From 45010810f72e38ae50fb64270044fa16beb09c0b Mon Sep 17 00:00:00 2001
From: Matthias Grief <matthias.grief@alumni.fh-aachen.de>
Date: Mon, 9 Dec 2024 12:37:47 +0100
Subject: [PATCH] =?UTF-8?q?Themen=20entfern-=20und=20hinzuf=C3=BCgbar=20ge?=
 =?UTF-8?q?macht?=
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---
 webseite/classes/SubjectData.php | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/webseite/classes/SubjectData.php b/webseite/classes/SubjectData.php
index 487326c..49fa157 100644
--- a/webseite/classes/SubjectData.php
+++ b/webseite/classes/SubjectData.php
@@ -167,6 +167,36 @@ class SubjectData
         return true;
     }
 
+    /**
+     * Fügt ein neues Thema zum Fach hinzu
+     * @param TopicData $topic Das neue Thema
+     * @return bool true, wenn erfolgreich, sonst false
+     */
+    public function addTopic(TopicData $topic): bool
+    {
+        if(isset($this->topics[$topic->getId()])) {
+            return false;
+        }
+
+        $this->topics[] = $topic;
+        return true;
+    }
+
+    /**
+     * Entfernt ein Thema vom Fach
+     * @param TopicData $topic Das zu entfernende Thema
+     * @return bool true, wenn erfolgreich, sonst false
+     */
+    public function removeTopic(TopicData $topic): bool
+    {
+        if(!isset($this->topics[$topic->getId()])) {
+            return false;
+        }
+
+        $this->topics = array_diff($this->topics, [$topic]);
+        return true;
+    }
+
     public function getId(): string
     {
         return $this->id;