public static bool IsSolvable(this ISigningRepository repo, Script scriptPubKey)
{
var temp = scriptPubKey.FindTemplate();
if (temp is PayToPubkeyTemplate p2pkT)
{
var pk = p2pkT.ExtractScriptPubKeyParameters(scriptPubKey) !;
if (repo.TryGetPubKey(pk.Hash, out var _))
{
return(true);
}
}
if (temp is PayToPubkeyHashTemplate p2pkhT)
{
var keyId = p2pkhT.ExtractScriptPubKeyParameters(scriptPubKey) !;
if (repo.TryGetPubKey(keyId, out var _))
{
return(true);
}
}
PubKey[]? pks = null;
if (temp is PayToMultiSigTemplate p2multiT)
{
pks = p2multiT.ExtractScriptPubKeyParameters(scriptPubKey) !.PubKeys;
}
if (temp is PayToScriptHashTemplate p2shT)
{
var scriptId = p2shT.ExtractScriptPubKeyParameters(scriptPubKey) !;
// This will give us witness script directly in case of p2sh-p2wsh
if (repo.TryGetScript(scriptId, out var sc))
{
scriptPubKey = sc;
pks = sc.GetAllPubKeys();
}
}
if (temp is PayToWitTemplate)
{
var witId = PayToWitScriptHashTemplate.Instance.ExtractScriptPubKeyParameters(scriptPubKey);
if (witId != null)
{
if (repo.TryGetScript(witId.HashForLookUp, out var sc))
{
pks = sc.GetAllPubKeys();
}
}
var wpkh = PayToWitPubKeyHashTemplate.Instance.ExtractScriptPubKeyParameters(scriptPubKey);
if (wpkh != null)
{
var witKeyId = wpkh.AsKeyId();
if (repo.TryGetPubKey(witKeyId, out var _))
{
return(true);
}
}
}
if (pks != null)
{
foreach (var pk in pks)
{
if (!repo.TryGetPubKey(pk.Hash, out var _))
{
return(false);
}
}
return(true);
}
return(false);
}
