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<?php declare(strict_types=1); |
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namespace Bigwhoop\Trumpet\Commands; |
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use Intervention\Image\Constraint; |
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use Intervention\Image\Image; |
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use Intervention\Image\ImageManager; |
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class ImageCommand implements Command |
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{ |
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const RETURN_TYPE_URL = 'url'; |
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const RETURN_TYPE_PATH = 'path'; |
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const RETURN_TYPE_DATA_URL = 'data-url'; |
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const RETURN_TYPE_DATA = 'data'; |
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/** @var ImageManager */ |
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private $imageManager; |
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/** @var CommandExecutionContext */ |
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private $executionContext; |
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/** @var string */ |
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private $returnType = self::RETURN_TYPE_URL; |
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public function __construct(ImageManager $manager, CommandExecutionContext $context) |
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{ |
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$this->imageManager = $manager; |
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$this->executionContext = $context; |
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} |
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public function setReturnType(string $type) |
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{ |
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$this->returnType = $type; |
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} |
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public function getToken(): string |
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{ |
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return 'image'; |
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} |
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public function execute(CommandParams $params, CommandExecutionContext $executionContext): string |
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{ |
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$fileName = $params->getFirstArgument(); |
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if (!$executionContext->hasFileInWorkingDirectory($fileName)) { |
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throw new ExecutionFailedException("File '$fileName' does not exist."); |
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} |
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$img = $this->imageManager->make($executionContext->getPathOfFileInWorkingDirectory($fileName)); |
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if (!$params->hasSecondArgument()) { |
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return $this->returnImage($img, $params); |
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} |
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list($width, $height) = $this->parseDimension($params->getSecondArgument()); |
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switch ($params->getThirdArgument()) { |
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case 'stretch': |
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$img->resize($width, $height); |
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break; |
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case 'fit': |
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$img->fit($width, $height); |
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break; |
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case 'crop': |
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$x = $this->filterIntOrNullArgument($params->getArgument(3)); |
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$y = $this->filterIntOrNullArgument($params->getArgument(4)); |
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$img->crop($width, $height, $x, $y); |
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break; |
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default: |
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$img->resize($width, $height, function (Constraint $constraint) { |
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$constraint->aspectRatio(); |
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}); |
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break; |
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} |
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return $this->returnImage($img, $params); |
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} |
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private function filterIntOrNullArgument(string $value): ?int |
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{ |
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$int = (int) $value; |
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if ($int < 1) { |
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$int = null; |
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} |
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return $int; |
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} |
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private function parseDimension(string $dimension): array |
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{ |
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$matches = []; |
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if (!preg_match('#(\d+)x(\d+)#', $dimension, $matches)) { |
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throw new ExecutionFailedException("Dimension argument be in format WIDTHxHEIGHT. For example 100x50, 0x50 or 100x0, but not 0x0."); |
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} |
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$width = $this->filterIntOrNullArgument($matches[1]); |
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$height = $this->filterIntOrNullArgument($matches[2]); |
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if ($width === null && $height === null) { |
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throw new ExecutionFailedException("Either the width or the height must be greater than zero."); |
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} |
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return [$width, $height]; |
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} |
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private function returnImage(Image $img, CommandParams $params): string |
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{ |
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switch ($this->returnType) { |
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case self::RETURN_TYPE_URL: |
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case self::RETURN_TYPE_PATH: |
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$tmpDir = $this->executionContext->ensureTempDirectory(); |
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$tmpFile = $tmpDir.'/'.md5(join("\n", $params->getArguments())).'.png'; |
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$img->encode('png')->save($tmpFile); |
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if ($this->returnType === self::RETURN_TYPE_PATH) { |
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return $tmpFile; |
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} |
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return '<img src="/_tmp/'.basename($tmpFile).'">'; |
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case self::RETURN_TYPE_DATA_URL: |
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return '->getEncoded().')'; |
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case self::RETURN_TYPE_DATA: |
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return $img->encode('png')->getEncoded(); |
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default: |
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throw new ExecutionFailedException("Invalid return type '{$this->returnType}' detected."); |
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} |
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} |
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} |
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bigwhoop /
trumpet
