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<?php
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declare(strict_types=1);
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namespace OpenSpout\Reader\CSV;
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use OpenSpout\Common\Exception\IOException;
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use OpenSpout\Common\Helper\EncodingHelper;
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use OpenSpout\Reader\AbstractReader;
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/**
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 * @extends AbstractReader<SheetIterator>
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 */
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final class Reader extends AbstractReader
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{
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    /** @var resource Pointer to the file to be written */
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    private $filePointer;
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    /** @var SheetIterator To iterator over the CSV unique "sheet" */
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    private SheetIterator $sheetIterator;
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    private readonly Options $options;
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    private readonly EncodingHelper $encodingHelper;
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    public function __construct(
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        ?Options $options = null,
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        ?EncodingHelper $encodingHelper = null
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    ) {
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        $this->options = $options ?? new Options();
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        $this->encodingHelper = $encodingHelper ?? EncodingHelper::factory();
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    }
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    public function getSheetIterator(): SheetIterator
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    {
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        $this->ensureStreamOpened();
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        return $this->sheetIterator;
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    }
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    /**
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     * Returns whether stream wrappers are supported.
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     */
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    protected function doesSupportStreamWrapper(): bool
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    {
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        return true;
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    }
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    /**
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     * Opens the file at the given path to make it ready to be read.
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     * If setEncoding() was not called, it assumes that the file is encoded in UTF-8.
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     *
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     * @param string $filePath Path of the CSV file to be read
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     *
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     * @throws IOException
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     */
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    protected function openReader(string $filePath): void
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    {
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        $resource = fopen($filePath, 'r');
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        \assert(false !== $resource);
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        $this->filePointer = $resource;
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        $this->sheetIterator = new SheetIterator(
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            new Sheet(
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                new RowIterator(
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                    $this->filePointer,
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                    $this->options,
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                    $this->encodingHelper
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                )
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            )
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        );
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    }
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    /**
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     * Closes the reader. To be used after reading the file.
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     */
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    protected function closeReader(): void
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    {
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        fclose($this->filePointer);
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    }
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}