add replacement functionality for assignment descriptions

ucfopen · May 13, 2024 · 35c319e · 35c319e
1 parent 7f4657d
commit 35c319e
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Showing 2 changed files with 59 additions and 3 deletions.
diff --git a/src/Lms/Canvas/CanvasApi.php b/src/Lms/Canvas/CanvasApi.php
@@ -106,7 +106,7 @@ public function apiPost($url, $options, $sendAuthorized = true)
     }
 
     // Posts a file to Canvas
-    public function apiFilePost(string $url, array $options, string $filepath, string $newFileName, $moduleInstances = null, $courseId = null, $replacePages = null) : LmsResponse
+    public function apiFilePost(string $url, array $options, string $filepath, string $newFileName, $moduleInstances = null, $courseId = null, $replacePages = null, $replaceAssignments = null) : LmsResponse
     {
         $fileResponse = $this->apiGet($url);
         $file = $fileResponse->getContent();
@@ -188,6 +188,30 @@ public function apiFilePost(string $url, array $options, string $filepath, strin
             }
         }
 
+        if ($replaceAssignments) {
+            foreach ($replaceAssignments as $assignment) {
+                $dom = new \DOMDocument();
+                $dom->loadHTML($assignment['description']);
+                $anchors = $dom->getElementsByTagName('a');
+                foreach ($anchors as $anchor) {
+                    preg_match('/files\/(\d+)/', $anchor->getAttribute('href'), $matches);
+                    if (isset($matches[1]) && $matches[1] == $file['id']) {
+                        $anchor->setAttribute('href', $fileResponseContent['url']);
+                        $anchor->setAttribute('title', $newFileName);
+                        $anchor->nodeValue = $newFileName;
+                    }
+                    $assignment['description'] = $dom->saveHTML();
+                    $response = $this->apiPut("courses/{$courseId}/assignments/{$assignment['id']}", [
+                        'json' => [
+                            'assignment' => [
+                                'description' => $assignment['description'],
+                            ],
+                        ],
+                    ]);
+                }
+            }
+        }
+
         return $fileResponse;
     }
 
@@ -286,4 +310,11 @@ public function showPage($courseId, $pageId)
         return $response->getContent();
     }
 
+    public function listAssignments($courseId)
+    {
+        $url = "courses/{$courseId}/assignments";
+        $response = $this->apiGet($url);
+        return $response->getContent();
+    }
+
 }
diff --git a/src/Lms/Canvas/CanvasLms.php b/src/Lms/Canvas/CanvasLms.php
@@ -378,8 +378,10 @@ public function postFileItem(FileItem $file, string $newFileName)
         $canvasApi = new CanvasApi($apiDomain, $apiToken);
         $modules = $canvasApi->listModules($file->getCourse()->getLmsCourseId());
         $pages = $canvasApi->listPages($file->getCourse()->getLmsCourseId());
+        $assignments = $canvasApi->listAssignments($file->getCourse()->getLmsCourseId());
         $refillModules = [];
         $changePages = [];
+        $changeAssignments = [];
 
         // Delete any existing module items with the same file name
         foreach ($modules as $module) {
@@ -393,7 +395,7 @@ public function postFileItem(FileItem $file, string $newFileName)
             }
         }
 
-        // Find all pages that contain this file in their HTML
+        // Find all wiki pages that contain this file in their HTML
         foreach ($pages as $page) {
             $dom = new \DOMDocument();
             $dom->loadHTML($page['body']);
@@ -407,13 +409,20 @@ public function postFileItem(FileItem $file, string $newFileName)
             }
         }
 
+        // Find all assignments that contain this file in their description HTML
+        foreach ($assignments as $assignment) {
+            if ($this->fileIsInLink($file->getLmsFileId(), $assignment['description'])) {
+                $changeAssignments[] = $assignment;
+            }
+        }
+
         $url = "courses/{$file->getCourse()->getLmsCourseId()}/files/{$file->getLmsFileId()}";
         $filepath = $this->util->getTempPath() . '/file.' . $file->getId();
         $options = [
             'postUrl' => "courses/{$file->getCourse()->getLmsCourseId()}/files"
         ];
 
-        $fileResponse = $canvasApi->apiFilePost($url, $options, $filepath, $newFileName, $refillModules, $file->getCourse()->getLmsCourseId(), $changePages);
+        $fileResponse = $canvasApi->apiFilePost($url, $options, $filepath, $newFileName, $refillModules, $file->getCourse()->getLmsCourseId(), $changePages, $changeAssignments);
         $fileObj = $fileResponse->getContent();
 
         if (isset($fileObj['id'])) {
@@ -535,6 +544,22 @@ public function getContentTypes()
      * PROTECTED FUNCTIONS
      **********************/
 
+    protected function fileIsInLink($fileId, $html)
+    {
+        $dom = new \DOMDocument();
+        $dom->loadHTML($html);
+        $anchors = $dom->getElementsByTagName('a');
+
+        foreach ($anchors as $anchor) {
+            preg_match('/files\/(\d+)/', $anchor->getAttribute('href'), $matches);
+            if(isset($matches[1]) && $matches[1] == $fileId) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
     protected function getAccountInfo(User $user, $accountId)
     {
         $url = "accounts/${accountId}";