424 lines
15 KiB
PHP
424 lines
15 KiB
PHP
<?php
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namespace app\common;
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use think\Db;
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use think\Env;
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use think\Queue;
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use think\Exception;
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/**
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* 查重业务层：把 TurnitinService 的低层调用包装成"按 article 查重"的高层流程，
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* 并维护 t_plagiarism_check 状态机。
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*
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* 状态流：
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* submit() → state=1（上传中），入队 PlagiarismRun
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* PlagiarismRun.fire → 上传 + 触发 similarity → state=2（比对中），入队 PlagiarismPoll
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* PlagiarismPoll.fire → 轮询 status，完成后下载 PDF → state=3（完成）
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* 任意环节抛异常 → state=4（失败），写 error_msg
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*/
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class PlagiarismService
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{
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/**
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* 报告 PDF 本地保存目录（相对于项目根，永久保留）
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*/
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const REPORT_DIR = 'public/plagiarism';
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/**
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* 轮询间隔（秒）。Turnitin 一般 1-5 分钟出结果，30 秒一次比较合适
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*/
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const POLL_INTERVAL = 30;
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/**
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* 最长轮询次数（30s × 60 = 30 分钟）
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*/
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const MAX_POLL_ATTEMPTS = 60;
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// ---------- 顶层入口 ----------
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/**
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* 提交查重（入队，立即返回 check_id）
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*
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* @param int $articleId 投稿 ID
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* @param string $filePath 本地可读的 PDF/DOCX 绝对路径
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* @param int $triggeredBy 触发人 user_id（手工触发时编辑后台的 user_id）
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* @param string $source 'manual' / 'auto_xxx'
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* @return int check_id
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*/
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public function submit($articleId, $filePath, $triggeredBy = 0, $source = 'manual')
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{
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if (!is_file($filePath) || !is_readable($filePath)) {
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throw new Exception("File not readable: {$filePath}");
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}
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$journalId = (int) Db::name('article')
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->where('article_id', $articleId)
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->value('journal_id');
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$now = time();
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$checkId = Db::name('plagiarism_check')->insertGetId([
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'article_id' => $articleId,
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'journal_id' => $journalId,
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'triggered_by' => $triggeredBy,
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'trigger_source' => $source,
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'state' => 1, // 上传中
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'source_file_name' => basename($filePath),
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'source_file_size' => filesize($filePath) ?: 0,
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'ctime' => $now,
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'utime' => $now,
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]);
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// 入队执行：上传 + 触发 similarity
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Queue::push(
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'app\\api\\job\\PlagiarismRun',
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['check_id' => $checkId, 'file_path' => $filePath],
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'plagiarism'
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);
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return (int)$checkId;
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}
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/**
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* Job 调用：上传文件到 Turnitin 并触发 similarity，然后入队 PlagiarismPoll
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*/
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public function runUploadAndTrigger($checkId, $filePath)
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{
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$check = $this->mustGetCheck($checkId);
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try {
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$tii = new TurnitinService();
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// 1. 创建 submission
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$articleTitle = (string) Db::name('article')
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->where('article_id', $check['article_id'])
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->value('title');
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if ($articleTitle === '') {
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$articleTitle = 'Article #' . $check['article_id'];
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}
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$createResp = $tii->createSubmission([
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'title' => mb_substr($articleTitle, 0, 250),
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'owner' => 'editor_' . $check['triggered_by'],
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'submitter' => 'editor_' . $check['triggered_by'],
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'metadata' => [
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'article_id' => (string)$check['article_id'],
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'check_id' => (string)$check['check_id'],
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],
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]);
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$submissionId = isset($createResp['id']) ? $createResp['id'] : '';
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if ($submissionId === '') {
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throw new Exception('Turnitin createSubmission returned empty id: ' . json_encode($createResp));
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}
