Rework storage structs, link preview

CHDataManagement/Model/LocalizedPage.swift

@@ -35,13 +35,7 @@ final class LocalizedPage: ObservableObject {
     let originalUrl: String?
 
     @Published
-    var linkPreviewImage: FileResource?
-
-    @Published
-    var linkPreviewTitle: String?
-
-    @Published
-    var linkPreviewDescription: String?
+    var linkPreview: LinkPreview
 
     @Published
     var hideTitle: Bool
@@ -51,18 +45,14 @@ final class LocalizedPage: ObservableObject {
          title: String,
          lastModified: Date? = nil,
          originalUrl: String? = nil,
-         linkPreviewImage: FileResource? = nil,
-         linkPreviewTitle: String? = nil,
-         linkPreviewDescription: String? = nil,
+         linkPreview: LinkPreview = .init(),
          hideTitle: Bool = false) {
         self.content = content
         self.urlString = urlString
         self.title = title
         self.lastModified = lastModified
         self.originalUrl = originalUrl
-        self.linkPreviewImage = linkPreviewImage
-        self.linkPreviewTitle = linkPreviewTitle
-        self.linkPreviewDescription = linkPreviewDescription
+        self.linkPreview = linkPreview
         self.hideTitle = hideTitle
     }
     
@@ -72,6 +62,37 @@ final class LocalizedPage: ObservableObject {
     }
 }
 
-extension LocalizedPage: LinkPreviewItem {
 
+extension LocalizedPage {
+
+    convenience init(context: LoadingContext, data: LocalizedPage.Data) {
+        self.init(
+            content: context.content,
+            urlString: data.url,
+            title: data.title,
+            lastModified: data.lastModifiedDate,
+            originalUrl: data.originalURL,
+            linkPreview: .init(context: context, data: data.linkPreview),
+            hideTitle: data.hideTitle ?? false)
+    }
+
+    /// The structure to store the metadata of a localized page
+    struct Data: Codable {
+        let url: String
+        let title: String
+        let linkPreview: LinkPreview.Data
+        let lastModifiedDate: Date?
+        let originalURL: String?
+        let hideTitle: Bool?
+    }
+
+    var data: Data {
+        .init(
+            url: urlString,
+            title: title,
+            linkPreview: linkPreview.data,
+            lastModifiedDate: lastModified,
+            originalURL: originalUrl,
+            hideTitle: hideTitle ? true : nil)
+    }
 }