Sindbad~EG File Manager

<?php
require_once '../config/config.php';

// Verify access code
$access_code = $_GET['access_code'] ?? '';

if (empty($access_code)) {
    die('Access code required');
}

$db = new Database();
$conn = $db->getConnection();

// Verify special code
$query = "SELECT * FROM special_codes WHERE code = ? AND is_active = 1 
          AND (expires_at IS NULL OR expires_at > NOW())";
$stmt = $conn->prepare($query);
$stmt->execute([$access_code]);
$code_info = $stmt->fetch();

if (!$code_info) {
    die('Invalid access code');
}

$format = $_GET['format'] ?? 'csv';
$type = $_GET['type'] ?? 'summary';
$program = $_GET['program'] ?? '';
$district = $_GET['district'] ?? '';
$officer_type = $_GET['officer_type'] ?? '';
$group_by = $_GET['group_by'] ?? 'district';
$from_date = $_GET['from_date'] ?? '';
$to_date = $_GET['to_date'] ?? '';

// Build WHERE clause
$where_conditions = [];
$params = [];

if (!empty($program)) {
    $where_conditions[] = "ar.program_id = ?";
    $params[] = $program;
}

if (!empty($district)) {
    $where_conditions[] = "ar.district_id = ?";
    $params[] = $district;
}

if (!empty($officer_type)) {
    $where_conditions[] = "ar.officer_type = ?";
    $params[] = $officer_type;
}

if (!empty($from_date)) {
    $where_conditions[] = "DATE(ar.submitted_at) >= ?";
    $params[] = $from_date;
}

if (!empty($to_date)) {
    $where_conditions[] = "DATE(ar.submitted_at) <= ?";
    $params[] = $to_date;
}

$where_clause = !empty($where_conditions) ? 'WHERE ' . implode(' AND ', $where_conditions) : '';

if ($type === 'summary') {
    // Summary export
    $query = "SELECT 
                  p.name as program_name,
                  COUNT(ar.id) as total_attendees,
                  COUNT(DISTINCT ar.district_id) as districts,
                  COUNT(CASE WHEN ar.officer_type IS NOT NULL THEN 1 END) as officer_count,
                  COUNT(CASE WHEN ar.officer_type = 'Pastor' THEN 1 END) as pastor_count,
                  COUNT(CASE WHEN ar.officer_type = 'Elder' THEN 1 END) as elder_count
              FROM attendance_records ar 
              JOIN programs p ON ar.program_id = p.id 
              $where_clause
              GROUP BY ar.program_id, p.name
              ORDER BY total_attendees DESC";
} elseif ($type === 'extra') {
    // Extra export with GPS data
    $group_field = '';
    switch ($group_by) {
        case 'officer_type':
            $group_field = 'ar.officer_type';
            break;
        case 'gps_location':
            $group_field = 'CONCAT(ROUND(ar.latitude, 3), ",", ROUND(ar.longitude, 3))';
            break;
        default: // district
            $group_field = 'ld.name';
            break;
    }
    
    $query = "SELECT 
                  ar.full_name,
                  ar.email,
                  ar.telephone,
                  ar.officer_type,
                  p.name as program_name,
                  ld.name as district_name,
                  la.name as assembly_name,
                  CASE 
                    WHEN ar.latitude IS NOT NULL AND ar.longitude IS NOT NULL 
                    THEN CONCAT(ar.latitude, ', ', ar.longitude)
                    ELSE 'Not available'
                  END as gps_coordinates,
                  CASE 
                    WHEN ar.location_accuracy IS NOT NULL 
                    THEN CONCAT(ar.location_accuracy, 'm')
                    ELSE 'Unknown'
                  END as gps_accuracy,
                  ar.location_address,
                  DATE(ar.submitted_at) as attendance_date,
                  TIME(ar.submitted_at) as attendance_time,
                  $group_field as group_value
              FROM attendance_records ar 
              JOIN programs p ON ar.program_id = p.id 
              LEFT JOIN locations ld ON ar.district_id = ld.id 
              LEFT JOIN locations la ON ar.assembly_id = la.id 
              $where_clause
              ORDER BY group_value, ar.full_name";
} elseif ($type === 'districts') {
    // Districts export with grouped data
    $group_field = '';
    switch ($group_by) {
        case 'officer_type':
            $group_field = 'ar.officer_type';
            break;
        default: // district
            $group_field = 'ld.name';
            break;
    }
    
