refactor: 重构数据库相关操作

server/src/Controllers/ExamController.cs

@@ -14,6 +14,163 @@ public class ExamController : ControllerBase
 {
     private static NLog.Logger logger = NLog.LogManager.GetCurrentClassLogger();
 
+    private readonly Database.ExamManager _examManager;
+
+    public ExamController(Database.ExamManager examManager)
+    {
+        _examManager = examManager;
+    }
+
+    /// <summary>
+    /// 获取所有实验列表
+    /// </summary>
+    /// <returns>实验列表</returns>
+    [Authorize]
+    [HttpGet("list")]
+    [EnableCors("Users")]
+    [ProducesResponseType(typeof(ExamSummary[]), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status401Unauthorized)]
+    [ProducesResponseType(StatusCodes.Status500InternalServerError)]
+    public IActionResult GetExamList()
+    {
+        try
+        {
+            var exams = _examManager.GetAllExams();
+
+            var examSummaries = exams.Select(exam => new ExamSummary
+            {
+                ID = exam.ID,
+                Name = exam.Name,
+                CreatedTime = exam.CreatedTime,
+                UpdatedTime = exam.UpdatedTime,
+                Tags = exam.GetTagsList(),
+                Difficulty = exam.Difficulty,
+                IsVisibleToUsers = exam.IsVisibleToUsers
+            }).ToArray();
+
+            logger.Info($"成功获取实验列表，共 {examSummaries.Length} 个实验");
+            return Ok(examSummaries);
+        }
+        catch (Exception ex)
+        {
+            logger.Error($"获取实验列表时出错: {ex.Message}");
+            return StatusCode(StatusCodes.Status500InternalServerError, $"获取实验列表失败: {ex.Message}");
+        }
+    }
+
+    /// <summary>
+    /// 根据实验ID获取实验详细信息
+    /// </summary>
+    /// <param name="examId">实验ID</param>
+    /// <returns>实验详细信息</returns>
+    [Authorize]
+    [HttpGet("{examId}")]
+    [EnableCors("Users")]
+    [ProducesResponseType(typeof(ExamInfo), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status401Unauthorized)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    [ProducesResponseType(StatusCodes.Status500InternalServerError)]
+    public IActionResult GetExam(string examId)
+    {
+        if (string.IsNullOrWhiteSpace(examId))
+            return BadRequest("实验ID不能为空");
+
+        try
+        {
+            var result = _examManager.GetExamByID(examId);
+
+            if (!result.IsSuccessful)
+            {
+                logger.Error($"获取实验时出错: {result.Error.Message}");
+                return StatusCode(StatusCodes.Status500InternalServerError, $"获取实验失败: {result.Error.Message}");
+            }
+
+            if (!result.Value.HasValue)
+            {
+                logger.Warn($"实验不存在: {examId}");
+                return NotFound($"实验 {examId} 不存在");
+            }
+
+            var exam = result.Value.Value;
+            var examInfo = new ExamInfo
+            {
+                ID = exam.ID,
+                Name = exam.Name,
+                Description = exam.Description,
+                CreatedTime = exam.CreatedTime,
+                UpdatedTime = exam.UpdatedTime,
+                Tags = exam.GetTagsList(),
+                Difficulty = exam.Difficulty,
+                IsVisibleToUsers = exam.IsVisibleToUsers
+            };
+
+            logger.Info($"成功获取实验信息: {examId}");
+            return Ok(examInfo);
+        }
+        catch (Exception ex)
+        {
+            logger.Error($"获取实验 {examId} 时出错: {ex.Message}");
+            return StatusCode(StatusCodes.Status500InternalServerError, $"获取实验失败: {ex.Message}");
+        }
+    }
+
+    /// <summary>
+    /// 创建新实验
+    /// </summary>
+    /// <param name="request">创建实验请求</param>
+    /// <returns>创建结果</returns>
+    [Authorize("Admin")]
+    [HttpPost]
+    [EnableCors("Users")]
+    [ProducesResponseType(typeof(ExamInfo), StatusCodes.Status201Created)]
+    [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status401Unauthorized)]
