dianshang-qianduan/src/views/exam/take.vue

<template>
  <main class="take-page" v-loading="loading">
    <header class="take-head"><div><h1>{{ paper.name }}</h1><p>考试结束时间 {{ formatTime(paper.endTime) }}</p></div><div class="timer" :class="{ urgent: remaining < 300 }"><el-icon><Timer /></el-icon><span>剩余时间</span><strong>{{ timerText }}</strong></div><el-button type="danger" plain @click="confirmSubmit">交卷</el-button></header>
    <div class="exam-body">
      <aside class="answer-sheet"><h2>答题卡</h2><div v-for="group in grouped" :key="group.type" class="sheet-group"><h3>{{ typeName[group.type] }}</h3><div><button v-for="question in group.items" :key="question.id" :class="{current:current?.id===question.id,answered:isAnswered(question)}" @click="select(question.id)">{{ question.order }}</button></div></div><footer><span><i class="answered-dot" />已答</span><span><i />未答</span></footer></aside>
      <section v-if="current" class="question-panel">
        <header><span>{{ typeName[current.type] }}</span><b>{{ current.score }} 分</b></header><h2>{{ current.order }}. {{ current.stem }}</h2>
        <a v-if="current.attachmentUrl" :href="current.attachmentUrl" target="_blank" class="material"><el-icon><Download /></el-icon>下载题目资料 {{ current.attachmentName }}</a>
        <el-radio-group v-if="current.type==='SINGLE'" v-model="answers[current.id]" class="choice-list" @change="persist(current)"><el-radio v-for="option in current.options" :key="option.label" :label="option.label"><b>{{ option.label }}</b>{{ option.content }}</el-radio></el-radio-group>
        <el-checkbox-group v-else-if="current.type==='MULTIPLE'" v-model="answers[current.id]" class="choice-list" @change="persist(current)"><el-checkbox v-for="option in current.options" :key="option.label" :label="option.label"><b>{{ option.label }}</b>{{ option.content }}</el-checkbox></el-checkbox-group>
        <el-radio-group v-else-if="current.type==='TRUE_FALSE'" v-model="answers[current.id]" class="choice-list judgement" @change="persist(current)"><el-radio :label="true"><b>✓</b>正确</el-radio><el-radio :label="false"><b>×</b>错误</el-radio></el-radio-group>
        <template v-else><el-input v-model="answers[current.id]" type="textarea" :rows="10" placeholder="请输入答案" @blur="persist(current)" /><div class="file-answer"><el-upload :show-file-list="false" :http-request="uploadAnswer" accept=".pdf,.doc,.docx,.png,.jpg,.jpeg"><el-button :icon="Upload">上传作答文件</el-button></el-upload><span v-if="files[current.id]">{{ files[current.id].name }}</span></div></template>
        <footer class="question-actions"><el-button :icon="ArrowLeft" :disabled="currentIndex===0" @click="move(-1)">上一题</el-button><el-button type="primary" :disabled="currentIndex===paper.questions.length-1" @click="move(1)">下一题<el-icon class="el-icon--right"><ArrowRight /></el-icon></el-button></footer>
      </section>
    </div>
  </main>
</template>
<script setup>
import { computed,onBeforeUnmount,onMounted,reactive,ref } from "vue";import { useRoute,useRouter } from "vue-router";import { ElMessage,ElMessageBox } from "element-plus";import { ArrowLeft,ArrowRight,Download,Timer,Upload } from "@element-plus/icons-vue";import * as examApi from "@/api/exam";
const route=useRoute(),router=useRouter(),examId=route.params.id;const loading=ref(false),paper=ref({questions:[]}),currentId=ref(null),remaining=ref(0);const answers=reactive({}),files=reactive({});let ticker;
const typeName={SINGLE:"单选题",MULTIPLE:"多选题",TRUE_FALSE:"判断题",SHORT_ANSWER:"简答题"};const current=computed(()=>paper.value.questions.find(q=>q.id===currentId.value));const currentIndex=computed(()=>paper.value.questions.findIndex(q=>q.id===currentId.value));const grouped=computed(()=>Object.keys(typeName).map(type=>({type,items:paper.value.questions.filter(q=>q.type===type)})).filter(g=>g.items.length));const timerText=computed(()=>`${String(Math.floor(remaining.value/3600)).padStart(2,"0")}:${String(Math.floor(remaining.value%3600/60)).padStart(2,"0")}:${String(remaining.value%60).padStart(2,"0")}`);
onMounted(load);onBeforeUnmount(()=>clearInterval(ticker));async function load(){loading.value=true;try{const token=deviceToken();paper.value=(await examApi.getActivePaper(examId,token)).data;paper.value.questions.forEach(q=>{answers[q.id]=q.studentAnswer??(q.type==="MULTIPLE"?[]:"");if(q.answerFileUrl)files[q.id]={name:q.answerFileName,url:q.answerFileUrl}});currentId.value=paper.value.questions[0]?.id;remaining.value=Math.max(0,Math.floor((new Date(paper.value.endTime)-Date.now())/1000));ticker=setInterval(()=>{remaining.value=Math.max(0,remaining.value-1);if(remaining.value===0){clearInterval(ticker);autoSubmit()}},1000)}finally{loading.value=false}}
