From 254630ab67b4d51547b3ab29cd4b5af9da12918e Mon Sep 17 00:00:00 2001
From: Matthias Grief <matthias.grief@alumni.fh-aachen.de>
Date: Thu, 2 Jan 2025 18:28:04 +0100
Subject: [PATCH] =?UTF-8?q?Bearbeitung=20von=20=C3=9Cbungsbl=C3=A4ttern=20?=
 =?UTF-8?q?eingef=C3=BCgt?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 webseite/classes/TopicData.php |  8 +++--
 webseite/topicEditor.php       | 54 +++++++++++++++++++++++++++++-----
 2 files changed, 52 insertions(+), 10 deletions(-)

diff --git a/webseite/classes/TopicData.php b/webseite/classes/TopicData.php
index 67f6a31..0247342 100644
--- a/webseite/classes/TopicData.php
+++ b/webseite/classes/TopicData.php
@@ -226,7 +226,7 @@ class TopicData
         }
 
         $result->cleanupRelatedTopics();
-        $result->cleanupFiles();
+        //$result->cleanupFiles();
 
         return $result;
     }
@@ -238,7 +238,7 @@ class TopicData
     public function save(): bool
     {
         $this->cleanupRelatedTopics();
-        $this->cleanupFiles();
+        //$this->cleanupFiles();
 
         $data = array();
         $data["displayName"] = $this->displayName;
@@ -316,11 +316,13 @@ class TopicData
      */
     public function deleteDownload(string $name): bool
     {
-        if (!isset($this->files[$name])) {
+        if (!in_array($name, $this->files)) {
+            echo "a";
             return false;
         }
 
         if (!unlink(Config::getTopicDirectory($this->getSubjectId(), $this->getId()) . "downloads/$name")) {
+            echo "b";
             return false;
         }
 
diff --git a/webseite/topicEditor.php b/webseite/topicEditor.php
index fb0a55c..86d4634 100644
--- a/webseite/topicEditor.php
+++ b/webseite/topicEditor.php
@@ -15,6 +15,7 @@ $defaultValues['subjectId'] = "";
 $defaultValues['description'] = "";
 $defaultValues['icon'] = "";
 $defaultValues['relatedTopics'] = "";
+$defaultValues['existing_files'] = "";
 $defaultValues['article'] = "";
 
 $errors = array();
@@ -29,6 +30,7 @@ if (isset($_GET['subject']) && isset($_GET['topic'])) {
         $defaultValues['description'] = $editingTopic->getDescription();
         $defaultValues['icon'] = $editingTopic->getIcon();
         $defaultValues['relatedTopics'] = implode(", ", $editingTopic->getRelatedTopics());
+        $defaultValues['existing_files'] = implode(", ", $editingTopic->getFiles());
         $defaultValues['article'] = $editingTopic->getFinishedArticle();
     }
 } else if(isset($_GET['subject'])) {
@@ -80,8 +82,16 @@ if($_SERVER['REQUEST_METHOD'] == 'POST') {
             $relatedTopics[] = $relatedTopic;
         }
 
-        $article = htmlentities($_POST['article'], ENT_HTML401, 'UTF-8');
+        $existingFiles = array();
+        foreach (explode(",", $_POST['existing_files']) as $existingTopic) {
+            $existingTopic = trim($existingTopic);
+            if($existingTopic == "") {
+                continue;
+            }
+            $existingFiles[] = trim($existingTopic);
+        }
 
+        $article = htmlentities($_POST['article'], ENT_HTML401, 'UTF-8');
         $dom = new DOMDocument();
         $dom->encoding = 'UTF-8';
         $dom->loadHTML($article, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
@@ -114,6 +124,7 @@ if($_SERVER['REQUEST_METHOD'] == 'POST') {
             $htmlImage->setAttribute("src", '__TOPICPATH__/' . $imagename);
         }
 
