From eefec3a0de9458aaa89a6fcb30e827e7c3f57180 Mon Sep 17 00:00:00 2001
From: Denis Fadeev <denis@fadeev.org>
Date: Fri, 31 May 2024 19:41:38 +0300
Subject: [PATCH] feat: compare amount and refund fee before depositing

---
 packages/tasks/src/deposit.ts | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/packages/tasks/src/deposit.ts b/packages/tasks/src/deposit.ts
index 5e7cc4d..b6c9fa1 100644
--- a/packages/tasks/src/deposit.ts
+++ b/packages/tasks/src/deposit.ts
@@ -18,6 +18,25 @@ const main = async (args: any, hre: HardhatRuntimeEnvironment) => {
 
   const { amount, erc20 } = args;
 
+  let inputToken = args.erc20
+    ? await client.getZRC20FromERC20(erc20)
+    : await client.getZRC20GasToken(hre.network.name);
+
+  const refundFee = await client.getRefundFee(inputToken);
+  const refundFeeAmount = ethers.utils.formatUnits(
+    refundFee.amount,
+    refundFee.decimals
+  );
+
+  let decimals = 18;
+
+  if (erc20) {
+    const contract = new ethers.Contract(erc20, ERC20_ABI.abi, signer);
+    decimals = await contract.decimals();
+  }
+
+  const value = ethers.utils.parseUnits(amount, decimals);
+
   let message;
   if (args.message) {
     try {
@@ -100,6 +119,13 @@ Recipient:   ${args.recipient || signer.address}`);
     if (message) {
       console.log(`Message:     ${args.message}`);
     }
+    if (value.lt(refundFee.amount)) {
+      console.log(`
+WARNING! Amount ${amount} is less than refund fee ${refundFeeAmount}.
+This means if this transaction fails, you will not be able to get
+the refund of deposited tokens. Consider increasing the amount.
+`);
+    }
     try {
       await confirm(
         {