fix project names

csharp-fp2/Application/AccountApplicationService.cs

@@ -1,17 +0,0 @@
-using CsharpFp2.Domain;
-
-namespace CsharpFp2.Application;
-
-public static class AccountApplicationService
-{
-    public static void WithdrawMoney(IAccountRepository repository, Guid accountId, decimal amount)
-    {
-        var account =
-            repository.GetById(accountId)
-            ?? throw new InvalidOperationException("Account not found.");
-
-        account.Withdraw(new Money(amount));
-
-        repository.Save(account);
-    }
-}

csharp-fp2/Domain/Account.cs

@@ -1,37 +0,0 @@
-namespace CsharpFp2.Domain;
-
-/// Domain entity / aggregate root representing a bank account
-public sealed class Account
-{
-    public Guid Id { get; private set; }
-    public Money Balance { get; private set; }
-
-    // Often present to satisfy serializers / ORMs.
-    private Account()
-    {
-        Balance = new Money(0);
-    }
-
-    public Account(Guid id, Money openingBalance)
-    {
-        if (openingBalance.Amount < 0)
-            throw new ArgumentOutOfRangeException(nameof(openingBalance));
-
-        Id = id;
-
-        Balance = openingBalance;
-    }
-
-    // Domain behaviour attached to the entity.
-    public void Withdraw(Money amount)
-    {
-        if (amount.Amount <= 0)
-            throw new InvalidOperationException("Withdrawal amount must be positive.");
-
-        // Sometimes, validation is modelled with custom exceptions instead
-        if (Balance.Amount - amount.Amount < 0)
-            throw new InsufficientBalanceException(Balance, amount);
-
-        Balance = Balance.Subtract(amount);
-    }
-}

csharp-fp2/Domain/IAccountRepository.cs

@@ -1,8 +0,0 @@
-namespace CsharpFp2.Domain;
-
-/// Repository abstraction used to load and save accounts
-public interface IAccountRepository
-{
-    Account? GetById(Guid id);
-    void Save(Account account);
-}

csharp-fp2/Domain/InsufficientBalanceException.cs

@@ -1,17 +0,0 @@
-namespace CsharpFp2.Domain;
-
-/// Custom domain exception thrown when a withdrawal would cause the balance to go below zero
-public sealed class InsufficientBalanceException : InvalidOperationException
-{
-    public Money CurrentBalance { get; }
-    public Money RequestedAmount { get; }
-
-    public InsufficientBalanceException(Money currentBalance, Money requestedAmount)
-        : base(
-            $"Insufficient balance. Current: {currentBalance.Amount:0.00}, Requested: {requestedAmount.Amount:0.00}"
-        )
-    {
-        CurrentBalance = currentBalance;
-        RequestedAmount = requestedAmount;
-    }
-}

csharp-fp2/Domain/Money.cs

@@ -1,33 +0,0 @@
-namespace CsharpFp2.Domain;
-
-/// Value object used to represent money and enforce simple invariants.
-/// Note that this implementation uses immutable patterns for the data
-/// by returning a new instance for each modification. This is an early
-/// recommendation for DDD with OO, but not necessarily the common practice
-/// in many real-world implementations.
-public sealed class Money
-{
-    // Potentially with a setter - see note above
-    public decimal Amount { get; }
-
-    public Money(decimal amount)
-    {
-        Amount = amount;
-    }
-
-    // In many existing DDD/OO codebases you may actually see the use
-    // of mutable value types.
-    //
-    // public void Add(Money other)
-    // {
-    //     this.Amount += other.Amount;
-    // }
-
-    // On the other hand, sometimes these helpers may be left out
-    // and operations encoded directly "from the outside":
-    // newBalance = new Money(oldBalance.Amount - charge.Amount)
-    //
-    public Money Add(Money other) => new(Amount + other.Amount);
-
-    public Money Subtract(Money other) => new(Amount - other.Amount);
-}

csharp-fp2/Infrastructure/InMemoryAccountRepository.cs

@@ -1,25 +0,0 @@
-using CsharpFp2.Domain;
-
-namespace CsharpFp2.Infrastructure;
-
-/// Simple in-memory repository for demonstration
-public class InMemoryAccountRepository : IAccountRepository
-{
-    private readonly Dictionary<Guid, Account> _accounts = new();
-
-    public Account? GetById(Guid id)
-    {
-        var found = _accounts.TryGetValue(id, out var account);
-        Console.WriteLine(found ? $"[Repo] Loaded account {id}" : $"[Repo] Account {id} not found");
-
-        return found ? account : null;
-    }
-
-    public void Save(Account account)
-    {
-        _accounts[account.Id] = account;
-        Console.WriteLine(
-            $"[Repo] Saved account {account.Id} with balance {account.Balance.Amount:0.00}"
-        );
-    }
-}

csharp-fp2/Program.cs

@@ -1,27 +0,0 @@
-using CsharpFp2.Application;
-using CsharpFp2.Domain;
-using CsharpFp2.Infrastructure;
-
-namespace CsharpFp2;
-
-public class Program
-{
-    public static void Main()
-    {
-        Console.WriteLine("[csharp-fp2] Starting withdraw money demo...");
-
-        var repository = new InMemoryAccountRepository();
-
-        var accountId = Guid.NewGuid();
-        Console.WriteLine($"[csharp-fp2] Seeding account {accountId} with opening balance 200.00");
-        repository.Save(new Account(accountId, new Money(200m)));
-
-        decimal amount = 100m;
-        Console.WriteLine(
-            $"[csharp-fp2] Executing withdrawal {amount:0.00} from account {accountId}"
-        );
-        AccountApplicationService.WithdrawMoney(repository, accountId, amount);
-
-        Console.WriteLine("[csharp-fp2] Demo completed.");
-    }
-}

csharp-fp2/csharp-fp2.csproj

@@ -1,9 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net10.0</TargetFramework>
-    <RootNamespace>csharp_fp2</RootNamespace>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-  </PropertyGroup>
-</Project>