Add settled_at to zaps, scope by settlement status

app/controllers/webhooks_controller.rb

@@ -8,12 +8,13 @@ class WebhooksController < ApplicationController
     @user = User.find_by!(ln_account: @payload[:user_login])
 
     if @zap = @user.zaps.find_by(payment_request: @payload[:payment_request])
+      settled_at = Time.parse(@payload[:settled_at])
       zap_receipt = NostrManager::CreateZapReceipt.call(
         zap: @zap,
-        paid_at: Time.parse(@payload[:settled_at]).to_i,
+        paid_at: settled_at.to_i,
         preimage: @payload[:preimage]
       )
-      @zap.update! receipt: zap_receipt.to_h
+      @zap.update! settled_at: settled_at, receipt: zap_receipt.to_h
       NostrManager::PublishZapReceipt.call(zap: @zap)
     end
 

app/models/zap.rb

@@ -1,6 +1,9 @@
 class Zap < ApplicationRecord
   belongs_to :user
 
+  scope :settled, -> { where.not(settled_at: nil) }
+  scope :unpaid, -> { where(settled_at: nil) }
+
   def request_event
     nostr_event_from_hash(request)
   end