return ($subscriber) ? $subscriber->first_name : $default_value;

lib/Newsletter/Shortcodes/Shortcodes.php

@@ -37,7 +37,7 @@ class Shortcodes {
 
   function match($shortcode) {
     preg_match(
-      '/\[(?P<category>\w+)?:(?P<action>\w+)(?:.*?\|.*?default:(?P<default>.*?))?\]/',
+      '/\[(?P<category>\w+)?:(?P<action>\w+)(?:.*?\|.*?(?P<argument>\w+):(?P<argument_value>.*?))?\]/',
       $shortcode,
       $match
     );
@@ -57,8 +57,11 @@ class Shortcodes {
           false;
         $shortcode_class =
           Shortcodes::SHORTCODE_CATEGORY_NAMESPACE . $shortcode_category;
-        $shortcode_default_value = !empty($shortcode_details['default']) ?
-          $shortcode_details['default'] :
+        $shortcode_argument = !empty($shortcode_details['argument']) ?
+          $shortcode_details['argument'] :
+          false;
+        $shortcode_argument_value = !empty($shortcode_details['argument_value']) ?
+          $shortcode_details['argument_value'] :
           false;
         if(!class_exists($shortcode_class)) {
           $custom_shortcode = apply_filters(
@@ -76,7 +79,8 @@ class Shortcodes {
         }
         return $shortcode_class::process(
           $shortcode_action,
-          $shortcode_default_value,
+          $shortcode_argument,
+          $shortcode_argument_value,
           $_this->newsletter,
           $_this->subscriber,
           $_this->queue,

tests/unit/Newsletter/ShortcodesTest.php

@@ -55,7 +55,8 @@ class ShortcodesTest extends MailPoetTest {
     $details = $shortcodes_object->match($content);
     expect($details['category'])->equals('category');
     expect($details['action'])->equals('action');
-    expect($details['default'])->equals('default_value');
+    expect($details['argument'])->equals('default');
+    expect($details['argument_value'])->equals('default_value');
     $content = '[category:action|default]';
     $details = $shortcodes_object->match($content);
     expect($details)->isEmpty();
@@ -86,7 +87,7 @@ class ShortcodesTest extends MailPoetTest {
     expect(Date::process('mtext'))->equals($date->format('F'));
     expect(Date::process('y'))->equals($date->format('Y'));
     // allow custom date formats (http://php.net/manual/en/function.date.php)
-    expect(Date::process('custom_U'))->equals($date->format('U'));
+    expect(Date::process('custom', 'format', 'U'))->equals($date->format('U'));
   }
 
   function testItCanProcessNewsletterShortcodes() {