backend/Directory.Packages.props

@@ -6,6 +6,8 @@
     <PackageVersion Include="EFCore.NamingConventions" Version="10.0.1" />
     <PackageVersion Include="Extensions.Hosting.AsyncInitialization" Version="3.0.1" />
     <PackageVersion Include="FluentResults" Version="4.0.0" />
+    <PackageVersion Include="FluentValidation" Version="12.1.1" />
+    <PackageVersion Include="FluentValidation.DependencyInjectionExtensions" Version="12.1.1" />
     <PackageVersion Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="10.0.10" />
     <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="10.0.10" />
     <PackageVersion Include="Microsoft.EntityFrameworkCore" Version="10.0.10" />

backend/src/Tnsu.ApprovalRoute.Api/Controllers/RequestTypesController.cs

@@ -20,11 +20,11 @@ public sealed class RequestTypesController(RequestTypeService service) : Control
 
     [HttpPost]
     public async Task<IActionResult> Create(CreateRequestTypeRequest body, CancellationToken ct) =>
-        (await service.CreateAsync(body.Name, body.PageUrl, ct)).ToActionResult();
+        (await service.CreateAsync(body, ct)).ToActionResult();
 
     [HttpPut("{id:guid}")]
     public async Task<IActionResult> Update(Guid id, UpdateRequestTypeRequest body, CancellationToken ct) =>
-        (await service.UpdateAsync(id, body.Name, body.PageUrl, ct)).ToActionResult();
+        (await service.UpdateAsync(id, body, ct)).ToActionResult();
 
     [HttpDelete("{id:guid}")]
     public async Task<IActionResult> Delete(Guid id, CancellationToken ct) =>

backend/src/Tnsu.ApprovalRoute.Api/Controllers/TemplateRoutesController.cs

@@ -2,7 +2,6 @@ using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Tnsu.ApprovalRoute.Api.Common;
 using Tnsu.ApprovalRoute.Application.TemplateRoutes;
-using Tnsu.ApprovalRoute.Domain.Enums;
 
 namespace Tnsu.ApprovalRoute.Api.Controllers;
 
@@ -12,13 +11,8 @@ namespace Tnsu.ApprovalRoute.Api.Controllers;
 public sealed class TemplateRoutesController(TemplateRouteService service) : ControllerBase
 {
     [HttpGet("resolve")]
-    public async Task<IActionResult> Resolve(
+    public async Task<IActionResult> Resolve([FromQuery] ResolveTemplateRouteRequest request, CancellationToken ct) =>
-        [FromQuery] Guid requestTypeId,
+        (await service.ResolveAsync(request, ct)).ToActionResult();
-        [FromQuery] string? userEmail,
-        [FromQuery] Guid? projectId,
-        [FromQuery] RouteStepStatus status,
-        CancellationToken ct) =>
-        (await service.ResolveAsync(requestTypeId, userEmail, projectId, status, ct)).ToActionResult();
 
     [HttpGet]
     public async Task<IActionResult> List([FromQuery] Guid? requestTypeId, CancellationToken ct) =>

backend/src/Tnsu.ApprovalRoute.Api/Filters/ValidationActionFilter.cs

@@ -0,0 +1,35 @@
+using FluentValidation;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Filters;
+
+namespace Tnsu.ApprovalRoute.Api.Filters;
+
+// Валидирует аргументы action'ов, для которых зарегистрирован IValidator<T> — без валидации внутри сервисов.
+public sealed class ValidationActionFilter(IServiceProvider serviceProvider) : IAsyncActionFilter
+{
+    public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
+    {
+        foreach (var argument in context.ActionArguments.Values)
+        {
+            if (argument is null)
+                continue;
+
+            var validatorType = typeof(IValidator<>).MakeGenericType(argument.GetType());
+            if (serviceProvider.GetService(validatorType) is not IValidator validator)
+                continue;
+
+            var validationContext = new ValidationContext<object>(argument);
+            var result = await validator.ValidateAsync(validationContext, context.HttpContext.RequestAborted);
+            if (result.IsValid)
+                continue;
+
+            context.Result = new BadRequestObjectResult(new
+            {
+                message = string.Join(" ", result.Errors.Select(e => e.ErrorMessage))
+            });
+            return;
+        }
+
+        await next();
+    }
+}

