nxxy335
0fd880624f
- 修复再次提交不置顶（排序键改用 last_submit_ts） - 后端结果缓存 + 并发锁（DataCache / ny_build_data / Roster 指纹失效） - 导出 xlsx 多表：按最新成绩 / 按班级分表 / 可选列 - 名单管理：新增改弹窗、删除多选+二次确认、登陆账号列 - 安全：CSRF token + 登录失败限流（5次锁10分钟） - 未匹配答卷一键加入名单（unmatched_map） - 缺考名单增强：复制学号/姓名、按班统计、打印 - 成绩快照 + 跨卷趋势（Snapshot） - 异常检测线索（短时长高分/高频重考/雷同成绩） - 前端性能：虚拟滚动、搜索防抖、后台暂停、失败退避 - 测试沉淀：test-new-features.php + run-all.sh
602 lines
24 KiB
PHP
602 lines
24 KiB
PHP
<?php
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/**
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* 数据组装：卷王答卷 -> 学号 / 姓名 / 成绩 / 提交时间 / 考试时长
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*/
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declare(strict_types=1);
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class DataService
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{
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/** 容器型题目（分页、题组、说明）不参与取值 */
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private const CONTAINER_TYPES = [
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'pagination', 'page', 'group', 'survey', 'divider', 'tree',
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];
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/** 题目标题可能是富文本，去掉标签便于展示与匹配 */
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private static function cleanTitle(string $t): string
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{
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$t = strip_tags($t);
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$t = html_entity_decode($t, ENT_QUOTES | ENT_HTML5, 'UTF-8');
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return trim(preg_replace('/\s+/u', ' ', $t) ?? '');
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}
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/**
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* 展平题目树
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* @return array<int,array{id:string,title:string,type:string,path:string}>
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*/
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public static function flattenQuestions(mixed $node, string $path = ''): array
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{
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$out = [];
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if (!is_array($node)) {
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return $out;
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}
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// children 在根或子节点
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$self = $node;
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$children = (isset($node['children']) && is_array($node['children'])) ? $node['children'] : null;
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$id = isset($self['id']) ? (string)$self['id'] : '';
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$title = isset($self['title']) ? self::cleanTitle((string)$self['title']) : '';
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$type = isset($self['type']) ? (string)$self['type'] : '';
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$isRoot = ($path === '');
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if (!$isRoot && $id !== '' && !in_array(strtolower($type), self::CONTAINER_TYPES, true)) {
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$out[] = [
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'id' => $id,
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'title' => $title !== '' ? $title : $id,
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'type' => $type,
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'path' => $path,
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];
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}
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if ($children !== null) {
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foreach ($children as $idx => $child) {
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$subPath = $path === '' ? (string)($idx + 1) : $path . '-' . ($idx + 1);
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foreach (self::flattenQuestions($child, $subPath) as $q) {
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$out[] = $q;
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}
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}
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}
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return $out;
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}
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/** 根据关键词猜测"姓名"题 */
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public static function guessNameQuestion(array $questions, string $keywords): array
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{
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$kws = array_values(array_filter(array_map('trim', preg_split('/[,，]/u', $keywords) ?: [])));
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$candidates = [];
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foreach ($questions as $q) {
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$t = (string)$q['title'];
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foreach ($kws as $kw) {
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if ($kw !== '' && mb_stripos($t, $kw) !== false) {
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$candidates[] = $q;
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break;
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}
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}
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}
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return $candidates;
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}
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/**
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* 组装结果
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*/
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public static function build(array $cfg, string $projectId, string $nameQid = ''): array
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{
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$client = new SurveyKingClient($cfg);
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$students = Roster::all();
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// 姓名 -> 学号 / 班级（规范化）
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$studentInfo = [];
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foreach ($students as $s) {
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$k = ny_norm_name((string)$s['name']);
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if ($k !== '') {
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$studentInfo[$k] = [
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'sid' => (string)$s['sid'],
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'cls' => (string)($s['cls'] ?? ''),
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'grp' => (string)($s['grp'] ?? ''),
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];
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}
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}
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$project = $client->getProject($projectId);
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$survey = $project['survey'] ?? null;
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if (is_string($survey) && $survey !== '') {
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$decoded = json_decode($survey, true);
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if (is_array($decoded)) {
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$survey = $decoded;
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}
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}
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$questions = self::flattenQuestions($survey);
