add a RelayLog to each RelayConnection and send events to it

Signed-off-by: Bryan Montz <bryanmontz@me.com>
Signed-off-by: William Casarin <jb55@jb55.com>

damus/Nostr/RelayConnection.swift

@@ -49,6 +49,7 @@ final class RelayConnection: ObservableObject {
     
     private var handleEvent: (NostrConnectionEvent) -> ()
     private let url: RelayURL
+    var log: RelayLog?
 
     init(url: RelayURL, handleEvent: @escaping (NostrConnectionEvent) -> ()) {
         self.url = url
@@ -59,11 +60,13 @@ final class RelayConnection: ObservableObject {
         socket.ping { err in
             if err == nil {
                 self.last_pong = .now
+                self.log?.add("Successful ping")
             } else {
                 print("pong failed, reconnecting \(self.url.id)")
                 self.isConnected = false
                 self.isConnecting = false
                 self.reconnect_with_backoff()
+                self.log?.add("Ping failed")
             }
         }
     }
@@ -153,6 +156,10 @@ final class RelayConnection: ObservableObject {
         DispatchQueue.main.async {
             self.handleEvent(.ws_event(event))
         }
+        
+        if let description = event.description {
+            log?.add(description)
+        }
     }
     
     func reconnect_with_backoff() {
@@ -166,6 +173,7 @@ final class RelayConnection: ObservableObject {
         }
         disconnect()
         connect()
+        log?.add("Reconnecting...")
     }
     
     func reconnect_in(after: TimeInterval) {

damus/Nostr/WebSocket.swift

@@ -19,7 +19,7 @@ enum WebSocketEvent {
         case .connected:
             return "Connected"
         case .message(_):
-            return "Received message"
+            return nil  // adding this to the RelayLog was too noisy
         case .disconnected(let close_code, let reason):
             return "Disconnected: Close code: \(close_code), reason: \(reason ?? "unknown")"
         case .error(let error):