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csharp-oop/Application/WithdrawMoneyHandler.cs

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+using CsharpOop.Contracts;
+using CsharpOop.Domain;
+
+namespace CsharpOop.Applications;
+
+/// Application-layer handler orchestrating the use case
+public sealed class WithdrawMoneyHandler
+{
+    private readonly IAccountRepository _repository;
+
+    public WithdrawMoneyHandler(IAccountRepository repository)
+    {
+        _repository = repository;
+    }
+
+    public void Handle(WithdrawMoneyCommand command)
+    {
+        Console.WriteLine(
+            $"[App] Handling WithdrawMoneyCommand for account {command.AccountId}, amount {command.Amount:0.00}"
+        );
+
+        var accountId = new AccountId(command.AccountId);
+        var amount = new Money(command.Amount);
+
+        var account =
+            _repository.GetById(accountId)
+            ?? throw new InvalidOperationException("Account not found.");
+
+        Console.WriteLine($"[App] Account loaded. Current balance: {account.Balance.Amount:0.00}");
+        Console.WriteLine($"[App] Executing withdrawal of {amount.Amount:0.00}...");
+
+        account.Withdraw(amount);
+
+        Console.WriteLine($"[App] Withdrawal applied. New balance: {account.Balance.Amount:0.00}");
+
+        _repository.Save(account);
+        Console.WriteLine("[App] Account persisted.");
+    }
+}