+    [ProducesResponseType(StatusCodes.Status403Forbidden)]
+    [ProducesResponseType(StatusCodes.Status409Conflict)]
+    [ProducesResponseType(StatusCodes.Status500InternalServerError)]
+    public IActionResult CreateExam([FromBody] CreateExamRequest request)
+    {
+        if (string.IsNullOrWhiteSpace(request.ID) || string.IsNullOrWhiteSpace(request.Name) || string.IsNullOrWhiteSpace(request.Description))
+            return BadRequest("实验ID、名称和描述不能为空");
+
+        try
+        {
+            var result = _examManager.CreateExam(request.ID, request.Name, request.Description, request.Tags, request.Difficulty, request.IsVisibleToUsers);
+
+            if (!result.IsSuccessful)
+            {
+                if (result.Error.Message.Contains("已存在"))
+                    return Conflict(result.Error.Message);
+
+                logger.Error($"创建实验时出错: {result.Error.Message}");
+                return StatusCode(StatusCodes.Status500InternalServerError, $"创建实验失败: {result.Error.Message}");
+            }
+
+            var exam = result.Value;
+            var examInfo = new ExamInfo
+            {
+                ID = exam.ID,
+                Name = exam.Name,
+                Description = exam.Description,
+                CreatedTime = exam.CreatedTime,
+                UpdatedTime = exam.UpdatedTime,
+                Tags = exam.GetTagsList(),
+                Difficulty = exam.Difficulty,
+                IsVisibleToUsers = exam.IsVisibleToUsers
+            };
+
+            logger.Info($"成功创建实验: {request.ID}");
+            return CreatedAtAction(nameof(GetExam), new { examId = request.ID }, examInfo);
+        }
+        catch (Exception ex)
+        {
+            logger.Error($"创建实验 {request.ID} 时出错: {ex.Message}");
+            return StatusCode(StatusCodes.Status500InternalServerError, $"创建实验失败: {ex.Message}");
+        }
+    }
+
+
     /// <summary>
     /// 实验信息类
     /// </summary>
@@ -136,156 +293,4 @@ public class ExamController : ControllerBase
         /// </summary>
         public bool IsVisibleToUsers { get; set; } = true;
     }
-
-    /// <summary>
-    /// 获取所有实验列表
-    /// </summary>
-    /// <returns>实验列表</returns>
-    [Authorize]
-    [HttpGet("list")]
-    [EnableCors("Users")]
-    [ProducesResponseType(typeof(ExamSummary[]), StatusCodes.Status200OK)]
-    [ProducesResponseType(StatusCodes.Status401Unauthorized)]
-    [ProducesResponseType(StatusCodes.Status500InternalServerError)]
-    public IActionResult GetExamList()
-    {
-        try
-        {
-            using var db = new Database.AppDataConnection();
-            var exams = db.GetAllExams();
-
-            var examSummaries = exams.Select(exam => new ExamSummary
-            {
-                ID = exam.ID,
-                Name = exam.Name,
-                CreatedTime = exam.CreatedTime,
-                UpdatedTime = exam.UpdatedTime,
-                Tags = exam.GetTagsList(),
-                Difficulty = exam.Difficulty,
-                IsVisibleToUsers = exam.IsVisibleToUsers
-            }).ToArray();
-
-            logger.Info($"成功获取实验列表，共 {examSummaries.Length} 个实验");
-            return Ok(examSummaries);
-        }
-        catch (Exception ex)
-        {
-            logger.Error($"获取实验列表时出错: {ex.Message}");
-            return StatusCode(StatusCodes.Status500InternalServerError, $"获取实验列表失败: {ex.Message}");
-        }
-    }
-
-    /// <summary>
-    /// 根据实验ID获取实验详细信息
-    /// </summary>
-    /// <param name="examId">实验ID</param>
-    /// <returns>实验详细信息</returns>
-    [Authorize]
-    [HttpGet("{examId}")]
-    [EnableCors("Users")]
-    [ProducesResponseType(typeof(ExamInfo), StatusCodes.Status200OK)]
-    [ProducesResponseType(StatusCodes.Status400BadRequest)]
-    [ProducesResponseType(StatusCodes.Status401Unauthorized)]
-    [ProducesResponseType(StatusCodes.Status404NotFound)]
