From 0a2778aa6642de539853ab4ecb7d566c0be05f2d Mon Sep 17 00:00:00 2001
From: Jim Mason <jmason@ibinx.com>
Date: Wed, 18 Oct 2023 09:50:16 +0100
Subject: [PATCH] allow camelcase hashtags; show tags from more recent reviews
 last

---
 ui/Search.php | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/ui/Search.php b/ui/Search.php
index 303bf3a5..387e20f0 100644
--- a/ui/Search.php
+++ b/ui/Search.php
@@ -34,6 +34,8 @@
 use ZK\UI\UICommon as UI;
 
 class Search extends MenuItem {
+    const HASHTAG_PALETTE_SIZE = 5;  // css colours palette-0..palette-(n-1)
+
     private static $legacySearchActions = [
         [ "", "searchForm" ],
         [ "byAlbumKey", "searchByAlbumKey" ],
@@ -128,14 +130,15 @@ public function searchByAlbumKey($key = null) {
         $this->addVar("reviews", $reviews);
 
         // hashtags
-        $hashtags = array_reduce($reviews, function($carry, $review) {
+        $hashtags = array_reduce(array_reverse($reviews), function($carry, $review) {
             return preg_match_all('/#[\pL_]+/', $review['review'], $matches) ?
                 array_merge($carry, $matches[0]) : $carry;
         }, []);
-        $hashtags = array_unique(array_map('strtolower', $hashtags));
+        $normalized = array_unique(array_map('strtolower', $hashtags));
+        $hashtags = array_intersect_key($hashtags, $normalized);
         $index = array_map(function($tag) {
-            return hexdec(hash('crc32', $tag)) % 5;
-        }, $hashtags);
+            return hexdec(hash('crc32', $tag)) % self::HASHTAG_PALETTE_SIZE;
+        }, $normalized);
         $this->addVar("hashtags", array_combine($hashtags, $index));
 
         // tracks