Initial ASK question data

tools/validate_qaml.php

@@ -0,0 +1,90 @@
+<?php
+
+declare(strict_types=1);
+
+$file = $argv[1] ?? 'pytania.txt';
+$baseDir = dirname(__DIR__);
+$path = $baseDir . '/' . $file;
+
+if (!is_file($path)) {
+    fwrite(STDERR, "File not found: {$file}\n");
+    exit(1);
+}
+
+$lines = file($path, FILE_IGNORE_NEW_LINES);
+$errors = [];
+$question = null;
+$questionLine = 0;
+$answers = 0;
+$questionCount = 0;
+
+$finishQuestion = static function () use (&$errors, &$question, &$questionLine, &$answers, &$questionCount): void {
+    if ($question === null) {
+        return;
+    }
+
+    if ($answers === 0) {
+        $errors[] = "Line {$questionLine}: question has no answers.";
+    }
+
+    $questionCount++;
+    $question = null;
+    $questionLine = 0;
+    $answers = 0;
+};
+
+foreach ($lines as $i => $rawLine) {
+    $lineNo = $i + 1;
+    $line = trim($rawLine);
+
+    if ($line === '' || str_starts_with($line, '//')) {
+        continue;
+    }
+
+    if (!str_starts_with($line, '-')) {
+        $finishQuestion();
+        $question = $line;
+        $questionLine = $lineNo;
+        continue;
+    }
+
+    if ($question === null) {
+        $errors[] = "Line {$lineNo}: answer appears before any question.";
+        continue;
+    }
+
+    if (str_starts_with($line, '-|')) {
+        $answer = trim(substr($line, 2));
+    } else {
+        $answer = trim(substr($line, 1));
+    }
+
+    if ($answer === '') {
+        $errors[] = "Line {$lineNo}: answer is empty.";
+    }
+
+    $answers++;
+}
+
+$finishQuestion();
+
+$content = file_get_contents($path) ?: '';
+preg_match_all('/<img\s+[^>]*src=["\']([^"\']+)["\'][^>]*>/i', $content, $matches);
+foreach ($matches[1] ?? [] as $src) {
+    if (str_starts_with($src, 'img/') && !is_file($baseDir . '/' . $src)) {
+        $errors[] = "Missing image referenced from pytania.txt: {$src}";
+    }
+}
+
+if ($questionCount === 0) {
+    $errors[] = 'No questions found.';
+}
+
+if ($errors !== []) {
+    foreach ($errors as $error) {
+        fwrite(STDERR, $error . PHP_EOL);
+    }
+    exit(1);
+}
+
+echo "OK: {$questionCount} questions validated.\n";