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<?php |
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namespace Sfneal\ViewExport\Pdf\Utils; |
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use Dompdf\Dompdf; |
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use Dompdf\Exception; |
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use Dompdf\Options; |
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use Illuminate\Contracts\View\View; |
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use Sfneal\Helpers\Strings\StringHelpers; |
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class PdfRenderer |
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{ |
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// todo: make dispatchable |
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/** |
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* @var Options |
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*/ |
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public $options; |
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/** |
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* @var Metadata |
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*/ |
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public $metadata; |
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/** |
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* @var Dompdf |
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*/ |
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private $pdf; |
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/** |
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* @var View|string |
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*/ |
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private $content; |
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/** |
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* PdfExporter constructor. |
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* |
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* - $content can be a View or HTML file contents |
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* |
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* @param View|string $content |
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* @param Options|null $options |
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* @param array|null $metadata |
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*/ |
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public function __construct($content, Options $options = null, array $metadata = null) |
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{ |
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// Declare PDF options (use DefaultOptions) if none provided |
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$this->options = $options ?? new DefaultOptions(); |
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// Instantiate Metadata |
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$this->metadata = new Metadata($metadata); |
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// Content of the PDF |
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$this->content = $content; |
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} |
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/** |
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* Load PDF content to the Dompdf instance and render the output. |
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* |
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* - storing output in a property avoids potentially calling expensive 'output()' method multiple times |
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* |
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* @return PdfExporter |
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* @throws Exception |
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*/ |
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public function render(): PdfExporter |
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{ |
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// Instantiate dompdf |
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$this->pdf = new Dompdf($this->options); |
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// Add metadata |
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$this->applyMetadata(); |
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// Load content |
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$this->loadContent(); |
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// Render the PDF |
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$this->pdf->render(); |
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// Return a PdfExporter |
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return new PdfExporter($this->pdf); |
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} |
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/** |
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* Add Metadata to the PDF. |
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* |
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* @return bool |
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*/ |
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private function applyMetadata(): bool |
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{ |
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// Add Metadata if the array isn't empty |
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if ($hasMetadata = ! empty($this->metadata->get())) { |
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foreach ($this->metadata->get() as $key => $value) { |
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$this->pdf->add_info($key, $value); |
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} |
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} |
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return $hasMetadata; |
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} |
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/** |
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* Load content into the Dompdf instance. |
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* |
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* @throws Exception |
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*/ |
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private function loadContent(): void |
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{ |
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// Create local HTML file path |
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$localHTML = StringHelpers::joinPaths($this->options->getRootDir(), uniqid().'.html'); |
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// Store View (or HTML) as HTML file within Dompdf root |
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touch($localHTML); |
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file_put_contents($localHTML, $this->content); |
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// Load HTML |
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$this->pdf->loadHtmlFile($localHTML); |
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// Remove temp HTML file |
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unlink($localHTML); |
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} |
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} |
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sfneal /
view-export