    $query = "SELECT 
                  $group_field as group_label,
                  COUNT(ar.id) as count,
                  GROUP_CONCAT(DISTINCT ar.full_name ORDER BY ar.full_name SEPARATOR ', ') as names,
                  GROUP_CONCAT(DISTINCT ar.email ORDER BY ar.email SEPARATOR ', ') as emails,
                  GROUP_CONCAT(DISTINCT ar.telephone ORDER BY ar.telephone SEPARATOR ', ') as phones
              FROM attendance_records ar 
              JOIN programs p ON ar.program_id = p.id 
              LEFT JOIN locations ld ON ar.district_id = ld.id 
              LEFT JOIN locations la ON ar.assembly_id = la.id 
              $where_clause
              GROUP BY $group_field
              ORDER BY count DESC, group_label ASC";
} else {
    // Details export
    $query = "SELECT 
                  ar.full_name,
                  ar.email,
                  ar.telephone,
                  ar.officer_type,
                  p.name as program_name,
                  ld.name as district_name,
                  la.name as assembly_name,
                  DATE(ar.submitted_at) as attendance_date,
                  TIME(ar.submitted_at) as attendance_time,
                  ar.tracking_code
              FROM attendance_records ar 
              JOIN programs p ON ar.program_id = p.id 
              LEFT JOIN locations ld ON ar.district_id = ld.id 
              LEFT JOIN locations la ON ar.assembly_id = la.id 
              $where_clause
              ORDER BY ar.submitted_at DESC";
}

$stmt = $conn->prepare($query);
$stmt->execute($params);
$data = $stmt->fetchAll();

$filename = 'special_attendance_' . $type . '_' . date('Y-m-d_H-i-s');

if ($format === 'csv') {
    header('Content-Type: text/csv');
    header('Content-Disposition: attachment; filename="' . $filename . '.csv"');
    
    $output = fopen('php://output', 'w');
    
    if (!empty($data)) {
        if ($type === 'extra') {
            // Handle grouped export for extra reports
            $headers = array_keys($data[0]);
            fputcsv($output, $headers);
            
            $currentGroup = null;
            $groupCounts = [];
            
            // Count records per group
            foreach ($data as $row) {
                $groupValue = $row['group_value'] ?: 'Not Specified';
                $groupCounts[$groupValue] = ($groupCounts[$groupValue] ?? 0) + 1;
            }
            
            foreach ($data as $row) {
                // Add group header when group changes
                if ($row['group_value'] !== $currentGroup) {
                    $currentGroup = $row['group_value'];
                    $groupLabel = '';
                    $groupCount = $groupCounts[$currentGroup ?: 'Not Specified'];
                    
                    switch ($group_by) {
                        case 'officer_type':
                            $groupLabel = 'Officer Type: ' . ($currentGroup ?: 'Not Specified');
                            break;
                        case 'gps_location':
                            $groupLabel = 'GPS Location: ' . ($currentGroup ?: 'No GPS Data');
                            break;
                        default:
                            $groupLabel = 'District: ' . ($currentGroup ?: 'Not Specified');
                            break;
                    }
                    
                    // Write group header row
                    $groupRow = array_fill(0, count($headers), '');
                    $groupRow[0] = $groupLabel . ' (' . $groupCount . ' records)';
                    fputcsv($output, $groupRow);
                }
                
                // Write data row
                fputcsv($output, $row);
            }
        } else {
            // Regular export for summary and details
            fputcsv($output, array_keys($data[0]));
            foreach ($data as $row) {
                fputcsv($output, $row);
            }
        }
    }
    
    fclose($output);
    
} elseif ($format === 'excel') {
    header('Content-Type: application/vnd.ms-excel');
    header('Content-Disposition: attachment; filename="' . $filename . '.xls"');
    
    echo '<table border="1">';
    
    if (!empty($data)) {
        if ($type === 'extra') {
            // Handle grouped export for extra reports
            $headers = array_keys($data[0]);
            
            // Write headers
            echo '<tr>';
            foreach ($headers as $header) {
                echo '<th>' . htmlspecialchars(ucwords(str_replace('_', ' ', $header))) . '</th>';
            }
            echo '</tr>';
            
            $currentGroup = null;
            $groupCounts = [];
            
            // Count records per group
            foreach ($data as $row) {
                $groupValue = $row['group_value'] ?: 'Not Specified';
                $groupCounts[$groupValue] = ($groupCounts[$groupValue] ?? 0) + 1;
            }
            
            foreach ($data as $row) {
                // Add group header when group changes
                if ($row['group_value'] !== $currentGroup) {
                    $currentGroup = $row['group_value'];
                    $groupLabel = '';
                    $groupCount = $groupCounts[$currentGroup ?: 'Not Specified'];
                    
                    switch ($group_by) {
                        case 'officer_type':
                            $groupLabel = 'Officer Type: ' . ($currentGroup ?: 'Not Specified');
                            break;
                        case 'gps_location':
                            $groupLabel = 'GPS Location: ' . ($currentGroup ?: 'No GPS Data');
                            break;
                        default:
                            $groupLabel = 'District: ' . ($currentGroup ?: 'Not Specified');
                            break;
                    }
                    
