Convert None case to 0 in API response (#1207)

* Covert `None` case to `0` in API Response

* Extract balance and dust_allowed

* Update CHANGELOG.md

bee-api/bee-rest-api/CHANGELOG.md

@@ -19,10 +19,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Security -->
 
-## 0.2.1 - 2022-02-28
+## 0.2.1 - 2022-03-04
+
+### Changed
 
 - Update `bee-gossip` dependency to 0.5.0;
 
+### Fixed
+
+- Convert `None` to `0` for balance response;
+
 ## 0.2.0 - 2022-01-28
 
 ### Added

bee-api/bee-rest-api/src/endpoints/routes/api/v1/balance_ed25519.rs

@@ -59,18 +59,21 @@ pub(crate) async fn balance_ed25519(
  "unable to fetch the balance of the address".to_string(),
  ))
  })? {
- (Ok(response), ledger_index) => match response {
- Some(balance) => Ok(warp::reply::json(&SuccessBody::new(BalanceAddressResponse {
+ (Ok(response), ledger_index) => {
+ let (balance, dust_allowed) = if let Some(balance) = response {
+ (balance.amount(), balance.dust_allowed())
+ } else {
+ (0, false)
+ };
+
+ Ok(warp::reply::json(&SuccessBody::new(BalanceAddressResponse {
  address_type: Ed25519Address::KIND,
  address: addr.to_string(),
- balance: balance.amount(),
- dust_allowed: balance.dust_allowed(),
+ balance,
+ dust_allowed,
  ledger_index: *ledger_index,
- }))),
- None => Err(reject::custom(CustomRejection::NotFound(
- "balance not found".to_string(),
- ))),
- },
+ })))
+ }
  (Err(e), _) => {
  error!("unable to fetch the balance of the address: {}", e);
  Err(reject::custom(CustomRejection::ServiceUnavailable(