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<?php
/**
* Zalo © 2019
*
*/
namespace Zalo\Http;
use Zalo\FileUpload\ZaloFile;
/**
* Class RequestBodyMultipartt
*
* Some things copied from Guzzle
*
* @package Zalo
*
*/
class RequestBodyMultipart implements RequestBodyInterface
{
/**
* @var string The boundary.
*/
private $boundary;
/**
* @var array The parameters to send with this request.
*/
private $params;
/**
* @var array The files to send with this request.
*/
private $files = [];
/**
* @param array $params The parameters to send with this request.
* @param array $files The files to send with this request.
* @param string $boundary Provide a specific boundary.
*/
public function __construct(array $params = [], array $files = [], $boundary = null)
{
$this->params = $params;
$this->files = $files;
$this->boundary = $boundary ?: uniqid();
}
/**
* @inheritdoc
*/
public function getBody()
{
$body = '';
// Compile normal params
$params = $this->getNestedParams($this->params);
foreach ($params as $k => $v) {
$body .= $this->getParamString($k, $v);
}
// Compile files
foreach ($this->files as $k => $v) {
$body .= $this->getFileString($k, $v);
}
// Peace out
$body .= "--{$this->boundary}--\r\n";
return $body;
}
/**
* Get the boundary
*
* @return string
*/
public function getBoundary()
{
return $this->boundary;
}
/**
* Get the string needed to transfer a file.
*
* @param string $name
* @param ZaloFile $file
*
* @return string
*/
private function getFileString($name, ZaloFile $file)
{
return sprintf(
"--%s\r\nContent-Disposition: form-data; name=\"%s\"; filename=\"%s\"%s\r\n\r\n%s\r\n",
$this->boundary,
$name,
$file->getFileName(),
$this->getFileHeaders($file),
$file->getContents()
);
}
/**
* Get the string needed to transfer a POST field.
*
* @param string $name
* @param string $value
*
* @return string
*/
private function getParamString($name, $value)
{
return sprintf(
"--%s\r\nContent-Disposition: form-data; name=\"%s\"\r\n\r\n%s\r\n",
$this->boundary,
$name,
$value
);
}
/**
* Returns the params as an array of nested params.
*
* @param array $params
*
* @return array
*/
private function getNestedParams(array $params)
{
$query = http_build_query($params, null, '&');
$params = explode('&', $query);
$result = [];
foreach ($params as $param) {
list($key, $value) = explode('=', $param, 2);
$result[urldecode($key)] = urldecode($value);
}
return $result;
}
/**
* Get the headers needed before transferring the content of a POST file.
*
* @param ZaloFile $file
*
* @return string
*/
protected function getFileHeaders(ZaloFile $file)
{
return "\r\nContent-Type: {$file->getMimetype()}";
}
}