feat: add lastUsedMachineName field to GraphQL customer type

lib/new-admin/graphql/resolvers/customer.resolver.js

@@ -3,15 +3,22 @@ const anonymous = require('../../../constants').anonymousCustomer
 const customers = require('../../../customers')
 const filters = require('../../filters')
 const customerNotes = require('../../../customer-notes')
+const machineLoader = require('../../../machine-loader')
+
+const getCustomerById = customerId =>
+  customers.getCustomerById(customerId)
+    .then(customer =>
+      machineLoader.getMachineName(customer.lastUsedMachine)
+        .then(lastUsedMachineName => Object.assign(customer, { lastUsedMachineName }))
+    )
 
 const resolvers = {
-
   Customer: {
     isAnonymous: parent => (parent.customerId === anonymous.uuid)
   },
   Query: {
     customers: (...[, { phone, email, name, address, id }]) => customers.getCustomersList(phone, name, address, id, email),
-    customer: (...[, { customerId }]) => customers.getCustomerById(customerId),
+    customer: (...[, { customerId }]) => getCustomerById(customerId),
     customerFilters: () => filters.customer()
   },
   Mutation: {

lib/new-admin/graphql/types/customer.type.js

@@ -34,6 +34,7 @@ const typeDef = gql`
     lastTxFiatCode: String
     lastTxClass: String
     lastUsedMachine: String
+    lastUsedMachineName: String
     transactions: [Transaction]
     subscriberInfo: JSONObject
     phoneOverride: String