exam_service

2025-06-11 15:02:20 +08:00
parent 97843ab5fd
commit e26881ec2f
52 changed files with 3510 additions and 1174 deletions
--- a/TechHelper.Server/Services/ExamService.cs
+++ b/TechHelper.Server/Services/ExamService.cs
@@ -3,8 +3,10 @@ using Entities.Contracts;
 using Entities.DTO;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.EntityFrameworkCore;
+using MySqlConnector;
 using SharedDATA.Api;
 using TechHelper.Services;
+using static TechHelper.Context.AutoMapperProFile;

 namespace TechHelper.Server.Services
 {
@@ -81,6 +83,74 @@ namespace TechHelper.Server.Services
 		}


+		public async Task<IEnumerable<AssignmentGroup>> LoadFullGroupTree(Guid rootGroupId)
+		{
+			var query = @"
+        WITH RECURSIVE GroupTree AS (
+            SELECT 
+                ag.*, 
+                CAST(ag.`number` AS CHAR(255)) AS path
+            FROM assignment_group ag 
+            WHERE ag.id = @rootId
+            
+            UNION ALL
+            
+            SELECT 
+                c.*, 
+                CONCAT(ct.path, '.', c.`number`)
+            FROM assignment_group c
+            INNER JOIN GroupTree ct ON c.parent_group = ct.id
+        )
+        SELECT * FROM GroupTree ORDER BY path;
+    ";
+
+			// 执行查询
+			var groups = await _unitOfWork.GetRepository<AssignmentGroup>()
+				.FromSql(query, new MySqlParameter("rootId", rootGroupId))
+				.ToListAsync();
+
+			// 内存中构建树结构
+			var groupDict = groups.ToDictionary(g => g.Id);
+			var root = groupDict[rootGroupId];
+
+			foreach (var group in groups)
+			{
+				if (group.ParentGroup != null && groupDict.TryGetValue(group.ParentGroup.Value, out var parent))
+				{
+					parent.ChildAssignmentGroups ??= new List<AssignmentGroup>();
+					parent.ChildAssignmentGroups.Add(group);
+				}
+			}
+
+			return new List<AssignmentGroup> { root };
+		}
+
+		public async Task LoadRecursiveAssignmentGroups(IEnumerable<AssignmentGroup> groups)
+		{
+			foreach (var group in groups.ToList())
+			{
+
+				var loadedGroup = await _unitOfWork.GetRepository<AssignmentGroup>()
+					.GetFirstOrDefaultAsync(
+						predicate: ag => ag.Id == group.Id,
+						include: source => source
+							.Include(ag => ag.AssignmentQuestions.Where(aq => !aq.IsDeleted))
+								.ThenInclude(aq => aq.Question)
+							.Include(ag => ag.ChildAssignmentGroups)
+					);
+
+				if (loadedGroup == null) continue;
+
+				group.ChildAssignmentGroups = loadedGroup.ChildAssignmentGroups;
+				group.AssignmentQuestions = loadedGroup.AssignmentQuestions;
+
+				if (group.ChildAssignmentGroups is { Count: > 0 })
+				{
+					await LoadRecursiveAssignmentGroups(group.ChildAssignmentGroups);
+				}
+			}
+		}
+
 		public async Task<ApiResponse> GetExamByIdAsync(Guid assignmentId)
 		{
 			try
@@ -93,15 +163,17 @@ namespace TechHelper.Server.Services
 					return ApiResponse.Error($"找不到 ID 为 {assignmentId} 的试卷。");
 				}

+
+
 				// 获取所有相关题组和题目，并过滤掉已删除的
-				var allGroups = await _unitOfWork.GetRepository<AssignmentGroup>().GetAllAsync(
+				var allGroups = await _unitOfWork.GetRepository<AssignmentGroup>().GetFirstOrDefaultAsync(
 					predicate: ag => ag.AssignmentId == assignmentId && !ag.IsDeleted,
 					include: source => source
-						.Include(ag => ag.AssignmentQuestions.Where(aq => !aq.IsDeleted))
-							.ThenInclude(aq => aq.Question)
+					.Include(ag => ag.ChildAssignmentGroups)
 				);
+				await LoadRecursiveAssignmentGroups(allGroups.ChildAssignmentGroups);

-				if (allGroups == null || !allGroups.Any())
+				if (allGroups == null || !allGroups.ChildAssignmentGroups.Any())
 				{
 					// 试卷存在但没有内容，返回一个空的 ExamDto
 					return ApiResponse.Success("试卷没有内容。", new ExamDto
@@ -113,10 +185,16 @@ namespace TechHelper.Server.Services
 					});
 				}

-				var rootGroups = allGroups
-					.Where(ag => ag.ParentGroup == null)
-					.OrderBy(ag => ag.Number)
-					.ToList();
+				var rootGroups = allGroups.ChildAssignmentGroups.ToList();
+
+				var rootqg = new QuestionGroupDto();
+
+				foreach (var ag in rootGroups.OrderBy(g => g.Number))
+				{
+					var agDto = MapAssignmentGroupToDto(ag);
+					rootqg.SubQuestionGroups.Add(agDto);
+				}
+

