338 lines
9.7 KiB
C#
338 lines
9.7 KiB
C#
using Entities.DTO;
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using System.Text.Json.Serialization;
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using System.Text.Json;
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using Entities.Contracts;
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using Microsoft.Extensions.Options;
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namespace TechHelper.Client.Exam
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{
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public class ParentStructInfo
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{
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public string Number { get; set; }
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public SubjectAreaEnum SubjectArea { get; set; }
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public byte Index { get; set; }
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}
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public static class ExamPaperExtensions
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{
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public static AssignmentDto ConvertToExamDTO(this ExamPaper examPaper)
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{
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AssignmentDto dto = new AssignmentDto();
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dto.Title = examPaper.AssignmentTitle;
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dto.Description = examPaper.Description;
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var SubjectArea = SubjectAreaEnum.Literature;
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Enum.TryParse<SubjectAreaEnum>(examPaper.SubjectArea, out SubjectArea);
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dto.SubjectArea = SubjectArea;
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AssignmentStructDto examStruct = new AssignmentStructDto();
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foreach (var qg in examPaper.QuestionGroups)
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{
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examStruct.ChildrenGroups.Add(ParseMajorQuestionGroup(qg));
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examStruct.ChildrenGroups.Last().Index = (byte)(examStruct.ChildrenGroups.Count());
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}
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dto.ExamStruct = examStruct;
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return dto;
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}
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private static AssignmentStructDto ParseMajorQuestionGroup(MajorQuestionGroup sqg)
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{
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var examStruct = new AssignmentStructDto();
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if (sqg.SubQuestionGroups != null)
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{
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examStruct.Title = sqg.Title;
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examStruct.Score = sqg.Score;
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examStruct.ChildrenGroups = new List<AssignmentStructDto>();
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sqg.SubQuestionGroups?.ForEach(ssqg =>
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{
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if (string.IsNullOrEmpty(ssqg.Descript))
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{
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examStruct.ChildrenGroups.Add(ParseMajorQuestionGroup(ssqg));
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examStruct.ChildrenGroups.Last().Index = (byte)(examStruct.ChildrenGroups.Count());
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}
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else
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{
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examStruct.AssignmentQuestions.Add(ParseGroupToAssignmentQuestion(ssqg, false));
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examStruct.AssignmentQuestions.Last().Index = (byte)(examStruct.AssignmentQuestions.Count());
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}
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});
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}
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if (sqg.SubQuestions != null)
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{
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sqg.SubQuestions?.ForEach(sq =>
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{
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if(sq.SubQuestions.Any())
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{
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}
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examStruct.AssignmentQuestions.Add(ParseAssignmentQuestion(sq));
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examStruct.AssignmentQuestions.Last().Index = (byte)(examStruct.AssignmentQuestions.Count());
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});
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}
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return examStruct;
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}
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public static List<string> ParseOptionsFromText(this string optionsText)
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{
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return optionsText.Split(new[] { "\r\n", "\r", "\n" }, StringSplitOptions.None)
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.Where(line => !string.IsNullOrWhiteSpace(line)).ToList();
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}
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private static QuestionDto ParseGroupToQuestion(MajorQuestionGroup qg, bool subQ = true)
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{
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var dq = new QuestionDto();
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dq.Title = qg.Title + Environment.NewLine + qg.Descript;
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if (subQ) dq.GroupState = QuestionGroupState.Subquestion;
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else dq.GroupState = QuestionGroupState.Group;
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qg.SubQuestions?.ForEach(ssq =>
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{
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dq.ChildrenQuestion.Add(ParseQuestion(ssq));
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});
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qg.SubQuestionGroups?.ForEach(sqg =>
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{
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dq.ChildrenQuestion.Add(ParseGroupToQuestion(sqg));
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});
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return dq;
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}
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private static AssignmentQuestionDto ParseGroupToAssignmentQuestion(MajorQuestionGroup qg, bool subQ = true)
