WIP Persist zaps, create and send zap receipts

app/controllers/lnurlpay_controller.rb

@@ -52,7 +52,7 @@ class LnurlpayController < ApplicationController
       return
     end
 
-    if params[:nostr].present?
+    if params[:nostr].present?# TODO && Setting.nostr_enabled?
       handle_zap_request amount, params[:nostr], params[:lnurl]
     else
       handle_pay_request address, amount, comment
@@ -131,6 +131,9 @@ class LnurlpayController < ApplicationController
         return
       end
 
+      # TODO might want to use the existing invoice and zap record if there are
+      # multiple calls with the same zap request
+
       desc = "Zap for #{@user.address}"
       desc = "#{desc}: \"#{event.content}\"" if event.content.present?
 
@@ -142,6 +145,10 @@ class LnurlpayController < ApplicationController
         }
       )
 
+      @user.zaps.create! request: event,
+                         payment_request: invoice["payment_request"],
+                         amount: amount
+
       render json: { status: "OK", pr: invoice["payment_request"] }
     end
 end

app/controllers/webhooks_controller.rb

@@ -7,10 +7,14 @@ class WebhooksController < ApplicationController
   def lndhub
     @user = User.find_by!(ln_account: @payload[:user_login])
 
-    if @zap_request = fetch_nostr_event_from_description
-      NostrManager::PublishZapReceipt.call(
-        user: @user, zap_request: @zap_request
+    if zap = @user.zaps.find_by(payment_request: @payload[:payment_request])
+      zap_receipt = NostrManager::CreateZapReceipt.call(
+        zap: zap,
+        paid_at: Time.parse(@payload[:settled_at]).to_i,
+        preimage: @payload[:preimage]
       )
+      zap.update! receipt: zap_receipt.to_h
+      NostrManager::PublishZapReceipt.call(zap: zap)
     end
 
     send_notifications
@@ -28,21 +32,16 @@ class WebhooksController < ApplicationController
 
   def process_payload
     @payload = JSON.parse(request.body.read, symbolize_names: true)
-    head :no_content and return unless @payload[:type] == "incoming"
+    unless @payload[:type] == "incoming" &&
+           @payload[:state] == "settled"
+      head :no_content and return
+    end
   rescue
     head :unprocessable_entity and return
   end
 
-  def fetch_nostr_event_from_description
-    memo_json = JSON.parse(@payload[:memo])
-    Nostr::Event.new(**memo_json.to_h.symbolize_keys)
-  rescue
-    nil
-  end
-
   def send_notifications
-    notify = @user.preferences[:lightning_notify_sats_received]
-    case notify
+    case @user.preferences[:lightning_notify_sats_received]
     when "xmpp"
       notify_xmpp
     when "email"