fix: simplify replace branch in _request_redeem

Author: nakul1010

crates/redeem/src/lib.rs

@@ -614,26 +614,13 @@ impl<T: Config> Pallet<T> {
                 ext::fee::get_redeem_fee::<T>(&amount_wrapped)?
             };
 
-            // only allow requests of amount above above the minimum
-            ensure!(
-                // this is the amount the vault will send
-                amount_wrapped.ge(&Self::get_dust_value(vault_id.wrapped_currency()))?,
-                Error::<T>::AmountBelowDustAmount
-            );
-
-            // increased the to_be_redeem tokens by amount_wrapped - fee_wrapped
-            ext::vault_registry::try_increase_to_be_redeemed_tokens::<T>(
-                &vault_id,
-                &amount_wrapped.checked_sub(&fee_wrapped)?,
-            )?;
-
             (
                 fee_wrapped,
                 // the inclusion fee is paid by old vault itself hence we can set it as zero
                 Amount::zero(vault_id.wrapped_currency()),
                 // the new vault (redeemer) should receive the whole amount without deduction of fees
                 // as fee handling is done by old vault itself
-                amount_wrapped,
+                amount_wrapped.clone(),
             )
         } else {
             let redeemer_balance =
@@ -657,20 +644,24 @@ impl<T: Config> Pallet<T> {
                 .checked_sub(&inclusion_fee)
                 .map_err(|_| Error::<T>::AmountBelowDustAmount)?;
 
-            // only allow requests of amount above above the minimum
-            ensure!(
-                // this is the amount the vault will send (minus fee)
-                user_to_be_received_btc.ge(&Self::get_dust_value(vault_id.wrapped_currency()))?,
-                Error::<T>::AmountBelowDustAmount
-            );
-
-            // vault will get rid of the btc + btc_inclusion_fee
-            ext::vault_registry::try_increase_to_be_redeemed_tokens::<T>(&vault_id, &vault_to_be_burned_tokens)?;
             amount_wrapped.lock_on(redeemer.get_account())?;
 
             (fee_wrapped, inclusion_fee, user_to_be_received_btc)
         };
 
+        // only allow requests of amount above above the minimum
+        ensure!(
+            // this is the amount the vault will send
+            user_to_be_received_btc.ge(&Self::get_dust_value(vault_id.wrapped_currency()))?,
+            Error::<T>::AmountBelowDustAmount
+        );
+
+        // increased the to_be_redeem tokens by amount_wrapped - fee_wrapped
+        ext::vault_registry::try_increase_to_be_redeemed_tokens::<T>(
+            &vault_id,
+            &amount_wrapped.checked_sub(&fee_wrapped)?,
+        )?;
+
         let redeem_id = ext::security::get_secure_id::<T>(redeemer.get_account());
 
         let below_premium_redeem = ext::vault_registry::is_vault_below_premium_threshold::<T>(&vault_id)?;