Feature/financial years

Commands.Test/Commands.Test.csproj

@@ -6,7 +6,10 @@
 
   <ItemGroup>
     <PackageReference Include="AutoMapper" Version="12.0.1" />
+    <PackageReference Include="FluentAssertions" Version="6.11.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="7.0.8" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.1" />
+    <PackageReference Include="Moq" Version="4.18.4" />
     <PackageReference Include="xunit" Version="2.4.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

Commands.Test/FinancialYear/When_adding_a_financial_year.cs

@@ -0,0 +1,109 @@
+using Commands.Handlers.FinancialYear.AddFinancialYear;
+
+using Domain;
+using Domain.Interfaces;
+
+using Microsoft.EntityFrameworkCore;
+
+using Moq;
+
+using Persistence;
+using Persistence.Repositories;
+
+using Xunit;
+
+namespace Commands.Test.FinancialYear;
+
+public class When_adding_a_financial_year
+{
+    private readonly Mock<IFinancialYearRepository> _financialYearRepositoryMock;
+    private readonly HaSpManContext _haspmanDbContext;
+    private readonly Mock<IFinancialYearConfigurationRepository> _financialYearConfigurationMock;
+
+    public When_adding_a_financial_year()
+    {
+        _financialYearRepositoryMock = new Mock<IFinancialYearRepository>();
+        _financialYearConfigurationMock = new Mock<IFinancialYearConfigurationRepository>();
+        _haspmanDbContext = new HaSpManContext(new DbContextOptionsBuilder<HaSpManContext>()
+
+            .UseInMemoryDatabase(Guid.NewGuid().ToString()).Options);
+        SUT = new AddFinancialYearHandler(_financialYearRepositoryMock.Object, _financialYearConfigurationMock.Object,
+            _haspmanDbContext);
+    }
+
+    public AddFinancialYearHandler SUT { get; set; }
+
+
+
+
+    public class And_no_financial_year_already_exists : When_adding_a_financial_year
+    {
+        [Fact]
+        public async Task It_should_add_a_new_financial_year()
+        {
+            var startDate = new DateTimeOffset(new DateTime(DateTime.Now.Year, 9, 1));
+            var endDate = new DateTimeOffset(new DateTime(DateTime.Now.AddYears(1).Year, 8, 31));
+            _financialYearRepositoryMock
+                .Setup(x =>
+                    x.Add(It.Is<Domain.FinancialYear>(financialYear => financialYear.StartDate == startDate)))
+                .Verifiable();
+            _financialYearRepositoryMock
+                .Setup(x =>
+                    x.Add(It.Is<Domain.FinancialYear>(financialYear => financialYear.EndDate == endDate)))
+                .Verifiable();
+
+            _financialYearConfigurationMock.Setup(x => x.Get(It.IsAny<CancellationToken>()))
+                .ReturnsAsync(new FinancialYearConfiguration(new DateTimeOffset(new DateTime(2021, 9, 1))));
+
+            await SUT.Handle(new AddFinancialYearCommand(), CancellationToken.None);
+
+            _financialYearRepositoryMock
+                .Verify(x =>
+                    x.Add(It.Is<Domain.FinancialYear>(financialYear => financialYear.StartDate == startDate)));
+            _financialYearRepositoryMock
+                .Verify(x =>
+                    x.Add(It.Is<Domain.FinancialYear>(financialYear => financialYear.EndDate == endDate)));
+
+        }
+
+
+        public class And_a_financial_year_already_exists : When_adding_a_financial_year
+        {
+            [Fact]
+            public async Task It_should_add_a_new_financial_year_following_the_last_year()
+            {
+
+                var startDate = new DateTimeOffset(new DateTime(2023, 9, 1));
+
+                var endDate = new DateTimeOffset(new DateTime(2024, 8, 31));
+                _financialYearRepositoryMock
+                    .Setup(x =>
+                        x.GetMostRecentAsync(It.IsAny<CancellationToken>()))
+                    .ReturnsAsync(new Domain.FinancialYear(new DateTimeOffset(new DateTime(2022, 9, 1)),
+                        new DateTimeOffset(new DateTime(2023,8,31)), new List<Domain.Transaction>()));
+
+                _financialYearRepositoryMock
+                    .Setup(x =>
+                        x.Add(It.Is<Domain.FinancialYear>(financialYear => financialYear.StartDate == startDate)))
+                    .Verifiable();
+                _financialYearRepositoryMock
+                    .Setup(x =>
+                        x.Add(It.Is<Domain.FinancialYear>(financialYear => financialYear.EndDate == endDate)))
+                    .Verifiable();
+
+                _financialYearConfigurationMock.Setup(x => x.Get(It.IsAny<CancellationToken>()))
+                    .ReturnsAsync(new FinancialYearConfiguration(new DateTimeOffset(new DateTime(2021, 9, 1))));
+
+                await SUT.Handle(new AddFinancialYearCommand(), CancellationToken.None);
+
+                _financialYearRepositoryMock
+                    .Verify(x =>
+                        x.Add(It.Is<Domain.FinancialYear>(financialYear => financialYear.StartDate == startDate)));
+                _financialYearRepositoryMock
+                    .Verify(x =>
+                        x.Add(It.Is<Domain.FinancialYear>(financialYear => financialYear.EndDate == endDate)));
+
+            }
+        }
+    }
+}

