pongpon pitisuk
330 lines
14 KiB
PHP
330 lines
14 KiB
PHP
<?php
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/**
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* Export API
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* GET ?action=pdf&survey_id=X — Export to PDF
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* GET ?action=word&survey_id=X — Export to Word (DOCX)
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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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requireLogin();
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$action = $_GET['action'] ?? '';
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$surveyId = (int)($_GET['survey_id'] ?? 0);
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if (!$surveyId) {
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header('Content-Type: application/json; charset=utf-8');
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jsonResponse(['error' => 'Missing survey_id'], 400);
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}
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// Check access
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$db = getDB();
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if (!isAdmin()) {
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$stmt = $db->prepare("SELECT user_id FROM surveys WHERE id = ?");
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$stmt->execute([$surveyId]);
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$survey = $stmt->fetch();
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if (!$survey || $survey['user_id'] != $_SESSION['user_id']) {
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header('Content-Type: application/json; charset=utf-8');
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jsonResponse(['error' => 'ไม่มีสิทธิ์'], 403);
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}
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}
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// Get statistics data
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$statsData = getStatsData($surveyId);
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switch ($action) {
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case 'pdf':
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exportPDF($statsData);
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break;
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case 'word':
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exportWord($statsData);
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break;
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default:
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header('Content-Type: application/json; charset=utf-8');
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jsonResponse(['error' => 'Invalid action'], 400);
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}
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function getStatsData($surveyId) {
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$db = getDB();
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// Survey info
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$stmt = $db->prepare("SELECT s.*, u.full_name as creator_name FROM surveys s LEFT JOIN users u ON s.user_id = u.id WHERE s.id = ?");
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$stmt->execute([$surveyId]);
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$survey = $stmt->fetch();
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// Total responses
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$stmt = $db->prepare("SELECT COUNT(*) as total FROM survey_responses WHERE survey_id = ?");
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$stmt->execute([$surveyId]);
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$totalResponses = (int)$stmt->fetch()['total'];
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// Get sections with questions & stats
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$stmt = $db->prepare("SELECT * FROM survey_sections WHERE survey_id = ? ORDER BY section_number");
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$stmt->execute([$surveyId]);
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$sections = $stmt->fetchAll();
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foreach ($sections as &$section) {
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// Load headings
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$hStmt = $db->prepare("SELECT * FROM survey_headings WHERE section_id = ? ORDER BY order_num");
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$hStmt->execute([$section['id']]);
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$headings = $hStmt->fetchAll();
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$qStmt = $db->prepare("SELECT * FROM survey_questions WHERE section_id = ? ORDER BY order_num");
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$qStmt->execute([$section['id']]);
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$questions = $qStmt->fetchAll();
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foreach ($questions as &$q) {
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if ($q['question_type'] === 'radio' && empty($q['options'])) {
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$aStmt = $db->prepare("
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SELECT answer_value, COUNT(*) as cnt
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FROM response_answers
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WHERE question_id = ? AND answer_value REGEXP '^[0-9]+$'
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GROUP BY answer_value
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");
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$aStmt->execute([$q['id']]);
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$freqData = $aStmt->fetchAll();
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$values = [];
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$freq = [];
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for ($i = 1; $i <= 5; $i++) $freq[$i] = 0;
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foreach ($freqData as $fd) {
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$val = (int)$fd['answer_value'];
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if ($val >= 1 && $val <= 5) {
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$freq[$val] = (int)$fd['cnt'];
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for ($j = 0; $j < (int)$fd['cnt']; $j++) $values[] = $val;
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}
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}
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$mean = count($values) > 0 ? array_sum($values) / count($values) : 0;
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$sd = 0;
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if (count($values) > 1) {
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$sumSq = 0;
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foreach ($values as $v) $sumSq += pow($v - $mean, 2);
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$sd = sqrt($sumSq / (count($values) - 1));
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}
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$q['mean'] = round($mean, 2);
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$q['sd'] = round($sd, 2);
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$q['frequencies'] = $freq;
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$q['total_answers'] = count($values);
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if ($mean >= 4.51) $q['interpretation'] = 'มากที่สุด';
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elseif ($mean >= 3.51) $q['interpretation'] = 'มาก';
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elseif ($mean >= 2.51) $q['interpretation'] = 'ปานกลาง';
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elseif ($mean >= 1.51) $q['interpretation'] = 'น้อย';
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else $q['interpretation'] = 'น้อยที่สุด';
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} elseif (in_array($q['question_type'], ['dropdown', 'checkbox', 'radio'])) {
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$aStmt = $db->prepare("SELECT answer_value, COUNT(*) as cnt FROM response_answers WHERE question_id = ? GROUP BY answer_value ORDER BY cnt DESC");
