Add timeout for fetching latest event

app/services/nostr_manager/fetch_latest_event.rb

@@ -1,5 +1,6 @@
 module NostrManager
   class FetchLatestEvent < NostrManagerService
+    TIMEOUT = 5
 
     def initialize(relays:, filter:, max_events: 2)
       @relays = relays
@@ -11,21 +12,33 @@ module NostrManager
       received_events = 0
       events = []
 
-      @relays.each do |url|
-        event = NostrManager::FetchEvent.call(filter: @filter, relay_url: url)
+      begin
+        Timeout.timeout(TIMEOUT) do
+          @relays.each do |url|
+            event = NostrManager::FetchEvent.call(filter: @filter, relay_url: url)
 
-        if event.present?
-          events << event if events.none? { |e| e["id"] == event["id"] }
-          received_events += 1
+            if event.present?
+              events << event if events.none? { |e| e["id"] == event["id"] }
+              received_events += 1
+            end
+
+            if received_events >= @max_events
+              Rails.logger.debug "Found #{@max_events} events, ending the search"
+              break
+            end
+          end
+
+          events.min_by { |e| e["created_at"] }
         end
-
-        if received_events >= @max_events
-          Rails.logger.debug "Found #{@max_events} events, ending the search"
-          break
+      rescue Timeout::Error
+        if events.size == 1
+          Rails.logger.debug "[nostr] Timeout: only found 1 event within #{TIMEOUT} seconds for filter: #{@filter.inspect}"
+          events.first
+        else
+          Rails.logger.debug "[nostr] Timeout: no events found within #{TIMEOUT} seconds for filter: #{@filter.inspect}"
+          nil
         end
       end
-
-      events.min_by { |e| e["created_at"] }
     end
   end
 end