-    [ProducesResponseType(StatusCodes.Status500InternalServerError)]
-    public IActionResult GetExam(string examId)
-    {
-        if (string.IsNullOrWhiteSpace(examId))
-            return BadRequest("实验ID不能为空");
-
-        try
-        {
-            using var db = new Database.AppDataConnection();
-            var result = db.GetExamByID(examId);
-
-            if (!result.IsSuccessful)
-            {
-                logger.Error($"获取实验时出错: {result.Error.Message}");
-                return StatusCode(StatusCodes.Status500InternalServerError, $"获取实验失败: {result.Error.Message}");
-            }
-
-            if (!result.Value.HasValue)
-            {
-                logger.Warn($"实验不存在: {examId}");
-                return NotFound($"实验 {examId} 不存在");
-            }
-
-            var exam = result.Value.Value;
-            var examInfo = new ExamInfo
-            {
-                ID = exam.ID,
-                Name = exam.Name,
-                Description = exam.Description,
-                CreatedTime = exam.CreatedTime,
-                UpdatedTime = exam.UpdatedTime,
-                Tags = exam.GetTagsList(),
-                Difficulty = exam.Difficulty,
-                IsVisibleToUsers = exam.IsVisibleToUsers
-            };
-
-            logger.Info($"成功获取实验信息: {examId}");
-            return Ok(examInfo);
-        }
-        catch (Exception ex)
-        {
-            logger.Error($"获取实验 {examId} 时出错: {ex.Message}");
-            return StatusCode(StatusCodes.Status500InternalServerError, $"获取实验失败: {ex.Message}");
-        }
-    }
-
-    /// <summary>
-    /// 创建新实验
-    /// </summary>
-    /// <param name="request">创建实验请求</param>
-    /// <returns>创建结果</returns>
-    [Authorize("Admin")]
-    [HttpPost]
-    [EnableCors("Users")]
-    [ProducesResponseType(typeof(ExamInfo), StatusCodes.Status201Created)]
-    [ProducesResponseType(StatusCodes.Status400BadRequest)]
-    [ProducesResponseType(StatusCodes.Status401Unauthorized)]
-    [ProducesResponseType(StatusCodes.Status403Forbidden)]
-    [ProducesResponseType(StatusCodes.Status409Conflict)]
-    [ProducesResponseType(StatusCodes.Status500InternalServerError)]
-    public IActionResult CreateExam([FromBody] CreateExamRequest request)
-    {
-        if (string.IsNullOrWhiteSpace(request.ID) || string.IsNullOrWhiteSpace(request.Name) || string.IsNullOrWhiteSpace(request.Description))
-            return BadRequest("实验ID、名称和描述不能为空");
-
-        try
-        {
-            using var db = new Database.AppDataConnection();
-            var result = db.CreateExam(request.ID, request.Name, request.Description, request.Tags, request.Difficulty, request.IsVisibleToUsers);
-
-            if (!result.IsSuccessful)
-            {
-                if (result.Error.Message.Contains("已存在"))
-                    return Conflict(result.Error.Message);
-                
-                logger.Error($"创建实验时出错: {result.Error.Message}");
-                return StatusCode(StatusCodes.Status500InternalServerError, $"创建实验失败: {result.Error.Message}");
-            }
-
-            var exam = result.Value;
-            var examInfo = new ExamInfo
-            {
-                ID = exam.ID,
-                Name = exam.Name,
-                Description = exam.Description,
-                CreatedTime = exam.CreatedTime,
-                UpdatedTime = exam.UpdatedTime,
-                Tags = exam.GetTagsList(),
-                Difficulty = exam.Difficulty,
-                IsVisibleToUsers = exam.IsVisibleToUsers
-            };
-
-            logger.Info($"成功创建实验: {request.ID}");
-            return CreatedAtAction(nameof(GetExam), new { examId = request.ID }, examInfo);
-        }
-        catch (Exception ex)
-        {
-            logger.Error($"创建实验 {request.ID} 时出错: {ex.Message}");
-            return StatusCode(StatusCodes.Status500InternalServerError, $"创建实验失败: {ex.Message}");
-        }
-    }
 }