support wechat pay grpc api

Author: woodser

core/src/main/java/haveno/core/api/model/PaymentAccountForm.java

@@ -78,7 +78,8 @@ public enum FormId {
         CASH_APP,
         PAYPAL,
         VENMO,
-        PAYSAFE;
+        PAYSAFE,
+        WECHAT_PAY;
 
         public static PaymentAccountForm.FormId fromProto(protobuf.PaymentAccountForm.FormId formId) {
             return ProtoUtil.enumFromProto(PaymentAccountForm.FormId.class, formId.name());

core/src/main/java/haveno/core/payment/WeChatPayAccount.java

@@ -38,6 +38,13 @@ public final class WeChatPayAccount extends PaymentAccount {
             new TraditionalCurrency("GBP")
     );
 
+    private static final List<PaymentAccountFormField.FieldId> INPUT_FIELD_IDS = List.of(
+            PaymentAccountFormField.FieldId.ACCOUNT_NAME,
+            PaymentAccountFormField.FieldId.ACCOUNT_NR,
+            PaymentAccountFormField.FieldId.TRADE_CURRENCIES,
+            PaymentAccountFormField.FieldId.SALT
+    );
+
     public WeChatPayAccount() {
         super(PaymentMethod.WECHAT_PAY);
     }
@@ -54,7 +61,7 @@ protected PaymentAccountPayload createPayload() {
 
     @Override
     public @NonNull List<PaymentAccountFormField.FieldId> getInputFieldIds() {
-        throw new RuntimeException("Not implemented");
+        return INPUT_FIELD_IDS;
     }
 
     public void setAccountNr(String accountNr) {

core/src/main/java/haveno/core/payment/payload/PaymentMethod.java

@@ -369,7 +369,8 @@ public static List<PaymentMethod> getPaymentMethods() {
                 CASH_APP_ID,
                 PAYPAL_ID,
                 VENMO_ID,
-                PAYSAFE_ID);
+                PAYSAFE_ID,
+                WECHAT_PAY_ID);
         return paymentMethods.stream().filter(paymentMethod -> paymentMethodIds.contains(paymentMethod.getId())).collect(Collectors.toList());
     }
 

proto/src/main/proto/pb.proto

@@ -1903,6 +1903,7 @@ message PaymentAccountForm {
         PAYPAL = 17;
         VENMO = 18;
         PAYSAFE = 19;
+        WECHAT_PAY = 20;
     }
     FormId id = 1;
     repeated PaymentAccountFormField fields = 2;