+        // extension=mbstring in php.ini muss aktiviert sein!
         $article = mb_convert_encoding($dom->saveHTML(), 'UTF-8', 'HTML-ENTITIES');
 
         if(isset($allSubjects[$_POST['subjectId']]->getTopics()[$_POST['id']])) {
@@ -123,8 +134,12 @@ if($_SERVER['REQUEST_METHOD'] == 'POST') {
             $newTopic->setSubjectId($_POST['subjectId']);
             $newTopic->setDescription($_POST['description']);
             $newTopic->setIcon($_POST['icon']);
-
             $newTopic->setRelatedTopics($relatedTopics);
+            foreach ($newTopic->getFiles() as $file) {
+                if(!in_array($file, $existingFiles)) {
+                    $newTopic->deleteDownload($file);
+                }
+            }
             $newTopic->setArticle($article);
         } else {
             $newTopic = TopicData::createNew($_POST['id'], $_POST['subjectId'], $_POST['displayName'], $_POST['icon'], $_POST['description'], $relatedTopics, $article);
@@ -133,6 +148,10 @@ if($_SERVER['REQUEST_METHOD'] == 'POST') {
         if(!$newTopic) {
             $errors["error"] = "Fehler beim Speichern des Themas.";
         } else {
+            for($i = 0; $i < count($_FILES['new_files']['name']); $i++) {
+                !$newTopic->addDownload($_FILES['new_files']['name'][$i], $_FILES['new_files']['tmp_name'][$i]);
+            }
+
             foreach ($newImages as $name => $image) {
                 $newTopic->uploadImage($name, $image);
             }
@@ -174,7 +193,7 @@ if($_SERVER['REQUEST_METHOD'] == 'POST') {
 
 <body class="min-h-screen bg-gray-50">
 
-<form id="topicForm" method="post" class="space-y-8">
+<form id="topicForm" method="post" enctype="multipart/form-data" class="space-y-8">
     <div class="grid grid-cols-1 xl:grid-cols-2 gap-8">
         <!-- Left column - Topic details -->
         <div class="space-y-6">
@@ -227,6 +246,29 @@ if($_SERVER['REQUEST_METHOD'] == 'POST') {
                 <input class="mt-1 block w-full rounded-lg border-gray-300 shadow-sm" type="text"
                        name="relatedTopics" id="relatedTopicSelect" value="<?php echo $defaultValues['relatedTopics']; ?>">
             </div>
+
+            <div>
+                <label for="existing_files" class="block text-sm font-medium text-gray-700">
+                    Existierende Übungsblätter</label>
+                <input class="mt-1 block w-full rounded-lg border-gray-300 shadow-sm" type="text" name="existing_files" id="existing_files" value="<?php echo $defaultValues['existing_files']; ?>">
+            </div>
+
+            <div class="flex gap-2">
+
+                <!--
+                <div class="rounded-md bg-slate-800 py-0.5 px-2.5 border border-transparent text-sm text-white transition-all shadow-sm">
+
+                    Chip
+                    <button class="pl-1" onclick=""><i class="fa fa-x"></i></button>
+                </div>
+                -->
+            </div>
+
+            <div>
+                <label for="new_files" class="block text-sm font-medium text-gray-700">
+                    Übungsblätter hinzufügen</label>
+                <input type="file" name="new_files[]" id="new_files" multiple>
+            </div>
         </div>
 
         <!-- Right column - Editor -->
@@ -246,14 +288,12 @@ if($_SERVER['REQUEST_METHOD'] == 'POST') {
                     </div>
                 </div>
 
-                <div id="quillEditor" style="height: 400px;" class="bg-white border rounded-lg">
-                    <?php
+                <div id="quillEditor" style="height: 400px;" class="bg-white border rounded-lg"><?php
                     $article = $defaultValues['article'];
 
                     echo $article;
 
-                    ?>
-                </div>
+                    ?></div>
             </div>
         </div>
     </div>