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

TechHelper.Server/Controllers/KeyPointController.cs

@@ -0,0 +1,167 @@
+using Entities.Contracts;
+using Entities.DTO;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using TechHelper.Services;
+using TechHelper.Services.Beta;
+
+namespace TechHelper.Server.Controllers
+{
+    /// <summary>
+    /// 知识点管理控制器
+    /// 处理知识点相关的操作，如创建、更新、删除知识点等
+    /// </summary>
+    [Route("api/keypoint")]
+    [ApiController]
+    public class KeyPointController : ControllerBase
+    {
+        private readonly IKeyPointService _keyPointService;
+        private readonly UserManager<User> _userManager;
+
+        /// <summary>
+        /// 初始化知识点控制器
+        /// </summary>
+        /// <param name="keyPointService">知识点服务</param>
+        /// <param name="userManager">用户管理服务</param>
+        public KeyPointController(IKeyPointService keyPointService, UserManager<User> userManager)
+        {
+            _keyPointService = keyPointService;
+            _userManager = userManager;
+        }
+
+        #region 知识点基本信息CRUD操作
+
+        /// <summary>
+        /// 获取知识点列表（支持搜索）
+        /// </summary>
+        /// <param name="query">查询参数</param>
+        /// <returns>知识点列表</returns>
+        /// <response code="200">成功获取知识点列表</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 _keyPointService.GetAllAsync(query);
+            
+            if (!result.Status)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Result);
+        }
+
+        /// <summary>
+        /// 根据ID获取知识点详细信息
+        /// </summary>
+        /// <param name="id">知识点ID</param>
+        /// <returns>知识点详细信息</returns>
+        /// <response code="200">成功获取知识点信息</response>
+        /// <response code="400">知识点未找到或获取失败</response>
+        [HttpGet("{id}")]
+        [Authorize(Roles = "Teacher,Admin")]
+        public async Task<IActionResult> GetById(Guid id)
+        {
+            var result = await _keyPointService.GetAsync(id);
+            
+            if (!result.Status)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Result);
+        }
+
+        /// <summary>
+        /// 创建新知识点
+        /// </summary>
+        /// <param name="model">知识点数据传输对象</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 = "Teacher,Admin")]
+        public async Task<IActionResult> Create([FromBody] KeyPointDto model)
+        {
+            var result = await _keyPointService.AddAsync(model);
+            
+            if (!result.Status)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Result);
+        }
+
+        /// <summary>
+        /// 更新知识点信息
+        /// </summary>
+        /// <param name="model">知识点数据传输对象</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 = "Teacher,Admin")]
+        public async Task<IActionResult> Update([FromBody] KeyPointDto model)
+        {
+            var result = await _keyPointService.UpdateAsync(model);
+            
+            if (!result.Status)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Result);
+        }
+
+        /// <summary>
+        /// 删除知识点
+        /// </summary>
+        /// <param name="id">知识点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 = "Teacher,Admin")]
+        public async Task<IActionResult> Delete(Guid id)
+        {
+            var result = await _keyPointService.DeleteAsync(id);
+            
+            if (!result.Status)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Message);
+        }
+
+        #endregion
+
+        #region 知识点扩展操作
+
+        /// <summary>
+        /// 根据课程ID获取知识点列表
+        /// </summary>
+        /// <param name="lessonId">课程ID</param>
+        /// <returns>知识点列表</returns>
+        /// <response code="200">成功获取知识点列表</response>
+        /// <response code="400">获取失败</response>
+        [HttpGet("lesson/{lessonId}")]
+        [Authorize(Roles = "Student,Teacher,Admin")]
+        public async Task<IActionResult> GetByLessonId(Guid lessonId)
+        {
+            var result = await _keyPointService.GetKeyPointsByLessonIdAsync(lessonId);
+            
+            if (!result.Status)
+            {
+                return BadRequest(result.Message);
+            }
+
+            return Ok(result.Result);
+        }
+
+        #endregion
+    }
+}