From 790cb0d7a96fe00b5e5f755a6430a41838404407 Mon Sep 17 00:00:00 2001
From: Daku <dakutree@codeanimu.net>
Date: Thu, 16 Jan 2014 08:31:34 +0000
Subject: [PATCH] [.+]tags metatag for tag_categories This is nowhere as near
 as fast as I'd like. Need to find a better query.

---
 ext/tag_categories/main.php | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/ext/tag_categories/main.php b/ext/tag_categories/main.php
index 4a5dcffa..285a18e8 100644
--- a/ext/tag_categories/main.php
+++ b/ext/tag_categories/main.php
@@ -48,6 +48,30 @@ class TagCategories extends Extension {
 		}
 	}
 
+	public function onSearchTermParse(SearchTermParseEvent $event) {
+		$matches = array();
+
+		if(preg_match("/^(.+)tags([:]?<|[:]?>|[:]?<=|[:]?>=|[:|=])([0-9]+)$/", $event->term, $matches)) {
+			global $database;
+			$type = $matches[1];
+			$cmp = ltrim($matches[2], ":") ?: "=";
+			$count = $matches[3];
+
+			$types = $database->get_col('SELECT category FROM image_tag_categories');
+			if(in_array($type, $types)) {
+				$event->add_querylet(new Querylet("images.id IN (
+													SELECT * FROM (
+														SELECT it.image_id
+														FROM image_tags it
+														LEFT JOIN tags t ON it.tag_id = t.id
+														GROUP BY image_id
+														HAVING SUM(CASE WHEN t.tag LIKE '$type:%' THEN 1 ELSE 0 END) $cmp $count
+													) AS subquery
+												   )"));
+			}
+		}
+	}
+
 	public function getDict() {
 		global $database;