pongpon pitisuk
559 lines
22 KiB
PHP
559 lines
22 KiB
PHP
<?php
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/**
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* Import Survey from PDF API
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* POST ?action=parsePdf - Upload and parse PDF file to survey JSON
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* POST ?action=confirmImport - Save parsed survey JSON into database
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*/
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require_once __DIR__ . '/../config/database.php';
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require_once __DIR__ . '/../config/auth.php';
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require_once __DIR__ . '/../vendor/autoload.php';
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use Smalot\PdfParser\Parser;
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header('Content-Type: application/json; charset=utf-8');
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if (php_sapi_name() !== 'cli') {
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requireLogin();
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}
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if (isset($_GET['action'])) {
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$action = $_GET['action'] ?? '';
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switch ($action) {
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case 'parsePdf':
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parsePdf();
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break;
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case 'confirmImport':
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confirmImport();
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break;
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default:
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jsonResponse(['error' => 'Invalid action'], 400);
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}
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}
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/**
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* Handle PDF upload and extraction
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*/
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function parsePdf() {
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if (!isset($_FILES['pdf_file']) || $_FILES['pdf_file']['error'] !== UPLOAD_ERR_OK) {
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$errorMsg = 'กรุณาเลือกไฟล์ PDF';
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if (isset($_FILES['pdf_file']['error'])) {
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switch ($_FILES['pdf_file']['error']) {
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case UPLOAD_ERR_INI_SIZE:
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case UPLOAD_ERR_FORM_SIZE:
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$errorMsg = 'ขนาดไฟล์ใหญ่เกินขีดจำกัดของเซิร์ฟเวอร์';
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break;
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case UPLOAD_ERR_NO_FILE:
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$errorMsg = 'ไม่มีไฟล์ถูกอัปโหลด';
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break;
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}
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}
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jsonResponse(['error' => $errorMsg], 400);
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}
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$file = $_FILES['pdf_file'];
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$ext = strtolower(pathinfo($file['name'], PATHINFO_EXTENSION));
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if ($ext !== 'pdf') {
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jsonResponse(['error' => 'รองรับเฉพาะไฟล์เอกสาร PDF เท่านั้น'], 400);
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}
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$tmpPath = $file['tmp_name'];
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try {
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$parser = new Parser();
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$pdf = $parser->parseFile($tmpPath);
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$rawText = $pdf->getText();
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} catch (\Throwable $e) {
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jsonResponse(['error' => 'ไม่สามารถอ่านไฟล์ PDF ได้: ' . $e->getMessage()], 500);
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}
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$rawText = trim($rawText);
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if (empty($rawText)) {
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jsonResponse(['error' => 'ไม่พบข้อความในไฟล์ PDF (อาจเป็นไฟล์สแกนรูปภาพล้วนที่ไม่มี Text Layer)'], 400);
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}
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// Parse structured survey from raw text
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$parsedSurvey = parseThaiSurveyText($rawText, pathinfo($file['name'], PATHINFO_FILENAME));
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jsonResponse([
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'success' => true,
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'message' => 'อ่านและวิเคราะห์โครงสร้างแบบประเมินจาก PDF สำเร็จ',
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'raw_text_preview' => mb_substr($rawText, 0, 500, 'UTF-8') . '...',
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'survey' => $parsedSurvey
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]);
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}
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/**
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* Save finalized survey to DB
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*/
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function confirmImport() {
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$input = json_decode(file_get_contents('php://input'), true);
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$projectId = !empty($input['project_id']) ? (int)$input['project_id'] : null;
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$surveyData = $input['survey_data'] ?? null;
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if (!$surveyData || empty($surveyData['title'])) {
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jsonResponse(['error' => 'ข้อมูลแบบประเมินไม่ถูกต้อง หรือไม่มีชื่อแบบประเมิน'], 400);
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}
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$db = getDB();
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$uniqueLink = bin2hex(random_bytes(16));
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$db->beginTransaction();
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try {
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$stmt = $db->prepare("INSERT INTO surveys (user_id, project_id, title, description, unique_link, status) VALUES (?, ?, ?, ?, ?, 'active')");
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$stmt->execute([
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$_SESSION['user_id'] ?? 1,
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$projectId,
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$surveyData['title'],
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$surveyData['description'] ?? '',
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$uniqueLink
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]);
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$surveyId = $db->lastInsertId();
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$sections = $surveyData['sections'] ?? [];
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$secNum = 1;
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foreach ($sections as $sec) {