 				// 递归映射到 ExamDto
 				var examDto = new ExamDto
@@ -125,7 +203,7 @@ namespace TechHelper.Server.Services
 					AssignmentTitle = assignment.Title,
 					Description = assignment.Description,
 					SubjectArea = assignment.Submissions.ToString(),
-					QuestionGroups = MapAssignmentGroupsToDto(rootGroups, allGroups)
+					QuestionGroups = rootqg
 				};

 				return ApiResponse.Success("试卷信息已成功获取。", examDto);
@@ -137,9 +215,45 @@ namespace TechHelper.Server.Services
 		}


-		private List<QuestionGroupDto> MapAssignmentGroupsToDto(
-				List<AssignmentGroup> currentLevelGroups,
-				IEnumerable<AssignmentGroup> allFetchedGroups)
+		public QuestionGroupDto MapAssignmentGroupToDto(AssignmentGroup ag)
+		{
+			// 创建当前节点的DTO
+			var dto = new QuestionGroupDto
+			{
+				Title = ag.Title,
+				Score = (int)(ag.TotalPoints ?? 0),
+				Descript = ag.Descript,
+				SubQuestions = ag.AssignmentQuestions?
+					.OrderBy(aq => aq.QuestionNumber)
+					.Select(aq => new SubQuestionDto
+					{
+						Index = aq.QuestionNumber,
+						Stem = aq.Question?.QuestionText,
+						Score = aq.Score ?? 0,
+						SampleAnswer = aq.Question?.CorrectAnswer,
+						QuestionType = aq.Question?.QuestionType.ToString(),
+						DifficultyLevel = aq.Question?.DifficultyLevel.ToString(),
+						Options = new List<OptionDto>() // 根据需要初始化
+					}).ToList() ?? new List<SubQuestionDto>(),
+				SubQuestionGroups = new List<QuestionGroupDto>() // 初始化子集合
+			};
+
+			// 递归处理子组
+			if (ag.ChildAssignmentGroups != null && ag.ChildAssignmentGroups.Count > 0)
+			{
+				foreach (var child in ag.ChildAssignmentGroups.OrderBy(c => c.Number))
+				{
+					var childDto = MapAssignmentGroupToDto(child); // 递归获取子DTO
+					dto.SubQuestionGroups.Add(childDto); // 添加到当前节点的子集合
+				}
+			}
+
+			return dto;
+		}
+
+		private List<QuestionGroupDto> MapAssignmentGroupsToDto2(
+		List<AssignmentGroup> currentLevelGroups,
+		IEnumerable<AssignmentGroup> allFetchedGroups)
 		{
 			var dtos = new List<QuestionGroupDto>();

@@ -147,25 +261,25 @@ namespace TechHelper.Server.Services
 			{
 				var groupDto = new QuestionGroupDto
 				{
-				    
+
 					Title = group.Title,
 					Score = (int)(group.TotalPoints ?? 0),
-					QuestionReference = group.Descript,
+					Descript = group.Descript,
 					SubQuestions = group.AssignmentQuestions
 										.OrderBy(aq => aq.QuestionNumber)
 										.Select(aq => new SubQuestionDto
 										{
 											Index = aq.QuestionNumber,
 											Stem = aq.Question.QuestionText,
-											Score = aq.Score?? 0, // 使用 AssignmentQuestion 上的 Score
+											Score = aq.Score ?? 0,
 											SampleAnswer = aq.Question.CorrectAnswer,
 											QuestionType = aq.Question.QuestionType.ToString(),
 											DifficultyLevel = aq.Question.DifficultyLevel.ToString(),
-											Options = new List<OptionDto>() // 这里需要您根据实际存储方式填充 Option
+											Options = new List<OptionDto>()
 										}).ToList(),
 					// 递归映射子题组
-					SubQuestionGroups = MapAssignmentGroupsToDto(
-						allFetchedGroups.Where(ag => ag.ParentGroup == group.Id && !ag.IsDeleted).ToList(), // 从所有已获取的组中筛选子组
+					SubQuestionGroups = MapAssignmentGroupsToDto2(
+						allFetchedGroups.Where(ag => ag.ParentGroup == group.Id && !ag.IsDeleted).ToList(),
 						allFetchedGroups)
 				};
 				dtos.Add(groupDto);
@@ -176,7 +290,7 @@ namespace TechHelper.Server.Services
 		public async Task<TechHelper.Services.ApiResponse> SaveParsedExam(ExamDto examData)
 		{
 			// 获取当前登录用户
-			var currentUser = await _userManager.GetUserAsync(null);
+			var currentUser = await _userManager.FindByEmailAsync(examData.CreaterEmail);
 			if (currentUser == null)
 			{
 				return ApiResponse.Error("未找到当前登录用户，无法保存试题。");
@@ -204,16 +318,13 @@ namespace TechHelper.Server.Services

