WIP show fees of Lightning transactions

app/controllers/wallet_controller.rb

@@ -78,6 +78,7 @@ class WalletController < ApplicationController
         tx["received"] = true
       else
         tx["amount_sats"] = tx["value"] || tx["amt"]
+        tx["fee"] = tx["type"] == "paid_invoice" ? tx["fee"] : nil
         tx["datetime"] = Time.at(tx["timestamp"].to_i)
         tx["title"] = tx["type"] == "paid_invoice" ? "Sent" : "Received"
         tx["description"] = tx["memo"] || tx["description"]

app/views/wallet/transactions.html.erb

@@ -35,7 +35,8 @@
             </p>
             <p class="col-span-4 md:col-span-1 md:text-right mb-0">
               <span class="col-span-2 md:col-span-1 text-sm text-gray-500">
-                <%= tx["datetime"].strftime("%B %e, %H:%M") %>
+                <%= tx["datetime"].strftime("%B %e, %H:%M") -%>
+                <% if tx["fee"] && (tx["fee"] > 0) %>, Fee: <%= tx["fee"] %> sats<% end %>
               </span>
             </p>
           </li>