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$stmt = $db->prepare("INSERT INTO survey_sections (survey_id, section_number, title, description, category) VALUES (?, ?, ?, ?, ?)");
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$secCategory = $sec['category'] ?? 'rating';
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$stmt->execute([
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$surveyId,
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$secNum,
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$sec['title'] ?? ('ตอนที่ ' . $secNum),
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$sec['description'] ?? '',
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$secCategory
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]);
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$sectionId = $db->lastInsertId();
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$orderNum = 1;
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// Direct questions in this section
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if (!empty($sec['questions'])) {
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foreach ($sec['questions'] as $q) {
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insertQuestionRecord($db, $sectionId, null, $q, $orderNum++);
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}
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}
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// Headings with sub-questions (e.g. ด้านวิทยากร, ด้านสถานที่)
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if (!empty($sec['headings'])) {
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$headingOrder = 1;
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foreach ($sec['headings'] as $h) {
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$stmtH = $db->prepare("INSERT INTO survey_headings (section_id, title, description, order_num) VALUES (?, ?, ?, ?)");
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$stmtH->execute([
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$sectionId,
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$h['title'] ?? ('ด้านที่ ' . $headingOrder),
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$h['description'] ?? '',
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$headingOrder++
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]);
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$headingId = $db->lastInsertId();
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if (!empty($h['questions'])) {
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foreach ($h['questions'] as $hq) {
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insertQuestionRecord($db, $sectionId, $headingId, $hq, $orderNum++);
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}
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}
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}
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}
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$secNum++;
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}
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$db->commit();
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jsonResponse([
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'success' => true,
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'message' => 'สร้างแบบประเมินจาก PDF เรียบร้อยแล้ว',
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'survey_id' => $surveyId,
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'unique_link' => $uniqueLink,
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'title' => $surveyData['title']
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]);
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} catch (\Throwable $e) {
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$db->rollBack();
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jsonResponse(['error' => 'บันทึกข้อมูลไม่สำเร็จ: ' . $e->getMessage()], 500);
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}
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}
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function insertQuestionRecord($db, $sectionId, $headingId, $q, $orderNum) {
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$qText = trim($q['question_text'] ?? '');
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if (empty($qText)) return;
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$qType = $q['question_type'] ?? 'radio';
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$isRequired = isset($q['is_required']) ? (int)$q['is_required'] : 1;
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$options = !empty($q['options']) && is_array($q['options']) ? json_encode(array_values($q['options']), JSON_UNESCAPED_UNICODE) : null;
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$scaleMin = $q['scale_min'] ?? 1;
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$scaleMax = $q['scale_max'] ?? 5;
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$desc = $q['description'] ?? '';
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$stmt = $db->prepare("INSERT INTO survey_questions (section_id, heading_id, question_text, question_type, is_required, order_num, options, scale_min, scale_max, description) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
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$stmt->execute([
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$sectionId,
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$headingId,
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$qText,
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$qType,
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$isRequired,
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$orderNum,
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$options,
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$scaleMin,
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$scaleMax,
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$desc
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]);
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}
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/**
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* Intelligent Thai Survey Pattern Parser
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*/
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function parseThaiSurveyText($text, $defaultTitle = 'แบบประเมินความพึงพอใจ') {
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// 1. Normalize line endings and whitespace
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$text = str_replace(["\r\n", "\r"], "\n", $text);
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// Replace special unicode bullets/boxes with standard marks
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$text = preg_replace('/[\x{25A0}\x{25A1}\x{25CB}\x{25CF}\x{2610}\x{2611}\x{274F}\x{25EF}]/u', '[ ]', $text);
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$rawLines = explode("\n", $text);
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$lines = [];
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foreach ($rawLines as $line) {
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$trimmed = trim($line);
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if ($trimmed !== '') {
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$lines[] = $trimmed;
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}
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}
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// 2. Extract Document Title and Description
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$title = '';
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$description = '';
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$startIndex = 0;
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$titleLines = [];
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// Filter out standard scale headers/garbage lines like "5 4 3 2 1", "มากที่สุด มาก ปานกลาง..."
