/**
* @param EcAdapterInterface $ecAdapter
* @param ScriptInterface $outputScript
* @param RedeemScript $redeemScript
*/
public function __construct(EcAdapterInterface $ecAdapter, ScriptInterface $outputScript, RedeemScript $redeemScript = null)
{
$classifier = new OutputClassifier($outputScript);
$this->scriptType = $this->prevOutType = $classifier->classify();
// Reclassify if the output is P2SH, so we know how to sign it.
if ($this->scriptType == OutputClassifier::PAYTOSCRIPTHASH) {
if (null === $redeemScript) {
throw new \InvalidArgumentException('Redeem script is required when output is P2SH');
}
$rsClassifier = new OutputClassifier($redeemScript);
$this->scriptType = $rsClassifier->classify();
}
// Gather public keys from redeemScript / outputScript
$this->ecAdapter = $ecAdapter;
$this->redeemScript = $redeemScript;
$this->prevOutScript = $outputScript;
// According to scriptType, extract public keys
$this->execForInputTypes(function () {
// For pay to pub key hash - nothing useful in output script
$this->publicKeys = [];
}, function () {
// For pay to pub key - we can extract this from the output script
$chunks = $this->prevOutScript->getScriptParser()->parse();
$this->publicKeys = [PublicKeyFactory::fromHex($chunks[0]->getHex(), $this->ecAdapter)];
}, function () {
// Multisig - refer to the redeemScript
$this->publicKeys = $this->redeemScript->getKeys();
});
}
