Add an Application layer (#2)

Reviewed-on: #2

Application/Application.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup>
+		<TargetFramework>net8.0</TargetFramework>
+		<ImplicitUsings>disable</ImplicitUsings>
+		<Nullable>enable</Nullable>
+		<Company>Winsomnia</Company>
+		<Version>1.0.0-a0</Version>
+		<AssemblyVersion>1.0.0.0</AssemblyVersion>
+		<FileVersion>1.0.0.0</FileVersion>
+		<AssemblyName>Mirea.Api.DataAccess.Application</AssemblyName>
+		<RootNamespace>$(AssemblyName)</RootNamespace>
+	</PropertyGroup>
+
+	<ItemGroup>
+	  <PackageReference Include="AutoMapper" Version="12.0.1" />
+	  <PackageReference Include="FluentValidation" Version="11.9.0" />
+	  <PackageReference Include="FluentValidation.DependencyInjectionExtensions" Version="11.9.0" />
+	  <PackageReference Include="MediatR" Version="12.2.0" />
+	  <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.0" />
+	</ItemGroup>
+
+	<ItemGroup>
+	  <ProjectReference Include="..\Domain\Domain.csproj" />
+	</ItemGroup>
+
+</Project>

Application/Common/Behaviors/ValidationBehavior.cs

@@ -0,0 +1,30 @@
+using FluentValidation;
+using MediatR;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Mirea.Api.DataAccess.Application.Common.Behaviors;
+
+public class ValidationBehavior<TRequest, TResponse>(IEnumerable<IValidator<TRequest>> validators)
+    : IPipelineBehavior<TRequest, TResponse> where TRequest : IRequest<TResponse>
+{
+    public Task<TResponse> Handle(TRequest request,
+        RequestHandlerDelegate<TResponse> next, CancellationToken cancellationToken)
+    {
+        var context = new ValidationContext<TRequest>(request);
+        var failures = validators
+            .Select(v => v.Validate(context))
+            .SelectMany(result => result.Errors)
+            .Where(failure => failure != null)
+            .ToList();
+
+        if (failures.Count != 0)
+        {
+            throw new ValidationException(failures);
+        }
+
+        return next();
+    }
+}

Application/Common/Mappings/AssemblyMappingProfile.cs

@@ -0,0 +1,28 @@
+using AutoMapper;
+using System;
+using System.Linq;
+using System.Reflection;
+
+namespace Mirea.Api.DataAccess.Application.Common.Mappings;
+
+public class AssemblyMappingProfile : Profile
+{
+    public AssemblyMappingProfile(Assembly assembly) =>
+        ApplyMappingsFromAssembly(assembly);
+
+    private void ApplyMappingsFromAssembly(Assembly assembly)
+    {
+        var types = assembly.GetExportedTypes()
+            .Where(type => type.GetInterfaces()
+                .Any(i => i.IsGenericType &&
+                          i.GetGenericTypeDefinition() == typeof(IMapWith<>)))
+            .ToList();
+
+        foreach (var type in types)
+        {
+            var instance = Activator.CreateInstance(type);
+            var methodInfo = type.GetMethod("Mapping");
+            methodInfo?.Invoke(instance, new[] { this });
+        }
+    }
+}

Application/Common/Mappings/IMapWith.cs

@@ -0,0 +1,9 @@
+using AutoMapper;
+
+namespace Mirea.Api.DataAccess.Application.Common.Mappings;
+
+public interface IMapWith<T>
+{
+    void Mapping(Profile profile) =>
+        profile.CreateMap(typeof(T), GetType());
+}

Application/DependencyInjection.cs

@@ -0,0 +1,19 @@
+using FluentValidation;
+using MediatR;
+using Microsoft.Extensions.DependencyInjection;
+using Mirea.Api.DataAccess.Application.Common.Behaviors;
+using System.Reflection;
+
+namespace Mirea.Api.DataAccess.Application;
+
+public static class DependencyInjection
+{
+    public static IServiceCollection AddApplication(this IServiceCollection services)
+    {
+        services.AddMediatR(cfg => cfg.RegisterServicesFromAssembly(Assembly.GetExecutingAssembly()));
+        services.AddValidatorsFromAssemblies(new[] { Assembly.GetExecutingAssembly() });
+        services.AddTransient(typeof(IPipelineBehavior<,>),
+            typeof(ValidationBehavior<,>));
+        return services;
+    }
+}

Application/Interfaces/DbContexts/IDbContextBase.cs

@@ -0,0 +1,9 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Mirea.Api.DataAccess.Application.Interfaces.DbContexts;
+
+public interface IDbContextBase
+{
+    Task<int> SaveChangesAsync(CancellationToken cancellationToken);
+}

