From 13010845fbbac79f313afb37cbbe2918d606ad3e Mon Sep 17 00:00:00 2001
From: laruh <oblomoff616@gmail.com>
Date: Thu, 7 Nov 2024 19:28:10 +0700
Subject: [PATCH] review: remove redundant validation

---
 mm2src/coins/eth/eth_swap_v2/eth_maker_swap_v2.rs | 13 +++++++------
 mm2src/coins/eth/eth_swap_v2/eth_taker_swap_v2.rs | 13 +++++++------
 mm2src/coins/eth/eth_swap_v2/mod.rs               | 12 +-----------
 3 files changed, 15 insertions(+), 23 deletions(-)

diff --git a/mm2src/coins/eth/eth_swap_v2/eth_maker_swap_v2.rs b/mm2src/coins/eth/eth_swap_v2/eth_maker_swap_v2.rs
index 8837b8ce0d..3089604ede 100644
--- a/mm2src/coins/eth/eth_swap_v2/eth_maker_swap_v2.rs
+++ b/mm2src/coins/eth/eth_swap_v2/eth_maker_swap_v2.rs
@@ -1,4 +1,4 @@
-use super::{validate_from_to_and_status, validate_payment_args, EthPaymentType, PaymentMethod, PrepareTxDataError,
+use super::{validate_amount, validate_from_to_and_status, EthPaymentType, PaymentMethod, PrepareTxDataError,
             ZERO_VALUE};
 use crate::coin_errors::{ValidatePaymentError, ValidatePaymentResult};
 use crate::eth::{decode_contract_call, get_function_input_data, wei_from_big_decimal, EthCoin, EthCoinType,
@@ -132,9 +132,9 @@ impl EthCoin {
                 ValidatePaymentError::InternalError("Expected swap_v2_contracts to be Some, but found None".to_string())
             })?
             .maker_swap_v2_contract;
-        validate_payment_args(args.taker_secret_hash, args.maker_secret_hash, &args.amount)
-            .map_to_mm(ValidatePaymentError::InternalError)?;
-        let maker_address = public_to_address(args.maker_pub);
+        let taker_secret_hash = args.taker_secret_hash.try_into()?;
+        let maker_secret_hash = args.maker_secret_hash.try_into()?;
+        validate_amount(&args.amount).map_to_mm(ValidatePaymentError::InternalError)?;
         let swap_id = self.etomic_swap_id_v2(args.time_lock, args.maker_secret_hash);
         let maker_status = self
             .payment_status_v2(
@@ -155,6 +155,7 @@ impl EthCoin {
                 args.maker_payment_tx.tx_hash()
             ))
         })?;
+        let maker_address = public_to_address(args.maker_pub);
         validate_from_to_and_status(
             tx_from_rpc,
             maker_address,
@@ -169,8 +170,8 @@ impl EthCoin {
                 swap_id,
                 amount,
                 taker: self.my_addr().await,
-                taker_secret_hash: args.taker_secret_hash.try_into()?,
-                maker_secret_hash: args.maker_secret_hash.try_into()?,
+                taker_secret_hash,
+                maker_secret_hash,
                 payment_time_lock: args.time_lock,
             }
         };
diff --git a/mm2src/coins/eth/eth_swap_v2/eth_taker_swap_v2.rs b/mm2src/coins/eth/eth_swap_v2/eth_taker_swap_v2.rs
index 8dd686e064..fea91b0408 100644
--- a/mm2src/coins/eth/eth_swap_v2/eth_taker_swap_v2.rs
+++ b/mm2src/coins/eth/eth_swap_v2/eth_taker_swap_v2.rs
@@ -1,4 +1,4 @@
-use super::{check_decoded_length, validate_from_to_and_status, validate_payment_args, validate_payment_state,
+use super::{check_decoded_length, validate_amount, validate_from_to_and_status, validate_payment_state,
             EthPaymentType, PaymentMethod, PrepareTxDataError, ZERO_VALUE};
 use crate::eth::{decode_contract_call, get_function_input_data, wei_from_big_decimal, EthCoin, EthCoinType,
                  ParseCoinAssocTypes, RefundFundingSecretArgs, RefundTakerPaymentArgs, SendTakerFundingArgs,
@@ -154,9 +154,9 @@ impl EthCoin {
                 ValidateSwapV2TxError::Internal("Expected swap_v2_contracts to be Some, but found None".to_string())
             })?
             .taker_swap_v2_contract;
-        validate_payment_args(args.taker_secret_hash, args.maker_secret_hash, &args.trading_amount)
-            .map_err(ValidateSwapV2TxError::Internal)?;
-        let taker_address = public_to_address(args.taker_pub);
+        let taker_secret_hash = args.taker_secret_hash.try_into()?;
+        let maker_secret_hash = args.maker_secret_hash.try_into()?;
+        validate_amount(&args.trading_amount).map_err(ValidateSwapV2TxError::Internal)?;
         let swap_id = self.etomic_swap_id_v2(args.payment_time_lock, args.maker_secret_hash);
         let taker_status = self
             .payment_status_v2(
@@ -175,6 +175,7 @@ impl EthCoin {
                 args.funding_tx.tx_hash()
             ))
         })?;
+        let taker_address = public_to_address(args.taker_pub);
         validate_from_to_and_status(
             tx_from_rpc,
             taker_address,
@@ -191,8 +192,8 @@ impl EthCoin {
                 amount: payment_amount,
                 dex_fee,
                 receiver: self.my_addr().await,
-                taker_secret_hash: args.taker_secret_hash.try_into()?,
-                maker_secret_hash: args.maker_secret_hash.try_into()?,
+                taker_secret_hash,
+                maker_secret_hash,
                 funding_time_lock: args.funding_time_lock,
                 payment_time_lock: args.payment_time_lock,
             }
diff --git a/mm2src/coins/eth/eth_swap_v2/mod.rs b/mm2src/coins/eth/eth_swap_v2/mod.rs
index ff31330ce3..798a232d56 100644
--- a/mm2src/coins/eth/eth_swap_v2/mod.rs
+++ b/mm2src/coins/eth/eth_swap_v2/mod.rs
@@ -154,20 +154,10 @@ pub(crate) fn validate_from_to_and_status(
 }
 
 // TODO validate premium when add its support in swap_v2
-fn validate_payment_args<'a>(
-    taker_secret_hash: &'a [u8],
-    maker_secret_hash: &'a [u8],
-    trading_amount: &BigDecimal,
-) -> Result<(), String> {
+fn validate_amount(trading_amount: &BigDecimal) -> Result<(), String> {
     if !trading_amount.is_positive() {
         return Err("trading_amount must be a positive value".to_string());
     }
-    if taker_secret_hash.len() != 32 {
-        return Err("taker_secret_hash must be 32 bytes".to_string());
-    }
-    if maker_secret_hash.len() != 32 {
-        return Err("maker_secret_hash must be 32 bytes".to_string());
-    }
     Ok(())
 }