/**
* Encrypt an image file, upload the blob and send the image message to the threemaId
*
* @param string $threemaId
* @param string $imagePath
* @return \Threema\MsgApi\Commands\Results\SendE2EResult
* @throws \Threema\Core\Exception
*/
public final function sendImageMessage($threemaId, $imagePath)
{
//analyse the file
$fileAnalyzeResult = FileAnalysisTool::analyse($imagePath);
if (null === $fileAnalyzeResult) {
throw new Exception('could not analyze the file');
}
if (false === in_array($fileAnalyzeResult->getMimeType(), array('image/jpg', 'image/jpeg', 'image/png'))) {
throw new Exception('file is not a jpg or png');
}
//fetch the public key
$receiverPublicKey = $this->fetchPublicKeyAndCheckCapability($threemaId, function (CapabilityResult $capabilityResult) {
return true === $capabilityResult->canImage();
});
//encrypt the image file
$encryptionResult = $this->cryptTool->encryptImage(file_get_contents($imagePath), $this->privateKey, $receiverPublicKey);
$uploadResult = $this->connection->uploadFile($encryptionResult->getData());
if ($uploadResult === null || !$uploadResult->isSuccess()) {
throw new Exception('could not upload the image (' . $uploadResult->getErrorCode() . ' ' . $uploadResult->getErrorMessage() . ') ' . $uploadResult->getRawResponse());
}
$nonce = $this->cryptTool->randomNonce();
//create a image message box
$imageMessage = $this->cryptTool->encryptImageMessage($uploadResult, $encryptionResult, $this->privateKey, $receiverPublicKey, $nonce);
return $this->connection->sendE2E($threemaId, $nonce, $imageMessage);
}