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$keywords = (string)($cfg['name_keywords'] ?? '姓名');
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$nameCandidates = self::guessNameQuestion($questions, $keywords);
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$autoQid = $nameCandidates[0]['id'] ?? '';
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// 指定优先
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$pickedQid = $nameQid !== '' ? $nameQid : $autoQid;
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$candidateIds = [];
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if ($pickedQid !== '') {
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$candidateIds[] = $pickedQid;
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}
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foreach ($nameCandidates as $q) {
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if (!in_array($q['id'], $candidateIds, true)) {
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$candidateIds[] = $q['id'];
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}
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}
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$answers = $client->listAnswers($projectId);
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$includeTemp = !empty($cfg['include_temp_save']);
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$dedupe = !empty($cfg['dedupe']);
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$rawRows = []; // 已匹配学号的原始 row（每条 = 一次提交）
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$unmatched = [];
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foreach ($answers as $a) {
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$tempSave = isset($a['tempSave']) ? (int)$a['tempSave'] : 1;
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if (!$includeTemp && $tempSave === 0) {
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continue; // 跳过暂存
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}
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$answerMap = isset($a['answer']) && is_array($a['answer']) ? $a['answer'] : [];
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// 姓名：优先关键词命中的题目 -> 全量扫描能匹配名单的答案 -> 登录用户名
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$name = '';
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foreach ($candidateIds as $qid) {
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if (isset($answerMap[$qid])) {
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$v = ny_flatten_value($answerMap[$qid]);
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if ($v !== '') {
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$name = $v;
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break;
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}
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}
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}
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if ($name === '') {
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foreach ($questions as $q) {
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$qid = (string)$q['id'];
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if (!array_key_exists($qid, $answerMap)) {
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continue;
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}
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$v = ny_flatten_value($answerMap[$qid]);
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if ($v !== '' && isset($nameMap[ny_norm_name($v)])) {
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$name = $v;
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break;
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}
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}
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}
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if ($name === '' && $questions === []) {
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foreach ($answerMap as $v) {
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$s = ny_flatten_value($v);
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if ($s !== '' && isset($nameMap[ny_norm_name($s)])) {
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$name = $s;
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break;
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}
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}
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}
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if ($name === '') {
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$name = ny_str($a['createByName'] ?? '');
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}
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if ($name === '') {
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$name = '（未填写姓名）';
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}
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// 成绩
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$score = null;
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if (isset($a['examScore']) && is_numeric($a['examScore'])) {
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$score = (float)$a['examScore'];
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}
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// 提交时间
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$ts = ny_to_timestamp($a['createAt'] ?? null);
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if ($ts === 0) {
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$ts = ny_to_timestamp($a['updateAt'] ?? null);
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}
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// 考试时长
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$ai = $a['metaInfo']['answerInfo'] ?? [];
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$start = is_array($ai) ? (int)($ai['startTime'] ?? 0) : 0;
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$end = is_array($ai) ? (int)($ai['endTime'] ?? 0) : 0;
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$dur = null;
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if ($start > 0 && $end > $start) {
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$dur = (int)round(($end - $start) / 1000);
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}
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$key = ny_norm_name($name);
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$info = $studentInfo[$key] ?? null;
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$sid = $info['sid'] ?? '';
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$cls = $info['cls'] ?? '';
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$grp = $info['grp'] ?? '';
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$row = [
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'sid' => $sid,
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'name' => $name,
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'cls' => $cls,
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'grp' => $grp,
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'score' => $score,
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'submit_ts' => $ts,
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'submit_at' => $ts > 0 ? date('Y-m-d H:i:s', $ts) : '-',
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'duration' => $dur,
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'duration_txt'=> ny_format_duration($dur),
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'answer_id' => ny_str($a['id'] ?? ''),
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'matched' => $sid !== '',
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'temp_save' => $tempSave === 0,
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];
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if ($sid === '') {
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$unmatched[] = $row;
