Attachment.php

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<?php

namespace Elgg\Email;

use Laminas\Mime\Part;
use Laminas\Mime\Mime;

class Attachment extends Part {
    
    public function __construct($content = '') {
        parent::__construct($content);
        
        $this->disposition = 'attachment';
        $this->setId(uniqid('attachment'));
    }
    
    public static function factory($options) {
        
        if ($options instanceof \ElggFile) {
            return self::fromElggFile($options);
        }
        
        if (!is_array($options)) {
            elgg_log(__METHOD__ . ': $options needs to be an array', \Psr\Log\LogLevel::ERROR);
            return false;
        }
        
        if (!isset($options['content']) && !isset($options['filepath'])) {
            elgg_log(__METHOD__ . ': $options "content" or "filepath" is required', \Psr\Log\LogLevel::ERROR);
            return false;
        }
        
        $content = elgg_extract('content', $options);
        unset($options['content']);
        if (!isset($content)) {
            $filepath = elgg_extract('filepath', $options);
            if (empty($filepath) || !is_file($filepath)) {
                elgg_log(__METHOD__ . ': $options[filepath] didn\'t result in a valid file', \Psr\Log\LogLevel::ERROR);
                return false;
            }
            
            $content = file_get_contents($filepath);
            
            $options['encoding'] = Mime::ENCODING_BASE64;
            
            if (!isset($options['filename'])) {
                $options['filename'] = basename($filepath);
            }
            
            if (!isset($options['type'])) {
                $options['type'] = _elgg_services()->mimetype->getMimeType($filepath);
            }
        }
        
        unset($options['filepath']);
        
        $attachment = new self($content);
        
        foreach ($options as $key => $value) {
            $attachment->$key = $value;
        }
        
        return $attachment;
    }
    
    public static function fromElggFile(\ElggFile $file) {
        
        if (!$file->exists()) {
            return false;
        }
        
        $options = [
            'content' => $file->grabFile(),
            'type' => $file->getMimeType(),
            'filename' => basename($file->getFilename()),
            'encoding' => Mime::ENCODING_BASE64,
        ];
        
        return self::factory($options);
    }
}