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$aStmt->execute([$q['id']]);
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$q['frequencies'] = $aStmt->fetchAll();
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}
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if ($q['question_type'] === 'text') {
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$aStmt = $db->prepare("SELECT answer_value FROM response_answers WHERE question_id = ? AND answer_value != ''");
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$aStmt->execute([$q['id']]);
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$q['text_responses'] = array_column($aStmt->fetchAll(), 'answer_value');
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}
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}
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unset($q); // Break the reference to prevent overwriting last element
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// Group questions by heading
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$looseQuestions = [];
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$headingQuestionsMap = [];
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foreach ($questions as $q) {
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if (!empty($q['heading_id'])) {
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$headingQuestionsMap[$q['heading_id']][] = $q;
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} else {
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$looseQuestions[] = $q;
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}
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}
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foreach ($headings as &$h) {
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$h['questions'] = $headingQuestionsMap[$h['id']] ?? [];
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}
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$section['headings'] = $headings;
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$section['questions'] = $looseQuestions;
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}
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return [
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'survey' => $survey,
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'total_responses' => $totalResponses,
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'sections' => $sections
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];
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}
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function generateHTML($data) {
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$survey = $data['survey'];
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$totalResponses = $data['total_responses'];
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$sections = $data['sections'];
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$html = '<!DOCTYPE html><html lang="th"><head><meta charset="UTF-8">';
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$html .= '<style>
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body { font-family: "TH Sarabun New", "Sarabun", sans-serif; font-size: 16px; line-height: 1.6; }
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h1 { text-align: center; font-size: 20px; margin-bottom: 5px; }
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h2 { font-size: 18px; margin-top: 20px; border-bottom: 1px solid #333; padding-bottom: 5px; }
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table { width: 100%; border-collapse: collapse; margin: 10px 0; }
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th, td { border: 1px solid #333; padding: 6px 10px; text-align: center; font-size: 14px; }
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th { background-color: #f0f0f0; font-weight: bold; }
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td:first-child { text-align: left; }
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.info { margin: 5px 0; }
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.text-response { padding: 5px 0; border-bottom: 1px dotted #ccc; }
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</style></head><body>';
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$html .= '<h1>รายงานผลการประเมิน</h1>';
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$html .= '<h1>' . htmlspecialchars($survey['title']) . '</h1>';
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$html .= '<p class="info"><strong>ผู้สร้าง:</strong> ' . htmlspecialchars($survey['creator_name'] ?? '') . '</p>';
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$html .= '<p class="info"><strong>จำนวนผู้ตอบ:</strong> ' . $totalResponses . ' คน</p>';
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$html .= '<p class="info"><strong>วันที่:</strong> ' . date('d/m/Y', strtotime($survey['created_at'])) . '</p>';
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foreach ($sections as $section) {
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$cleanSectionTitle = preg_replace('/^ส่วนที่\s*[\d๑-๙]+\s*/u', '', $section['title']);
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$cleanSectionTitle = preg_replace('/^\s*[\d๑-๙]+[\.\)\s\-:\x{00A0}]*\s*/u', '', $cleanSectionTitle);
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$html .= '<h2>' . htmlspecialchars($cleanSectionTitle) . '</h2>';
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// Render headings and their questions
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if (!empty($section['headings'])) {
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foreach ($section['headings'] as $heading) {
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if (!empty($heading['questions'])) {
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$cleanHeadingTitle = preg_replace('/^\s*[\d๑-๙]+[\.\)\s\-:\x{00A0}]*\s*/u', '', $heading['title']);
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$html .= '<h3 style="font-size:16px; margin-top:15px; color:#2563eb; border-left:3px solid #2563eb; padding-left:8px;">' . htmlspecialchars($cleanHeadingTitle) . '</h3>';
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if (!empty($heading['description'])) {
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$html .= '<p style="font-size:13px; color:#666; margin:0 0 8px 11px;">' . htmlspecialchars($heading['description']) . '</p>';
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}
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$html .= renderQuestionsHTML($heading['questions']);
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}
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}
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}
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// Render loose questions
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if (!empty($section['questions'])) {
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$html .= renderQuestionsHTML($section['questions']);
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}
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}
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$html .= '</body></html>';
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return $html;
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}
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function renderQuestionsHTML($questions) {
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$html = '';
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$hasRating = false;
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foreach ($questions as $q) {
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if ($q['question_type'] === 'radio' && empty($q['options'])) { $hasRating = true; break; }
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}
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if ($hasRating) {
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$html .= '<table>';
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$html .= '<tr><th rowspan="2">รายการประเมิน</th><th colspan="5">ระดับความคิดเห็น (ความถี่)</th><th rowspan="2">X̄</th><th rowspan="2">S.D.</th><th rowspan="2">แปลผล</th></tr>';
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$html .= '<tr><th>5</th><th>4</th><th>3</th><th>2</th><th>1</th></tr>';
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$totalMean = 0;
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$totalSD = 0;
