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<?php
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namespace App\Services\Survey;
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use App\Models\CourseContentEvaluation;
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use App\Models\Upload;
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use Illuminate\Support\Facades\Storage;
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use PhpOffice\PhpSpreadsheet\Spreadsheet;
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use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
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use PhpOffice\PhpSpreadsheet\Cell\DataType;
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use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
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use ZipArchive;
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class SurveyExport
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{
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private const TYPES = ['radio' => '单选/评分', 'checkbox' => '多选', 'text' => '短文本', 'textarea' => '长文本', 'number' => '数字', 'date' => '日期', 'datetime' => '日期时间', 'file' => '文件上传'];
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private static function safeName($name): string
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{
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return mb_substr(trim(preg_replace('/[\\\\\\/<>:"|?*\x00-\x1f]/u', '_', (string) $name), '. '), 0, 80) ?: '未命名';
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}
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public static function build(CourseContentEvaluation $survey): string
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{
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$dir = storage_path('app/survey-exports');
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if (!is_dir($dir)) mkdir($dir, 0700, true);
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$base = $dir.'/'.bin2hex(random_bytes(16));
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$book = new Spreadsheet();
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$zip = new ZipArchive();
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$opened = false;
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try {
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if ($zip->open($base.'.zip', ZipArchive::CREATE | ZipArchive::EXCL) !== true) throw new \RuntimeException('无法创建导出文件');
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$opened = true;
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$summary = $book->getActiveSheet()->setTitle('答卷列表');
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$detail = $book->createSheet()->setTitle('问题详细表');
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$attachments = $book->createSheet()->setTitle('附件清单');
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self::row($summary, 1, ['答卷ID', '问卷名称', '答题人姓名', '学号', '公司', '职务', '首次提交时间', '最近提交时间']);
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self::row($detail, 1, ['答卷ID', '答题人姓名', '章节', '题号', '题目', '子题/维度', '答案', '补充说明', '题型', '题目说明', '所有选项']);
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self::row($attachments, 1, ['答卷ID', '答题人姓名', '题目', '原文件名', '压缩包内路径', '状态']);
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$sr = $dr = $ar = 2;
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$hasSections = $hasDimensions = false;
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$replyRanges = $sectionRanges = $questionRanges = $plainRows = [];
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$current = $survey->courseContentEvaluationAsks()->orderBy('sort')->orderBy('id')->get()->toArray();
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foreach ($survey->courseContentEvaluationForms()->with('user')->lazyById(100) as $reply) {
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$name = $reply->user->name ?? '未填写姓名';
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self::row($summary, $sr++, [$reply->id, $reply->snapshot['title'] ?? $survey->title, $name, $reply->user->no ?? '', $reply->user->company_name ?? '', $reply->user->company_position ?? '', $reply->created_at, $reply->updated_at]);
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$replyStart = $sectionStart = $dr;
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$section = '';
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$number = 0;
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foreach (SurveySchema::replyQuestions($current, $reply->data, $reply->snapshot) as $q) {
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if ($q['edit_input'] === 'section') {
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if ($section !== '' && $dr > $sectionStart) $sectionRanges[] = [$sectionStart, $dr - 1];
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$sectionStart = $dr;
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$section = $q['name'];
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$hasSections = true;
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continue;
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}
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$questionStart = $dr;
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$hidden = !empty($q['hidden']);
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$position = $hidden ? '' : ++$number;
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$extra = $hidden ? '' : ($q['other_text'] ?? '');
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foreach ($q['select_item'] ?? [] as $opt) {
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$note = $q['option_texts'][$opt['key']] ?? '';
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if (!$hidden && $note !== '') $extra .= ($extra ? "\n" : '').$opt['value'].'：'.$note;
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}
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$fields = $q['edit_input'] === 'multi_dimension' ? ($q['dimensions'] ?? []) : [$q];
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foreach ($fields as $field) {
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$options = array_map(fn ($o) => $o['value'].(isset($o['score']) ? '（'.$o['score'].'分）' : ''), $field['select_item'] ?? []);
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self::row($detail, $dr++, [$reply->id, $name, $section, $position, $q['name'], $q['edit_input'] === 'multi_dimension' ? $field['name'] : '', $hidden ? '' : ($field['display_value'] ?? ''), $extra, self::TYPES[$field['edit_input']] ?? $field['edit_input'], $field['help'] ?? $q['help'] ?? '', implode("\n", $options)]);
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}
