support pay by mail over grpc api

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

@@ -60,18 +60,19 @@ public final class PaymentAccountForm implements PersistablePayload {
 
     public enum FormId {
         BLOCK_CHAINS,
+        FASTER_PAYMENTS,
+        F2F,
+        MONEY_GRAM,
+        PAXUM,
+        PAY_BY_MAIL,
         REVOLUT,
         SEPA,
         SEPA_INSTANT,
-        TRANSFERWISE,
-        ZELLE,
-        SWIFT,
-        F2F,
         STRIKE,
-        MONEY_GRAM,
+        SWIFT,
-        FASTER_PAYMENTS,
+        TRANSFERWISE,
         UPHOLD,
-        PAXUM;
+        ZELLE;
 
         public static PaymentAccountForm.FormId fromProto(protobuf.PaymentAccountForm.FormId formId) {
             return ProtoUtil.enumFromProto(PaymentAccountForm.FormId.class, formId.name());

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

@@ -19,6 +19,7 @@ package haveno.core.payment;
 
 import haveno.core.api.model.PaymentAccountFormField;
 import haveno.core.locale.CurrencyUtil;
+import haveno.core.locale.Res;
 import haveno.core.locale.TradeCurrency;
 import haveno.core.payment.payload.PayByMailAccountPayload;
 import haveno.core.payment.payload.PaymentAccountPayload;
@@ -35,6 +36,15 @@ public final class PayByMailAccount extends PaymentAccount {
         super(PaymentMethod.PAY_BY_MAIL);
     }
 
+    private static final List<PaymentAccountFormField.FieldId> INPUT_FIELD_IDS = List.of(
+        PaymentAccountFormField.FieldId.TRADE_CURRENCIES,
+        PaymentAccountFormField.FieldId.CONTACT,
+        PaymentAccountFormField.FieldId.POSTAL_ADDRESS,
+        PaymentAccountFormField.FieldId.EXTRA_INFO,
+        PaymentAccountFormField.FieldId.ACCOUNT_NAME,
+        PaymentAccountFormField.FieldId.SALT
+    );
+
     @Override
     protected PaymentAccountPayload createPayload() {
         return new PayByMailAccountPayload(paymentMethod.getId(), id);
@@ -47,7 +57,7 @@ public final class PayByMailAccount extends PaymentAccount {
 
     @Override
     public @NonNull List<PaymentAccountFormField.FieldId> getInputFieldIds() {
-        throw new RuntimeException("Not implemented");
+        return INPUT_FIELD_IDS;
     }
 
     public void setPostalAddress(String postalAddress) {
@@ -73,4 +83,14 @@ public final class PayByMailAccount extends PaymentAccount {
     public String getExtraInfo() {
         return ((PayByMailAccountPayload) paymentAccountPayload).getExtraInfo();
     }
+
+    @Override
+    protected PaymentAccountFormField getEmptyFormField(PaymentAccountFormField.FieldId fieldId) {
+        var field = super.getEmptyFormField(fieldId);
+        if (field.getId() == PaymentAccountFormField.FieldId.TRADE_CURRENCIES) field.setComponent(PaymentAccountFormField.Component.SELECT_ONE);
+        if (field.getId() == PaymentAccountFormField.FieldId.CONTACT) field.setLabel(Res.get("payment.payByMail.contact.prompt"));
+        if (field.getId() == PaymentAccountFormField.FieldId.POSTAL_ADDRESS) field.setLabel(Res.get("payment.postal.address"));
+        if (field.getId() == PaymentAccountFormField.FieldId.EXTRA_INFO) field.setLabel(Res.get("payment.shared.optionalExtra"));
+        return field;
+    }
 }

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

@@ -28,6 +28,7 @@ import haveno.core.locale.BankUtil;
 import haveno.core.locale.Country;
 import haveno.core.locale.CountryUtil;
 import haveno.core.locale.CurrencyUtil;
+import haveno.core.locale.Res;
 import haveno.core.locale.TradeCurrency;
 import haveno.core.payment.payload.PaymentAccountPayload;
 import haveno.core.payment.payload.PaymentMethod;
@@ -501,7 +502,8 @@ public abstract class PaymentAccount implements PersistablePayload {
         case PIX_KEY:
             throw new IllegalArgumentException("Not implemented");
         case POSTAL_ADDRESS:
-            throw new IllegalArgumentException("Not implemented");
+            processValidationResult(new InputValidator().validate(value));
+            break;
         case PROMPT_PAY_ID:
             throw new IllegalArgumentException("Not implemented");
         case QUESTION:
@@ -709,7 +711,9 @@ public abstract class PaymentAccount implements PersistablePayload {
         case PIX_KEY:
             throw new IllegalArgumentException("Not implemented");
         case POSTAL_ADDRESS:
-            throw new IllegalArgumentException("Not implemented");
+            field.setComponent(PaymentAccountFormField.Component.TEXTAREA);
+            field.setLabel(Res.get("payment.postal.address"));
+            break;
         case PROMPT_PAY_ID:
             throw new IllegalArgumentException("Not implemented");
         case QUESTION:

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

@@ -345,7 +345,8 @@ public final class PaymentMethod implements PersistablePayload, Comparable<Payme
                 MONEY_GRAM_ID,
                 FASTER_PAYMENTS_ID,
                 UPHOLD_ID,
-                PAXUM_ID);
+                PAXUM_ID,
+                PAY_BY_MAIL_ID);
         return paymentMethods.stream().filter(paymentMethod -> paymentMethodIds.contains(paymentMethod.getId())).collect(Collectors.toList());
     }
 

proto/src/main/proto/pb.proto

@@ -1840,6 +1840,7 @@ message PaymentAccountForm {
         FASTER_PAYMENTS = 10;
         UPHOLD = 11;
         PAXUM = 12;
+        PAY_BY_MAIL = 13;
     }
     FormId id = 1;
     repeated PaymentAccountFormField fields = 2;