import "cat20Proto.scrypt";import "closedMinterProto.scrypt";import "../utils/stateUtils.scrypt";import "../utils/backtrace.scrypt";import "../utils/sigHashUtils.scrypt";import "../utils/txUtil.scrypt";

contract ClosedMinter {
  bytes issuerAddress;
  bytes genesisOutpoint;
  constructor(bytes ownerAddress, bytes genesisOutpoint) {
    this.issuerAddress = ownerAddress;
    this.genesisOutpoint = genesisOutpoint;
  }
  public function mint(bytes[5] curTxoStateHashes, CAT20State tokenMint, bytes issuerPubKeyPrefix, PubKey issuerPubKey, Sig issuerSig, bytes genesisSatoshis, bytes tokenSatoshis, ClosedMinterState preState, PreTxStatesInfo preTxStatesInfo, BacktraceInfo backtraceInfo, SHPreimage shPreimage, PrevoutsCtx prevoutsCtx, bytes[6] spentScriptsCtx, ChangeInfo changeInfo) {
    require(checkSig(SigHashUtils.checkSHPreimage(shPreimage), SigHashUtils.Gx));
    SigHashUtils.checkPrevoutsCtx(prevoutsCtx, shPreimage.hashPrevouts, shPreimage.inputIndex);
    SigHashUtils.checkSpentScriptsCtx(spentScriptsCtx, shPreimage.hashSpentScripts);
    StateUtils.verifyPreStateHash(preTxStatesInfo, ClosedMinterProto.stateHash(preState), backtraceInfo.preTx.outputScriptList[0], prevoutsCtx.outputIndexVal);
    bytes preScript = spentScriptsCtx[(prevoutsCtx.inputIndexVal)];
    Backtrace.verifyUnique(prevoutsCtx.spentTxhash, backtraceInfo, this.genesisOutpoint, preScript);
    bytes hashString = b'';
    bytes genesisOutput = b'';
    int stateNumber = 0;
    if(genesisSatoshis != TxUtil.ZEROSAT) {
        genesisOutput = TxUtil.buildOutput(preScript, genesisSatoshis);
        hashString += hash160(preTxStatesInfo.txoStateHashes[(prevoutsCtx.outputIndexVal) - 1]);
        stateNumber += 1;
      }
    hashString += hash160(CAT20Proto.stateHash({tokenMint.ownerAddr, tokenMint.amount}));
    bytes tokenOutput = TxUtil.buildOutput(preState.tokenScript, tokenSatoshis);
    stateNumber += 1;
    bytes stateOutput = StateUtils.getCurrentStateOutput(hashString, stateNumber, curTxoStateHashes);
    bytes changeOutput = TxUtil.getChangeOutput(changeInfo);
    Sha256 hashOutputs = sha256(stateOutput + genesisOutput + tokenOutput + changeOutput);
    require(hashOutputs == shPreimage.hashOutputs);
    require(this.issuerAddress == hash160(issuerPubKeyPrefix + issuerPubKey));
    require(checkSig(issuerSig, issuerPubKey));
  }
}