function deviceToken(){return localStorage.getItem(`exam-device-${examId}`)||""}function select(id){currentId.value=id}function move(step){currentId.value=paper.value.questions[currentIndex.value+step]?.id}
function isAnswered(q){const answer=answers[q.id];return(Array.isArray(answer)?answer.length:Boolean(String(answer??"").trim()))||Boolean(files[q.id])}
async function persist(q){await examApi.saveExamAnswer(examId,q.id,{deviceToken:deviceToken(),answer:answers[q.id]})}
async function uploadAnswer({file}){const form=new FormData();form.append("file",file);const data=(await examApi.uploadExamAnswerFile(examId,current.value.id,deviceToken(),form)).data;files[current.value.id]={name:data.name,url:data.url};ElMessage.success("作答文件已上传")}
async function confirmSubmit(){const unanswered=paper.value.questions.filter(q=>!isAnswered(q)).length;await ElMessageBox.confirm(unanswered?`还有 ${unanswered} 道题未作答，确认交卷？`:"确认提交试卷？交卷后需由教师回退才能再次进入。","确认交卷",{type:"warning",confirmButtonText:"确认交卷"});await doSubmit()}
async function doSubmit(){await examApi.submitExam(examId,deviceToken());ElMessage.success("交卷成功");router.replace("/examination/index")}
async function autoSubmit(){try{await doSubmit()}catch{router.replace("/examination/index")}}
function formatTime(v){return v?new Date(v).toLocaleString("zh-CN",{hour12:false}).replaceAll("/","-"):"-"}
</script>
<style scoped lang="scss">
.take-page { min-height: calc(100vh - 84px); background: #f3f6f6; color: #20282d; }
.take-head { height: 78px; background: #fff; border-bottom: 1px solid #dce3e5; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 0 28px;
  h1 { font-size: 20px; margin: 0; } p { margin: 5px 0 0; color: #6b7280; font-size: 13px; } > button { justify-self: end; }
  .timer { display: flex; align-items: center; gap: 8px; color: #526067; strong { font-size: 22px; font-variant-numeric: tabular-nums; color: #165f71; } &.urgent strong { color: #c24138; } }
}
.exam-body { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 22px; padding: 22px; }
.answer-sheet { background: white; border: 1px solid #dce3e5; padding: 18px; align-self: start; position: sticky; top: 16px;
  h2 { font-size: 17px; margin: 0 0 18px; } footer { display: flex; gap: 18px; color: #6b7280; font-size: 12px; border-top: 1px solid #e5e7eb; padding-top: 12px; }
  footer i { display: inline-block; width: 10px; height: 10px; border: 1px solid #cbd5d8; margin-right: 5px; } footer .answered-dot { background: #dcefeb; border-color: #68a99b; }
}
.sheet-group { margin-bottom: 16px; h3 { font-size: 13px; color: #66737a; margin: 0 0 8px; } div { display: grid; grid-template-columns: repeat(5, 1fr); gap: 7px; }
  button { aspect-ratio: 1; border: 1px solid #ccd5d8; background: white; border-radius: 3px; cursor: pointer; &.answered { background: #dcefeb; border-color: #68a99b; color: #185e70; } &.current { outline: 2px solid #e6a23c; outline-offset: 1px; } }
}
.question-panel { background: #fff; border: 1px solid #dce3e5; min-height: 610px; padding: 26px 34px 84px; position: relative;
  > header { display: flex; justify-content: space-between; color: #176b87; border-bottom: 1px solid #edf0f1; padding-bottom: 12px; } > h2 { font-size: 18px; line-height: 1.7; margin: 22px 0; }
  .material { display: inline-flex; align-items: center; gap: 6px; color: #176b87; margin-bottom: 16px; } .choice-list { display: grid; gap: 12px; width: 100%; }
  :deep(.el-radio), :deep(.el-checkbox) { margin: 0; border: 1px solid #dce3e5; border-radius: 4px; padding: 14px 16px; height: auto; white-space: normal; }
  :deep(.is-checked) { background: #eef8f5; border-color: #68a99b; } :deep(.el-radio__label), :deep(.el-checkbox__label) { display: flex; gap: 12px; line-height: 1.5; }
  .judgement { grid-template-columns: 1fr 1fr; } .file-answer { display: flex; align-items: center; gap: 12px; margin-top: 12px; color: #176b87; }
  .question-actions { position: absolute; bottom: 24px; left: 34px; right: 34px; display: flex; justify-content: space-between; }
}
@media (max-width: 760px) { .take-head { grid-template-columns: 1fr auto; padding: 10px 14px; height: auto; .timer { grid-row: 2; grid-column: 1 / 3; margin-top: 8px; } > button { grid-column: 2; grid-row: 1; } } .exam-body { grid-template-columns: 1fr; padding: 10px; } .answer-sheet { position: static; } .question-panel { padding: 20px 18px 78px; .question-actions { left: 18px; right: 18px; } } }
</style>