Application/Interfaces/DbContexts/Schedule/ICampusDbContext.cs

@@ -0,0 +1,9 @@
+using Microsoft.EntityFrameworkCore;
+using Mirea.Api.DataAccess.Domain.Schedule;
+
+namespace Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
+
+public interface ICampusDbContext : IDbContextBase
+{
+    DbSet<Campus> Campuses { get; set; }
+}

Application/Interfaces/DbContexts/Schedule/IDayDbContext.cs

@@ -0,0 +1,9 @@
+using Microsoft.EntityFrameworkCore;
+using Mirea.Api.DataAccess.Domain.Schedule;
+
+namespace Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
+
+public interface IDayDbContext : IDbContextBase
+{
+    DbSet<Day> Days { get; set; }
+}

Application/Interfaces/DbContexts/Schedule/IFacultyDbContext.cs

@@ -0,0 +1,9 @@
+using Microsoft.EntityFrameworkCore;
+using Mirea.Api.DataAccess.Domain.Schedule;
+
+namespace Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
+
+public interface IFacultyDbContext : IDbContextBase
+{
+    DbSet<Faculty> Faculties { get; set; }
+}

Application/Interfaces/DbContexts/Schedule/IGroupDbContext.cs

@@ -0,0 +1,9 @@
+using Microsoft.EntityFrameworkCore;
+using Mirea.Api.DataAccess.Domain.Schedule;
+
+namespace Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
+
+public interface IGroupDbContext : IDbContextBase
+{
+    DbSet<Group> Groups { get; set; }
+}

Application/Interfaces/DbContexts/Schedule/ILectureHallDbContext.cs

@@ -0,0 +1,9 @@
+using Microsoft.EntityFrameworkCore;
+using Mirea.Api.DataAccess.Domain.Schedule;
+
+namespace Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
+
+public interface ILectureHallDbContext : IDbContextBase
+{
+    DbSet<LectureHall> LectureHalls { get; set; }
+}

Application/Interfaces/DbContexts/Schedule/ILessonDbContext.cs

@@ -0,0 +1,9 @@
+using Microsoft.EntityFrameworkCore;
+using Mirea.Api.DataAccess.Domain.Schedule;
+
+namespace Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
+
+public interface ILessonDbContext : IDbContextBase
+{
+    DbSet<Lesson> Lessons { get; set; }
+}

Application/Interfaces/DbContexts/Schedule/ILessonToTypeOfOccupationDbContext.cs

@@ -0,0 +1,9 @@
+using Microsoft.EntityFrameworkCore;
+using Mirea.Api.DataAccess.Domain.Schedule;
+
+namespace Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
+
+public interface ILessonToTypeOfOccupationDbContext : IDbContextBase
+{
+    DbSet<LessonToTypeOfOccupation> LessonToTypeOfOccupations { get; set; }
+}

Application/Interfaces/DbContexts/Schedule/IProfessorDbContext.cs

@@ -0,0 +1,9 @@
+using Microsoft.EntityFrameworkCore;
+using Mirea.Api.DataAccess.Domain.Schedule;
+
+namespace Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
+
+public interface IProfessorDbContext : IDbContextBase
+{
+    DbSet<Professor> Professors { get; set; }
+}

Application/Interfaces/DbContexts/Schedule/IProfessorToLessonDbContext.cs

@@ -0,0 +1,9 @@
+using Microsoft.EntityFrameworkCore;
+using Mirea.Api.DataAccess.Domain.Schedule;
+
+namespace Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
+
+public interface IProfessorToLessonDbContext : IDbContextBase
+{
+    DbSet<ProfessorToLesson> ProfessorToLessons { get; set; }
+}

Application/Interfaces/DbContexts/Schedule/ITypeOfOccupationDbContext.cs

@@ -0,0 +1,9 @@
+using Microsoft.EntityFrameworkCore;
+using Mirea.Api.DataAccess.Domain.Schedule;
+
+namespace Mirea.Api.DataAccess.Application.Interfaces.DbContexts.Schedule;
+
+public interface ITypeOfOccupationDbContext : IDbContextBase
+{
+    DbSet<TypeOfOccupation> TypeOfOccupations { get; set; }
+}

Backend.sln

@@ -3,7 +3,7 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.8.34330.188
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Domain", "Domain\Domain.csproj", "{C27FB5CD-6A70-4FB2-847A-847B34806902}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Domain", "Domain\Domain.csproj", "{C27FB5CD-6A70-4FB2-847A-847B34806902}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Endpoint", "Endpoint\Endpoint.csproj", "{F3A1D12E-F5B2-4339-9966-DBF869E78357}"
 EndProject
@@ -17,6 +17,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Elements of the solution",
 		README.md = README.md
 	EndProjectSection
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Application", "Application\Application.csproj", "{E7F0A4D4-B032-4BB9-9526-1AF688F341A4}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU