Set new post ids

CHDataManagement/Views/Posts/PostList.swift

@@ -5,6 +5,12 @@ struct PostList: View {
     @EnvironmentObject
     private var content: Content
 
+    @State
+    private var showNewPostIdSheet = false
+
+    @State
+    private var newPostId = ""
+
     var body: some View {
         List {
             if content.posts.isEmpty {
@@ -15,7 +21,7 @@ struct PostList: View {
                 .listRowSeparator(.hidden)
             }
             HorizontalCenter {
-                Button(action: addNewPost) {
+                Button(action: { showNewPostIdSheet = true }) {
                     Text("Add post")
                 }
                 .padding()
@@ -31,12 +37,24 @@ struct PostList: View {
             }
         }
         .listStyle(.plain)
-        //.scrollContentBackground(.hidden)
+        .sheet(isPresented: $showNewPostIdSheet, onDismiss: addNewPost) {
+            TextEntrySheet(title: "Enter the new post id", text: $newPostId)
+        }
     }
 
     private func addNewPost() {
+        let id = newPostId.trimmingCharacters(in: .whitespacesAndNewlines)
+        guard id != "" else {
+            return
+        }
+
+        guard !content.posts.contains(where: { $0.id == id }) else {
+            print("ID \(id) already exists")
+            return
+        }
+
         let post = Post(
-            id: "new",
+            id: id,
             isDraft: true,
             createdDate: .now,
             startDate: .now,