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$this->updateCheck($checkId, [
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'tii_submission_id' => $submissionId,
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'raw_response' => json_encode($createResp, JSON_UNESCAPED_UNICODE),
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]);
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// 2. 上传文件
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$tii->uploadFile($submissionId, $filePath, basename($filePath));
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// 3. 触发 similarity
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$simResp = $tii->triggerSimilarity($submissionId);
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$this->updateCheck($checkId, [
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'state' => 2, // 比对中
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'tii_report_status' => 'PROCESSING',
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'raw_response' => json_encode($simResp, JSON_UNESCAPED_UNICODE),
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]);
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// 4. 排队首次轮询（晚一点开始，让 Turnitin 先处理）
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Queue::later(
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self::POLL_INTERVAL,
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'app\\api\\job\\PlagiarismPoll',
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['check_id' => $checkId, 'attempt' => 1],
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'plagiarism'
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);
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} catch (\Throwable $e) {
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$this->markFailed($checkId, '[upload] ' . $e->getMessage());
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throw $e;
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}
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}
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/**
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* Job 调用：轮询 similarity 状态，完成后下载 PDF。未完成则重新入队。
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*/
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public function runPollStatus($checkId, $attempt = 1)
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{
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$check = $this->mustGetCheck($checkId);
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if (empty($check['tii_submission_id'])) {
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$this->markFailed($checkId, '[poll] tii_submission_id empty');
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return;
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}
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try {
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$tii = new TurnitinService();
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$statusResp = $tii->getSimilarityStatus($check['tii_submission_id']);
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$status = isset($statusResp['status']) ? strtoupper($statusResp['status']) : '';
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$this->updateCheck($checkId, [
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'tii_report_status' => $status,
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'attempts' => $attempt,
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'raw_response' => json_encode($statusResp, JSON_UNESCAPED_UNICODE),
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]);
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if ($status === 'COMPLETE') {
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$score = isset($statusResp['overall_match_percentage'])
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? floatval($statusResp['overall_match_percentage']) : 0;
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// 下载 PDF + 取在线查看 URL
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$localPdf = $this->downloadAndStorePdf($tii, $check['tii_submission_id'], $checkId);
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$viewerInfo = $this->refreshViewerUrl($tii, $check['tii_submission_id']);
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$this->updateCheck($checkId, [
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'state' => 3,
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'similarity_score' => $score,
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'pdf_local_path' => $localPdf,
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'view_only_url' => $viewerInfo['url'],
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'view_only_url_expire' => $viewerInfo['expire'],
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'error_msg' => '',
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]);
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return;
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}
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if ($status === 'ERROR') {
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$errMsg = isset($statusResp['error_code']) ? (string)$statusResp['error_code'] : 'Turnitin reported ERROR';
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$this->markFailed($checkId, '[poll] ' . $errMsg);
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return;
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}
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// PROCESSING 或其它中间态：继续轮询
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if ($attempt >= self::MAX_POLL_ATTEMPTS) {
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$this->markFailed($checkId, '[poll] timeout after ' . $attempt . ' attempts');
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return;
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}
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Queue::later(
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self::POLL_INTERVAL,
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'app\\api\\job\\PlagiarismPoll',
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['check_id' => $checkId, 'attempt' => $attempt + 1],
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'plagiarism'
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);
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} catch (\Throwable $e) {
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// 网络抖动不要直接 fail，给一定容错次数
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if ($attempt < self::MAX_POLL_ATTEMPTS) {
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Queue::later(
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self::POLL_INTERVAL,
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'app\\api\\job\\PlagiarismPoll',
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['check_id' => $checkId, 'attempt' => $attempt + 1],
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'plagiarism'
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);
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$this->updateCheck($checkId, [
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'attempts' => $attempt,
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'error_msg' => '[poll] transient: ' . $e->getMessage(),
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]);
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return;
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}
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$this->markFailed($checkId, '[poll] exhausted: ' . $e->getMessage());
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throw $e;
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}
