From b925062456f90ab0bc32a3f6063aca7295095bc6 Mon Sep 17 00:00:00 2001
From: jeroenrnl <jeroen@zoph.org>
Date: Wed, 13 Apr 2016 22:57:43 +0200
Subject: [PATCH] Select a random photo from a configured album as logon
 background

Issue #72
---
 php/classes/album.inc.php | 13 +++++++++++++
 php/classes/photo.inc.php | 13 +++++++++++++
 php/image.php             | 26 +++++++++++++++++---------
 3 files changed, 43 insertions(+), 9 deletions(-)

diff --git a/php/classes/album.inc.php b/php/classes/album.inc.php
index 27c2445..647d759 100644
--- a/php/classes/album.inc.php
+++ b/php/classes/album.inc.php
@@ -284,6 +284,19 @@ public function getTotalPhotoCount() {
         return $qry->getCount();
     }
 
+    /**
+     * Get the photos in this album
+     * Does NOT check user permissions!
+     */
+    public function getPhotos() {
+        $qry=new select(array("pa" => "photo_albums"));
+        $qry->addFields(array("photo_id" => "pa.photo_id"));
+        $qry->where(new clause("pa.album_id = :alb_id"));
+        $qry->addParam(new param(":alb_id", $this->getId(), PDO::PARAM_INT));
+
+        return photo::getRecordsFromQuery($qry);
+    }
+
     /**
      * Get array of fields/values to create an edit form
      * @return array fields/values
diff --git a/php/classes/photo.inc.php b/php/classes/photo.inc.php
index bd5ad2f..0cde9e9 100644
--- a/php/classes/photo.inc.php
+++ b/php/classes/photo.inc.php
@@ -137,6 +137,18 @@ public function lookup() {
         return $photo;
     }
 
+    /**
+     * Lookup a photo, ignoring access rights
+     */
+    public function lookupAll() {
+        $qry = new select(array("p" => "photos"));
+        $qry->where(new clause("p.photo_id=:photoid"));
+        $qry->addParam(new param(":photoid", (int) $this->getId(), PDO::PARAM_INT));
+        $photo = $this->lookupFromSQL($qry);
+        return $photo;
+    }
+
+
     /**
      * Lookup photographer of this photo
      */
@@ -1245,6 +1257,7 @@ public static function getByName($file, $path=null) {
      * @return string SHA1 hash
      */
     private function getHashFromFile() {
+        $this->lookupAll();
         $file=$this->getFilePath();
         if (file_exists($file)) {
             return sha1_file($file);
diff --git a/php/image.php b/php/image.php
index 9154f2b..f0c88c1 100644
--- a/php/image.php
+++ b/php/image.php
@@ -75,15 +75,23 @@
     $photo = new photo($photo_id);
     $found = $photo->lookup();
 } else if ($type=="background") {
-    $templates=array(
-        conf::get("interface.template"),
-        "default"
-    );
-    foreach ($templates as $template) {
-        $bgs=glob(settings::$php_loc . "/templates/" . $template . "/images/backgrounds/*.{jpg,JPG}", GLOB_BRACE);
-        if (sizeof($bgs) > 0) {
-            $image=$bgs[array_rand($bgs)];
-            redirect("templates/" . $template . "/images/backgrounds/" . basename($image));
+    if (conf::get("interface.logon.background.album")) {
+        $album=new album(conf::get("interface.logon.background.album"));
+        $photos=$album->getPhotos();
+        $photo=$photos[array_rand($photos)];
+        $photo->lookup();
+        redirect("image.php?hash=" . $photo->getHash("full"));
+    } else {
+        $templates=array(
+            conf::get("interface.template"),
+            "default"
+        );
+        foreach ($templates as $template) {
+            $bgs=glob(settings::$php_loc . "/templates/" . $template . "/images/backgrounds/*.{jpg,JPG}", GLOB_BRACE);
+            if (sizeof($bgs) > 0) {
+                $image=$bgs[array_rand($bgs)];
+                redirect("templates/" . $template . "/images/backgrounds/" . basename($image));
+            }
         }
     }
     exit;