backend/src/Tnsu.ApprovalRoute.Api/Program.cs

@@ -5,6 +5,7 @@ using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.OpenApi;
 using Tnsu.ApprovalRoute.Api.Auth;
+using Tnsu.ApprovalRoute.Api.Filters;
 using Tnsu.ApprovalRoute.Application;
 using Tnsu.ApprovalRoute.Application.Common.Interfaces;
 using Tnsu.ApprovalRoute.Infrastructure;
@@ -44,7 +45,7 @@ builder.Services.AddOpenApi(options =>
     });
 });
 builder.Services.AddHealthChecks();
-builder.Services.AddControllers()
+builder.Services.AddControllers(options => options.Filters.Add<ValidationActionFilter>())
     .AddJsonOptions(o => o.JsonSerializerOptions.Converters.Add(new JsonStringEnumConverter()));
 
 var app = builder.Build();

backend/src/Tnsu.ApprovalRoute.Application/ApplicationServiceCollectionExtensions.cs

@@ -1,3 +1,5 @@
+using System.Reflection;
+using FluentValidation;
 using Microsoft.Extensions.DependencyInjection;
 using Tnsu.ApprovalRoute.Application.RequestTypes;
 using Tnsu.ApprovalRoute.Application.TemplateRoutes;
@@ -13,6 +15,8 @@ public static class ApplicationServiceCollectionExtensions
         services.AddScoped<TemplateRouteService>();
         services.AddScoped<TemplateRouteStepService>();
 
+        services.AddValidatorsFromAssembly(Assembly.GetExecutingAssembly());
+
         return services;
     }
 }

backend/src/Tnsu.ApprovalRoute.Application/RequestTypes/RequestTypeService.cs

@@ -27,33 +27,23 @@ public sealed class RequestTypeService(ApprovalRouteDbContext db)
             : Result.Ok(ToDto(entity));
     }
 
-    public async Task<Result<RequestTypeDto>> CreateAsync(string name, string pageUrl, CancellationToken cancellationToken)
+    public async Task<Result<RequestTypeDto>> CreateAsync(CreateRequestTypeRequest request, CancellationToken cancellationToken)
     {
-        if (string.IsNullOrWhiteSpace(name))
+        var entity = new RequestType { Name = request.Name, PageUrl = request.PageUrl };
-            return Result.Fail<RequestTypeDto>(new ValidationError("Имя типа заявки обязательно."));
-        if (string.IsNullOrWhiteSpace(pageUrl))
-            return Result.Fail<RequestTypeDto>(new ValidationError("Url страницы обязателен."));
-
-        var entity = new RequestType { Name = name, PageUrl = pageUrl };
         db.RequestTypes.Add(entity);
         await db.SaveChangesAsync(cancellationToken);
 
         return Result.Ok(ToDto(entity));
     }
 
-    public async Task<Result<RequestTypeDto>> UpdateAsync(Guid id, string name, string pageUrl, CancellationToken cancellationToken)
+    public async Task<Result<RequestTypeDto>> UpdateAsync(Guid id, UpdateRequestTypeRequest request, CancellationToken cancellationToken)
     {
         var entity = await db.RequestTypes.FirstOrDefaultAsync(x => x.Id == id, cancellationToken);
         if (entity is null)
             return Result.Fail<RequestTypeDto>(new NotFoundError("Тип заявки", id));
 
-        if (string.IsNullOrWhiteSpace(name))
+        entity.Name = request.Name;
-            return Result.Fail<RequestTypeDto>(new ValidationError("Имя типа заявки обязательно."));
+        entity.PageUrl = request.PageUrl;
-        if (string.IsNullOrWhiteSpace(pageUrl))
-            return Result.Fail<RequestTypeDto>(new ValidationError("Url страницы обязателен."));
-
-        entity.Name = name;
-        entity.PageUrl = pageUrl;
         await db.SaveChangesAsync(cancellationToken);
 
         return Result.Ok(ToDto(entity));

