Refactor tag file, remove subtitle

CHDataManagement/Model/LocalizedTag.swift

@@ -12,36 +12,31 @@ final class LocalizedTag: ObservableObject {
     var name: String
 
     @Published
-    var subtitle: String?
+    var linkPreviewTitle: String?
 
     @Published
-    var description: String?
+    var linkPreviewDescription: String?
 
     /// The image id of the thumbnail
     @Published
     var linkPreviewImage: FileResource?
 
-    @Published
-    var linkPreviewTitle: String?
-
     /// The original url in the previous site layout
     let originalUrl: String?
 
     init(content: Content,
          urlComponent: String,
          name: String,
-         subtitle: String? = nil,
-         description: String? = nil,
-         thumbnail: FileResource? = nil,
          linkPreviewTitle: String? = nil,
+         linkPreviewDescription: String? = nil,
+         linkPreviewImage: FileResource? = nil,
          originalUrl: String? = nil) {
         self.content = content
         self.urlComponent = urlComponent
         self.name = name
-        self.subtitle = subtitle
-        self.description = description
-        self.linkPreviewImage = thumbnail
         self.linkPreviewTitle = linkPreviewTitle
+        self.linkPreviewDescription = linkPreviewDescription
+        self.linkPreviewImage = linkPreviewImage
         self.originalUrl = originalUrl
     }
 
@@ -58,7 +53,16 @@ final class LocalizedTag: ObservableObject {
 
 extension LocalizedTag: LinkPreviewItem {
 
-    var linkPreviewDescription: String? {
-        description
+}
+
+extension LocalizedTag {
+
+    var tagFile: LocalizedTagFile {
+        .init(urlComponent: urlComponent,
+              name: name,
+              linkPreviewTitle: linkPreviewTitle,
+              linkPreviewDescription: linkPreviewDescription,
+              linkPreviewImage: linkPreviewImage?.id,
+              originalURL: originalUrl)
     }
 }