<?php

use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
use PhpOffice\PhpSpreadsheet\Style\Alignment;
use PhpOffice\PhpSpreadsheet\Style\Border;
use PhpOffice\PhpSpreadsheet\Style\Fill;

// Enable error reporting for debugging

$route->add('/export/excel/auto', function() {
    // Enable error reporting for debugging (disable or log to file in production)
    error_reporting(E_ALL);
    ini_set('display_errors', 1); // Should be 0 in production

    // For large reports, ensure sufficient execution time and memory.
    // These might need adjustment based on server configuration and report size.
    // ini_set('max_execution_time', 300); // e.g., 5 minutes
    // ini_set('memory_limit', '512M');    // e.g., 512 Megabytes

    // Check if request is POST
    if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
        die("Invalid request method. Only POST is allowed.");
    }

    // Get form data
    if (!isset($_POST['data'])) {
        die("No data received in data field");
    }

    // Decode JSON data
    $jsonData = json_decode($_POST['data'], true);
    
    if (json_last_error() !== JSON_ERROR_NONE) {
        die("Invalid JSON data: " . json_last_error_msg());
    }

    if (!$jsonData || !isset($jsonData['headers']) || !isset($jsonData['data'])) {
        die("Invalid data structure. Required fields missing.");
    }

    // Create new Spreadsheet
    $spreadsheet = new Spreadsheet();
    $sheet = $spreadsheet->getActiveSheet();

    // Set headers
    $headers = $jsonData['headers'];
    foreach ($headers as $colIndex => $header) {
        $sheet->setCellValueByColumnAndRow($colIndex + 1, 1, $header);
    }

    // Style headers
    $headerStyle = [
        'font' => [
            'bold' => true,
            'color' => ['rgb' => 'FFFFFF'],
        ],
        'fill' => [
            'fillType' => Fill::FILL_SOLID,
            'startColor' => ['rgb' => '4CAF50'],
        ],
        'alignment' => [
            'horizontal' => Alignment::HORIZONTAL_CENTER,
            'vertical' => Alignment::VERTICAL_CENTER,
        ],
        'borders' => [
            'allBorders' => [
                'borderStyle' => Border::BORDER_THIN,
            ],
        ],
    ];
    $sheet->getStyle('A1:' . $sheet->getHighestColumn() . '1')->applyFromArray($headerStyle);

    // Add data
    $rowIndex = 2;
    foreach ($jsonData['data'] as $row) {
        foreach ($headers as $colIndex => $header) {
            if (!isset($row[$header])) {
                continue; // Skip if header not found in row data
            }

            $cellValue = $row[$header]['value'];
            $cellType = $row[$header]['type'];
            
            // Set cell value based on type
            switch ($cellType) {
                case 'currency':
                    $sheet->setCellValueByColumnAndRow($colIndex + 1, $rowIndex, $cellValue);
                    $sheet->getStyleByColumnAndRow($colIndex + 1, $rowIndex)
                        ->getNumberFormat()
                        ->setFormatCode('"Rp"#,##0.00');
                    break;
                case 'date':
                    // Convert ISO date to dd-mm-yyyy format
                    if (is_string($cellValue) && strtotime($cellValue)) {
                        $date = new DateTime($cellValue);
                        $cellValue = $date->format('d-m-Y');
                    }
                    $sheet->setCellValueByColumnAndRow($colIndex + 1, $rowIndex, $cellValue);
                    $sheet->getStyleByColumnAndRow($colIndex + 1, $rowIndex)
                        ->getNumberFormat()
                        ->setFormatCode('dd-mm-yyyy');
                    break;
                case 'number':
                    $sheet->setCellValueByColumnAndRow($colIndex + 1, $rowIndex, $cellValue);
                    $sheet->getStyleByColumnAndRow($colIndex + 1, $rowIndex)
                        ->getNumberFormat()
                        ->setFormatCode('#,##0.00');
                    break;
                default:
                    $sheet->setCellValueByColumnAndRow($colIndex + 1, $rowIndex, $cellValue);
            }
        }
        $rowIndex++;
    }

    // Auto-size columns. Note: This can be performance-intensive for very large
    // datasets or many columns. If performance is an issue, consider setting
    // fixed column widths instead, e.g., $sheet->getColumnDimension('A')->setWidth(20);
    // Auto-size columns
    foreach (range('A', $sheet->getHighestColumn()) as $col) {
        $sheet->getColumnDimension($col)->setAutoSize(true);
    }

    // Set headers for download
    header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
    header('Content-Disposition: attachment;filename="Laporan.xlsx"');
    header('Cache-Control: max-age=0');

    // Save file to PHP output
    $writer = new Xlsx($spreadsheet);
    $writer->save('php://output');
    exit;
})
->use('vendor/autoload.php')
->use('module/db.php')
->use('module/perusahaan.php');