backend/src/Tnsu.ApprovalRoute.Application/RequestTypes/RequestTypeValidators.cs

@@ -0,0 +1,21 @@
+using FluentValidation;
+
+namespace Tnsu.ApprovalRoute.Application.RequestTypes;
+
+public sealed class CreateRequestTypeRequestValidator : AbstractValidator<CreateRequestTypeRequest>
+{
+    public CreateRequestTypeRequestValidator()
+    {
+        RuleFor(x => x.Name).NotEmpty().WithMessage("Имя типа заявки обязательно.");
+        RuleFor(x => x.PageUrl).NotEmpty().WithMessage("Url страницы обязателен.");
+    }
+}
+
+public sealed class UpdateRequestTypeRequestValidator : AbstractValidator<UpdateRequestTypeRequest>
+{
+    public UpdateRequestTypeRequestValidator()
+    {
+        RuleFor(x => x.Name).NotEmpty().WithMessage("Имя типа заявки обязательно.");
+        RuleFor(x => x.PageUrl).NotEmpty().WithMessage("Url страницы обязателен.");
+    }
+}

backend/src/Tnsu.ApprovalRoute.Application/TemplateRouteSteps/TemplateRouteStepService.cs

@@ -37,9 +37,9 @@ public sealed class TemplateRouteStepService(ApprovalRouteDbContext db)
         if (route is null)
             return Result.Fail<TemplateRouteStepDto>(new NotFoundError("Маршрут", routeId));
 
-        var fieldsError = ValidateFields(r.ExecutorEmail, r.Position, r.ProjectRole, route.ByProject);
+        if (!route.ByProject && r.ProjectRole != ProjectRole.None)
-        if (fieldsError is not null)
+            return Result.Fail<TemplateRouteStepDto>(new ValidationError(
-            return Result.Fail<TemplateRouteStepDto>(fieldsError);
+                "Роль в проекте недопустима для шага маршрута, который не учитывает проект (by_project = false)."));
 
         var entity = new TemplateRouteStep
         {
@@ -70,9 +70,9 @@ public sealed class TemplateRouteStepService(ApprovalRouteDbContext db)
         if (entity is null)
             return Result.Fail<TemplateRouteStepDto>(new NotFoundError("Шаг маршрута", id));
 
-        var fieldsError = ValidateFields(r.ExecutorEmail, r.Position, r.ProjectRole, route.ByProject);
+        if (!route.ByProject && r.ProjectRole != ProjectRole.None)
-        if (fieldsError is not null)
+            return Result.Fail<TemplateRouteStepDto>(new ValidationError(
-            return Result.Fail<TemplateRouteStepDto>(fieldsError);
+                "Роль в проекте недопустима для шага маршрута, который не учитывает проект (by_project = false)."));
 
         entity.OrderNo = r.OrderNo;
         entity.ExecutorEmail = r.ExecutorEmail;
@@ -99,17 +99,6 @@ public sealed class TemplateRouteStepService(ApprovalRouteDbContext db)
         return Result.Ok();
     }
 
-    private static IError? ValidateFields(string executorEmail, string position, ProjectRole projectRole, bool routeByProject)
-    {
-        if (string.IsNullOrWhiteSpace(executorEmail) && string.IsNullOrWhiteSpace(position) && projectRole == ProjectRole.None)
-            return new ValidationError("Исполнитель, должность и роль в проекте не могут быть пустыми одновременно.");
-
-        if (!routeByProject && projectRole != ProjectRole.None)
-            return new ValidationError("Роль в проекте недопустима для шага маршрута, который не учитывает проект (by_project = false).");
-
-        return null;
-    }
-
     private async Task<Result<TemplateRouteStepDto>> AppendMissingProjectRoleWarningAsync(
         TemplateRoute route, Result<TemplateRouteStepDto> result, CancellationToken cancellationToken)
     {

backend/src/Tnsu.ApprovalRoute.Application/TemplateRouteSteps/TemplateRouteStepValidators.cs

