<?php 
ob_start();
require_once('tcpdf/tcpdf.php');
require_once('db_connection.php');

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['report_class'])) {
    $class = $_POST['report_class'];
    $term = $_POST['report_term'] ?? 'N/A';
    $year = $_POST['report_year'] ?? 'N/A';

    $stmt = $pdo->prepare("SELECT * FROM midterm_results WHERE CLASS = ? AND TERM = ? AND YEAR = ? ORDER BY DIVISION ASC");
$stmt->execute([$class, $term, $year]);
    $students = $stmt->fetchAll(PDO::FETCH_ASSOC);

    if (!$students) {
        ob_end_clean();
        die('No Reports found for this class.');
    }

    $pdf = new TCPDF('P', PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
    $pdf->SetCreator('Luzira COU Primary School');
    $pdf->SetAuthor('Luzira COU Primary School');
    $pdf->SetTitle("Class Report - $class");
    $pdf->setPrintHeader(false);
    $pdf->setPrintFooter(false);
    $pdf->SetMargins(5, 4, 5);
    $pdf->SetAutoPageBreak(TRUE, 10);
    $pdf->SetFont('helvetica', '', 10);

    $commentsMap = [
        'MTC' => [[0, 39, 'IMPROVE'], [40, 54, 'TRIED'], [55, 69, 'FAIR'], [70, 89, 'VGOOD'], [90, 100, 'EXCELLENT']],
        'ENG' => [[0, 39, 'IMPROVE'], [40, 54, 'TRIED'], [55, 69, 'FAIR'], [70, 89, 'VGOOD'], [90, 100, 'EXCELLENT']],
        'SST' => [[0, 39, 'IMPROVE'], [40, 54, 'TRIED'], [55, 69, 'FAIR'], [70, 89, 'VGOOD'], [90, 100, 'EXCELLENT']],
        'SCI' => [[0, 39, 'IMPROVE'], [40, 54, 'TRIED'], [55, 69, 'FAIR'], [70, 89, 'VGOOD'], [90, 100, 'EXCELLENT']]
    ];

    $initials = [
        'P1' => ['MTC' => 'KA', 'ENG' => 'MA', 'SST' => 'JJ', 'SCI' => 'LL'],
        'P2' => ['MTC' => 'KK', 'ENG' => 'HH', 'SST' => 'QQ', 'SCI' => 'DD'],
        'P3' => ['MTC' => 'MN', 'ENG' => 'PA', 'SST' => 'RR', 'SCI' => 'EE'],
        'P4' => ['MTC' => 'ZA', 'ENG' => 'ZA', 'SST' => 'ZA', 'SCI' => 'ZA'],
        'P5' => ['MTC' => 'ZA', 'ENG' => 'ZA', 'SST' => 'ZA', 'SCI' => 'ZA'],
        'P6' => ['MTC' => 'ZA', 'ENG' => 'ZA', 'SST' => 'ZA', 'SCI' => 'ZA'],
        'P7' => ['MTC' => 'ZA', 'ENG' => 'ZA', 'SST' => 'ZA', 'SCI' => 'ZA']
    ];

    function getComment($subject, $mark, $commentsMap) {
        foreach ($commentsMap[$subject] as $range) {
            if ($mark >= $range[0] && $mark <= $range[1]) return $range[2];
        }
        return '';
    }

    foreach ($students as $student) {
        $pdf->AddPage();
        $pdf->Rect(5, 5, $pdf->getPageWidth() - 10, $pdf->getPageHeight() - 10);

        $pdf->Image('logo.png', 7, 5, 20);
        $pdf->SetFont('helvetica', 'B', 16);
        $pdf->Cell(0, 10, 'LUZIRA CHURCH OF UGANDA PRIMARY SCHOOL', 0, 1, 'C');
        $pdf->SetFont('helvetica', 'B', 12);
        $pdf->Cell(0, 5, "P.O.BOX 20061, KAMPALA - Uganda", 0, 1, 'C');
        $pdf->Cell(0, 5, "STUDENT'S TERMLY PROGRESSIVE REPORT - $term $year", 0, 1, 'C');

        $student_id = $student['STUDENT_ID'] ?? 'N/A';
$student_name = $student['STUDENT_NAME'] ?? 'N/A';
$student_class = $student['CLASS'] ?? 'N/A';
$student_sex = $student['SEX'] ?? 'N/A';
$student_position = $student['POSITION'] ?? 'N/A';

$pdf->writeHTML("<div style='background-color:#dbe4f3; padding:5px; font-weight:bold; font-size:12pt; color:#003366;'>Pupil's Details</div>", true, false, false, false, '');
$pdf->writeHTML("<div style='line-height:1.5; font-size:10pt; padding-left:5px; padding-top:4px;'>
<strong>ID:</strong> $student_id<br>
<strong>Name:</strong> $student_name<br>
<strong>Class:</strong> $student_class<br>
<strong>Sex:</strong> $student_sex<br>
</div>", true, false, false, false, '');

