Add validation for Kudai strategy staking requirements in StartCopyTradingCommandHandler. Implemented methods in IEvmManager to retrieve staked KUDAI balance and GBC NFT count. Enhanced error handling for staking checks.

src/Managing.Infrastructure.Web3/Contracts/KudaiStakingContracts.cs

@@ -0,0 +1,29 @@
+using System.Numerics;
+using Nethereum.ABI.FunctionEncoding.Attributes;
+using Nethereum.Contracts;
+
+namespace Managing.Infrastructure.Evm.Contracts;
+
+public class TokenStakesFunction : FunctionMessage
+{
+    [Parameter("address", "_user", 1)]
+    public string User { get; set; }
+}
+
+public class TokenStakesOutputDTO : FunctionOutputDTO
+{
+    [Parameter("uint256", "", 1)]
+    public BigInteger ReturnValue1 { get; set; }
+}
+
+public class GetUserStakedNftsFunction : FunctionMessage
+{
+    [Parameter("address", "_user", 1)]
+    public string User { get; set; }
+}
+
+public class GetUserStakedNftsOutputDTO : FunctionOutputDTO
+{
+    [Parameter("uint256[]", "", 1)]
+    public List<BigInteger> ReturnValue1 { get; set; }
+}

src/Managing.Infrastructure.Web3/EvmManager.cs

@@ -11,6 +11,7 @@ using Managing.Domain.Evm;
 using Managing.Domain.Statistics;
 using Managing.Domain.Trades;
 using Managing.Infrastructure.Evm.Abstractions;
+using Managing.Infrastructure.Evm.Contracts;
 using Managing.Infrastructure.Evm.Models;
 using Managing.Infrastructure.Evm.Models.Gmx.v2;
 using Managing.Infrastructure.Evm.Models.Privy;
@@ -43,6 +44,10 @@ public class EvmManager : IEvmManager
     private readonly IWeb3ProxyService _web3ProxyService;
     private readonly ICacheService _cacheService;
 
+    // Kudai staking contract constants
+    private const string KudaiTokenAddress = "0xc9bD1C1e65eBFb36cF4b3d9FC8E2b844248deEE8";
+    private const string StackingContractAddress = "0x5b02047D471cFf479EBD37575e41Eaa37a4d9321";
+
     public EvmManager(IEnumerable<ISubgraphPrices> subgraphs,
         IWeb3ProxyService web3ProxyService, ICacheService cacheService)
     {
@@ -996,4 +1001,47 @@ public class EvmManager : IEvmManager
         // Map the result to the Position domain object
         return result;
     }
+
+    public async Task<decimal> GetKudaiStakedBalance(string address)
+    {
+        try
+        {
+            var tokenStakesMessage = new TokenStakesFunction() { User = address };
+            var queryHandler = _web3.Eth.GetContractQueryHandler<TokenStakesFunction>();
+
+            var stakedAmount = await queryHandler
+                .QueryAsync<TokenStakesOutputDTO>(StackingContractAddress, tokenStakesMessage)
+                .ConfigureAwait(false);
+
+            // KUDAI has 18 decimals like most ERC20 tokens
+            return Web3.Convert.FromWei(stakedAmount.ReturnValue1, 18);
+        }
+        catch (Exception ex)
+        {
+            SentrySdk.CaptureException(ex);
+            Console.Error.WriteLine($"Error getting KUDAI staked balance for address {address}: {ex.Message}");
+            return 0;
+        }
+    }
+
+    public async Task<int> GetGbcStakedCount(string address)
+    {
+        try
+        {
+            var getUserStakedNftsMessage = new GetUserStakedNftsFunction() { User = address };
+            var queryHandler = _web3.Eth.GetContractQueryHandler<GetUserStakedNftsFunction>();
+
+            var stakedNfts = await queryHandler
+                .QueryAsync<GetUserStakedNftsOutputDTO>(StackingContractAddress, getUserStakedNftsMessage)
+                .ConfigureAwait(false);
+
+            return stakedNfts.ReturnValue1?.Count ?? 0;
+        }
+        catch (Exception ex)
+        {
+            SentrySdk.CaptureException(ex);
+            Console.Error.WriteLine($"Error getting GBC staked count for address {address}: {ex.Message}");
+            return 0;
+        }
+    }
 }