@@ -0,0 +1,24 @@
+using FluentValidation;
+using Tnsu.ApprovalRoute.Domain.Enums;
+
+namespace Tnsu.ApprovalRoute.Application.TemplateRouteSteps;
+
+public sealed class CreateTemplateRouteStepRequestValidator : AbstractValidator<CreateTemplateRouteStepRequest>
+{
+    public CreateTemplateRouteStepRequestValidator()
+    {
+        RuleFor(x => x)
+            .Must(x => !(string.IsNullOrWhiteSpace(x.ExecutorEmail) && string.IsNullOrWhiteSpace(x.Position) && x.ProjectRole == ProjectRole.None))
+            .WithMessage("Исполнитель, должность и роль в проекте не могут быть пустыми одновременно.");
+    }
+}
+
+public sealed class UpdateTemplateRouteStepRequestValidator : AbstractValidator<UpdateTemplateRouteStepRequest>
+{
+    public UpdateTemplateRouteStepRequestValidator()
+    {
+        RuleFor(x => x)
+            .Must(x => !(string.IsNullOrWhiteSpace(x.ExecutorEmail) && string.IsNullOrWhiteSpace(x.Position) && x.ProjectRole == ProjectRole.None))
+            .WithMessage("Исполнитель, должность и роль в проекте не могут быть пустыми одновременно.");
+    }
+}

backend/src/Tnsu.ApprovalRoute.Application/TemplateRoutes/ResolveTemplateRouteDto.cs

@@ -17,3 +17,9 @@ public sealed record ResolveTemplateRouteResultDto(
     RouteType RouteType,
     bool RequiresControl,
     IReadOnlyList<ResolvedRouteStepDto> Steps);
+
+public sealed record ResolveTemplateRouteRequest(
+    Guid RequestTypeId,
+    string? UserEmail,
+    Guid? ProjectId,
+    RouteStepStatus Status);

backend/src/Tnsu.ApprovalRoute.Application/TemplateRoutes/TemplateRouteService.cs

@@ -39,9 +39,6 @@ public sealed class TemplateRouteService(
 
     public async Task<Result<TemplateRouteDto>> CreateAsync(CreateTemplateRouteRequest r, CancellationToken cancellationToken)
     {
-        if (r.CompanyId == Guid.Empty)
-            return Result.Fail<TemplateRouteDto>(new ValidationError("Компания обязательна."));
-
         var requestTypeExists = await db.RequestTypes.AnyAsync(x => x.Id == r.RequestTypeId, cancellationToken);
         if (!requestTypeExists)
             return Result.Fail<TemplateRouteDto>(new NotFoundError("Тип заявки", r.RequestTypeId));
@@ -72,9 +69,6 @@ public sealed class TemplateRouteService(
         if (entity is null)
             return Result.Fail<TemplateRouteDto>(new NotFoundError("Маршрут", id));
 
-        if (r.CompanyId == Guid.Empty)
-            return Result.Fail<TemplateRouteDto>(new ValidationError("Компания обязательна."));
-
         var duplicate = await HasDuplicateAsync(entity.RequestTypeId, r.DepartmentId, r.CompanyId, r.ByProject, excludeId: entity.Id, cancellationToken);
         if (duplicate)
             return Result.Fail<TemplateRouteDto>(new ConflictError(
@@ -103,28 +97,24 @@ public sealed class TemplateRouteService(
     }
 
     public async Task<Result<ResolveTemplateRouteResultDto>> ResolveAsync(
-        Guid requestTypeId, string? userEmail, Guid? projectId, RouteStepStatus status, CancellationToken cancellationToken)
+        ResolveTemplateRouteRequest request, CancellationToken cancellationToken)
     {
-        if (status == RouteStepStatus.None)
+        var email = string.IsNullOrWhiteSpace(request.UserEmail) ? currentUser.Email : request.UserEmail;
-            return Result.Fail<ResolveTemplateRouteResultDto>(
-                new ValidationError("Статус обязателен: Approval или Execution."));
-
-        var email = string.IsNullOrWhiteSpace(userEmail) ? currentUser.Email : userEmail;
         if (string.IsNullOrWhiteSpace(email))
             return Result.Fail<ResolveTemplateRouteResultDto>(
                 new ValidationError("Не удалось определить email инициатора: не передан явно и отсутствует в токене."));
 