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{
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var aq = new AssignmentQuestionDto();
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aq.Score = qg.Score;
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qg.SubQuestions?.ForEach(ssq =>
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{
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aq.Question.ChildrenQuestion.Add(ParseQuestion(ssq));
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aq.Question.ChildrenQuestion.Last().Index = (byte)aq.Question.ChildrenQuestion.Count;
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});
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qg.SubQuestionGroups?.ForEach(sqg =>
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{
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aq.Question.ChildrenQuestion.Add(ParseGroupToQuestion(sqg));
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aq.Question.ChildrenQuestion.Last().Index = (byte)aq.Question.ChildrenQuestion.Count;
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});
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return aq;
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}
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private static AssignmentQuestionDto ParseAssignmentQuestion(PaperQuestion sq)
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{
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var aq = new AssignmentQuestionDto();
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aq.Score = sq.Score;
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aq.Question = ParseQuestion(sq);
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sq.SubQuestions?.ForEach(ssq =>
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{
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aq.Question.ChildrenQuestion.Add(ParseQuestion(ssq));
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aq.Question.ChildrenQuestion.Last().Index = (byte)aq.Question.ChildrenQuestion.Count;
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});
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return aq;
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}
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private static QuestionDto ParseQuestion(PaperQuestion sq)
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{
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var dq = new QuestionDto();
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dq.Title = sq.Stem;
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dq.Options = string.Join(Environment.NewLine, sq.Options.Select(opt => $"{opt.Label} {opt.Text}"));
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dq.Score = sq.Score;
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sq.SubQuestions?.ForEach(ssq =>
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{
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dq.ChildrenQuestion.Add(ParseQuestion(ssq));
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dq.ChildrenQuestion.Last().Index = (byte)dq.ChildrenQuestion.Count;
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});
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return dq;
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}
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private static void ParseMajorQuestionGroup(MajorQuestionGroup qg, QuestionGroupDto qgd, bool isParentGroupValidChain)
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{
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qgd.Title = qg.Title;
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qgd.Score = (int)qg.Score;
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qgd.Descript = qg.Descript;
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qgd.ValidQuestionGroup = !string.IsNullOrEmpty(qg.Descript) && !isParentGroupValidChain;
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bool nextIsParentGroupValidChain = qgd.ValidQuestionGroup || isParentGroupValidChain;
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if (qg.SubQuestionGroups != null)
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{
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qg.SubQuestionGroups.ForEach(sqg =>
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{
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var sqgd = new QuestionGroupDto();
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sqgd.Index = (byte)qg.SubQuestionGroups.IndexOf(sqg);
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ParseMajorQuestionGroup(sqg, sqgd, nextIsParentGroupValidChain);
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qgd.SubQuestionGroups.Add(sqgd);
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});
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}
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if (qg.SubQuestions != null)
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{
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qg.SubQuestions.ForEach(sq =>
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{
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if (sq.SubQuestions != null && sq.SubQuestions.Any())
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{
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var subQgd = new QuestionGroupDto
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{
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Title = sq.Stem,
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Index = (byte)qg.SubQuestions.IndexOf(sq),
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Score = (int)sq.Score,
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Descript = "" // 默认为空
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};
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subQgd.ValidQuestionGroup = !string.IsNullOrEmpty(subQgd.Descript) && !nextIsParentGroupValidChain;
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ParseQuestionWithSubQuestions(sq, subQgd, subQgd.ValidQuestionGroup || nextIsParentGroupValidChain);
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qgd.SubQuestionGroups.Add(subQgd);
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}
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else // 如果 MajorQuestionGroup 下的 Question 没有子问题，则转为 SubQuestionDto
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{
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var subQd = new SubQuestionDto();
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// 只有当所有父组（包括当前组）都不是有效组时，这个题目才有效
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ParseSingleQuestion(sq, subQd, !nextIsParentGroupValidChain);
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subQd.Index = (byte)qg.SubQuestions.IndexOf(sq);
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qgd.SubQuestions.Add(subQd);
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}
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});
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}
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}
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// 解析包含子问题的 Question，将其转换为 QuestionGroupDto
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// isParentGroupValidChain 参数表示从顶层到当前组的任一父组是否已经是“有效组”
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private static void ParseQuestionWithSubQuestions(PaperQuestion question, QuestionGroupDto qgd, bool isParentGroupValidChain)