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}
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/**
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* 重新生成在线查看 URL（已有的过期了用）
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*
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* @return array{url:string, expire:int, local_pdf:string}
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*/
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public function refreshViewerUrlFor($checkId)
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{
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$check = $this->mustGetCheck($checkId);
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if (empty($check['tii_submission_id'])) {
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throw new Exception('check has no tii_submission_id');
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}
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$tii = new TurnitinService();
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$info = $this->refreshViewerUrl($tii, $check['tii_submission_id']);
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$this->updateCheck($checkId, [
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'view_only_url' => $info['url'],
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'view_only_url_expire' => $info['expire'],
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]);
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return [
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'url' => $info['url'],
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'expire' => $info['expire'],
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'local_pdf' => $check['pdf_local_path'],
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];
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}
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// ---------- 内部 ----------
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private function refreshViewerUrl($tii, $submissionId)
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{
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$resp = $tii->getViewerUrl($submissionId);
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$url = '';
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if (isset($resp['viewer_url'])) {
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$url = (string)$resp['viewer_url'];
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} elseif (isset($resp['url'])) {
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$url = (string)$resp['url'];
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}
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// 默认 2 小时过期，保守起见
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return ['url' => $url, 'expire' => time() + 7200];
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}
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/**
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* 触发生成 + 轮询 + 下载 PDF 到本地，返回相对路径
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*/
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private function downloadAndStorePdf($tii, $submissionId, $checkId)
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{
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// 1. 请求生成
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$req = $tii->requestPdfReport($submissionId);
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$pdfId = isset($req['id']) ? $req['id'] : '';
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if ($pdfId === '') {
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throw new Exception('requestPdfReport empty id: ' . json_encode($req));
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}
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// 2. 内联轮询 PDF 状态（最多 3 分钟，每 6 秒一次）
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$maxLoops = 30;
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for ($i = 0; $i < $maxLoops; $i++) {
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$st = $tii->getPdfReportStatus($submissionId, $pdfId);
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$stCode = isset($st['status']) ? strtoupper($st['status']) : '';
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if ($stCode === 'SUCCESS') {
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break;
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}
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if ($stCode === 'FAILED') {
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throw new Exception('PDF report generation failed: ' . json_encode($st));
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}
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sleep(6);
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}
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// 3. 下载
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$binary = $tii->downloadPdfReport($submissionId, $pdfId);
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if (!is_string($binary) || strlen($binary) < 100) {
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throw new Exception('downloaded pdf is empty/too small');
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}
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// 4. 落盘
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$rootDir = ROOT_PATH ?: dirname(dirname(__DIR__));
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$absDir = rtrim($rootDir, '/\\') . DIRECTORY_SEPARATOR . self::REPORT_DIR;
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if (!is_dir($absDir)) {
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@mkdir($absDir, 0755, true);
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}
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$filename = sprintf('check_%d_%s.pdf', $checkId, date('Ymd_His'));
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$absPath = $absDir . DIRECTORY_SEPARATOR . $filename;
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$bytes = file_put_contents($absPath, $binary);
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if ($bytes === false || $bytes < 100) {
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throw new Exception('failed to save pdf to ' . $absPath);
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}
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return self::REPORT_DIR . '/' . $filename;
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}
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private function mustGetCheck($checkId)
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{
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$row = Db::name('plagiarism_check')->where('check_id', $checkId)->find();
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if (!$row) {
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throw new Exception("plagiarism_check #{$checkId} not found");
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}
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return $row;
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}
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private function updateCheck($checkId, array $data)
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{
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$data['utime'] = time();
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Db::name('plagiarism_check')->where('check_id', $checkId)->update($data);
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}
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private function markFailed($checkId, $errMsg)