-        var requestTypeExists = await db.RequestTypes.AnyAsync(x => x.Id == requestTypeId, cancellationToken);
+        var requestTypeExists = await db.RequestTypes.AnyAsync(x => x.Id == request.RequestTypeId, cancellationToken);
         if (!requestTypeExists)
-            return Result.Fail<ResolveTemplateRouteResultDto>(new NotFoundError("Тип заявки", requestTypeId));
+            return Result.Fail<ResolveTemplateRouteResultDto>(new NotFoundError("Тип заявки", request.RequestTypeId));
 
         var employee = await portalClient.GetEmployeeByEmailAsync(email, cancellationToken);
-        var byProject = projectId is not null;
+        var byProject = request.ProjectId is not null;
 
         var route = await db.TemplateRoutes.AsNoTracking()
             .Include(x => x.Steps)
             .Where(x =>
-                x.RequestTypeId == requestTypeId &&
+                x.RequestTypeId == request.RequestTypeId &&
                 x.CompanyId == employee.CompanyId &&
                 x.ByProject == byProject &&
                 x.DepartmentId == employee.DepartmentId)
@@ -132,7 +122,7 @@ public sealed class TemplateRouteService(
             ?? await db.TemplateRoutes.AsNoTracking()
                 .Include(x => x.Steps)
                 .Where(x =>
-                    x.RequestTypeId == requestTypeId &&
+                    x.RequestTypeId == request.RequestTypeId &&
                     x.CompanyId == employee.CompanyId &&
                     x.ByProject == byProject &&
                     x.DepartmentId == null)
@@ -141,14 +131,14 @@ public sealed class TemplateRouteService(
         if (route is null)
             return Result.Fail<ResolveTemplateRouteResultDto>(new NotFoundError(
                 "Маршрут для этого типа заявки, отдела/компании инициатора и признака «по проекту»",
-                requestTypeId));
+                request.RequestTypeId));
 
         IReadOnlyList<ProjectExecutorInfo> projectExecutors = [];
-        if (projectId is { } id)
+        if (request.ProjectId is { } projectId)
-            projectExecutors = await portalClient.GetProjectExecutorsAsync(id, cancellationToken);
+            projectExecutors = await portalClient.GetProjectExecutorsAsync(projectId, cancellationToken);
 
         var steps = route.Steps
-            .Where(s => s.Status == status)
+            .Where(s => s.Status == request.Status)
             .OrderBy(s => s.OrderNo)
             .Select(s => ResolveStep(s, projectExecutors))
             .ToList();

backend/src/Tnsu.ApprovalRoute.Application/TemplateRoutes/TemplateRouteValidators.cs

@@ -0,0 +1,28 @@
+using FluentValidation;
+using Tnsu.ApprovalRoute.Domain.Enums;
+
+namespace Tnsu.ApprovalRoute.Application.TemplateRoutes;
+
+public sealed class CreateTemplateRouteRequestValidator : AbstractValidator<CreateTemplateRouteRequest>
+{
+    public CreateTemplateRouteRequestValidator()
+    {
+        RuleFor(x => x.CompanyId).NotEqual(Guid.Empty).WithMessage("Компания обязательна.");
+    }
+}
+
+public sealed class UpdateTemplateRouteRequestValidator : AbstractValidator<UpdateTemplateRouteRequest>
+{
+    public UpdateTemplateRouteRequestValidator()
+    {
+        RuleFor(x => x.CompanyId).NotEqual(Guid.Empty).WithMessage("Компания обязательна.");
+    }
+}
+
+public sealed class ResolveTemplateRouteRequestValidator : AbstractValidator<ResolveTemplateRouteRequest>
+{
+    public ResolveTemplateRouteRequestValidator()
+    {
+        RuleFor(x => x.Status).NotEqual(RouteStepStatus.None).WithMessage("Статус обязателен: Approval или Execution.");
+    }
+}

backend/src/Tnsu.ApprovalRoute.Application/Tnsu.ApprovalRoute.Application.csproj

@@ -5,6 +5,8 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="FluentResults" />
+    <PackageReference Include="FluentValidation" />
+    <PackageReference Include="FluentValidation.DependencyInjectionExtensions" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" />
   </ItemGroup>
 </Project>