Show donation alert 25% of the time on ebook detail pages

config/phpstan/phpstan.neon

@@ -26,6 +26,5 @@ parameters:
 		- %rootDir%/../../../www
 		- %rootDir%/../../../scripts
 	dynamicConstantNames:
+		- DONATION_HOLIDAY_ALERT_ON
 		- DONATION_ALERT_ON
-		- DONATION_ALERT_ALWAYS_ON
-		- DONATION_ALERT_ON_DURING_HOLIDAYS

lib/Constants.php

@@ -36,9 +36,10 @@ const SOURCE_FADED_PAGE = 9;
 const AVERAGE_READING_WORDS_PER_MINUTE = 275;
 
 define('PD_YEAR', intval(gmdate('Y')) - 96);
-const DONATION_ALERT_ALWAYS_ON = false;
-const DONATION_ALERT_ON_DURING_HOLIDAYS = true;
-define('DONATION_ALERT_ON', DONATION_ALERT_ALWAYS_ON | (DONATION_ALERT_ON_DURING_HOLIDAYS && (time() > strtotime('December 1, ' . gmdate('Y'))  || time() < strtotime('January 7, ' . gmdate('Y')))));
+
+define('DONATION_HOLIDAY_ALERT_ON', time() > strtotime('December 1, ' . gmdate('Y'))  || time() < strtotime('January 7, ' . gmdate('Y')));
+define('DONATION_ALERT_ON', rand(1, 4) == 2);
+
 // No trailing slash on any of the below constants.
 const SITE_URL =			'https://standardebooks.org';
 const SITE_ROOT =			'/standardebooks.org';

templates/DonationAlert.php

@@ -1,4 +1,13 @@
+<?
+if(!isset($holidays)){
+	$holidays = false;
+}
+?>
 <aside class="donation">
+	<? if($holidays){ ?>
 	<p>We rely on your support to help us keep producing beautiful, free, and unrestricted editions of literature for the digital age.</p>
-	<p>Will you <a href="/donate">support our efforts with a donation</a> this holiday season?</p>
+	<p>Will you <a href="/donate">support our efforts with a donation</a>?</p>
+	<? }else{ ?>
+	<p>We rely on your support to help us keep producing beautiful, free, and unrestricted editions of literature for the digital age. Will you <a href="/donate">support our efforts with a donation</a>?</p>
+	<? } ?>
 </aside>

www/ebooks/ebook.php

@@ -133,7 +133,9 @@ catch(\Exception $ex){
 
 		<section id="description">
 			<h2>Description</h2>
-			<? if(DONATION_ALERT_ON){ ?>
+			<? if(DONATION_HOLIDAY_ALERT_ON){ ?>
+			<?= Template::DonationAlert(['holidays' => true]) ?>
+			<? }elseif(DONATION_ALERT_ON){ ?>
 			<?= Template::DonationAlert() ?>
 			<? } ?>
 			<? if($ebook->LongDescription === null){ ?>

www/ebooks/index.php

@@ -130,8 +130,8 @@ catch(\Exception $ex){
 ?><?= Template::Header(['title' => $pageTitle, 'highlight' => 'ebooks', 'description' => $pageDescription]) ?>
 <main class="ebooks">
 	<h1><?= $pageHeader ?></h1>
-	<? if(DONATION_ALERT_ON){ ?>
-	<?= Template::DonationAlert() ?>
+	<? if(DONATION_HOLIDAY_ALERT_ON){ ?>
+	<?= Template::DonationAlert(['holidays' => true]) ?>
 	<? } ?>
 	<? if($collection === null){ ?>
 	<?= Template::SearchForm(['query' => $query, 'tags' => $tags, 'sort' => $sort, 'view' => $view, 'perPage' => $perPage]) ?>