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$ignoredPatterns = [
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'/^ระดับความพึงพอใจ/u',
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'/^ระดับความคิดเห็น/u',
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'/^เกณฑ์การประเมิน/u',
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'/^5\s+4\s+3\s+2\s+1/u',
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'/^หมายเหตุ\s*:/u',
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'/^หน้า\s*\d+/u',
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'/^page\s*\d+/i'
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];
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for ($i = 0; $i < min(8, count($lines)); $i++) {
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$line = $lines[$i];
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// If we hit "ตอนที่" or "ส่วนที่" or "คำชี้แจง", stop title accumulation
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if (preg_match('/^(ตอนที่|ส่วนที่|คำชี้แจง|คำอธิบาย|ข้อชี้แจง)/u', $line)) {
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$startIndex = $i;
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break;
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}
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if (preg_match('/(แบบประเมิน|แบบสอบถาม|โครงการ|การอบรม|รายงานการประเมิน|แบบสำรวจ)/u', $line)) {
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$titleLines[] = $line;
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$startIndex = $i + 1;
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} elseif (empty($titleLines) && $i === 0) {
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$titleLines[] = $line;
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$startIndex = 1;
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}
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}
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$title = !empty($titleLines) ? implode(' ', $titleLines) : ($defaultTitle ?: 'แบบประเมินความพึงพอใจ');
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// 3. Scan for "คำชี้แจง" (Description)
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for ($i = $startIndex; $i < min($startIndex + 6, count($lines)); $i++) {
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$line = $lines[$i];
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if (preg_match('/^(คำชี้แจง|คำอธิบาย|ข้อชี้แจง)[\s\:\.\-–]*(.*)/u', $line, $m)) {
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$description = trim($m[2]);
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if (empty($description) && isset($lines[$i + 1])) {
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$description = $lines[$i + 1];
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$startIndex = $i + 2;
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} else {
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$startIndex = $i + 1;
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}
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break;
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}
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}
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// 4. Partition lines into Sections
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$sections = [];
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$currentSection = null;
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for ($i = $startIndex; $i < count($lines); $i++) {
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$line = $lines[$i];
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// Check if line is a Section Header: "ตอนที่ 1...", "ส่วนที่ 1...", "ตอนที่ 2...", "ตอนที่ 3..."
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if (preg_match('/^(ตอนที่|ส่วนที่)\s*([0-9๑-๙]+|หนึ่ง|สอง|สาม|สี่|ห้า)[\s\:\.\-–]*(.*)/u', $line, $matches)) {
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if ($currentSection !== null) {
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$sections[] = $currentSection;
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}
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$rawSecNum = $matches[2];
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$secNumMap = ['หนึ่ง' => 1, 'สอง' => 2, 'สาม' => 3, 'สี่' => 4, '๑' => 1, '๒' => 2, '๓' => 3, '๔' => 4];
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$secNum = $secNumMap[$rawSecNum] ?? (int)$rawSecNum;
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if ($secNum <= 0) $secNum = count($sections) + 1;
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$secTitle = trim($matches[0]);
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$secCategory = 'rating';
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if (preg_match('/(ข้อมูลทั่วไป|สถานภาพ|ข้อมูลส่วนตัว|สถานะ)/u', $secTitle)) {
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$secCategory = 'general';
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} elseif (preg_match('/(ข้อเสนอแนะ|ความคิดเห็น|ความเห็นเพิ่มเติม|ข้อคิดเห็น)/u', $secTitle)) {
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$secCategory = 'suggestion';
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} elseif (preg_match('/(ความพึงพอใจ|ระดับความพึงพอใจ|การประเมินผล|เกณฑ์)/u', $secTitle)) {
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$secCategory = 'rating';
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}
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$currentSection = [
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'section_number' => $secNum,
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'title' => $secTitle,
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'description' => '',
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'category' => $secCategory,
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'raw_lines' => []
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];
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continue;
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}
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if ($currentSection === null) {
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// Default section 1 if not explicitly declared
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$currentSection = [
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'section_number' => 1,
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'title' => 'ตอนที่ 1 ข้อมูลทั่วไปและข้อประเมิน',
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'description' => '',
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'category' => 'general',
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'raw_lines' => []
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];
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}
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$currentSection['raw_lines'][] = $line;
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}
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if ($currentSection !== null) {
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$sections[] = $currentSection;
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}
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// 5. Parse each section's contents (Headings, Questions, Options, Rating Scales)
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$parsedSections = [];
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$secCounter = 1;
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foreach ($sections as $sec) {
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$secCategory = $sec['category'];
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$rawSecLines = $sec['raw_lines'];
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$headings = [];
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$questions = [];
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// Check if section contains sub-headings (e.g. ด้านที่ 1..., 1. ด้าน..., 2. ด้าน...)