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if ($q['edit_input'] === 'multi_dimension' && $dr > $questionStart) {
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$hasDimensions = true;
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$questionRanges[] = [$questionStart, $dr - 1];
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} elseif ($dr > $questionStart) $plainRows[] = $questionStart;
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if ($hidden || $q['edit_input'] !== 'file') continue;
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foreach ($q['value'] ?? [] as $item) {
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$file = Upload::find($item['id'] ?? null);
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$original = $file->original_name ?? $item['original_name'] ?? '附件';
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$entry = '附件/'.$reply->id.'_'.self::safeName($name).'/'.$q['id'].'_'.self::safeName($q['name']).'/'.($item['id'] ?? '0').'_'.self::safeName($original);
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$valid = $file && $file->folder === 'storage/files' && basename($file->name) === $file->name && Storage::disk('public')->exists('files/'.$file->name);
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if ($valid && !$zip->addFile(Storage::disk('public')->path('files/'.$file->name), $entry)) throw new \RuntimeException('附件打包失败');
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self::row($attachments, $ar++, [$reply->id, $name, $q['name'], $original, $valid ? $entry : '', $valid ? '已打包' : '文件缺失，未打包']);
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}
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}
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if ($dr > $replyStart) $replyRanges[] = [$replyStart, $dr - 1];
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if ($section !== '' && $dr > $sectionStart) $sectionRanges[] = [$sectionStart, $dr - 1];
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}
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if (!$hasDimensions) $detail->removeColumn('F');
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if (!$hasSections) $detail->removeColumn('C');
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$titleColumn = $hasSections ? 'E' : 'D';
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$numberColumn = $hasSections ? 'D' : 'C';
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$dimensionColumn = $hasSections ? 'F' : 'E';
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foreach ($replyRanges as [$start, $end]) {
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self::merge($detail, 'A', $start, $end);
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self::merge($detail, 'B', $start, $end);
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}
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if ($hasSections) foreach ($sectionRanges as [$start, $end]) self::merge($detail, 'C', $start, $end);
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foreach ($questionRanges as [$start, $end]) {
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self::merge($detail, $titleColumn, $start, $end);
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self::merge($detail, $numberColumn, $start, $end);
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}
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// In mixed questionnaires a plain question spans the unused dimension cell.
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if ($hasDimensions) foreach ($plainRows as $row) $detail->mergeCells($titleColumn.$row.':'.$dimensionColumn.$row);
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foreach ($book->getAllSheets() as $sheet) {
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$sheet->freezePane('C2');
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$sheet->setAutoFilter($sheet->calculateWorksheetDimension());
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$sheet->getStyle('1:1')->getFont()->setBold(true);
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$sheet->getStyle($sheet->calculateWorksheetDimension())->getAlignment()->setWrapText(true)->setVertical('top');
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foreach (range(1, Coordinate::columnIndexFromString($sheet->getHighestColumn())) as $col) $sheet->getColumnDimensionByColumn($col)->setWidth($col < 3 ? 18 : 32);
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}
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foreach ($detail->getMergeCells() as $range) $detail->getStyle($range)->getAlignment()->setVertical('center');
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(new Xlsx($book))->save($base.'.xlsx');
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$zip->addFile($base.'.xlsx', '问卷答卷明细.xlsx');
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if (!$zip->close()) throw new \RuntimeException('导出压缩包生成失败');
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$opened = false;
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return $base.'.zip';
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} catch (\Throwable $e) {
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if ($opened) $zip->close();
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@unlink($base.'.zip');
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throw $e;
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} finally {
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@unlink($base.'.xlsx');
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$book->disconnectWorksheets();
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}
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}
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private static function merge($sheet, string $column, int $start, int $end): void
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{
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if ($end > $start) $sheet->mergeCells($column.$start.':'.$column.$end);
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}
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private static function row($sheet, int $row, array $values): void
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{
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foreach ($values as $index => $value) {
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// User input is always text, never an Excel formula.
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$sheet->setCellValueExplicit(Coordinate::stringFromColumnIndex($index + 1).$row, (string) $value, DataType::TYPE_STRING);
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}
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}
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}
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