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{
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$this->updateCheck($checkId, [
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'state' => 4,
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'error_msg' => mb_substr($errMsg, 0, 1000),
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]);
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}
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/**
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* 从 t_article_file 找到投稿主稿（manuscirpt）的本地绝对路径。
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* file_url 在系统里可能是 URL 或相对路径，调用方负责保证可读。
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*
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* @return string 文件绝对路径，找不到时抛异常
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*/
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public function locateArticleManuscript($articleId)
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{
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$row = Db::name('article_file')
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->where('article_id', $articleId)
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->where('type_name', 'manuscirpt') // 历史拼写
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->order('article_file_id desc')
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->find();
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if (!$row || empty($row['file_url'])) {
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throw new Exception("article #{$articleId} has no manuscirpt file");
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}
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return $this->resolveFileUrlToLocal($row['file_url']);
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}
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/**
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* 把 file_url（可能是 http URL 或相对路径）解析成本地绝对路径。
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* 不同环境部署可能有差异，这里用 .env 配置的 STATIC_ROOT 作前缀。
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*/
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public function resolveFileUrlToLocal($fileUrl)
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{
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$fileUrl = trim((string)$fileUrl);
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if ($fileUrl === '') {
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throw new Exception('empty file_url');
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}
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// 已是绝对路径
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if (preg_match('/^([a-zA-Z]:[\\\\\/]|\/)/', $fileUrl) && is_file($fileUrl)) {
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return $fileUrl;
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}
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$staticRoot = trim((string)Env::get('plagiarism.static_root', ''));
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$cdnPrefix = trim((string)Env::get('plagiarism.cdn_prefix', ''));
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// 是 http URL：先试着剥掉 cdn 前缀，映射到本地
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if (preg_match('#^https?://#i', $fileUrl)) {
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if ($cdnPrefix !== '' && stripos($fileUrl, $cdnPrefix) === 0) {
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$rel = ltrim(substr($fileUrl, strlen($cdnPrefix)), '/');
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$local = rtrim($staticRoot, '/\\') . DIRECTORY_SEPARATOR . $rel;
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if (is_file($local)) {
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return $local;
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}
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}
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// 实在不行，下载到 runtime/plagiarism/tmp 临时目录
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return $this->downloadRemoteFile($fileUrl);
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}
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// 相对路径：拼 static_root
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if ($staticRoot !== '') {
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$local = rtrim($staticRoot, '/\\') . DIRECTORY_SEPARATOR . ltrim($fileUrl, '/\\');
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if (is_file($local)) {
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return $local;
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}
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}
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throw new Exception("cannot resolve file_url to local path: {$fileUrl} (set [plagiarism] STATIC_ROOT/CDN_PREFIX in .env)");
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}
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private function downloadRemoteFile($url)
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{
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$rootDir = ROOT_PATH ?: dirname(dirname(__DIR__));
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$tmpDir = rtrim($rootDir, '/\\') . DIRECTORY_SEPARATOR . self::REPORT_DIR . DIRECTORY_SEPARATOR . 'tmp';
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if (!is_dir($tmpDir)) {
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@mkdir($tmpDir, 0755, true);
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}
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$ext = pathinfo(parse_url($url, PHP_URL_PATH), PATHINFO_EXTENSION) ?: 'pdf';
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$local = $tmpDir . DIRECTORY_SEPARATOR . md5($url) . '_' . time() . '.' . $ext;
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$ch = curl_init($url);
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$fh = fopen($local, 'wb');
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curl_setopt_array($ch, [
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CURLOPT_FILE => $fh,
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CURLOPT_FOLLOWLOCATION => true,
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CURLOPT_TIMEOUT => 120,
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CURLOPT_SSL_VERIFYPEER => false,
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]);
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$ok = curl_exec($ch);
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$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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curl_close($ch);
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fclose($fh);
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if (!$ok || $code !== 200 || filesize($local) < 100) {
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@unlink($local);
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throw new Exception("download failed url={$url} http={$code}");
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}
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return $local;
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}
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public function getCheck($checkId)
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{
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return Db::name('plagiarism_check')->where('check_id', $checkId)->find();
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}
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}
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