From 01b432e3d2ac2313a90d55d06b3fa855c0b71330 Mon Sep 17 00:00:00 2001
From: Janito Vaqueiro Ferreira Filho <janito.vff@gmail.com>
Date: Mon, 18 Apr 2022 22:55:31 +0000
Subject: [PATCH] Add `Amount::serialize_as_string` helper method

A helper method that makes it easier to serialize an `Amount` as a
string. This is needed for the response type of the `getaccountbalance`
RPC.
---
 zebra-chain/src/amount.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/zebra-chain/src/amount.rs b/zebra-chain/src/amount.rs
index 7ca036acc..87e2d3b71 100644
--- a/zebra-chain/src/amount.rs
+++ b/zebra-chain/src/amount.rs
@@ -15,6 +15,7 @@ use std::{
 
 use crate::serialization::{ZcashDeserialize, ZcashSerialize};
 use byteorder::{ByteOrder, LittleEndian, ReadBytesExt, WriteBytesExt};
+use serde::Serializer;
 
 #[cfg(any(test, feature = "proptest-impl"))]
 pub mod arbitrary;
@@ -82,6 +83,16 @@ impl<C> Amount<C> {
     {
         0.try_into().expect("an amount of 0 is always valid")
     }
+
+    /// Serialize this [`Amount`] as a string instead of an integer.
+    ///
+    /// The string contains the amount of Zatoshis in the amount.
+    pub fn serialize_as_string<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(&self.0.to_string())
+    }
 }
 
 impl<C> std::ops::Add<Amount<C>> for Amount<C>