Add special case memo handling

Author: peachbits

src/plugins/gui/providers/moonpayProvider.ts

@@ -1,7 +1,7 @@
 // import { div, gt, lt, mul, toFixed } from 'biggystring'
 import { mul } from 'biggystring'
 import { asArray, asBoolean, asEither, asNull, asNumber, asObject, asOptional, asString, asValue } from 'cleaners'
-import { EdgeAssetAction, EdgeSpendInfo, EdgeTokenId, EdgeTxActionFiat } from 'edge-core-js'
+import { EdgeAssetAction, EdgeMemo, EdgeSpendInfo, EdgeTokenId, EdgeTxActionFiat } from 'edge-core-js'
 import { sprintf } from 'sprintf-js'
 import URL from 'url-parse'
 
@@ -197,6 +197,24 @@ const NETWORK_CODE_PLUGINID_MAP: StringMap = {
   zksync: 'zksync'
 }
 
+// Special case memo creation for plugins
+// Memo type is not documented by Moonpay but can be inferred from /currencies response field "addressTagRegex"
+const createMemo = (pluginId: string, value: string): EdgeMemo => {
+  const memo: EdgeMemo = {
+    type: 'text',
+    value,
+    hidden: true
+  }
+
+  switch (pluginId) {
+    case 'ripple': {
+      memo.type = 'number'
+      memo.memoName = 'destination tag'
+    }    
+  }
+  return memo
+}
+
 const PAYMENT_TYPE_MAP: Partial<Record<FiatPaymentType, FiatPaymentType | undefined>> = {
   ach: 'ach',
   applepay: 'credit',
@@ -620,13 +638,7 @@ export const moonpayProvider: FiatProviderFactory = {
                         }
 
                         if (depositWalletAddressTag != null) {
-                          spendInfo.memos = [
-                            {
-                              type: 'text',
-                              value: depositWalletAddressTag,
-                              hidden: true
-                            }
-                          ]
+                          spendInfo.memos = [createMemo(coreWallet.currencyInfo.pluginId, depositWalletAddressTag)]
                         }
 
                         const sendParams: SendScene2Params = {