Commands.Test/FinancialYear/When_closing_a_financial_year.cs

@@ -0,0 +1,74 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Commands.Handlers.FinancialYear.CloseFinancialYear;
+
+using Domain;
+using Domain.Interfaces;
+
+using FluentAssertions;
+
+using Moq;
+
+using Persistence.Repositories;
+
+using Xunit;
+
+namespace Commands.Test.FinancialYear;
+
+public class When_closing_a_financial_year
+{
+    private readonly Mock<IFinancialYearRepository> _financialYearRepositoryMock;
+
+    public When_closing_a_financial_year()
+    {
+        _financialYearRepositoryMock = new Mock<IFinancialYearRepository>();
+        SUT = new CloseFinancialYearHandler(_financialYearRepositoryMock.Object);
+    }
+
+    public CloseFinancialYearHandler SUT { get; set; }
+
+    [Fact]
+    public async Task It_should_mark_the_year_as_closed()
+    {
+        var startDate = DateTimeOffset.Now;
+        var financialYear = new Domain.FinancialYear(startDate, startDate.AddYears(1).AddDays(-1), new List<Domain.Transaction>());
+        _financialYearRepositoryMock
+            .Setup(x => x.GetByIdAsync(financialYear.Id, CancellationToken.None))
+            .ReturnsAsync(financialYear);
+;       await SUT.Handle(new CloseFinancialYearCommand(financialYear.Id), CancellationToken.None);
+
+        financialYear.IsClosed.Should().BeTrue();
+    }
+
+    [Fact]
+    public async Task It_should_mark_all_related_transactions_as_as_locked()
+    {
+        var startDate = DateTimeOffset.Now;
+        var financialYear = new Domain.FinancialYear(startDate, startDate.AddYears(1).AddDays(-1), new List<Domain.Transaction>()
+            {
+                new CreditTransaction("Random counter party", Guid.NewGuid(), 20,DateTimeOffset.Now, "A description", new List<TransactionAttachment>(), null, new List<TransactionTypeAmount>())
+            });
+        _financialYearRepositoryMock
+            .Setup(x => x.GetByIdAsync(financialYear.Id, CancellationToken.None))
+            .ReturnsAsync(financialYear);
+        ;
+        await SUT.Handle(new CloseFinancialYearCommand(financialYear.Id), CancellationToken.None);
+
+        financialYear.IsClosed.Should().BeTrue();
+    }
+
+    [Fact]
+    public async Task It_should_throw_an_exception_when_no_year_is_found()
+    {
+        var newGuid = Guid.NewGuid();
+        var exception = await Assert.ThrowsAsync<ArgumentException>(async () =>
+       {
+           await SUT.Handle(new CloseFinancialYearCommand(newGuid), CancellationToken.None);
+       });
+        Assert.Equal($"No financial year found by Id {newGuid} (Parameter 'Id')", exception.Message);
+    }
+}

Commands.Test/Transaction/When_editing_a_transaction.cs

@@ -0,0 +1,62 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Commands.Handlers.Transaction.EditTransaction;
+
+using Domain;
+using Domain.Interfaces;
+
+using FluentAssertions;
+
+using MediatR;
+
+using Moq;
+
+using Persistence.Repositories;
+
+using Xunit;
+
+using AttachmentFile = Commands.Handlers.AttachmentFile;
+
+namespace Commands.Test.Transaction;
+public class When_editing_a_transaction
+{
+    private readonly Mock<IFinancialYearRepository> _financialYearRepositoryMock;
+
+    public When_editing_a_transaction()
+    {
+        _financialYearRepositoryMock = new Mock<IFinancialYearRepository>();
+        var mediatorMock = new Mock<IMediator>();
+        SUT = new EditTransactionHandler(_financialYearRepositoryMock.Object, mediatorMock.Object);
+    }
+
+    public EditTransactionHandler SUT { get; set; }
+
+    [Fact]
+    public async Task It_should_throw_an_exception_when_locked()
+    {
+        var bankAccountId = Guid.NewGuid();
+
+        var transaction = new CreditTransaction("Random counter party", bankAccountId, 20m, DateTimeOffset.Now,
+            "A description", new List<TransactionAttachment>(), null, new List<TransactionTypeAmount>());
+        var financialYear = new Domain.FinancialYear(new DateTimeOffset(new DateTime(2022,9,1)), new DateTimeOffset(new DateTime(2023,8,31)), new List<Domain.Transaction>()
+        {
+            transaction
+        });
+        financialYear.Close();
+
+        _financialYearRepositoryMock
+            .Setup(x => x.GetFinancialYearByTransactionId(transaction.Id, CancellationToken.None))
+            .ReturnsAsync(financialYear);
+
+        var exception = await Assert.ThrowsAsync<InvalidOperationException>(async () => await SUT.Handle(
+            new EditTransactionCommand(transaction.Id, "Random counter party name", null, bankAccountId,
+                DateTimeOffset.Now, "Another description", new List<TransactionTypeAmount>(),
+                new List<AttachmentFile>()), CancellationToken.None));
+
+        exception.Message.Should().Be("Financial year is closed");
+    }
+}

