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<title>[13253] sites/trunk/wordpress.org/public_html/wp-content/plugins/photo-directory: Photo Directory, Random: Add 'random' URL endpoint to load a random photo.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="http://meta.trac.wordpress.org/changeset/13253">13253</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"http://meta.trac.wordpress.org/changeset/13253","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>coffee2code</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2024-02-29 23:38:52 +0000 (Thu, 29 Feb 2024)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Photo Directory, Random: Add 'random' URL endpoint to load a random photo.

Props desrosj, coffee2code.
Fixes <a href="http://meta.trac.wordpress.org/ticket/7500">#7500</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsphotodirectoryphotodirectoryphp">sites/trunk/wordpress.org/public_html/wp-content/plugins/photo-directory/photo-directory.php</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentpluginsphotodirectoryincrandomphp">sites/trunk/wordpress.org/public_html/wp-content/plugins/photo-directory/inc/random.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsphotodirectoryincrandomphp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: sites/trunk/wordpress.org/public_html/wp-content/plugins/photo-directory/inc/random.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/photo-directory/inc/random.php                           (rev 0)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/photo-directory/inc/random.php     2024-02-29 23:38:52 UTC (rev 13253)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,140 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+/**
+ * Random photo(s) handling.
+ *
+ * @package WordPressdotorg\Photo_Directory
+ */
+
+namespace WordPressdotorg\Photo_Directory;
+
+class Random {
+
+       /**
+        * The relative path rewrite endpoint for loading a random photo.
+        */
+       const PATH = 'random';
+
+       /**
+        * The query variable denoting a request for a random photo.
+        */
+       const QUERY_VAR_LOAD_RANDOM = 'load-random-photo';
+
+       /**
+        * The cookie denoting that the current photo was randomly chosen.
+        */
+       const COOKIE_WAS_RANDOM = 'random-photo';
+
+       /**
+        * Flag to indicate if the current request was a result of a request for a random photo.
+        *
+        * @access private
+        * @var bool
+        */
+       private static $was_photo_random = false;
+
+       /**
+        * Initializer.
+        */
+       public static function init() {
+               add_action( 'init',              [ __CLASS__, 'add_rewrite_rule' ] );
+               add_filter( 'query_vars',        [ __CLASS__, 'add_query_var' ] );
+               add_action( 'template_redirect', [ __CLASS__, 'detect_random_photo_cookie' ] );
+               add_action( 'template_redirect', [ __CLASS__, 'redirect_if_random' ] );
+               add_filter( 'wp_robots',         [ __CLASS__, 'noindex' ] );
+       }
+
+       /**
+        * Adds the rewrite rule for the 'random' URL endpoint.
+        */
+       public static function add_rewrite_rule() {
+               add_rewrite_rule( '^' . self::PATH . '/?$', 'index.php?' . self::QUERY_VAR_LOAD_RANDOM . '=1', 'top' );
+       }
+
+       /**
+        * Adds the query variable for denoting a request for a random photo.
+        *
+        * @param string[] $query_vars Array of query variables.
+        * @return string[]
+        */
+       public static function add_query_var( $query_vars ) {
+               $query_vars[] = self::QUERY_VAR_LOAD_RANDOM;
+               return $query_vars;
+       }
+
+       /**
+        * Determines if the current query is a request for a random photo.
+        *
+        * @return bool True if the current query is a request for a random photo, else false.
+        */
+       public static function is_random_photo_query() {
+               return is_front_page() && is_main_query() && '1' === get_query_var( self::QUERY_VAR_LOAD_RANDOM );
+       }
+
+       /**
+        * Determines if the current photo was a randomly chosen photo.
+        *
+        * @param bool $and_clear Should the cookie used to record that a photo was randomly chosen be cleared? Default true.
+        * @return bool True if the current photo was a random photo, else false.
+        */
+       public static function was_photo_random( $and_clear = true ) {
+               return is_singular( Registrations::get_post_type() ) && self::$was_photo_random;
+       }
+
+       /**
+        * Handles the redirect when the random photo URL endpoint is visited.
+        */
+       public static function redirect_if_random() {
+               if ( self::is_random_photo_query() ) {
+                       $args = [
+                               'fields'         => 'ids',
+                               'no_found_rows'  => true,
+                               'orderby'        => 'rand',
+                               'post_status'    => 'publish',
+                               'post_type'      => Registrations::get_post_type(),
+                               'posts_per_page' => 1,
+                       ];
+
+                       $photo_query = new \WP_Query( $args );
+
+                       if ( $photo_query->have_posts() ) {
+                               // Set a simple cookie to denote the fact that the photo was loaded randomly.
+                               setcookie( self::COOKIE_WAS_RANDOM, '1', time() + MINUTE_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
+
+                               wp_safe_redirect( get_permalink( $photo_query->posts[0] ), 302 );
+                               exit;
+                       }
+               }
+       }
+
+       /**
+        * Detects the presence of the cookie associated with denoting that a random photo
+        * was requested.
+        *
+        * If detected, it is noted and the cookie gets deleted.
+        *
+        * Use `self::was_photo_random()` to check if the loaded photo was randomly chosen.
+        */
+       public static function detect_random_photo_cookie() {
+               if ( isset( $_COOKIE[ self::COOKIE_WAS_RANDOM ] ) ) {
+                       setcookie( self::COOKIE_WAS_RANDOM, '', 1, SITECOOKIEPATH, COOKIE_DOMAIN );
+                       self::$was_photo_random = true;
+               }
+       }
+
+       /**
+        * Prevents indexing of the random photo URL endpoint.
+        *
+        * @param array[] $robots Associative array of directives.
+        * @return array[]
+        */
+       public static function noindex( $robots ) {
+               if ( self::is_random_photo_query() ) {
+                       $robots = wp_robots_no_robots( $robots );
+               }
+
+               return $robots;
+       }
+
+}
+
+add_action( 'plugins_loaded', [ __NAMESPACE__ . '\Random', 'init' ] );
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: sites/trunk/wordpress.org/public_html/wp-content/plugins/photo-directory/inc/random.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svneolstyle"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:eol-style</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+native
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="sitestrunkwordpressorgpublic_htmlwpcontentpluginsphotodirectoryphotodirectoryphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: sites/trunk/wordpress.org/public_html/wp-content/plugins/photo-directory/photo-directory.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/plugins/photo-directory/photo-directory.php      2024-02-29 07:11:05 UTC (rev 13252)
+++ sites/trunk/wordpress.org/public_html/wp-content/plugins/photo-directory/photo-directory.php        2024-02-29 23:38:52 UTC (rev 13253)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -22,6 +22,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> require_once __DIR__ . '/inc/moderation.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require_once __DIR__ . '/inc/photo.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require_once __DIR__ . '/inc/posts.php';
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+require_once __DIR__ . '/inc/random.php';
</ins><span class="cx" style="display: block; padding: 0 10px"> require_once __DIR__ . '/inc/registrations.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require_once __DIR__ . '/inc/rejection.php';
</span><span class="cx" style="display: block; padding: 0 10px"> require_once __DIR__ . '/inc/search.php';
</span></span></pre>
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