Add validation to prevent whitespaces be inputted on NIP-05 input field

This reverts commit 57006b928b.

damus/Models/Mentions.swift

@@ -94,6 +94,14 @@ enum Block {
         return nil
     }
     
+    var is_note_mention: Bool {
+        guard case .mention(let mention) = self else {
+            return false
+        }
+        
+        return mention.type == .event
+    }
+    
     var is_mention: Bool {
         if case .mention = self {
             return true

damus/Views/EditMetadataView.swift

@@ -6,6 +6,7 @@
 //
 
 import SwiftUI
+import Combine
 
 let PPM_SIZE: CGFloat = 80.0
 let BANNER_HEIGHT: CGFloat = 150.0;
@@ -196,6 +197,9 @@ struct EditMetadataView: View {
                     TextField(NSLocalizedString("jb55@jb55.com", comment: "Placeholder example text for identifier used for NIP-05 verification."), text: $nip05)
                         .autocorrectionDisabled(true)
                         .textInputAutocapitalization(.never)
+                        .onReceive(Just(nip05)) { newValue in
+                            self.nip05 = newValue.trimmingCharacters(in: .whitespaces)
+                        }
                 }, header: {
                     Text("NIP-05 Verification", comment: "Label for NIP-05 Verification section of user profile form.")
                 }, footer: {

damus/Views/NoteContentView.swift

@@ -240,6 +240,7 @@ struct NoteArtifacts {
 
 func render_note_content(ev: NostrEvent, profiles: Profiles, privkey: String?) -> NoteArtifacts {
     let blocks = ev.blocks(privkey)
+    
     return render_blocks(blocks: blocks, profiles: profiles, privkey: privkey)
 }
 
@@ -247,9 +248,17 @@ func render_blocks(blocks: [Block], profiles: Profiles, privkey: String?) -> Not
     var invoices: [Invoice] = []
     var img_urls: [URL] = []
     var link_urls: [URL] = []
+    
+    let one_note_ref = blocks
+        .filter({ $0.is_note_mention })
+        .count == 1
+    
     let txt: AttributedString = blocks.reduce("") { str, block in
         switch block {
         case .mention(let m):
+            if m.type == .event && one_note_ref {
+                return str
+            }
             return str + mention_str(m, profiles: profiles)
         case .text(let txt):
             return str + AttributedString(stringLiteral: txt)

damus/Views/Timeline/InnerTimelineView.swift

@@ -42,10 +42,10 @@ struct InnerTimelineView: View {
                             nav_target = ev.inner_event ?? ev
                             navigating = true
                         }
-                        .padding(.top, 10)
+                        .padding(.top, 7)
                     
                     Divider()
-                        .padding([.top], 10)
+                        .padding([.top], 7)
                 }
             }
         }