Generate open graph meta tags

CHDataManagement/Generator/Page Generators/FeedPageGenerator.swift

@@ -24,9 +24,11 @@ final class FeedPageGenerator {
 
     func generatePage(language: ContentLanguage,
                       posts: [FeedEntryData],
-                      title: String,
+                      title: String?,
                       description: String?,
-                      showTitle: Bool,
+                      image: FileResource?,
+                      pageUrl: String,
+                      pageTitle: String?,
                       pageNumber: Int,
                       totalPages: Int,
                       languageButtonUrl: String,
@@ -44,10 +46,14 @@ final class FeedPageGenerator {
             text: language.next.rawValue,
             url: languageButtonUrl)
 
+        let imageUrl = image?.linkPreviewImage(results: results)
+
         let pageHeader = PageHeader(
             language: language,
-            title: title,
+            title: title ?? pageTitle,
             description: description,
+            image: imageUrl,
+            pageUrl: pageUrl,
             iconUrl: iconUrl,
             languageButton: languageButton,
             links: content.navigationBar(in: language),
@@ -57,8 +63,8 @@ final class FeedPageGenerator {
         let page = GenericPage(
             header: pageHeader,
             additionalFooter: footer) { content in
-                if showTitle {
-                    content += "<h1 class='separated-headline'>\(title)</h1>"
+                if let pageTitle {
+                    content += "<h1 class='separated-headline'>\(pageTitle)</h1>"
                 }
                 for post in posts {
                     content += FeedEntry(data: post).content