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continue;
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}
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$rawRows[] = $row;
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}
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// 按学号聚合：dedupe=true 仅保留最新一份；false 则每名一行（代表=最高分）
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// 并附带 attempts(次数) / attempts_list(每次提交明细)，供看板展示"多次刷题"
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$agg = self::aggregateByStudent($rawRows, $dedupe);
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$rows = $agg['rows'];
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$attemptsTotal = $agg['attempts_total'];
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// 成绩明细默认按提交时间降序（最新在前），学号作为次级排序
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// 重要：排序键必须用「最近一次提交时间 last_submit_ts」，而不是代表行的 submit_ts。
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// 否则当 dedupe=false（代表成绩=最高分）时，学生重考且分数更低，代表行仍是最高分那次，
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// submit_ts 不变 → 该行会停在原来的位置只高亮，不会置顶，教师登记时看不到新提交。
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$sortTs = static fn(array $r): int => (int)($r['last_submit_ts'] ?? 0) ?: (int)($r['submit_ts'] ?? 0);
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usort($rows, static function (array $x, array $y) use ($sortTs): int {
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$d = $sortTs($y) <=> $sortTs($x);
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if ($d !== 0) {
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return $d;
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}
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$a = (string)$x['sid'];
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$b = (string)$y['sid'];
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if (is_numeric($a) && is_numeric($b)) {
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return $a <=> $b;
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}
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return strnatcmp($a, $b);
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});
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// 缺考名单
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$submittedSids = [];
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foreach ($rows as $r) {
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$submittedSids[(string)$r['sid']] = true;
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}
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$absent = [];
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foreach ($students as $s) {
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if (!isset($submittedSids[(string)$s['sid']])) {
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$absent[] = [
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'sid' => (string)$s['sid'],
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'name' => (string)$s['name'],
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'cls' => (string)($s['cls'] ?? ''),
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'grp' => (string)($s['grp'] ?? ''),
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];
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}
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}
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usort($absent, static function (array $x, array $y): int {
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$a = (string)$x['sid'];
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$b = (string)$y['sid'];
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if (is_numeric($a) && is_numeric($b)) {
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return $a <=> $b;
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}
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return strnatcmp($a, $b);
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});
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// 统计
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$scores = array_values(array_filter(array_map(static fn($r) => $r['score'], $rows), static fn($v) => $v !== null));
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$durs = array_values(array_filter(array_map(static fn($r) => $r['duration'], $rows), static fn($v) => $v !== null));
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$stats = [
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'roster_total' => count($students),
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'submitted' => count($rows),
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'absent' => count($absent),
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'unmatched' => count($unmatched),
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'submit_rate' => count($students) > 0 ? round(count($rows) / count($students) * 100, 1) : 0,
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'avg_score' => $scores !== [] ? round(array_sum($scores) / count($scores), 2) : null,
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'max_score' => $scores !== [] ? max($scores) : null,
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'min_score' => $scores !== [] ? min($scores) : null,
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'avg_duration' => $durs !== [] ? (int)round(array_sum($durs) / count($durs)) : null,
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'answer_total' => count($answers),
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'attempts_total'=> $attemptsTotal,
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];
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// 异常检测（防作弊线索，仅供教师人工判断，不做自动判定）
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$anomalies = self::detectAnomalies($rows, $stats);
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return [
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'project' => [
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'id' => ny_str($project['id'] ?? $projectId),
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'name' => ny_str($project['name'] ?? ''),
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'mode' => ny_str($project['mode'] ?? ''),
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],
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'questions' => $questions,
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'name_qid' => $pickedQid,
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'name_candidates' => array_map(static fn($q) => ['id' => $q['id'], 'title' => $q['title']], $nameCandidates),
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'rows' => $rows,
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'absent' => $absent,
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'unmatched' => $unmatched,
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'stats' => $stats,
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'anomalies' => $anomalies,
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'roster' => $students,
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'roster_count' => count($students),
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'updated_at' => date('Y-m-d H:i:s'),
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];
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}
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/**
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* 异常检测（防作弊线索）：基于聚合后的学生行，输出三类线索供教师人工复核。
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* 1) 短时长高得分：用时远低于平均（<平均 40% 且 <180s）却接近满分；
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* 2) 高频重考：考试次数明显多于多数人（>1 且 >= 平均次数+3）；
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* 3) 雷同成绩：多人分数完全相同（疑似互抄，需满足该分数下人数 >=3）。
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*
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* 返回值：['fast_high'=>[], 'frequent'=>[], 'identical'=>[['score'=>x,'count'=>n,'names'=>[...]]]]