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{
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qgd.Title = question.Stem;
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qgd.Score = (int)question.Score;
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qgd.Descript = ""; // 默认为空
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// 判断当前组是否有效：如果有描述，并且其父级链中没有任何一个组是有效组，则当前组有效
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qgd.ValidQuestionGroup = !string.IsNullOrEmpty(qgd.Descript) && !isParentGroupValidChain;
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// 更新传递给子项的 isParentGroupValidChain 状态
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bool nextIsParentGroupValidChain = qgd.ValidQuestionGroup || isParentGroupValidChain;
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if (question.SubQuestions != null)
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{
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question.SubQuestions.ForEach(subQ =>
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{
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// 如果子问题本身还有子问题（多层嵌套），则继续创建 QuestionGroupDto
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if (subQ.SubQuestions != null && subQ.SubQuestions.Any())
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{
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var nestedQgd = new QuestionGroupDto
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{
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Title = subQ.Stem,
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Score = (int)subQ.Score,
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Descript = "" // 默认为空
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};
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// 判断当前组是否有效：如果有描述，并且其父级链中没有任何一个组是有效组，则当前组有效
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nestedQgd.ValidQuestionGroup = !string.IsNullOrEmpty(nestedQgd.Descript) && !nextIsParentGroupValidChain;
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ParseQuestionWithSubQuestions(subQ, nestedQgd, nestedQgd.ValidQuestionGroup || nextIsParentGroupValidChain);
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qgd.SubQuestionGroups.Add(nestedQgd);
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}
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else // 如果子问题没有子问题，则直接创建 SubQuestionDto
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{
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var subQd = new SubQuestionDto();
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// 只有当所有父组（包括当前组）都不是有效组时，这个题目才有效
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ParseSingleQuestion(subQ, subQd, !nextIsParentGroupValidChain);
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qgd.SubQuestions.Add(subQd);
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}
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});
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}
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}
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// 解析单个 Question (没有子问题) 为 SubQuestionDto
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private static void ParseSingleQuestion(PaperQuestion question, SubQuestionDto subQd, bool validQ)
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{
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subQd.Stem = question.Stem;
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subQd.Score = (int)question.Score;
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subQd.ValidQuestion = validQ; // 根据传入的 validQ 确定是否是“有效题目”
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subQd.SampleAnswer = question.SampleAnswer;
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subQd.QuestionType = question.QuestionType;
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// 注意：DifficultyLevel 在本地 Question 中没有，如果服务器需要，可能需要补充默认值或从其他地方获取
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// subQd.DifficultyLevel = ...;
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if (question.Options != null)
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{
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question.Options.ForEach(o =>
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{
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subQd.Options.Add(new OptionDto { Value = o.Label + o.Text });
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});
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}
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}
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public static void SeqIndex(this ExamDto dto)
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{
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dto.ExamStruct.SeqQGroupIndex();
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}
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public static void SeqQGroupIndex(this QuestionGroupDto dto)
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{
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dto.SubQuestions?.ForEach(sq =>
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{
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sq.Index = (byte)dto.SubQuestions.IndexOf(sq);
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});
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dto.SubQuestionGroups?.ForEach(sqg =>
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{
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sqg.Index = (byte)dto.SubQuestionGroups.IndexOf(sqg);
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sqg.SeqQGroupIndex();
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});
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}
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public static string SerializeExamDto(this ExamDto dto)
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{
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// 配置序列化选项（可选）
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var options = new JsonSerializerOptions
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{
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WriteIndented = true,
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PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
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DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull
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};
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return JsonSerializer.Serialize(dto, options);
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}
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public static ExamDto DeserializeExamDto(string jsonString)
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{
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var options = new JsonSerializerOptions
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{
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PropertyNamingPolicy = JsonNamingPolicy.CamelCase
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};
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return JsonSerializer.Deserialize<ExamDto>(jsonString, options);
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}
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}
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}
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