From d2fa54725779fdbebef1fc9030688a7b22a129c0 Mon Sep 17 00:00:00 2001
From: Aaron van Geffen <aaron@aaronweb.net>
Date: Tue, 19 Dec 2023 17:16:57 +0100
Subject: [PATCH] PhotoMosaic: keep queue ordered by date captured

---
 models/AssetIterator.php | 19 ++++++++++++++++---
 models/PhotoMosaic.php   | 11 +++++++++++
 2 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/models/AssetIterator.php b/models/AssetIterator.php
index 3a50cf5e..94132aae 100644
--- a/models/AssetIterator.php
+++ b/models/AssetIterator.php
@@ -8,15 +8,18 @@
 
 class AssetIterator extends Asset
 {
+	private Database $db;
+	private $direction;
+
 	private $return_format;
 	private $res_assets;
 	private $res_meta;
 	private $res_thumbs;
-	private Database $db;
 
-	protected function __construct($res_assets, $res_meta, $res_thumbs, $return_format)
+	protected function __construct($res_assets, $res_meta, $res_thumbs, $return_format, $direction)
 	{
 		$this->db = Registry::get('db');
+		$this->direction = $direction;
 		$this->res_assets = $res_assets;
 		$this->res_meta = $res_meta;
 		$this->res_thumbs = $res_thumbs;
@@ -174,7 +177,7 @@ class AssetIterator extends Asset
 				'_' => '_',
 			]);
 
-		$iterator = new self($res_assets, $res_meta, $res_thumbs, $return_format);
+		$iterator = new self($res_assets, $res_meta, $res_thumbs, $return_format, $params['direction']);
 
 		// Returning total count, too?
 		if ($return_count)
@@ -190,4 +193,14 @@ class AssetIterator extends Asset
 		else
 			return $iterator;
 	}
+
+	public function isAscending()
+	{
+		return $this->direction === 'asc';
+	}
+
+	public function isDescending()
+	{
+		return $this->direction === 'desc';
+	}
 }
diff --git a/models/PhotoMosaic.php b/models/PhotoMosaic.php
index 68089ba8..949c52c7 100644
--- a/models/PhotoMosaic.php
+++ b/models/PhotoMosaic.php
@@ -8,6 +8,7 @@
 
 class PhotoMosaic
 {
+	private $descending;
 	private AssetIterator $iterator;
 	private $layouts;
 	private $processedImages = 0;
@@ -19,6 +20,7 @@ class PhotoMosaic
 	{
 		$this->iterator = $iterator;
 		$this->layouts = $this->availableLayouts();
+		$this->descending = $iterator->isDescending();
 	}
 
 	public function __destruct()
@@ -143,8 +145,17 @@ class PhotoMosaic
 		return -$priority_diff;
 	}
 
+	private function orderQueueByDate()
+	{
+		usort($this->queue, function($a, $b) {
+			$score = $a->getDateCaptured() <=> $b->getDateCaptured();
+			return $score * ($this->descending ? -1 : 1);
+		});
+	}
+
 	private function pushToQueue(Image $image)
 	{
 		$this->queue[] = $image;
+		$this->orderQueueByDate();
 	}
 }