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$currentHeading = null;
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$currentQuestion = null;
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for ($j = 0; $j < count($rawSecLines); $j++) {
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$line = $rawSecLines[$j];
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// Ignore table scale legends / headers
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$shouldSkip = false;
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foreach ($ignoredPatterns as $pat) {
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if (preg_match($pat, $line)) {
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$shouldSkip = true;
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break;
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}
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}
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if ($shouldSkip) continue;
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// Check if line is a Heading / Dimension:
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// "ด้านที่ 1 ด้านวิทยากร", "1. ด้านวิทยากร", "ด้านกระบวนการขั้นตอน", "1. ด้านเนื้อหา"
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if (preg_match('/^(ด้านที่\s*[0-9๑-๙]+|[0-9๑-๙]+\.\s*ด้าน|ด้าน[ก-๙]+)[\s\:\.\-–]*(.*)/u', $line) && !preg_match('/\[\s*\]/u', $line)) {
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// Finalize previous question
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if ($currentQuestion !== null) {
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if ($currentHeading !== null) {
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$currentHeading['questions'][] = $currentQuestion;
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} else {
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$questions[] = $currentQuestion;
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}
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$currentQuestion = null;
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}
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if ($currentHeading !== null) {
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$headings[] = $currentHeading;
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}
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$currentHeading = [
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'title' => $line,
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'description' => '',
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'questions' => []
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];
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continue;
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}
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// Check if line is a question
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// e.g. "1. เพศ", "1.1 วิทยากรมีความรู้", "2. สถานภาพ", "• ความเหมาะสมของสถานที่"
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// or starting with number: "1.1", "1.", "2)", "(1)"
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$isNumberedQuestion = preg_match('/^([0-9๑-๙]+\.[0-9๑-๙]+[\.\)]?\s*|[0-9๑-๙]+[\.\)]\s*|[\-\•\*]\s+)(.*)/u', $line, $qMatch);
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// Or general question prompt: "เพศ :", "ระดับการศึกษา :", "ชั้นปี :"
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$isPromptQuestion = preg_match('/^(เพศ|สถานะ|สถานภาพ|อายุ|ระดับการศึกษา|ระดับชั้น|สาขาวิชา|แผนกวิชา|สังกัด|ตำแหน่ง|อาชีพ)[\s\:\.\-–]*/u', $line);
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if ($isNumberedQuestion || ($isPromptQuestion && !preg_match('/\[\s*\]/u', $line))) {
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// Save previous question
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if ($currentQuestion !== null) {
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if ($currentHeading !== null) {
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$currentHeading['questions'][] = $currentQuestion;
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} else {
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$questions[] = $currentQuestion;
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}
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$currentQuestion = null;
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}
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$qText = $isNumberedQuestion ? trim($qMatch[2]) : $line;
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// Remove numbering from question text for clean display if desired, or keep clear text
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if (empty($qText)) $qText = $line;
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// Determine default question type based on section or content
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$qType = 'radio';
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$scaleMin = 1;
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$scaleMax = 5;
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$options = null;
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if ($secCategory === 'suggestion') {
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$qType = 'text';
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} elseif ($secCategory === 'rating' || $currentHeading !== null || preg_match('/^[0-9๑-๙]+\.[0-9๑-๙]+/u', $line)) {
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$qType = 'radio';
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$options = null; // Rating scale 1-5
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} elseif ($secCategory === 'general') {
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$qType = 'radio';
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$options = [];
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}
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// Check if options are inline on the same line (e.g. "[ ] ชาย [ ] หญิง")
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$inlineOptions = extractOptionsFromLine($line);
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if (!empty($inlineOptions)) {
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$options = $inlineOptions;
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// Clean question text of options
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$qText = preg_replace('/(\[\s*\]|\(\s*\)|[1-4]\)).*/u', '', $qText);
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$qText = trim($qText, " :.-–");
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if (empty($qText)) $qText = $line;
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}
|
||
|
||
$currentQuestion = [
|
||
'question_text' => $qText,
|
||
'question_type' => $qType,
|
||
'is_required' => 1,
|
||
'description' => '',
|
||
'options' => $options,
|
||
'scale_min' => $scaleMin,
|
||
'scale_max' => $scaleMax
|
||
];
|
||
continue;
|
||
}
|
||
|
||
// Check if line contains options for the current question
|
||
// e.g. "[ ] ชาย [ ] หญิง", "( ) 1. นักเรียน ( ) 2. ครู", "1) ปวช. 2) ปวส."
