Create page from post

CHDataManagement/Model/Post.swift

@@ -17,7 +17,7 @@ final class Post: Item, DateItem, LocalizedItem {
     var hasEndDate: Bool
 
     @Published
-    var endDate: Date
+    var potentialEndDate: Date
 
     /**
      The tags associated with the post
@@ -52,7 +52,7 @@ final class Post: Item, DateItem, LocalizedItem {
         self.createdDate = createdDate
         self.startDate = startDate
         self.hasEndDate = endDate != nil
-        self.endDate = endDate ?? startDate
+        self.potentialEndDate = endDate ?? startDate
         self.tags = tags
         self.german = german
         self.english = english
@@ -143,6 +143,34 @@ final class Post: Item, DateItem, LocalizedItem {
         english.remove(file)
         german.remove(file)
     }
+
+    func makePage() -> Page {
+        var id = self.id
+        var number = 2
+        while !content.isNewIdForPage(id) {
+            id += "\(self.id)-\(number)"
+            number += 1
+        }
+        // Move tags to page
+        let tags = self.tags
+        self.tags = []
+
+        let german = english.makePage(urlString: id + "-de")
+        let english = english.makePage(urlString: id + "-en")
+        return Page(
+            content: content,
+            id: id,
+            externalLink: nil,
+            isDraft: true,
+            createdDate: .now,
+            hideDate: false,
+            startDate: startDate,
+            endDate: endDate,
+            german: german,
+            english: english,
+            tags: tags,
+            requiredFiles: [])
+    }
 }
 
 extension Post {
@@ -177,7 +205,7 @@ extension Post {
             isDraft: isDraft,
             createdDate: createdDate,
             startDate: startDate,
-            endDate: hasEndDate ? endDate : nil,
+            endDate: endDate,
             tags: tags.map { $0.id },
             german: german.data,
             english: english.data,