internal/canvas/client.go

@@ -22,6 +22,7 @@ type Client struct {
 	CourseID        string
 	CourseName      string
 	FilesOnly       bool
+	downloadedFiles map[string]bool
 }
 
 func NewClient(httpClient *http.Client, accessToken, courseID string, filesOnly bool) *Client {
@@ -30,6 +31,7 @@ func NewClient(httpClient *http.Client, accessToken, courseID string, filesOnly
 		AccessToken:     accessToken,
 		CourseID:        courseID,
 		FilesOnly:       filesOnly,
+		downloadedFiles: make(map[string]bool),
 	}
 }
 
@@ -82,6 +84,13 @@ func (c *Client) DownloadCourseFiles(root string) {
 	fileCount := 0
 	for _, file := range files {
 
+		if c.FilesOnly {
+			if c.downloadedFiles[file.DisplayName] {
+				continue
+			}
+			c.downloadedFiles[file.DisplayName] = true
+		}
+
 		rawFolderPath := folderMap[file.FolderID]
 		safeFolderPath := utils.SanitizePath(rawFolderPath)
 
@@ -223,11 +232,18 @@ func (c *Client) downloadModuleFile(item models.ModuleItem, dir string) {
 		return
 	}
 
+	if c.FilesOnly {
+		if c.downloadedFiles[fileMeta.DisplayName] {
+			return
+		}
+		c.downloadedFiles[fileMeta.DisplayName] = true
+	}
+
 	ext := filepath.Ext(fileMeta.DisplayName)
 	origBase := strings.TrimSuffix(fileMeta.DisplayName, ext)
 
 	fileName := fileMeta.DisplayName
-	if !strings.EqualFold(origBase, item.Title) && item.Title != "" {
+	if !c.FilesOnly && !strings.EqualFold(origBase, item.Title) && item.Title != "" {
 		fileName = fmt.Sprintf("%s (%s)%s", origBase, item.Title, ext)
 	}