Initial NIP05 code

Also add the ability to login with a NIP05 id

damus/ContentView.swift

@@ -9,7 +9,7 @@ import SwiftUI
 import Starscream
 import Kingfisher
 
-let BOOTSTRAP_RELAYS = [
+var BOOTSTRAP_RELAYS = [
     "wss://relay.damus.io",
     "wss://nostr-relay.wlvs.space",
     "wss://nostr.oxtr.dev",

damus/Views/LoginView.swift

@@ -11,11 +11,16 @@ enum ParsedKey {
     case pub(String)
     case priv(String)
     case hex(String)
+    case nip05(String)
 
     var is_pub: Bool {
         if case .pub = self {
             return true
         }
+
+        if case .nip05 = self {
+            return true
+        }
         return false
     }
 
@@ -44,6 +49,55 @@ struct LoginView: View {
         return nil
     }
 
+    func process_login(_ key: ParsedKey, is_pubkey: Bool) -> Bool {
+        switch key {
+        case .priv(let priv):
+            save_privkey(privkey: priv)
+            guard let pk = privkey_to_pubkey(privkey: priv) else {
+                return false
+            }
+            save_pubkey(pubkey: pk)
+
+        case .pub(let pub):
+            clear_saved_privkey()
+            save_pubkey(pubkey: pub)
+
+        case .nip05(let id):
+            Task.init {
+                guard let nip05 = await get_nip05_pubkey(id: id) else {
+                    self.error = "Could not fetch pubkey"
+                    return
+                }
+
+                for relay in nip05.relays {
+                    if !(BOOTSTRAP_RELAYS.contains { $0 == relay }) {
+                        BOOTSTRAP_RELAYS.append(relay)
+                    }
+                }
+                save_pubkey(pubkey: nip05.pubkey)
+
+                notify(.login, ())
+            }
+
+
+        case .hex(let hexstr):
+            if is_pubkey {
+                clear_saved_privkey()
+                save_pubkey(pubkey: hexstr)
+            } else {
+                save_privkey(privkey: hexstr)
+                guard let pk = privkey_to_pubkey(privkey: hexstr) else {
+                    return false
+                }
+                save_pubkey(pubkey: pk)
+            }
+        }
+
+    notify(.login, ())
+    return true
+}
+
+
     var body: some View {
         ZStack(alignment: .top) {
             DamusGradient()
@@ -113,10 +167,15 @@ func parse_key(_ thekey: String) -> ParsedKey? {
     if key.count > 0 && key.first! == "@" {
         key = String(key.dropFirst())
     }
+
     if hex_decode(key) != nil {
         return .hex(key)
     }
 
+    if (key.contains { $0 == "@" }) {
+        return .nip05(key)
+    }
+
     if let bech_key = decode_bech32_key(key) {
         switch bech_key {
         case .pub(let pk):
@@ -129,34 +188,50 @@ func parse_key(_ thekey: String) -> ParsedKey? {
     return nil
 }
 
-func process_login(_ key: ParsedKey, is_pubkey: Bool) -> Bool {
-    switch key {
-    case .priv(let priv):
-        save_privkey(privkey: priv)
-        guard let pk = privkey_to_pubkey(privkey: priv) else {
-            return false
-        }
-        save_pubkey(pubkey: pk)
+struct NIP05Result: Decodable {
+    let names: Dictionary<String, String>
+    let relays: Dictionary<String, [String]>?
+}
 
-    case .pub(let pub):
-        clear_saved_privkey()
-        save_pubkey(pubkey: pub)
+struct NIP05User {
+    let pubkey: String
+    let relays: [String]
+}
 
-    case .hex(let hexstr):
-        if is_pubkey {
-            clear_saved_privkey()
-            save_pubkey(pubkey: hexstr)
-        } else {
-            save_privkey(privkey: hexstr)
-            guard let pk = privkey_to_pubkey(privkey: hexstr) else {
-                return false
+func get_nip05_pubkey(id: String) async -> NIP05User? {
+    let parts = id.components(separatedBy: "@")
+
+    guard parts.count == 2 else {
+        return nil
     }
-            save_pubkey(pubkey: pk)
+
+    let user = parts[0]
+    let host = parts[1]
+
+    guard let url = URL(string: "https://\(host)/.well-known/nostr.json?name=\(user)") else {
+        return nil
+    }
+
+    guard let (data, _) = try? await URLSession.shared.data(for: URLRequest(url: url)) else {
+        return nil
+    }
+
+    guard let json: NIP05Result = decode_data(data) else {
+        return nil
+    }
+
+    guard let pubkey = json.names[user] else {
+        return nil
+    }
+
+    var relays: [String] = []
+    if let rs = json.relays {
+        if let rs = rs[user] {
+            relays = rs
         }
     }
 
-    notify(.login, ())
-    return true
+    return NIP05User(pubkey: pubkey, relays: relays)
 }
 
 struct KeyInput: View {