<?php
// Database connection
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "popularcomputer";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

echo "<h2>Checking Exam Questions Data</h2>";

// Check if exam_questions table has data
$queryCount = "SELECT COUNT(*) as total FROM exam_questions";
$result = $conn->query($queryCount);
$row = $result->fetch_assoc();
$totalQuestions = $row['total'];

echo "<p>Total questions in the database: <strong>" . $totalQuestions . "</strong></p>";

// Check questions per exam
$queryExams = "SELECT es.id, es.title, COUNT(eq.id) as question_count 
               FROM exam_schedules es
               LEFT JOIN exam_questions eq ON es.id = eq.exam_id
               GROUP BY es.id
               ORDER BY es.id";
               
$result = $conn->query($queryExams);

echo "<h3>Questions per Exam:</h3>";
echo "<table border='1'>";
echo "<tr><th>Exam ID</th><th>Exam Title</th><th>Question Count</th></tr>";

if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "<tr>";
        echo "<td>" . $row['id'] . "</td>";
        echo "<td>" . $row['title'] . "</td>";
        echo "<td>" . $row['question_count'] . "</td>";
        echo "</tr>";
    }
} else {
    echo "<tr><td colspan='3'>No exams found</td></tr>";
}

echo "</table>";

// Check sample exam questions if they exist
if ($totalQuestions > 0) {
    $querySample = "SELECT * FROM exam_questions LIMIT 5";
    $result = $conn->query($querySample);
    
    echo "<h3>Sample Questions:</h3>";
    echo "<table border='1'>";
    echo "<tr><th>ID</th><th>Exam ID</th><th>Question Text</th><th>Question Type</th></tr>";
    
    while($row = $result->fetch_assoc()) {
        echo "<tr>";
        echo "<td>" . $row['id'] . "</td>";
        echo "<td>" . $row['exam_id'] . "</td>";
        echo "<td>" . htmlspecialchars($row['question_text']) . "</td>";
        echo "<td>" . $row['question_type'] . "</td>";
        echo "</tr>";
    }
    
    echo "</table>";
}

// Add sample questions if needed
echo "<h3>Add Sample Questions:</h3>";
echo "<form method='post'>";
echo "<p>If you want to add sample questions to an exam, select the exam:</p>";

$queryExamList = "SELECT id, title FROM exam_schedules ORDER BY id";
$result = $conn->query($queryExamList);

echo "<select name='exam_id'>";
while($row = $result->fetch_assoc()) {
    echo "<option value='" . $row['id'] . "'>" . $row['title'] . " (ID: " . $row['id'] . ")</option>";
}
echo "</select>";
echo "<input type='submit' name='add_questions' value='Add Sample Questions'>";
echo "</form>";

// Process form submission
if (isset($_POST['add_questions'])) {
    $examId = intval($_POST['exam_id']);
    
    // Add 5 sample questions
    for ($i = 1; $i <= 5; $i++) {
        $question = "Sample Question $i for Exam $examId";
        $option1 = "Option 1 for question $i";
        $option2 = "Option 2 for question $i";
        $option3 = "Option 3 for question $i";
        $option4 = "Option 4 for question $i";
        $correctOption = rand(1, 4);
        
        $stmt = $conn->prepare("INSERT INTO exam_questions (exam_id, question_text, question_type, option1, option2, option3, option4, correct_option, mark, question_order) 
                                VALUES (?, ?, 'mcq', ?, ?, ?, ?, ?, 1, ?)");
        $stmt->bind_param("isssssii", $examId, $question, $option1, $option2, $option3, $option4, $correctOption, $i);
        $stmt->execute();
    }
    
    echo "<p style='color:green'>5 sample questions have been added to Exam ID $examId.</p>";
    echo "<p><a href='check_exam_questions.php'>Refresh to see updated question count</a></p>";
}

// Close connection
$conn->close();
?>