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$ratingCount = 0;
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foreach ($questions as $q) {
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if ($q['question_type'] === 'radio' && empty($q['options'])) {
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$cleanText = preg_replace('/^\s*[\d๑-๙]+[\.\)\s\-:\x{00A0}]*\s*/u', '', $q['question_text']);
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$html .= '<tr>';
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$html .= '<td>' . htmlspecialchars($cleanText) . '</td>';
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for ($i = 5; $i >= 1; $i--) {
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$html .= '<td>' . ($q['frequencies'][$i] ?? 0) . '</td>';
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}
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$html .= '<td>' . number_format($q['mean'] ?? 0, 2) . '</td>';
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$html .= '<td>' . number_format($q['sd'] ?? 0, 2) . '</td>';
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$html .= '<td>' . ($q['interpretation'] ?? '-') . '</td>';
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$html .= '</tr>';
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$totalMean += $q['mean'] ?? 0;
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$totalSD += $q['sd'] ?? 0;
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$ratingCount++;
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}
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}
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if ($ratingCount > 0) {
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$avgMean = $totalMean / $ratingCount;
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$avgSD = $totalSD / $ratingCount;
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$avgInterp = '';
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if ($avgMean >= 4.51) $avgInterp = 'มากที่สุด';
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elseif ($avgMean >= 3.51) $avgInterp = 'มาก';
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elseif ($avgMean >= 2.51) $avgInterp = 'ปานกลาง';
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elseif ($avgMean >= 1.51) $avgInterp = 'น้อย';
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else $avgInterp = 'น้อยที่สุด';
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$html .= '<tr style="font-weight:bold;background:#f9f9f9;">';
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$html .= '<td>รวมเฉลี่ย</td><td colspan="5"></td>';
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$html .= '<td>' . number_format($avgMean, 2) . '</td>';
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$html .= '<td>' . number_format($avgSD, 2) . '</td>';
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$html .= '<td>' . $avgInterp . '</td>';
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$html .= '</tr>';
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}
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$html .= '</table>';
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}
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// Frequency tables for dropdown/checkbox/custom radio
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foreach ($questions as $q) {
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if (in_array($q['question_type'], ['dropdown', 'checkbox', 'radio']) && (!empty($q['options']) || $q['question_type'] !== 'radio')) {
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if (!empty($q['frequencies'])) {
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$cleanText = preg_replace('/^\s*[\d๑-๙]+[\.\)\s\-:\x{00A0}]*\s*/u', '', $q['question_text']);
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$html .= '<p><strong>' . htmlspecialchars($cleanText) . '</strong></p>';
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$html .= '<table><tr><th>ตัวเลือก</th><th>ความถี่</th><th>ร้อยละ</th></tr>';
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$totalQ = array_sum(array_column($q['frequencies'], 'cnt'));
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foreach ($q['frequencies'] as $f) {
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$percent = $totalQ > 0 ? round(($f['cnt'] / $totalQ) * 100, 1) : 0;
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$html .= '<tr><td>' . htmlspecialchars($f['answer_value']) . '</td><td>' . $f['cnt'] . '</td><td>' . $percent . '%</td></tr>';
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}
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$html .= '</table>';
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}
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}
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}
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// Text responses
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foreach ($questions as $q) {
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if ($q['question_type'] === 'text' && !empty($q['text_responses'])) {
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$cleanText = preg_replace('/^\s*[\d๑-๙]+[\.\)\s\-:\x{00A0}]*\s*/u', '', $q['question_text']);
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$html .= '<p><strong>' . htmlspecialchars($cleanText) . '</strong></p>';
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foreach ($q['text_responses'] as $i => $text) {
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$html .= '<div class="text-response">' . ($i+1) . '. ' . htmlspecialchars($text) . '</div>';
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}
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}
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}
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return $html;
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}
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function exportPDF($data) {
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$html = generateHTML($data);
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$title = $data['survey']['title'] ?? 'survey_report';
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$filename = 'report_' . preg_replace('/[^a-zA-Z0-9ก-๙]/u', '_', $title) . '.pdf';
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// Use simple HTML-to-PDF approach
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header('Content-Type: text/html; charset=utf-8');
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echo '<!DOCTYPE html><html><head><meta charset="UTF-8">';
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echo '<title>' . htmlspecialchars($title) . '</title>';
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echo '<style>@media print { body { -webkit-print-color-adjust: exact; } }</style>';
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echo '<script>window.onload = function() { window.print(); }</script>';
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echo '</head><body>';
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echo $html;
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echo '</body></html>';
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}
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function exportWord($data) {
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$html = generateHTML($data);
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$title = $data['survey']['title'] ?? 'survey_report';
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$filename = 'report_' . preg_replace('/[^a-zA-Z0-9ก-๙]/u', '_', $title) . '.doc';
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header('Content-Type: application/vnd.ms-word');
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header('Content-Disposition: attachment; filename="' . $filename . '"');
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header('Cache-Control: max-age=0');
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echo '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40">';
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echo '<head><meta charset="UTF-8"><title>' . htmlspecialchars($title) . '</title></head>';
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echo '<body>';
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echo $html;
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echo '</body></html>';
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}
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