Add nip05 search

Changelog-Added: Added ability to lookup users by nip05 identifiers

damus/Views/Search/SearchingEventView.swift

@@ -17,12 +17,14 @@ enum SearchState {
 enum SearchType {
     case event
     case profile
+    case nip05
 }
 
 struct SearchingEventView: View {
     let state: DamusState
     let evid: String
     let search_type: SearchType
+    
     @State var search_state: SearchState = .searching
     
     var bech32_evid: String {
@@ -35,6 +37,8 @@ struct SearchingEventView: View {
     
     var search_name: String {
         switch search_type {
+        case .nip05:
+            return "nip05"
         case .profile:
             return "profile"
         case .event:
@@ -67,9 +71,39 @@ struct SearchingEventView: View {
                 Text("\(search_name.capitalized) not found", comment: "When a note or profile is not found when searching for it via its note id")
             }
         }
-        .onAppear {
+        .onChange(of: evid, debounceTime: 0.5) { evid in
+            self.search_state = .searching
             
             switch search_type {
+            case .nip05:
+                if let pk = state.profiles.nip05_pubkey[evid] {
+                    if state.profiles.lookup(id: pk) != nil {
+                        self.search_state = .found_profile(pk)
+                    }
+                } else {
+                    Task.init {
+                        guard let nip05 = NIP05.parse(evid) else {
+                            self.search_state = .not_found
+                            return
+                        }
+                        guard let nip05_resp = await fetch_nip05(nip05: nip05) else {
+                            DispatchQueue.main.async {
+                                self.search_state = .not_found
+                            }
+                            return
+                        }
+                        
+                        DispatchQueue.main.async {
+                            guard let pk = nip05_resp.names[nip05.username] else {
+                                self.search_state = .not_found
+                                return
+                            }
+                            
+                            self.search_state = .found_profile(pk)
+                        }
+                    }
+                }
+                
             case .event:
                 if let ev = state.events.lookup(evid) {
                     self.search_state = .found(ev)

damus/Views/SearchResultsView.swift

@@ -12,6 +12,7 @@ enum Search {
     case hashtag(String)
     case profile(String)
     case note(String)
+    case nip05(String)
     case hex(String)
 }
 
@@ -41,6 +42,10 @@ struct SearchResultsView: View {
                     NavigationLink(destination: dst) {
                         Text("Search hashtag: #\(ht)", comment: "Navigation link to search hashtag.")
                     }
+                    
+                case .nip05(let addr):
+                    SearchingEventView(state: damus_state, evid: addr, search_type: .nip05)
+                    
                 case .profile(let prof):
                     let decoded = try? bech32_decode(prof)
                     let hex = hex_encode(decoded!.data)
@@ -95,6 +100,12 @@ func search_for_string(profiles: Profiles, _ new: String) -> Search? {
         return nil
     }
     
+    let splitted = new.split(separator: "@")
+    
+    if splitted.count == 2 {
+        return .nip05(new)
+    }
+    
     if new.first! == "#" {
         let ht = String(new.dropFirst().filter{$0 != " "})
         return .hashtag(ht)