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*/
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public static function detectAnomalies(array $rows, array $stats): array
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{
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$avgDur = (int)($stats['avg_duration'] ?? 0);
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$fullHint = max(1, (float)($stats['max_score'] ?? 100));
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$fastHigh = [];
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$frequent = [];
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$attemptsAll = [];
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foreach ($rows as $r) {
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$dur = $r['duration'] ?? null;
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$score = $r['score'] ?? null;
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$attempts = (int)($r['attempts'] ?? 1);
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$attemptsAll[] = $attempts;
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// 短时长高得分：有时长记录、明显快于平均、分数 >= 满分 85%
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if ($dur !== null && $avgDur > 0 && $dur < max(60, (int)($avgDur * 0.4))
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&& $score !== null && $score >= $fullHint * 0.85) {
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$fastHigh[] = [
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'sid' => (string)($r['sid'] ?? ''),
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'name' => (string)($r['name'] ?? ''),
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'cls' => (string)($r['cls'] ?? ''),
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'score' => $score,
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'duration' => $dur,
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'duration_txt' => (string)($r['duration_txt'] ?? ''),
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];
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}
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// 高频重考：考试次数明显偏多
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if ($attempts > 1) {
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$frequent[] = [
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'sid' => (string)($r['sid'] ?? ''),
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'name' => (string)($r['name'] ?? ''),
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'cls' => (string)($r['cls'] ?? ''),
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'attempts' => $attempts,
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'best_score' => $r['best_score'] ?? null,
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];
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}
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}
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// 高频重考阈值：平均次数 + 3（且至少 4 次才够"高频"）
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$avgAttempts = $attemptsAll !== [] ? array_sum($attemptsAll) / count($attemptsAll) : 0;
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$freqThreshold = max(4, (int)ceil($avgAttempts + 3));
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$frequent = array_values(array_filter($frequent, static fn($f) => $f['attempts'] >= $freqThreshold));
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usort($frequent, static fn($a, $b) => $b['attempts'] <=> $a['attempts']);
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// 雷同成绩：按分数分组，出现 >=3 人同分（且分数不为 null）视为疑似
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$scoreGroups = [];
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foreach ($rows as $r) {
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$score = $r['score'] ?? null;
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if ($score === null) {
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continue;
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}
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$key = (string)$score;
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$scoreGroups[$key][] = [
