/**
* @param Binary $backer
* @param Signer $signer
* @return Coin
* @throws \Exception
*/
public function confirm(Binary $backer, Signer $signer)
{
$allBases = $this->getBases();
$myBases = array_values(array_filter($allBases, function (Base $base) use($backer) {
return $base->getOutput()->getTarget() == $backer;
}));
if (!$myBases) {
throw new \Exception('Not a backer');
}
$output = new Output($this->getOwner(), $this->getValue()->times($this->baseSum($myBases))->dividedBy($this->baseSum($allBases)));
$confirmed = $this->input->getTransaction();
return new Coin(new Input(Confirmation::signedConfirmation($myBases, $output, $confirmed, $signer), 0));
}
