重构试卷相关内容

TechHelper.Server/Services/ExamService2.cs

@@ -0,0 +1,115 @@
+using AutoMapper;
+using Entities.Contracts;
+using Entities.DTO;
+using SharedDATA.Api;
+using TechHelper.Server.Repository;
+using TechHelper.Services;
+
+namespace TechHelper.Server.Services
+{
+
+	public class ExamService2 : IExamService2
+	{
+		private readonly IUnitOfWork _unitOfWork;
+		private readonly IExamRepository _examRepository;
+		private readonly IMapper _mapper;
+
+		public ExamService2(IUnitOfWork unitOfWork, IExamRepository examRepository, IMapper mapper)
+		{
+			_unitOfWork = unitOfWork;
+			_examRepository = examRepository;
+			_mapper = mapper;
+		}
+
+		public async Task<Guid> CreateExamAsync(ExamDto examDto, Guid creatorId)
+		{
+			if (examDto.QuestionGroups == null)
+			{
+				throw new ArgumentException("试卷必须包含一个根题组。");
+			}
+
+			// 使用 AutoMapper 将 DTO 映射到实体
+			var assignment = _mapper.Map<Assignment>(examDto);
+
+			// 设置后端生成的属性
+			assignment.Id = Guid.NewGuid();
+			assignment.CreatedBy = creatorId;
+			assignment.CreatedAt = DateTime.UtcNow;
+
+			// 递归设置所有子实体的ID和关联关系
+			SetEntityIdsAndRelations(assignment.AssignmentGroups.First(), assignment.Id, creatorId);
+
+			await _examRepository.AddAsync(assignment);
+			await _unitOfWork.SaveChangesAsync();
+
+			return assignment.Id;
+		}
+
+		private void SetEntityIdsAndRelations(AssignmentGroup group, Guid? assignmentId, Guid creatorId)
+		{
+			group.Id = Guid.NewGuid();
+			group.AssignmentId = assignmentId;
+
+			foreach (var aq in group.AssignmentQuestions)
+			{
+				aq.Id = Guid.NewGuid();
+				aq.AssignmentGroupId = group.Id;
+				aq.Question.Id = Guid.NewGuid();
+				aq.Question.CreatedBy = creatorId;
+				aq.CreatedAt = DateTime.UtcNow;
+				// ... 其他默认值
+			}
+
+			foreach (var childGroup in group.ChildAssignmentGroups)
+			{
+				// 子题组的 AssignmentId 为 null，通过 ParentGroup 关联
+				SetEntityIdsAndRelations(childGroup, null, creatorId);
+				childGroup.ParentGroup = group.Id;
+			}
+		}
+
+		public async Task<ExamDto> GetExamByIdAsync(Guid id)
+		{
+			var assignment = await _examRepository.GetFullExamByIdAsync(id);
+			if (assignment == null)
+			{
+
+				throw new InvalidOperationException("");
+			}
+
+			return _mapper.Map<ExamDto>(assignment);
+		}
+
+		public async Task<IEnumerable<ExamDto>> GetAllExamPreviewsAsync(Guid userId)
+		{
+			var assignments = await _examRepository.GetExamPreviewsByUserAsync(userId);
+			return _mapper.Map<IEnumerable<ExamDto>>(assignments);
+		}
+
+		public Task<ApiResponse> GetAllAsync(QueryParameter query)
+		{
+			throw new NotImplementedException();
+		}
+
+		public Task<ApiResponse> GetAsync(Guid id)
+		{
+			throw new NotImplementedException();
+		}
+
+		public Task<ApiResponse> AddAsync(ExamDto model)
+		{
+			throw new NotImplementedException();
+		}
+
+		public Task<ApiResponse> UpdateAsync(ExamDto model)
+		{
+			throw new NotImplementedException();
+		}
+
+		public Task<ApiResponse> DeleteAsync(Guid id)
+		{
+			throw new NotImplementedException();
+		}
+	}
+
+}