重构项目结构，移除Assignment相关功能，优化Submission模块

TechHelper.Server/Controllers/QuestionTypeController.cs

@@ -0,0 +1,145 @@
+using Entities.Contracts;
+using Entities.DTO;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using System.Diagnostics;
+using System.Net;
+using System.Security.Claims;
+using TechHelper.Services.Beta;
+using TechHelper.Services;
+
+namespace TechHelper.Server.Controllers
+{
+    /// <summary>
+    /// 题型管理控制器
+    /// 处理题型相关的操作，如创建、更新、删除题型等
+    /// </summary>
+    [Route("api/question-type")]
+    [ApiController]
+    public class QuestionTypeController : ControllerBase
+    {
+        private readonly IQuestionTypeService _questionTypeService;
+        private readonly UserManager<User> _userManager;
+
+        /// <summary>
+        /// 初始化题型控制器
+        /// </summary>
+        /// <param name="questionTypeService">题型服务</param>
+        /// <param name="userManager">用户管理服务</param>
+        public QuestionTypeController(IQuestionTypeService questionTypeService, UserManager<User> userManager)
+        {
+            _questionTypeService = questionTypeService;
+            _userManager = userManager;
+        }
+
+        #region 题型基本信息CRUD操作
+
+        /// <summary>
+        /// 获取题型列表（支持搜索）
+        /// </summary>
+        /// <param name="query">查询参数</param>
+        /// <returns>题型列表</returns>
+        /// <response code="200">成功获取题型列表</response>
+        /// <response code="400">获取失败</response>
+        [HttpGet]
+        [Authorize(Roles = "Teacher,Admin")]
+        public async Task<IActionResult> GetAll([FromQuery] QueryParameter query)
+        {
+            var result = await _questionTypeService.GetAllAsync(query);
+            
+            if (!result.Status)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Result);
+        }
+
+        /// <summary>
+        /// 根据ID获取题型详细信息
+        /// </summary>
+        /// <param name="id">题型ID</param>
+        /// <returns>题型详细信息</returns>
+        /// <response code="200">成功获取题型信息</response>
+        /// <response code="400">题型未找到或获取失败</response>
+        [HttpGet("{id}")]
+        [Authorize(Roles = "Teacher,Admin")]
+        public async Task<IActionResult> GetById(Guid id)
+        {
+            var result = await _questionTypeService.GetAsync(id);
+            
+            if (!result.Status)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Result);
+        }
+
+        /// <summary>
+        /// 创建新题型
+        /// </summary>
+        /// <param name="model">题型数据传输对象</param>
+        /// <returns>创建结果</returns>
+        /// <response code="200">创建成功</response>
+        /// <response code="400">创建失败</response>
+        [HttpPost]
+        [Authorize(Roles = "Admin, Teacher")]
+        public async Task<IActionResult> Create([FromBody] QuestionTypeDto model)
+        {
+            var result = await _questionTypeService.AddAsync(model);
+            
+            if (!result.Status)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Result);
+        }
+
+        /// <summary>
+        /// 更新题型信息
+        /// </summary>
+        /// <param name="model">题型数据传输对象</param>
+        /// <returns>更新结果</returns>
+        /// <response code="200">更新成功</response>
+        /// <response code="400">更新失败</response>
+        [HttpPut]
+        [Authorize(Roles = "Admin")]
+        public async Task<IActionResult> Update([FromBody] QuestionTypeDto model)
+        {
+            var result = await _questionTypeService.UpdateAsync(model);
+            
+            if (!result.Status)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Result);
+        }
+
+        /// <summary>
+        /// 删除题型
+        /// </summary>
+        /// <param name="id">题型ID</param>
+        /// <returns>删除结果</returns>
+        /// <response code="200">删除成功</response>
+        /// <response code="400">删除失败</response>
+        [HttpDelete("{id}")]
+        [Authorize(Roles = "Admin")]
+        public async Task<IActionResult> Delete(Guid id)
+        {
+            var result = await _questionTypeService.DeleteAsync(id);
+            
+            if (!result.Status)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Message);
+        }
+
+        #endregion
+    }
+}