From a10ec4c39487e7862afa6b4a47996f36587fa2c2 Mon Sep 17 00:00:00 2001
From: Roman Kelesidis <roman25052006.kelesh@gmail.com>
Date: Sun, 21 Jul 2024 19:59:08 +0700
Subject: [PATCH] Pagination with `rel="next"` and `rel="prev"` support (#1551)

* Minor improvements

* Update CHANGELOG.md
---
 CHANGELOG.md                                    | 1 +
 library/includes/functions.php                  | 7 ++++++-
 styles/templates/default/page_header.tpl        | 6 ++++++
 styles/templates/default/usercp_topic_watch.tpl | 2 +-
 styles/templates/default/viewforum.tpl          | 2 +-
 5 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 66acebde8..7ea344bd9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@
 - Fixed broken "Disable Board" function [\#1529](https://github.com/torrentpier/torrentpier/pull/1529) ([belomaxorka](https://github.com/belomaxorka))
 - Fixed seed bonus accrual [\#1518](https://github.com/torrentpier/torrentpier/pull/1518) ([belomaxorka](https://github.com/belomaxorka))
 - [BETA] Added emojis support 😄😁 [\#1514](https://github.com/torrentpier/torrentpier/pull/1514) ([belomaxorka](https://github.com/belomaxorka))
+- Pagination with `rel="next"` and `rel="prev"` support [\#1551](https://github.com/torrentpier/torrentpier/pull/1551) ([belomaxorka](https://github.com/belomaxorka))
 - Datastore improvements [\#1538](https://github.com/torrentpier/torrentpier/pull/1538) ([belomaxorka](https://github.com/belomaxorka))
 - Resize user/group avatar image if too large 🌆 [\#1512](https://github.com/torrentpier/torrentpier/pull/1512) ([belomaxorka](https://github.com/belomaxorka))
 - Increased PASSWORD_MAX_LENGTH [\#1510](https://github.com/torrentpier/torrentpier/pull/1510) ([belomaxorka](https://github.com/belomaxorka))
diff --git a/library/includes/functions.php b/library/includes/functions.php
index 0188bcdc7..6a4ef5aae 100644
--- a/library/includes/functions.php
+++ b/library/includes/functions.php
@@ -1278,10 +1278,12 @@ function generate_pagination($base_url, $num_items, $per_page, $start_item, $add
     if ($add_prevnext_text) {
         if ($on_page > 1) {
             $page_string = ' <a href="' . $base_url . "&amp;start=" . (($on_page - 2) * $per_page) . '">' . $lang['PREVIOUS_PAGE'] . '</a>&nbsp;&nbsp;' . $page_string;
+            $meta_prev_link = FULL_URL . $base_url . "&amp;start=" . (($on_page - 2) * $per_page);
         }
 
         if ($on_page < $total_pages) {
             $page_string .= '&nbsp;&nbsp;<a href="' . $base_url . "&amp;start=" . ($on_page * $per_page) . '">' . $lang['NEXT_PAGE'] . '</a>';
+            $meta_next_link = FULL_URL . $base_url . "&amp;start=" . ($on_page * $per_page);
         }
     }
 
@@ -1295,7 +1297,10 @@ function generate_pagination($base_url, $num_items, $per_page, $start_item, $add
         'PAGINATION' => $pagination,
         'PAGE_NUMBER' => sprintf($lang['PAGE_OF'], (floor($start_item / $per_page) + 1), ceil($num_items / $per_page)),
         'PG_BASE_URL' => $base_url,
-        'PG_PER_PAGE' => $per_page
+        'PG_PER_PAGE' => $per_page,
+        // Assign meta
+        'META_PREV_PAGE' => $meta_prev_link ?? '',
+        'META_NEXT_PAGE' => $meta_next_link ?? '',
     ]);
 
     return $pagination;
diff --git a/styles/templates/default/page_header.tpl b/styles/templates/default/page_header.tpl
index 9a7febee5..8d8d24ba5 100644
--- a/styles/templates/default/page_header.tpl
+++ b/styles/templates/default/page_header.tpl
@@ -11,6 +11,12 @@
 <meta property="twitter:image" content="{SITE_URL}styles/images/logo/logo.png">
 <meta property="og:title" content="<!-- IF PAGE_TITLE -->{PAGE_TITLE} :: {SITENAME}<!-- ELSE -->{SITENAME}<!-- ENDIF -->">
 <meta property="twitter:title" content="<!-- IF PAGE_TITLE -->{PAGE_TITLE} :: {SITENAME}<!-- ELSE -->{SITENAME}<!-- ENDIF -->">
+<!-- IF META_PREV_PAGE -->
+<link rel="prev" href="{META_PREV_PAGE}">
+<!-- ENDIF / META_PREV_PAGE -->
+<!-- IF META_NEXT_PAGE -->
+<link rel="next" href="{META_NEXT_PAGE}">
+<!-- ENDIF / META_NEXT_PAGE -->
 {META}
 <link rel="stylesheet" href="{STYLESHEET}?v={$bb_cfg['css_ver']}" type="text/css">
 <link rel="shortcut icon" href="{SITE_URL}favicon.png" type="image/x-icon">
diff --git a/styles/templates/default/usercp_topic_watch.tpl b/styles/templates/default/usercp_topic_watch.tpl
index dd8629913..48d2e2e76 100644
--- a/styles/templates/default/usercp_topic_watch.tpl
+++ b/styles/templates/default/usercp_topic_watch.tpl
@@ -77,7 +77,7 @@
 <table cellpadding="2" cellspacing="0" width="100%">
     <tr>
         <td width="100%">
-            <h1 class="maintitle">{PAGE_TITLE}</h1>
+            <h1 class="pagetitle">{PAGE_TITLE}</h1>
             <div id="forums_top_links" class="nav">
                 <a href="{U_INDEX}">{T_INDEX}</a>&nbsp;<em>&middot;</em>
                 <span id="show-edit-btn"><a href="#">{L_EDIT_MY_MESSAGE_LIST}</a></span>
diff --git a/styles/templates/default/viewforum.tpl b/styles/templates/default/viewforum.tpl
index bf2b8d5a7..fdd6b3339 100644
--- a/styles/templates/default/viewforum.tpl
+++ b/styles/templates/default/viewforum.tpl
@@ -262,7 +262,7 @@ td.topic_id { cursor: pointer; }
 	<tr>
 		<td valign="bottom">
 			<h1 class="maintitle" style="margin-bottom: 0 !important;"><a href="{U_VIEW_FORUM}">{FORUM_NAME}</a></h1>
-			<p class="maintitle" style="font-size: 17px !important;">{FORUM_DESC}</p>
+			<p class="pagetitle" style="font-size: 17px;">{FORUM_DESC}</p>
 
 			<p class="small" id="moderators"><a style="text-decoration: none;" href="#">{L_MODERATORS}</a></p>
 			<script type="text/javascript">