import "cat721Proto.scrypt";import "nftParallelClosedMinterProto.scrypt";import "../utils/stateUtils.scrypt";import "../utils/backtrace.scrypt";import "../utils/sigHashUtils.scrypt";import "../utils/txUtil.scrypt";

contract NftParallelClosedMinter {
  bytes issuerAddress;
  bytes genesisOutpoint;
  int max;
  constructor(bytes ownerAddress, bytes genesisOutpoint, int max) {
    this.issuerAddress = ownerAddress;
    this.genesisOutpoint = genesisOutpoint;
    this.max = max;
  }
  public function mint(bytes[5] curTxoStateHashes, CAT721State nftMint, bytes issuerPubKeyPrefix, PubKey issuerPubKey, Sig issuerSig, bytes minterSatoshis, bytes nftSatoshis, NftParallelClosedMinterState preState, PreTxStatesInfo preTxStatesInfo, BacktraceInfo backtraceInfo, SHPreimage shPreimage, PrevoutsCtx prevoutsCtx, bytes[6] spentScripts, ChangeInfo changeInfo) {
    require(checkSig(SigHashUtils.checkSHPreimage(shPreimage), SigHashUtils.Gx));
    SigHashUtils.checkPrevoutsCtx(prevoutsCtx, shPreimage.hashPrevouts, shPreimage.inputIndex);
    SigHashUtils.checkSpentScriptsCtx(spentScripts, shPreimage.hashSpentScripts);
    StateUtils.verifyPreStateHash(preTxStatesInfo, NftParallelClosedMinterProto.stateHash(preState), backtraceInfo.preTx.outputScriptList[0], prevoutsCtx.outputIndexVal);
    require(prevoutsCtx.inputIndexVal == 0);
    bytes preScript = spentScripts[(prevoutsCtx.inputIndexVal)];
    Backtrace.verifyUnique(prevoutsCtx.spentTxhash, backtraceInfo, this.genesisOutpoint, preScript);
    bytes prevOutpoint = backtraceInfo.preTxInput.txhash + backtraceInfo.preTxInput.outputIndex;
    if(prevOutpoint == this.genesisOutpoint) {
        require(preTxStatesInfo.txoStateHashes[1] == b'');
        require(preTxStatesInfo.txoStateHashes[2] == b'');
        require(preTxStatesInfo.txoStateHashes[3] == b'');
        require(preTxStatesInfo.txoStateHashes[4] == b'');
      }
    bytes hashString = b'';
    bytes minterOutput = b'';
    int stateNumber = 0;
    int nextLocalId1 = preState.nextLocalId + preState.nextLocalId + 1;
    int nextLocalId2 = preState.nextLocalId + preState.nextLocalId + 2;
    if(nextLocalId1 < this.max) {
        minterOutput += TxUtil.buildOutput(preScript, minterSatoshis);
        hashString += hash160(NftParallelClosedMinterProto.stateHash({preState.nftScript, nextLocalId1}));
        stateNumber += 1;
      }
    if(nextLocalId2 < this.max) {
        minterOutput += TxUtil.buildOutput(preScript, minterSatoshis);
        hashString += hash160(NftParallelClosedMinterProto.stateHash({preState.nftScript, nextLocalId2}));
        stateNumber += 1;
      }
    require(nftMint.localId == preState.nextLocalId);
    hashString += hash160(CAT721Proto.stateHash(nftMint));
    bytes nftOutput = TxUtil.buildOutput(preState.nftScript, nftSatoshis);
    stateNumber += 1;
    bytes stateOutput = StateUtils.getCurrentStateOutput(hashString, stateNumber, curTxoStateHashes);
    bytes changeOutput = TxUtil.getChangeOutput(changeInfo);
    Sha256 hashOutputs = sha256(stateOutput + minterOutput + nftOutput + changeOutput);
    require(hashOutputs == shPreimage.hashOutputs);
    require(this.issuerAddress == hash160(issuerPubKeyPrefix + issuerPubKey));
    require(checkSig(issuerSig, issuerPubKey));
  }
}