<?php

namespace PhpOffice\PhpSpreadsheet;

use PhpOffice\PhpSpreadsheet\Reader\IReader;
use PhpOffice\PhpSpreadsheet\Shared\File;
use PhpOffice\PhpSpreadsheet\Writer\IWriter;

/**
 * Factory to create readers and writers easily.
 *
 * It is not required to use this class, but it should make it easier to read and write files.
 * Especially for reading files with an unknown format.
 */
abstract class IOFactory
{
    public const READER_XLSX = 'Xlsx';
    public const READER_XLS = 'Xls';
    public const READER_XML = 'Xml';
    public const READER_ODS = 'Ods';
    public const READER_SYLK = 'Slk';
    public const READER_SLK = 'Slk';
    public const READER_GNUMERIC = 'Gnumeric';
    public const READER_HTML = 'Html';
    public const READER_CSV = 'Csv';

    public const WRITER_XLSX = 'Xlsx';
    public const WRITER_XLS = 'Xls';
    public const WRITER_ODS = 'Ods';
    public const WRITER_CSV = 'Csv';
    public const WRITER_HTML = 'Html';

    /** @var string[] */
    private static $readers = [
        self::READER_XLSX => Reader\Xlsx::class,
        self::READER_XLS => Reader\Xls::class,
        self::READER_XML => Reader\Xml::class,
        self::READER_ODS => Reader\Ods::class,
        self::READER_SLK => Reader\Slk::class,
        self::READER_GNUMERIC => Reader\Gnumeric::class,
        self::READER_HTML => Reader\Html::class,
        self::READER_CSV => Reader\Csv::class,
    ];

    /** @var string[] */
    private static $writers = [
        self::WRITER_XLS => Writer\Xls::class,
        self::WRITER_XLSX => Writer\Xlsx::class,
        self::WRITER_ODS => Writer\Ods::class,
        self::WRITER_CSV => Writer\Csv::class,
        self::WRITER_HTML => Writer\Html::class,
        'Tcpdf' => Writer\Pdf\Tcpdf::class,
        'Dompdf' => Writer\Pdf\Dompdf::class,
        'Mpdf' => Writer\Pdf\Mpdf::class,
    ];

    /**
     * Create Writer\IWriter.
     */
    public static function createWriter(Spreadsheet $spreadsheet, string $writerType): IWriter
    {
        if (!isset(self::$writers[$writerType])) {
            throw new Writer\Exception("No writer found for type $writerType");
        }

        // Instantiate writer
        /** @var IWriter */
        $className = self::$writers[$writerType];

        return new $className($spreadsheet);
    }

    /**
     * Create IReader.
     */
    public static function createReader(string $readerType): IReader
    {
        if (!isset(self::$readers[$readerType])) {
            throw new Reader\Exception("No reader found for type $readerType");
        }

        // Instantiate reader
        /** @var IReader */
        $className = self::$readers[$readerType];

        return new $className();
    }

    /**
     * Loads Spreadsheet from file using automatic Reader\IReader resolution.
     *
     * @param string $filename The name of the spreadsheet file
     * @param int $flags the optional second parameter flags may be used to identify specific elements
     *                       that should be loaded, but which won't be loaded by default, using these values:
     *                            IReader::LOAD_WITH_CHARTS - Include any charts that are defined in the loaded file.
     *                            IReader::READ_DATA_ONLY - Read cell values only, not formatting or merge structure.
     *                            IReader::IGNORE_EMPTY_CELLS - Don't load empty cells into the model.
     * @param string[] $readers An array of Readers to use to identify the file type. By default, load() will try
     *                             all possible Readers until it finds a match; but this allows you to pass in a
     *                             list of Readers so it will only try the subset that you specify here.
     *                          Values in this list can be any of the constant values defined in the set
     *                                 IOFactory::READER_*.
     */
    public static function load(string $filename, int $flags = 0, ?array $readers = null): Spreadsheet
    {
        $reader = self::createReaderForFile($filename, $readers);

        return $reader->load($filename, $flags);
    }

    /**
     * Identify file type using automatic IReader resolution.
     */
    public static function identify(string $filename, ?array $readers = null): string
    {
        $reader = self::createReaderForFile($filename, $readers);
        $className = get_class($reader);
        $classType = explode('\\', $className);
        unset($reader);

        return array_pop($classType);
    }

    /**
     * Create Reader\IReader for file using automatic IReader resolution.
     *
     * @param string[] $readers An array of Readers to use to identify the file type. By default, load() will try
     *                             all possible Readers until it finds a match; but this allows you to pass in a
     *                             list of Readers so it will only try the subset that you specify here.
     *                          Values in this list can be any of the constant values defined in the set
     *                                 IOFactory::READER_*.
     */
    public static function createReaderForFile(string $filename, ?array $readers = null): IReader
    {
        File::assertFile($filename);

