修改-试卷总分设置项
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@@ -44,149 +44,14 @@ export class QuizController {
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});
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}
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let questions: Question[] = [];
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const remainingScore = subject.totalScore;
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// 构建包含所有类别的数组，根据比重重复对应次数
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const allCategories: string[] = [];
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for (const [category, catRatio] of Object.entries(subject.categoryRatios)) {
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if (catRatio > 0) {
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// 根据比重计算该类别应占的总题目数比例
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const count = Math.round((catRatio / 100) * 100); // 放大100倍避免小数问题
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for (let i = 0; i < count; i++) {
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allCategories.push(category);
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}
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}
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}
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// 确保总题目数至少为1
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if (allCategories.length === 0) {
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allCategories.push('通用');
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}
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// 按题型分配题目
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for (const [type, typeRatio] of Object.entries(subject.typeRatios)) {
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if (typeRatio <= 0) continue;
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// 计算该题型应占的总分
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const targetTypeScore = Math.round((typeRatio / 100) * subject.totalScore);
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let currentTypeScore = 0;
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let typeQuestions: Question[] = [];
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// 尝试获取足够分数的题目
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while (currentTypeScore < targetTypeScore) {
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// 随机选择一个类别
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const randomCategory = allCategories[Math.floor(Math.random() * allCategories.length)];
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// 获取该类型和类别的随机题目
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const availableQuestions = await QuestionModel.getRandomQuestions(
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type as any,
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10, // 一次获取多个，提高效率
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[randomCategory]
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);
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if (availableQuestions.length === 0) {
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break; // 该类型/类别没有题目，跳过
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}
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// 过滤掉已选题目
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const availableUnselected = availableQuestions.filter(q =>
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!questions.some(selected => selected.id === q.id)
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);
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if (availableUnselected.length === 0) {
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break; // 没有可用的新题目了
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}
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// 选择分数最接近剩余需求的题目
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const remainingForType = targetTypeScore - currentTypeScore;
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const selectedQuestion = availableUnselected.reduce((prev, curr) => {
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const prevDiff = Math.abs(remainingForType - prev.score);
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const currDiff = Math.abs(remainingForType - curr.score);
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return currDiff < prevDiff ? curr : prev;
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});
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// 添加到题型题目列表
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typeQuestions.push(selectedQuestion);
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currentTypeScore += selectedQuestion.score;
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// 防止无限循环
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if (typeQuestions.length > 100) {
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break;
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}
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}
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questions.push(...typeQuestions);
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}
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// 如果总分不足，尝试补充题目
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let totalScore = questions.reduce((sum, q) => sum + q.score, 0);
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while (totalScore < subject.totalScore) {
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// 获取所有类型的随机题目
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const allTypes = Object.keys(subject.typeRatios).filter(type => subject.typeRatios[type as keyof typeof subject.typeRatios] > 0);
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if (allTypes.length === 0) break;
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const randomType = allTypes[Math.floor(Math.random() * allTypes.length)];
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const availableQuestions = await QuestionModel.getRandomQuestions(
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randomType as any,
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10,
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allCategories
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);
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if (availableQuestions.length === 0) break;
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// 过滤掉已选题目
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const availableUnselected = availableQuestions.filter(q =>
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!questions.some(selected => selected.id === q.id)
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);
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if (availableUnselected.length === 0) break;
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// 选择分数最接近剩余需求的题目
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const remainingScore = subject.totalScore - totalScore;
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const selectedQuestion = availableUnselected.reduce((prev, curr) => {
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const prevDiff = Math.abs(remainingScore - prev.score);
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const currDiff = Math.abs(remainingScore - curr.score);
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return currDiff < prevDiff ? curr : prev;
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});
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questions.push(selectedQuestion);
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totalScore += selectedQuestion.score;
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// 防止无限循环
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if (questions.length > 200) {
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break;
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}
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}
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// 如果总分超过，尝试移除一些题目
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while (totalScore > subject.totalScore) {
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// 找到最接近剩余差值的题目
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const excessScore = totalScore - subject.totalScore;
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let closestIndex = -1;
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let closestDiff = Infinity;
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for (let i = 0; i < questions.length; i++) {
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const diff = Math.abs(questions[i].score - excessScore);
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if (diff < closestDiff) {
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closestDiff = diff;
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closestIndex = i;
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}
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}
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if (closestIndex === -1) break;
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// 移除该题目
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totalScore -= questions[closestIndex].score;
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questions.splice(closestIndex, 1);
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}
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const result = await ExamSubjectModel.generateQuizQuestions(subject);
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res.json({
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success: true,
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data: {
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questions,
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totalScore,
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timeLimit: subject.timeLimitMinutes
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questions: result.questions,
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totalScore: result.totalScore,
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timeLimit: result.timeLimitMinutes
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}
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});
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} catch (error: any) {
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