 				// 从 ExamDto.QuestionGroups 获取根题组。
 				// 确保只有一个根题组，因为您的模型是“试卷只有一个根节点”。
-				if (examData.QuestionGroups == null || examData.QuestionGroups.Count != 1)
+				if (examData.QuestionGroups == null)
 				{
 					throw new ArgumentException("试卷必须包含且只能包含一个根题组。");
 				}

-				// 递归处理根题组及其所有子题组和题目
-				// 传入的 assignmentId 仅用于设置根题组的 AssignmentId 字段
-				// 对于子题组，ProcessAndSaveAssignmentGroupsRecursive 会将 AssignmentId 设置为 null
 				await ProcessAndSaveAssignmentGroupsRecursive(
-					examData.QuestionGroups.Single(),
+					examData.QuestionGroups,
 					examData.SubjectArea.ToString(),
 					assignmentId,
 					null, // 根题组没有父级
@@ -246,14 +357,12 @@ namespace TechHelper.Server.Services
 			{
 				Id = Guid.NewGuid(), // 后端生成 GUID
 				Title = qgDto.Title,
-				Descript = qgDto.QuestionReference,
+				Descript = qgDto.Descript,
 				TotalPoints = qgDto.Score,
-				Number = (byte)qgDto.Index, // 使用 DTO 的 Index 作为 Number
-				ParentGroup = parentAssignmentGroupId, // 设置父级题组 GUID
-
-				// 关键修正：只有当 parentAssignmentGroupId 为 null 时，才设置 AssignmentId
-				// 这意味着当前题组是顶级题组
-				AssignmentId = parentAssignmentGroupId == null ? assignmentId : Guid.Empty,
+				Number = (byte)qgDto.Index,
+				ValidQuestionGroup = qgDto.ValidQuestionGroup,
+				ParentGroup = parentAssignmentGroupId,
+				AssignmentId = parentAssignmentGroupId == null ? assignmentId : (Guid?)null,
 				IsDeleted = false
 			};
 			await _unitOfWork.GetRepository<AssignmentGroup>().InsertAsync(newAssignmentGroup);
@@ -268,10 +377,7 @@ namespace TechHelper.Server.Services
 				newQuestion.CreatedAt = DateTime.UtcNow;
 				newQuestion.UpdatedAt = DateTime.UtcNow;
 				newQuestion.IsDeleted = false;
-				newQuestion.SubjectArea = (SubjectAreaEnum)Enum.Parse(typeof(SubjectAreaEnum), subjectarea, true);
-
-				// 处理 Options：如果 Options 是 JSON 字符串或需要其他存储方式，在这里处理
-				// 例如：newQuestion.QuestionText += (JsonConvert.SerializeObject(sqDto.Options));
+				newQuestion.SubjectArea = EnumMappingHelpers.ParseEnumSafe(subjectarea, SubjectAreaEnum.Unknown);

 				await _unitOfWork.GetRepository<Question>().InsertAsync(newQuestion);

@@ -279,9 +385,9 @@ namespace TechHelper.Server.Services
 				{
 					Id = Guid.NewGuid(),
 					QuestionId = newQuestion.Id,
-					QuestionNumber = (byte)questionNumber, // 使用递增的 questionNumber
-					AssignmentGroupId = newAssignmentGroup.Id, // 关联到当前题组
-					Score = sqDto.Score, // 从 DTO 获取单个子题分数
+					QuestionNumber = (byte)questionNumber,
+					AssignmentGroupId = newAssignmentGroup.Id,
+					Score = sqDto.Score,
 					IsDeleted = false,
 					CreatedAt = DateTime.UtcNow
 				};
@@ -302,5 +408,26 @@ namespace TechHelper.Server.Services
 					createdById);
 			}
 		}
+
+		public async Task<ApiResponse> GetAllExamPreview(Guid user)
+		{
+			try
+			{
+				var assignments = await _unitOfWork.GetRepository<Assignment>().GetAllAsync(
+					predicate: a => a.CreatedBy == user && !a.IsDeleted);
+
+				if (assignments.Any())
+				{
+					var exam = _mapper.Map<IEnumerable<ExamDto>>(assignments);
+					return  ApiResponse.Success(result: exam);	
+				}
+
+				return ApiResponse.Error("你还没有创建任何试卷");
+			}
+			catch (Exception ex)
+			{
+				return ApiResponse.Error($"查询出了一点问题 , 详细信息为: {ex.Message}, 请稍后再试");
+			}
+		}
 	}
 }
--- a/TechHelper.Server/Services/IExamService.cs
+++ b/TechHelper.Server/Services/IExamService.cs
@@ -5,6 +5,6 @@ namespace TechHelper.Server.Services
 {
 	public interface IExamService : IBaseService<ExamDto, Guid>
 	{
-
+		Task<ApiResponse> GetAllExamPreview(Guid user);
 	}
 }