From cb9097e0199cf6afca3f144edb7d7addaec1cb59 Mon Sep 17 00:00:00 2001
From: Thomas Lange <code@nerdmind.de>
Date: Thu, 22 Jul 2021 21:04:02 +0200
Subject: Add pagination for search results

Add pagination for search results in the admin and default theme.
---
 core/include/search/main.php      | 23 ++++++++++++++++++++++-
 core/namespace/ORM/Repository.php | 24 ++++++++++++++++++------
 2 files changed, 40 insertions(+), 7 deletions(-)

(limited to 'core')

diff --git a/core/include/search/main.php b/core/include/search/main.php
index 564f0dd..14c2ac9 100644
--- a/core/include/search/main.php
+++ b/core/include/search/main.php
@@ -10,6 +10,16 @@ $Language = Application::getLanguage();
 $PostRepository = Application::getRepository('Post');
 $UserRepository = Application::getRepository('User');
 
+#===============================================================================
+# Pagination
+#===============================================================================
+$site_size = Application::get('POST.LIST_SIZE');
+$site_sort = Application::get('POST.LIST_SORT');
+
+$currentSite = HTTP::GET('site') ?? 1;
+$currentSite = intval($currentSite);
+$offset = ($currentSite-1) * $site_size;
+
 if($search = HTTP::GET('q')) {
 	$filter = [
 		'day'   => HTTP::GET('d'),
@@ -17,7 +27,7 @@ if($search = HTTP::GET('q')) {
 		'year'  => HTTP::GET('y')
 	];
 
-	if(!$posts = $PostRepository->search($search, $filter)) {
+	if(!$posts = $PostRepository->search($search, $filter, $site_size, $offset)) {
 		$message = $Language->text('search_no_results', escapeHTML($search));
 	}
 }
@@ -49,6 +59,9 @@ if(!empty($posts)) {
 		$templates[] = generatePostItemTemplate($Post, $User);
 	}
 
+	$count = $PostRepository->getLastSearchOverallCount();
+	$last = ceil($count / $site_size);
+
 	$ResultTemplate = Template\Factory::build('search/result');
 	$ResultTemplate->set('FORM', $form_data);
 	$ResultTemplate->set('SEARCH', $search_data);
@@ -56,6 +69,14 @@ if(!empty($posts)) {
 		'LIST' => $templates ?? []
 	]);
 
+	$ResultTemplate->set('PAGINATION', [
+		'THIS' => $currentSite,
+		'LAST' => $last,
+		'HTML' => createPaginationTemplate(
+			$currentSite, $last, Application::getURL('search/')
+		)
+	]);
+
 	$MainTemplate = Template\Factory::build('main');
 	$MainTemplate->set('HTML', $ResultTemplate);
 	$MainTemplate->set('HEAD', [
diff --git a/core/namespace/ORM/Repository.php b/core/namespace/ORM/Repository.php
index b2778f4..44bd62e 100644
--- a/core/namespace/ORM/Repository.php
+++ b/core/namespace/ORM/Repository.php
@@ -7,6 +7,9 @@ abstract class Repository {
 	protected $Database;
 	protected $entities = [];
 
+	# See "search" method for more details.
+	private $lastSearchOverallCount = 0;
+
 	abstract public static function getTableName(): string;
 	abstract public static function getClassName(): string;
 
@@ -262,10 +265,6 @@ abstract class Repository {
 	# Get entities based on search query
 	#===============================================================================
 	public function search(string $search, array $filter = [], int $limit = NULL, int $offset = 0): array {
-		if($search === '*') {
-			return $this->getAll([], NULL, 20);
-		}
-
 		if(strlen($filter['year'] ?? '') !== 0) {
 			$extend[] = 'YEAR(time_insert) = ? AND';
 			$params[] = $filter['year'];
@@ -287,14 +286,27 @@ abstract class Repository {
 
 		$dateparts = implode(' ', $extend ?? []);
 
-		$query = 'SELECT * FROM %s WHERE %s MATCH(name, body)
+		$query = 'SELECT *, COUNT(*) OVER() AS _count FROM %s WHERE %s MATCH(name, body)
 			AGAINST(? IN BOOLEAN MODE) %s';
 		$query = sprintf($query, static::getTableName(), $dateparts, $limit ?? 'LIMIT 20');
 
 		$Statement = $this->Database->prepare($query);
 		$Statement->execute(array_merge($params ?? [], [$search]));
 
-		return $this->fetchEntities($Statement);
+		if($entities = $this->fetchEntities($Statement)) {
+			# Temporary (maybe crappy) solution to prevent a second count query.
+			# Virtual column "_count" does not belong into the entities.
+			$this->lastSearchOverallCount = $entities[0]->get('_count');
+		}
+
+		return $entities;
+	}
+
+	#===============================================================================
+	# Get the number of overall results for the last performed search
+	#===============================================================================
+	public function getLastSearchOverallCount(): int {
+		return $this->lastSearchOverallCount;
 	}
 
 	#===============================================================================
-- 
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