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// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

import "./VRFTypes.sol";

/**
 * @title BatchVRFCoordinatorV2
 * @notice The BatchVRFCoordinatorV2 contract acts as a proxy to write many random responses to the
 *   provided VRFCoordinatorV2 contract efficiently in a single transaction.
 */
contract BatchVRFCoordinatorV2 {
  VRFCoordinatorV2 public immutable COORDINATOR;

  event ErrorReturned(uint256 indexed requestId, string reason);
  event RawErrorReturned(uint256 indexed requestId, bytes lowLevelData);

  constructor(address coordinatorAddr) {
    COORDINATOR = VRFCoordinatorV2(coordinatorAddr);
  }

  /**
   * @notice fulfills multiple randomness requests with the provided proofs and commitments.
   * @param proofs the randomness proofs generated by the VRF provider.
   * @param rcs the request commitments corresponding to the randomness proofs.
   */
  function fulfillRandomWords(VRFTypes.Proof[] memory proofs, VRFTypes.RequestCommitment[] memory rcs) external {
    require(proofs.length == rcs.length, "input array arg lengths mismatch");
    for (uint256 i = 0; i < proofs.length; i++) {
      try COORDINATOR.fulfillRandomWords(proofs[i], rcs[i]) returns (
        uint96 /* payment */
      ) {
        continue;
      } catch Error(string memory reason) {
        uint256 requestId = getRequestIdFromProof(proofs[i]);
        emit ErrorReturned(requestId, reason);
      } catch (bytes memory lowLevelData) {
        uint256 requestId = getRequestIdFromProof(proofs[i]);
        emit RawErrorReturned(requestId, lowLevelData);
      }
    }
  }

  /**
   * @notice Returns the proving key hash associated with this public key.
   * @param publicKey the key to return the hash of.
   */
  function hashOfKey(uint256[2] memory publicKey) internal pure returns (bytes32) {
    return keccak256(abi.encode(publicKey));
  }

  /**
   * @notice Returns the request ID of the request associated with the given proof.
   * @param proof the VRF proof provided by the VRF oracle.
   */
  function getRequestIdFromProof(VRFTypes.Proof memory proof) internal pure returns (uint256) {
    bytes32 keyHash = hashOfKey(proof.pk);
    return uint256(keccak256(abi.encode(keyHash, proof.seed)));
  }
}

interface VRFCoordinatorV2 {
  function fulfillRandomWords(VRFTypes.Proof memory proof, VRFTypes.RequestCommitment memory rc)
    external
    returns (uint96);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

/**
 * @title VRFTypes
 * @notice The VRFTypes library is a collection of types that is required to fulfill VRF requests
 * 	on-chain. They must be ABI-compatible with the types used by the coordinator contracts.
 */
library VRFTypes {
  // ABI-compatible with VRF.Proof.
  // This proof is used for VRF V2.
  struct Proof {
    uint256[2] pk;
    uint256[2] gamma;
    uint256 c;
    uint256 s;
    uint256 seed;
    address uWitness;
    uint256[2] cGammaWitness;
    uint256[2] sHashWitness;
    uint256 zInv;
  }

  // ABI-compatible with VRFCoordinatorV2.RequestCommitment.
  // This is only used for VRF V2.
  struct RequestCommitment {
    uint64 blockNum;
    uint64 subId;
    uint32 callbackGasLimit;
    uint32 numWords;
    address sender;
  }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 1000000
  },
  "metadata": {
    "bytecodeHash": "none"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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[{"inputs":[{"internalType":"address","name":"coordinatorAddr","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"requestId","type":"uint256"},{"indexed":false,"internalType":"string","name":"reason","type":"string"}],"name":"ErrorReturned","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"requestId","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"lowLevelData","type":"bytes"}],"name":"RawErrorReturned","type":"event"},{"inputs":[],"name":"COORDINATOR","outputs":[{"internalType":"contract VRFCoordinatorV2","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"uint256[2]","name":"pk","type":"uint256[2]"},{"internalType":"uint256[2]","name":"gamma","type":"uint256[2]"},{"internalType":"uint256","name":"c","type":"uint256"},{"internalType":"uint256","name":"s","type":"uint256"},{"internalType":"uint256","name":"seed","type":"uint256"},{"internalType":"address","name":"uWitness","type":"address"},{"internalType":"uint256[2]","name":"cGammaWitness","type":"uint256[2]"},{"internalType":"uint256[2]","name":"sHashWitness","type":"uint256[2]"},{"internalType":"uint256","name":"zInv","type":"uint256"}],"internalType":"struct VRFTypes.Proof[]","name":"proofs","type":"tuple[]"},{"components":[{"internalType":"uint64","name":"blockNum","type":"uint64"},{"internalType":"uint64","name":"subId","type":"uint64"},{"internalType":"uint32","name":"callbackGasLimit","type":"uint32"},{"internalType":"uint32","name":"numWords","type":"uint32"},{"internalType":"address","name":"sender","type":"address"}],"internalType":"struct VRFTypes.RequestCommitment[]","name":"rcs","type":"tuple[]"}],"name":"fulfillRandomWords","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000ae975071be8f8ee67addbc1a82488f1c24858067

-----Decoded View---------------
Arg [0] : coordinatorAddr (address): 0xAE975071Be8F8eE67addBC1A82488F1C24858067

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000ae975071be8f8ee67addbc1a82488f1c24858067