        $testReaders = self::$readers;
        if ($readers !== null) {
            $readers = array_map('strtoupper', $readers);
            $testReaders = array_filter(
                self::$readers,
                function (string $readerType) use ($readers) {
                    return in_array(strtoupper($readerType), $readers, true);
                },
                ARRAY_FILTER_USE_KEY
            );
        }

        // First, lucky guess by inspecting file extension
        $guessedReader = self::getReaderTypeFromExtension($filename);
        if (($guessedReader !== null) && array_key_exists($guessedReader, $testReaders)) {
            $reader = self::createReader($guessedReader);

            // Let's see if we are lucky
            if ($reader->canRead($filename)) {
                return $reader;
            }
        }

        // If we reach here then "lucky guess" didn't give any result
        // Try walking through all the options in self::$readers (or the selected subset)
        foreach ($testReaders as $readerType => $class) {
            //    Ignore our original guess, we know that won't work
            if ($readerType !== $guessedReader) {
                $reader = self::createReader($readerType);
                if ($reader->canRead($filename)) {
                    return $reader;
                }
            }
        }

        throw new Reader\Exception('Unable to identify a reader for this file');
    }

    /**
     * Guess a reader type from the file extension, if any.
     */
    private static function getReaderTypeFromExtension(string $filename): ?string
    {
        $pathinfo = pathinfo($filename);
        if (!isset($pathinfo['extension'])) {
            return null;
        }

        switch (strtolower($pathinfo['extension'])) {
            case 'xlsx': // Excel (OfficeOpenXML) Spreadsheet
            case 'xlsm': // Excel (OfficeOpenXML) Macro Spreadsheet (macros will be discarded)
            case 'xltx': // Excel (OfficeOpenXML) Template
            case 'xltm': // Excel (OfficeOpenXML) Macro Template (macros will be discarded)
                return 'Xlsx';
            case 'xls': // Excel (BIFF) Spreadsheet
            case 'xlt': // Excel (BIFF) Template
                return 'Xls';
            case 'ods': // Open/Libre Offic Calc
            case 'ots': // Open/Libre Offic Calc Template
                return 'Ods';
            case 'slk':
                return 'Slk';
            case 'xml': // Excel 2003 SpreadSheetML
                return 'Xml';
            case 'gnumeric':
                return 'Gnumeric';
            case 'htm':
            case 'html':
                return 'Html';
            case 'csv':
                // Do nothing
                // We must not try to use CSV reader since it loads
                // all files including Excel files etc.
                return null;
            default:
                return null;
        }
    }

    /**
     * Register a writer with its type and class name.
     */
    public static function registerWriter(string $writerType, string $writerClass): void
    {
        if (!is_a($writerClass, IWriter::class, true)) {
            throw new Writer\Exception('Registered writers must implement ' . IWriter::class);
        }

        self::$writers[$writerType] = $writerClass;
    }

    /**
     * Register a reader with its type and class name.
     */
    public static function registerReader(string $readerType, string $readerClass): void
    {
        if (!is_a($readerClass, IReader::class, true)) {
            throw new Reader\Exception('Registered readers must implement ' . IReader::class);
        }

        self::$readers[$readerType] = $readerClass;
    }
}

• [D] Calculation
• [D] Cell
• [D] Chart
• [D] Collection
• [D] Document
• [D] Helper
• [D] Reader
• [D] RichText
• [D] Shared
• [D] Style
• [D] Worksheet
• [D] Writer
• [F] CellReferenceHelper.php
  Delete
• [F] Comment.php
  Delete
• [F] DefinedName.php
  Delete
• [F] Exception.php
  Delete
• [F] HashTable.php
  Delete
• [F] IComparable.php
  Delete
• [F] IOFactory.php
  Delete
• [F] NamedFormula.php
  Delete
• [F] NamedRange.php
  Delete
• [F] ReferenceHelper.php
  Delete
• [F] Settings.php
  Delete
• [F] Spreadsheet.php
  Delete
• [F] Theme.php
  Delete

About Section

About NFC Pay: Our Story and Mission

NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.

• Simplifying Payments, One Tap at a Time.
• Reinventing Your Wallet for Modern Convenience.
• Smart Payments for a Effortless Lifestyle.
• Experience the Ease of Tap and Pay.
• Innovative Solutions for Your Daily Transactions.

FAQ Section

Frequently Asked Questions About NFC Pay

Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.

How do I register for NFC Pay?

Download the app and sign up using your email or phone number, then complete the verification process.

Is my payment information secure?

Yes, we use advanced encryption and security protocols to protect your payment details.

Can I add multiple cards to my NFC Pay wallet?

Absolutely, you can link multiple debit or credit cards to your wallet.

How do I transfer money to another user?

Go to the transfer section, select the recipient, enter the amount, and authorize the transfer.

What should I do if I forget my PIN?

Use the “Forgot PIN” feature in the app to reset it following the provided instructions.

How can I activate my merchant account?

Sign up for a merchant account through the app and follow the setup instructions to start accepting payments.

Can I track my payment status?

Yes, you can view and track your payment status in the account dashboard