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'sid' => (string)($r['sid'] ?? ''),
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'name' => (string)($r['name'] ?? ''),
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'cls' => (string)($r['cls'] ?? ''),
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];
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}
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$identical = [];
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foreach ($scoreGroups as $score => $members) {
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if (count($members) >= 3) {
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$identical[] = ['score' => (float)$score, 'count' => count($members), 'members' => $members];
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}
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}
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usort($identical, static fn($a, $b) => $b['count'] <=> $a['count']);
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return [
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'fast_high' => $fastHigh,
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'frequent' => $frequent,
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'identical' => $identical,
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];
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}
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/**
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* 把聚合后的学生行展开为"每次考试一行"，用于导出全部考试记录 / 明细内全部展示。
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* 每行携带该次考试的成绩、提交时间、时长，以及该学生的总考试次数 attempts 与第几次 idx。
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*
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* @param array $rows 聚合后的行（每行含 attempts_list）
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* @param bool $desc 是否按提交时间降序（新 -> 旧）
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* @return array
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*/
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public static function expandAttempts(array $rows, bool $desc = true): array
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{
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$out = [];
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foreach ($rows as $r) {
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$list = (array)($r['attempts_list'] ?? []);
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if ($list === []) {
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// 没有明细时退回代表行本身
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$one = $r;
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$one['idx'] = 1;
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$one['is_best'] = true;
|
||
$out[] = $one;
|
||
continue;
|
||
}
|
||
foreach ($list as $a) {
|
||
$out[] = [
|
||
'sid' => (string)($r['sid'] ?? ''),
|
||
'name' => (string)($r['name'] ?? ''),
|
||
'cls' => (string)($r['cls'] ?? ''),
|
||
'grp' => (string)($r['grp'] ?? ''),
|
||
'score' => $a['score'] ?? null,
|
||
'submit_ts' => (int)($a['submit_ts'] ?? 0),
|
||
'submit_at' => (string)($a['submit_at'] ?? '-'),
|
||
'duration' => $a['duration'] ?? null,
|
||
'duration_txt' => (string)($a['duration_txt'] ?? '-'),
|
||
'answer_id' => (string)($a['answer_id'] ?? ''),
|
||
'temp_save' => !empty($a['temp_save']),
|
||
'attempts' => (int)($r['attempts'] ?? 1),
|
||
'best_score' => $r['best_score'] ?? null,
|
||
'idx' => (int)($a['idx'] ?? 1),
|
||
'is_best' => !empty($a['is_best']),
|
||
'last_submit_ts' => (int)($r['last_submit_ts'] ?? 0),
|
||
'last_submit_at' => (string)($r['last_submit_at'] ?? '-'),
|
||
];
|
||
}
|
||
}
|
||
usort($out, static function (array $x, array $y) use ($desc): int {
|
||
// 注意：x<=>y 是升序，降序要用 y<=>x
|
||
$d = ((int)($y['submit_ts'] ?? 0)) <=> ((int)($x['submit_ts'] ?? 0));
|
||
if (!$desc) {
|
||
$d = -$d;
|
||
}
|
||
if ($d !== 0) {
|
||
return $d;
|
||
}
|
||
// 同时间：学号升序
|
||
$a = (string)$x['sid'];
|
||
$b = (string)$y['sid'];
|
||
if (is_numeric($a) && is_numeric($b)) {
|
||
return $a <=> $b;
|
||
}
|
||
return strnatcmp($a, $b);
|
||
});
|
||
return $out;
|
||
}
|
||
|
||
/**
|
||
* 导出/展示用的排序：
