Changed last search query tracking to server-side

Recent changes to last search query handling still haven't fixed all
possible routes, so I've simplified the whole thing at expense of clean
URLs.

public_html/media/js/core.js

@@ -25,12 +25,6 @@ function getCookie(name)
 	return unescape(value.substring(start, end));
 }
 
-function rememberLastSearchQuery()
-{
-	var lastSearchQuery = $('#settings').attr('data-last-search-query');
-	setCookie('last-search-query', lastSearchQuery);
-}
-
 //core functionalities, prototypes
 function getJSON(data)
 {
@@ -52,7 +46,6 @@ function postJSON(data)
 
 function getHtml(data)
 {
-	rememberLastSearchQuery();
 	return $.get(data);
 }
 
@@ -77,19 +70,6 @@ $.fn.bindOnce = function(name, eventName, callback)
 //basic event listeners
 $(function()
 {
-	$(window).on('beforeunload', function()
-	{
-		rememberLastSearchQuery();
-	});
-	if (window.history && window.history.pushState)
-	{
-		$(window).on('popstate', function()
-		{
-			rememberLastSearchQuery();
-		});
-	}
-	rememberLastSearchQuery();
-
 	$('body').bind('dom-update', function()
 	{
 		//event confirmations

src/Controllers/PostController.php

@@ -11,7 +11,6 @@ class PostController extends AbstractController
 		{
 			$query = trim($query);
 			$context->transport->searchQuery = $query;
-			$context->transport->lastSearchQuery = $query;
 			if ($source == 'mass-tag')
 			{
 				Access::assert(new Privilege(Privilege::MassTag));
@@ -49,7 +48,6 @@ class PostController extends AbstractController
 		$additionalInfo = trim(InputHelper::get('tag'));
 
 		$context->transport->searchQuery = $query;
-		$context->transport->lastSearchQuery = $query;
 		if (strpos($query, '/') !== false)
 			throw new SimpleException('Search query contains invalid characters');
 
@@ -284,7 +282,7 @@ class PostController extends AbstractController
 		$this->redirectToGenericView($identifier);
 	}
 
-	public function genericView($identifier)
+	public function genericView($identifier, $query = null)
 	{
 		$context = Core::getContext();
 
@@ -294,17 +292,17 @@ class PostController extends AbstractController
 
 		try
 		{
-			$context->transport->lastSearchQuery = InputHelper::get('last-search-query');
+			$context->transport->searchQuery = $query;
 			list ($prevPostId, $nextPostId) =
 				PostSearchService::getPostIdsAround(
-					$context->transport->lastSearchQuery, $identifier);
+					$context->transport->searchQuery, $identifier);
 		}
 		#search for some reason was invalid, e.g. tag was deleted in the meantime
 		catch (Exception $e)
 		{
-			$context->transport->lastSearchQuery = '';
+			$context->transport->searchQuery = '';
 			list ($prevPostId, $nextPostId) =
-				PostSearchService::getPostIdsAround($context->transport->lastSearchQuery, $identifier);
+				PostSearchService::getPostIdsAround($context->transport->searchQuery, $identifier);
 		}
 
 		$isUserFavorite = Auth::getCurrentUser()->hasFavorited($post);

src/Router.php

@@ -63,8 +63,9 @@ class Router extends \Chibi\Routing\Router
 		$this->register(['PostController', 'listView'], 'GET', '/{source}/{query}/{additionalInfo}/{page}', $postValidation);
 		$this->register(['PostController', 'listRedirectAction'], 'POST', '/{source}-redirect', $postValidation);
 
-		$this->register(['PostController', 'genericView'], 'GET', '/post/{identifier}', $postValidation);
 		$this->register(['PostController', 'fileView'], 'GET', '/post/{name}/retrieve', $postValidation);
+		$this->register(['PostController', 'genericView'], 'GET', '/post/{identifier}', $postValidation);
+		$this->register(['PostController', 'genericView'], 'GET', '/post/{identifier}/search={query}', $postValidation);
 		$this->register(['PostController', 'thumbnailView'], 'GET', '/post/{name}/thumb', $postValidation);
 
 		$this->register(['PostController', 'toggleTagAction'], null, '/post/{identifier}/toggle-tag/{tag}/{enable}', $postValidation);

src/Views/post/post-small.phtml

@@ -45,7 +45,11 @@ if ($masstag)
 		<?php if (Auth::getCurrentUser()->getSettings()->hasEnabledPostTagTitles()): ?>
 			title="<?= TextHelper::reprTags($this->context->post->getTags()) ?>"
 		<?php endif ?>
-		href="<?= Core::getRouter()->linkTo(['PostController', 'genericView'], ['identifier' => $this->context->post->getId()]) ?>">
+		href="<?= Core::getRouter()->linkTo(['PostController', 'genericView'],
+			empty($this->context->transport->searchQuery)
+				? ['identifier' => $this->context->post->getId()]
+				: ['identifier' => $this->context->post->getId(),
+					'query' => $this->context->transport->searchQuery]) ?>">
 
 		<img
 			class="thumb"

src/Views/post/post-view.phtml

@@ -33,7 +33,10 @@ $canEditAnything = count(array_filter($editPostPrivileges)) > 0;
 			<?php if ($this->context->transport->nextPostId): ?>
 				<a href="<?= Core::getRouter()->linkTo(
 					['PostController', 'genericView'],
-					['identifier' => $this->context->transport->nextPostId]) ?>">
+					empty($this->context->transport->searchQuery)
+						? ['identifier' => $this->context->transport->nextPostId]
+						: ['identifier' => $this->context->transport->nextPostId,
+							'query' => $this->context->transport->searchQuery]) ?>">
 			<?php else: ?>
 				<a class="disabled">
 			<?php endif ?>
@@ -46,7 +49,10 @@ $canEditAnything = count(array_filter($editPostPrivileges)) > 0;
 			<?php if ($this->context->transport->prevPostId): ?>
 				<a href="<?= Core::getRouter()->linkTo(
 					['PostController', 'genericView'],
-					['identifier' => $this->context->transport->prevPostId]) ?>">
+					empty($this->context->transport->searchQuery)
+						? ['identifier' => $this->context->transport->prevPostId]
+						: ['identifier' => $this->context->transport->prevPostId,
+							'query' => $this->context->transport->searchQuery]) ?>">
 			<?php else: ?>
 				<a class="disabled">
 			<?php endif ?>
@@ -57,13 +63,13 @@ $canEditAnything = count(array_filter($editPostPrivileges)) > 0;
 
 		<div class="clear"></div>
 
-		<?php if (!empty($this->context->transport->lastSearchQuery)): ?>
+		<?php if (!empty($this->context->transport->searchQuery)): ?>
 			<div class="text">
 				Current&nbsp;search:<br/>
 				<a href="<?= Core::getRouter()->linkTo(
 					['PostController', 'listView'],
-					['query' => $this->context->transport->lastSearchQuery]) ?>">
+					['query' => $this->context->transport->searchQuery]) ?>">
-					<?= $this->context->transport->lastSearchQuery ?>
+					<?= $this->context->transport->searchQuery ?>
 				</a>
 			</div>
 		<?php endif ?>