|
||
if ($currentQuestion !== null) {
|
||
$extractedOptions = extractOptionsFromLine($line);
|
||
if (!empty($extractedOptions)) {
|
||
if (!is_array($currentQuestion['options'])) {
|
||
$currentQuestion['options'] = [];
|
||
}
|
||
foreach ($extractedOptions as $opt) {
|
||
if (!in_array($opt, $currentQuestion['options'])) {
|
||
$currentQuestion['options'][] = $opt;
|
||
}
|
||
}
|
||
$currentQuestion['question_type'] = 'radio';
|
||
continue;
|
||
}
|
||
|
||
// If this is a continuation of question text
|
||
if (empty($currentQuestion['options']) && $currentQuestion['question_type'] === 'radio' && $secCategory !== 'general') {
|
||
// Could be multi-line question text
|
||
if (mb_strlen($line, 'UTF-8') < 100 && !preg_match('/^[0-9]/', $line)) {
|
||
$currentQuestion['question_text'] .= ' ' . $line;
|
||
continue;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// Add last question
|
||
if ($currentQuestion !== null) {
|
||
if ($currentHeading !== null) {
|
||
$currentHeading['questions'][] = $currentQuestion;
|
||
} else {
|
||
$questions[] = $currentQuestion;
|
||
}
|
||
}
|
||
|
||
// Add last heading
|
||
if ($currentHeading !== null) {
|
||
$headings[] = $currentHeading;
|
||
}
|
||
|
||
// If section has neither questions nor headings, check if raw lines can be converted to text questions
|
||
if (empty($questions) && empty($headings) && !empty($rawSecLines)) {
|
||
foreach ($rawSecLines as $raw) {
|
||
if (mb_strlen($raw, 'UTF-8') > 3) {
|
||
$questions[] = [
|
||
'question_text' => $raw,
|
||
'question_type' => ($secCategory === 'suggestion') ? 'text' : 'radio',
|
||
'is_required' => 1,
|
||
'description' => '',
|
||
'options' => null,
|
||
'scale_min' => 1,
|
||
'scale_max' => 5
|
||
];
|
||
}
|
||
}
|
||
}
|
||
|
||
$parsedSections[] = [
|
||
'section_number' => $secCounter++,
|
||
'title' => $sec['title'],
|
||
'description' => $sec['description'],
|
||
'category' => $secCategory,
|
||
'headings' => $headings,
|
||
'questions' => $questions
|
||
];
|
||
}
|
||
|
||
// Default safety fallback if empty
|
||
if (empty($parsedSections)) {
|
||
$parsedSections[] = [
|
||
'section_number' => 1,
|
||
'title' => 'ตอนที่ 1 ข้อมูลและข้อคำถาม',
|
||
'description' => '',
|
||
'category' => 'general',
|
||
'headings' => [],
|
||
'questions' => []
|
||
];
|
||
}
|
||
|
||
return [
|
||
'title' => $title,
|
||
'description' => $description ?: 'แบบประเมินความพึงพอใจ นำเข้าจากไฟล์ PDF',
|
||
'sections' => $parsedSections
|
||
];
|
||
}
|
||
|
||
/**
|
||
* Extract multiple choice options from a line
|
||
*/
|
||
function extractOptionsFromLine($line) {
|
||
$options = [];
|
||
|
||
// Pattern 1: [ ] ชาย [ ] หญิง or ( ) 1. นักเรียน ( ) 2. ครู
|
||
if (preg_match_all('/(?:\[\s*\]|\(\s*\)|□|○)\s*([^\(\)\[\]□○\t\n]+)/u', $line, $matches)) {
|
||
foreach ($matches[1] as $opt) {
|
||
$cleanOpt = trim(preg_replace('/^[0-9๑-๙]+[\.\)]\s*/u', '', trim($opt)));
|
||
if (!empty($cleanOpt)) {
|
||
$options[] = $cleanOpt;
|
||
}
|
||
}
|
||
}
|
||
|
||
// Pattern 2: 1) ชาย 2) หญิง 3) อื่นๆ
|
||
if (empty($options) && preg_match_all('/(?:^|\s+)[0-9๑-๙]+[\)]\s*([^\d\)]+)/u', $line, $matches)) {
|
||
foreach ($matches[1] as $opt) {
|
||
$cleanOpt = trim($opt);
|
||
if (!empty($cleanOpt) && mb_strlen($cleanOpt, 'UTF-8') < 60) {
|
||
$options[] = $cleanOpt;
|
||
}
|
||
}
|
||
}
|
||
|
||
return $options;
|
||
}
|