        $stmtMid = $pdo->prepare("SELECT * FROM midterm_results WHERE STUDENT_ID = ? AND CLASS = ? AND TERM = ? AND YEAR = ?");
$stmtMid->execute([$student['STUDENT_ID'], $student['CLASS'], $term, $year]);
        $midterm = $stmtMid->fetch(PDO::FETCH_ASSOC);
        // define midterm totals
$midterm_total = $midterm['TOTAL_MARKS'] ?? '';
$midterm_agg   = $midterm['TOTAL_AGG'] ?? '';
$midterm_div   = $midterm['DIVISION'] ?? '';

        if ($midterm) {
            $pdf->writeHTML('<h3 style="color:#007BFF;">MIDTERM RESULTS</h3>', true, false, false, false, '');
            $midtermTable = '<table border="1" cellpadding="4"><thead><tr style="background-color:#eee;"><th>LEARNING AREA</th><th>MARKS OBTAINED</th><th>OUT OF</th><th>AGG</th><th>TEACHER\'S COMMENT</th><th>INITIAL</th></tr></thead><tbody>';
            foreach ($commentsMap as $code => $ranges) {
                $mark = $midterm[$code] ?? 0;
                $agg = $midterm[$code.'_AGG'] ?? '';
                $comment = getComment($code, $mark, $commentsMap);
                $initial = $initials[$class][$code] ?? '';
                $midtermTable .= "<tr><td>$code</td><td>$mark</td><td>100</td><td>$agg</td><td>$comment</td><td>$initial</td></tr>";
            }
           $midtermTable .= "<tr style='background-color:#f0f0f0; font-weight:bold; font-family:cursive;'> 
    <td style='border:1px dashed black;'>TOTAL MARKS</td>
    <td style='border:1px dashed black;'>$midterm_total</td>
    <td style='border:1px dashed black;'>TOTAL AGG</td>
    <td style='border:1px dashed black;'>$midterm_agg</td>
    <td style='border:1px dashed black;'>DIVISION</td>
    <td style='border:1px dashed black;'>$midterm_div</td>
</tr></tbody></table>";
            $pdf->writeHTML($midtermTable, true, false, false, false, '');
        }

        $pdf->writeHTML("<strong>Class Teacher's Comment:</strong> " . ($student['REMARKS'] ?? ''), true, false, false, false, '');

        $pdf->Ln(1);
        $pdf->SetFont('helvetica', 'B', 12);
        $pdf->writeHTML('<strong>Requirements</strong>', true, false, false, false, '');
        $requirementsTable = '<table border="1" cellpadding="2"><tr><th width="65%">Item</th><th width="35%">Status</th></tr><tr><td>PARENTS CONTRIBUTION</td><td>Paid at Bank with Pay Code</td></tr><tr><td>A REAM OF DOUBLE A PAPER</td><td>Provided by parent</td></tr><tr><td>4 ROLLS OF TOILET PAPER</td><td>Provided by parent</td></tr></table>';
        $pdf->writeHTML($requirementsTable, true, false, false, false, '');

        $div = $student['DIVISION'];
        if ($div == '1') {
    $ht_comment = 'Excellent performance. Keep it up.';
} elseif ($div == '2') {
    $ht_comment = 'Good work. Aim higher.';
} elseif ($div == '3') {
    $ht_comment = 'Fair performance. Needs improvement.';
} elseif ($div == '4' || $div == 'U') {
    $ht_comment = 'Work harder next time.';
} else {
    $ht_comment = 'Avoid missing exams.';
}

       $pdf->writeHTML('<strong>Headteacher\'s Comment:</strong> ' . $ht_comment, true, false, false, false, '');

        $yBefore = $pdf->GetY();
        $pdf->Image('signature.png', $pdf->GetX(), $yBefore, 20);
        $pdf->SetY($yBefore + 20);
        $pdf->Cell(20, 3, 'Headteacher', 0, 1, 'L');

        $pdf->Ln(1);
       $pdf->SetFont('', 'BI');                     // BOLD Italic
$pdf->SetTextColor(255, 255, 255);         // White text
$pdf->SetFillColor(0, 0, 0);               // Black background
$pdf->Cell(0, 6, 'Disclaimer: These results can be verified via our website https://luziracouprimaryschool.com/', 0, 1, 'R', true);
$pdf->SetTextColor(0, 0, 0);                // Reset text color to black
$pdf->SetFont('', '');                      // Reset font style
    }


    ob_end_clean();
    $pdf->Output("Class_Report_$class.pdf", 'I');
    exit;
}
?>