|
||
* - time（默认）：按提交时间降序，同时间按学号升序
|
||
* - sid：按学号升序，同一学号内多次考试再按提交时间降序
|
||
*
|
||
* @param array $rows expandAttempts 展开后的行
|
||
* @param string $mode 'time' | 'sid'
|
||
*/
|
||
public static function sortForExport(array $rows, string $mode = 'time'): array
|
||
{
|
||
$out = $rows;
|
||
if ($mode === 'sid') {
|
||
usort($out, static function ($x, $y): int {
|
||
$a = (string)($x['sid'] ?? '');
|
||
$b = (string)($y['sid'] ?? '');
|
||
if (is_numeric($a) && is_numeric($b)) {
|
||
$d = $a <=> $b;
|
||
} else {
|
||
$d = strnatcmp($a, $b);
|
||
}
|
||
if ($d !== 0) {
|
||
return $d;
|
||
}
|
||
return ((int)($y['submit_ts'] ?? 0)) <=> ((int)($x['submit_ts'] ?? 0));
|
||
});
|
||
return $out;
|
||
}
|
||
usort($out, static function ($x, $y): int {
|
||
$d = ((int)($y['submit_ts'] ?? 0)) <=> ((int)($x['submit_ts'] ?? 0));
|
||
if ($d !== 0) {
|
||
return $d;
|
||
}
|
||
$a = (string)($x['sid'] ?? '');
|
||
$b = (string)($y['sid'] ?? '');
|
||
if (is_numeric($a) && is_numeric($b)) {
|
||
return $a <=> $b;
|
||
}
|
||
return strnatcmp($a, $b);
|
||
});
|
||
return $out;
|
||
}
|
||
|
||
/**
|
||
* 按学号聚合一次提交的答卷记录，解决"同人多次刷卷"在看板中被当成多个人的问题。
|
||
*
|
||
* 关键语义（修复"考试次数=1 / 历史只有一条"的 bug）：
|
||
* - attempts(真实考试次数) 与 attempts_list(每次提交明细) **始终等于全部提交**，与 dedupe 无关；
|
||
* 这样"考试次数列"与"点击查看历史"永远展示完整数据。
|
||
* - dedupe 仅决定主明细表"代表成绩"那一行取哪次考试的成绩：
|
||
* dedupe=true → 取提交时间最新的一份（默认，看板更干净）
|
||
* dedupe=false → 取最高分（同分时取最早达到该分数的那次）
|
||
*
|
||
* @param array $rows 已匹配学号的原始 row（每条 = 一次提交）
|
||
* @return array{rows:array, attempts_total:int}
|
||
*/
|
||
public static function aggregateByStudent(array $rows, bool $dedupe): array
|
||
{
|
||
$bySid = [];
|
||
foreach ($rows as $r) {
|
||
$bySid[(string)($r['sid'] ?? '')][] = $r;
|
||
}
|
||
$agg = [];
|
||
$attemptsTotal = 0;
|
||
foreach ($bySid as $sid => $list) {
|
||
$attemptsTotal += count($list);
|
||
// 升序：旧 -> 新
|
||
$sorted = $list;
|
||
usort($sorted, static function (array $x, array $y): int {
|
||
return ($x['submit_ts'] ?? 0) <=> ($y['submit_ts'] ?? 0);
|
||
});
|
||
// 最佳成绩（用于标记每次考试是否为最高分）
|
||
$maxScore = null;
|
||
foreach ($sorted as $a) {
|
||
if ($a['score'] !== null && ($maxScore === null || $a['score'] > $maxScore)) {
|
||
$maxScore = $a['score'];
|
||
}
|
||
}
|
||
// 最近一次提交（升序排序后的最后一份）
|
||
$lastSubmitTs = (int)($sorted[count($sorted) - 1]['submit_ts'] ?? 0);
|
||
// 标记是否已给"最佳"打过标（同分时只标最早达到该分数的那次）
|
||
$bestMarked = false;
|
||
$idx = 0;
|
||
$attemptsList = array_map(static function (array $a) use (&$idx, $maxScore, &$bestMarked): array {
|
||
$idx++;
|
||
$isBest = (!$bestMarked && $a['score'] !== null && $maxScore !== null && (float)$a['score'] === (float)$maxScore);
|
||
if ($isBest) {
|
||
$bestMarked = true;
|
||
}
|
||
return [
|
||
'idx' => $idx,
|
||
'is_best' => $isBest,
|
||
'submit_at' => $a['submit_at'],
|
||
'submit_ts' => $a['submit_ts'],
|
||
'score' => $a['score'],
|
||
'duration' => $a['duration'],
|
||
'duration_txt' => $a['duration_txt'],
|
||
'answer_id' => $a['answer_id'],
|
||
'temp_save' => $a['temp_save'],
|
||
];
|
||
}, $sorted);
|
||
|
||
// 代表成绩选择（仅影响主明细表那一行的成绩，不影响考试次数 / 历史明细）
|
||
if ($dedupe) {
|
||
// 代表成绩 = 提交时间最新的一份（默认，看板更干净）
|
||
$row = $sorted[count($sorted) - 1];
|
||
} else {
|
||
// 代表成绩 = 最高分（null 成绩不参与比较，全部为 null 时回退为最近一份）
|
||
$best = null;
|
||
$bestScore = null;
|
||
foreach ($sorted as $a) {
|
||
if ($a['score'] !== null && ($bestScore === null || $a['score'] > $bestScore)) {
|
||
$bestScore = $a['score'];
|
||
$best = $a;
|
||
}
|
||
}
|
||
if ($best === null) {
|
||
$best = $sorted[count($sorted) - 1];
|
||
}
|
||
$row = $best;
|
||
}
|
||
|
||
// 关键修复：考试次数与历史明细始终使用真实全部提交，与去重无关
|
||
// （之前 dedupe=true 时把 attempts 写成 1、attempts_list 只留最新一份，导致"考试次数"和
|
||
// 历史弹窗都只显示 1 条，多次刷题的数据被吞掉）
|
||
$row['attempts'] = count($list);
|
||
$row['best_score'] = $maxScore; // 真实最高分（跨全部尝试），用于历史弹窗标题展示
|
||
$row['attempts_list'] = $attemptsList;
|
||
// 最近一次提交时间（与"代表成绩"可能是不同的一次考试）：
|
||
// 用于"按提交时间排序"和"新提交高亮"，保证重考（哪怕分数更低）也能被发现
|
||
$row['last_submit_ts'] = $lastSubmitTs;
|
||
$row['last_submit_at'] = $lastSubmitTs > 0 ? date('Y-m-d H:i:s', $lastSubmitTs) : '-';
|
||
$agg[] = $row;
|
||
}
|
||
return ['rows' => $agg, 'attempts_total' => $attemptsTotal];
|
||
}
|
||
}
|