add fp1 sample

2026-04-22 13:38:09 +01:00
parent 980cc626a9
commit 1b5239566a
8 changed files with 211 additions and 0 deletions
@@ -0,0 +1,37 @@
+using CsharpFp1.Domain;
+using CsharpFp1.Infrastructure;
+
+namespace CsharpFp1.Application;
+
+// delegate type is optional, but nice to illustrate
+public delegate void WithdrawMoney(Guid accountId, decimal amount);
+
+public static class AccountApplication
+{
+    public static WithdrawMoney CreateWithdrawMoney(
+        LoadAccount loadAccount,
+        SaveAccount saveAccount
+    )
+    {
+        return (accountId, amount) =>
+        {
+            var account =
+                loadAccount(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:0.00}...");
+
+            var modifiedAccount = AccountDomain.Withdraw(account, new Money(amount));
+
+            Console.WriteLine(
+                $"[App] Withdrawal applied. New balance: {modifiedAccount.Balance.Amount:0.00}"
+            );
+
+            saveAccount(modifiedAccount);
+
+            Console.WriteLine("[App] Account persisted.");
+        };
+    }
+}