Commands/Handlers/FinancialYear/AddFinancialYear/AddFinancialYearCommand.cs

@@ -0,0 +1,13 @@
+using FluentValidation;
+
+namespace Commands.Handlers.FinancialYear.AddFinancialYear;
+
+public record AddFinancialYearCommand() : IRequest<Guid>;
+
+
+public class AddFinancialYearCommandValidator : AbstractValidator<AddFinancialYearCommand>
+{
+    public AddFinancialYearCommandValidator()
+    {
+    }
+}

Commands/Handlers/FinancialYear/AddFinancialYear/AddFinancialYearHandler.cs

@@ -0,0 +1,46 @@
+using Domain.Interfaces;
+
+using Persistence;
+using Persistence.Repositories;
+
+namespace Commands.Handlers.FinancialYear.AddFinancialYear;
+
+public class AddFinancialYearHandler : IRequestHandler<AddFinancialYearCommand, Guid>
+{
+    private readonly IFinancialYearRepository _financialYearRepository;
+    private readonly IFinancialYearConfigurationRepository _financialYearConfigurationRepository;
+
+    private readonly HaSpManContext _haSpManContext;
+
+    public AddFinancialYearHandler(IFinancialYearRepository financialYearRepository, 
+        IFinancialYearConfigurationRepository financialYearConfigurationRepository,
+        HaSpManContext haSpManContext)
+    {
+        _financialYearRepository = financialYearRepository;
+        _financialYearConfigurationRepository = financialYearConfigurationRepository;
+        _haSpManContext = haSpManContext;
+    }
+    public async Task<Guid> Handle(AddFinancialYearCommand request, CancellationToken cancellationToken)
+    {
+        var configuration = await _financialYearConfigurationRepository.Get(cancellationToken) 
+            ?? throw new InvalidOperationException("Financial year configuration is missing");
+
+
+        var lastFinancialYear = await _financialYearRepository.GetMostRecentAsync(cancellationToken);
+
+        // In case this is the first year we create, assume we want it to be this year.
+        // Otherwise, just add a new year
+        var year = lastFinancialYear == null ? DateTime.Now.Year : lastFinancialYear.EndDate.Year;
+
+        var startDate = new DateTimeOffset(new DateTime(year, configuration.StartDate.Month, configuration.StartDate.Day));
+
+        var financialYear = new Domain.FinancialYear(
+            startDate, 
+            startDate.AddYears(1).AddDays(-1),
+            new List<Domain.Transaction>());
+
+        _financialYearRepository.Add(financialYear);
+        await _financialYearRepository.SaveChangesAsync(cancellationToken);
+        return financialYear.Id;
+    }
+}

Commands/Handlers/FinancialYear/CloseFinancialYear/CloseFinancialYearCommand.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using FluentValidation;
+
+namespace Commands.Handlers.FinancialYear.CloseFinancialYear;
+
+public record CloseFinancialYearCommand(Guid Id) : IRequest;
+
+public class CloseFinancialYearCommandValidator : AbstractValidator<CloseFinancialYearCommand>
+{
+    public CloseFinancialYearCommandValidator()
+    {
+        RuleFor(x => x.Id).NotEmpty();
+    }
+}

Commands/Handlers/FinancialYear/CloseFinancialYear/CloseFinancialYearHandler.cs

@@ -0,0 +1,24 @@
+using Domain.Interfaces;
+
+using Persistence.Repositories;
+
+namespace Commands.Handlers.FinancialYear.CloseFinancialYear;
+
+public class CloseFinancialYearHandler : IRequestHandler<CloseFinancialYearCommand>
+{
+    private readonly IFinancialYearRepository _financialYearRepository;
+
+    public CloseFinancialYearHandler(IFinancialYearRepository financialYearRepository)
+    {
+        _financialYearRepository = financialYearRepository;
+    }
+    public async Task Handle(CloseFinancialYearCommand request, CancellationToken cancellationToken)
+    {
+        var financialYear = await _financialYearRepository.GetByIdAsync(request.Id, cancellationToken)
+                            ?? throw new ArgumentException($"No financial year found by Id {request.Id}", nameof(request.Id));
+        financialYear.Close();
+
+        await _financialYearRepository.SaveChangesAsync(cancellationToken);
+
+    }
+}

Commands/Handlers/FinancialYearConfiguration/SetFinancialYearConfigurationCommand.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using FluentValidation;
+
+namespace Commands.Handlers.FinancialYearConfiguration;
+
+public record SetFinancialYearConfigurationCommand(DateTimeOffset StartDate) : IRequest;
+
+
+public class SetFinancialYearConfigurationCommandValidator : AbstractValidator<SetFinancialYearConfigurationCommand>
+{
+    public SetFinancialYearConfigurationCommandValidator()
+    {
+        RuleFor(x => x.StartDate).NotEmpty();
+    }
+}