                    // Write group header row
                    echo '<tr style="background-color: #dbeafe; font-weight: bold;">';
                    echo '<td colspan="' . count($headers) . '">' . htmlspecialchars($groupLabel . ' (' . $groupCount . ' records)') . '</td>';
                    echo '</tr>';
                }
                
                // Write data row
                echo '<tr>';
                foreach ($row as $cell) {
                    echo '<td>' . htmlspecialchars($cell ?? '') . '</td>';
                }
                echo '</tr>';
            }
        } else {
            // Regular export for summary and details
            echo '<tr>';
            foreach (array_keys($data[0]) as $header) {
                echo '<th>' . htmlspecialchars(ucwords(str_replace('_', ' ', $header))) . '</th>';
            }
            echo '</tr>';
            
            foreach ($data as $row) {
                echo '<tr>';
                foreach ($row as $cell) {
                    echo '<td>' . htmlspecialchars($cell ?? '') . '</td>';
                }
                echo '</tr>';
            }
        }
    }
    
    echo '</table>';
    
} elseif ($format === 'pdf') {
    header('Content-Type: text/html');
    
    echo '<!DOCTYPE html>
    <html>
    <head>
        <title>Special Attendance Report</title>
        <style>
            body { font-family: Arial, sans-serif; margin: 20px; }
            table { width: 100%; border-collapse: collapse; margin-top: 20px; }
            th, td { border: 1px solid #ddd; padding: 8px; text-align: left; font-size: 12px; }
            th { background-color: #f2f2f2; font-weight: bold; }
            .header { text-align: center; margin-bottom: 20px; }
            .group-header { background-color: #dbeafe; font-weight: bold; color: #1e40af; }
            @media print {
                body { margin: 0; }
                .no-print { display: none; }
            }
        </style>
    </head>
    <body>
        <div class="header">
            <h2>Special Attendance Report - ' . ucfirst($type) . '</h2>
            <p>Generated on: ' . date('F j, Y g:i A') . '</p>
        </div>
        
        <table>';
    
    if (!empty($data)) {
        if ($type === 'extra') {
            // Handle grouped export for extra reports
            $headers = array_keys($data[0]);
            
            // Write headers
            echo '<tr>';
            foreach ($headers as $header) {
                echo '<th>' . htmlspecialchars(ucwords(str_replace('_', ' ', $header))) . '</th>';
            }
            echo '</tr>';
            
            $currentGroup = null;
            $groupCounts = [];
            
            // Count records per group
            foreach ($data as $row) {
                $groupValue = $row['group_value'] ?: 'Not Specified';
                $groupCounts[$groupValue] = ($groupCounts[$groupValue] ?? 0) + 1;
            }
            
            foreach ($data as $row) {
                // Add group header when group changes
                if ($row['group_value'] !== $currentGroup) {
                    $currentGroup = $row['group_value'];
                    $groupLabel = '';
                    $groupCount = $groupCounts[$currentGroup ?: 'Not Specified'];
                    
                    switch ($group_by) {
                        case 'officer_type':
                            $groupLabel = 'Officer Type: ' . ($currentGroup ?: 'Not Specified');
                            break;
                        case 'gps_location':
                            $groupLabel = 'GPS Location: ' . ($currentGroup ?: 'No GPS Data');
                            break;
                        default:
                            $groupLabel = 'District: ' . ($currentGroup ?: 'Not Specified');
                            break;
                    }
                    
                    // Write group header row
                    echo '<tr class="group-header">';
                    echo '<td colspan="' . count($headers) . '">' . htmlspecialchars($groupLabel . ' (' . $groupCount . ' records)') . '</td>';
                    echo '</tr>';
                }
                
                // Write data row
                echo '<tr>';
                foreach ($row as $cell) {
                    echo '<td>' . htmlspecialchars($cell ?? '') . '</td>';
                }
                echo '</tr>';
            }
        } else {
            // Regular export for summary and details
            echo '<tr>';
            foreach (array_keys($data[0]) as $header) {
                echo '<th>' . htmlspecialchars(ucwords(str_replace('_', ' ', $header))) . '</th>';
            }
            echo '</tr>';
            
            foreach ($data as $row) {
                echo '<tr>';
                foreach ($row as $cell) {
                    echo '<td>' . htmlspecialchars($cell ?? '') . '</td>';
                }
                echo '</tr>';
            }
        }
    }
    
    echo '</table>
        <script>
            setTimeout(function() {
                window.print();
            }, 1000);
        </script>
    </body>
    </html>';
}
?>