Первая часть работы с заявками

ApplicationSystem.Contracts/ApplicationSystem.Contracts.csproj

@@ -6,4 +6,8 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Http.Features" Version="5.0.17" />
+  </ItemGroup>
+
 </Project>

ApplicationSystem.Contracts/Models/Application/ApplicationCreateRequest.cs

@@ -0,0 +1,29 @@
+using Microsoft.AspNetCore.Http;
+using System.ComponentModel.DataAnnotations;
+
+namespace ApplicationSystem.Contracts.Models.Application
+{
+    /// <summary>
+    /// Запрос на создание заявки
+    /// </summary>
+    public record ApplicationCreateRequest
+    {
+        /// <summary>
+        /// Содержимое
+        /// </summary>
+        [Required]
+        [StringLength(1000)]
+        public string Text { get; init; } = null!;
+
+        /// <summary>
+        /// Тип заявки
+        /// </summary>
+        [Required]
+        public Guid TypeId { get; init; }
+
+        /// <summary>
+        /// Файл
+        /// </summary>
+        public IFormFile? File { get; set; }
+    }
+}

ApplicationSystem/ApplicationSystem.csproj

@@ -20,8 +20,13 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\ApplicationSystem.Contracts\ApplicationSystem.Contracts.csproj" />
     <ProjectReference Include="..\ApplicationSystem.Identity\ApplicationSystem.Identity.csproj" />
     <ProjectReference Include="..\ApplicationSystem.MediatrHelper\ApplicationSystem.MediatRHelper.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Folder Include="Models\Queries\AplicationQueries\" />
+  </ItemGroup>
+
 </Project>

ApplicationSystem/Controllers/ApplicationsController.cs

@@ -1,4 +1,6 @@
-using Asp.Versioning;
+using ApplicationSystem.Models.Commands.ApplicationCommands;
+using Asp.Versioning;
+using MediatR;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 
@@ -8,13 +10,16 @@ namespace ApplicationSystem.Controllers
     [Authorize]
     [ApiVersion("1.0")]
     [Route("api/v{version:apiVersion}/[controller]")]
-    public class ApplicationsController : ControllerBase
+    public class ApplicationsController(IMediator mediator) : ControllerBase
     {
+        private readonly IMediator _mediator = mediator;
+
         [HttpPost]
-        public async Task<IActionResult> CreateApplicationAsync()
+        public async Task<IActionResult> CreateApplicationAsync(
+            [FromForm] ApplicationCreateCommand request)
         {
-            await Task.Delay(100);
-            return Ok();
+            var response = await _mediator.Send(request);
+            return StatusCode((int)response.ResponseStatusCode);
         }
 
         [HttpGet]

ApplicationSystem/Models/Commands/ApplicationCommands/ApplicationCreateCommand.cs

@@ -0,0 +1,13 @@
+using ApplicationSystem.Contracts.Models.Application;
+using ApplicationSystem.MediatRHelper.Models;
+
+namespace ApplicationSystem.Models.Commands.ApplicationCommands
+{
+    /// <summary>
+    /// Запрос на создание заявки
+    /// </summary>
+    public record ApplicationCreateCommand 
+        : ApplicationCreateRequest, IRequestModel
+    {
+    }
+}

ApplicationSystem/Models/Queries/AplicationQueries/ApplicationCreateCommand.cs

@@ -1,6 +0,0 @@
-namespace ApplicationSystem.Models.Queries.AplicationQueries
-{
-    public class ApplicationCreateCommand
-    {
-    }
-}

ApplicationSystem/Program.cs

@@ -3,7 +3,9 @@ using ApplicationSystem.Identity.Database.Models;
 
 var builder = WebApplication.CreateBuilder(args);
 
-builder.Services.AddControllers().AddNewtonsoftJson();
+builder.Services
+    .AddControllers()
+    .AddNewtonsoftJson();
 builder.Services.AddEndpointsApiExplorer();
 
 builder.Services.AddSwagger();