//SPDX-License-Identifier: MIT

pragma solidity >=0.6.2;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol";

interface IBrainDrops {
   function mint(address recipient, uint _projectId) external payable returns (uint256);

   function updateProjectArtistName(uint256 _projectId, string memory _projectArtistName) external;

   function updateProjectDescription(uint256 _projectId, string memory _projectDescription) external;

   function updateProjectWebsite(uint256 _projectId, string memory _projectWebsite) external;

   function updateProjectLicense(uint256 _projectId, string memory _projectLicense) external;

   function updateProjectBaseURI(uint256 _projectId, string memory _projectBaseURI) external;

   function updateProjectPricePerTokenInWei(uint256 _projectId, uint256 _pricePerTokenInWei) external;

   function toggleProjectIsPaused(uint256 _projectId) external;

   function setProvenanceHash(uint256 _projectId, string memory provenanceHash) external;

   function balanceOf(address owner) external view returns (uint256 balance);

   function ownerOf(uint256 tokenId) external view returns (address owner);

   function isWhitelisted(address sender) external view returns (bool whitelisted);

   function transferFrom(address from, address to, uint256 tokenId) external;
}

interface IDelegationRegistry {
   function checkDelegateForContract(address delegate, address vault, address contract_) external returns(bool);
}

contract ArtistProxy is Ownable, ReentrancyGuard {
    constructor(address _braindropsAddress) {
      braindrops = IBrainDrops(_braindropsAddress);
    }

    IBrainDrops public braindrops;
    IDelegationRegistry public delegationRegistry;

    mapping(uint256 => mapping(address => bool)) public projectIdToProxyDropAddressMinted;
    mapping(uint256 => mapping(address => bool)) public projectIdToMerkleDropAddressMinted;
    mapping(uint256 => mapping(uint256 => bool)) public projectIdToGenesisDropTokenMinted;
    mapping(uint256 => mapping(uint256 => bool)) public projectIdToProjectSpecificHoldersTokenMinted;

    mapping(uint256 => address) public projectIdToArtistAddress;
    mapping(uint256 => bytes32) public projectIdToMerkleRoot;
    mapping(uint256 => bool) public projectIdToProjectActivated;
    mapping(uint256 => bool) public projectIdToHolderActivated;
    mapping(uint256 => bool) public projectIdToGenesisDropActivated;
    mapping(uint256 => bool) public projectIdToIsMerkleTreeActivated;
    mapping(uint256 => bool) public projectIdToProjectIsAddressMintLimited;

    mapping(uint256 => uint256) public projectIdToOlderProjectId;

    modifier onlyArtist(uint256 _projectId) {
        require(msg.sender == projectIdToArtistAddress[_projectId], "Only artist");
        _;
    }

    modifier onlyArtistOrOwner(uint256 _projectId) {
        require(msg.sender == projectIdToArtistAddress[_projectId] || msg.sender == owner(), "Only artist or owner");
        _;
    }

    modifier onlyAllowListed() {
        require(braindrops.isWhitelisted(msg.sender), "Only allowListed");
        _;
    }

    modifier onlyHolders(uint256 _projectId) {
        require(braindrops.balanceOf(msg.sender) > 0, "Holders only");
        _;
    }

    function setProjectMerkleRoot(uint projectId, bytes32 merkleRoot) public onlyArtistOrOwner(projectId) {
        projectIdToMerkleRoot[projectId] = merkleRoot;
    }

    function setDelegationRegistry(address _registryAddress) public onlyOwner {
      delegationRegistry = IDelegationRegistry(_registryAddress);
    }

    function setArtist(uint projectId, address artistAddress) public onlyAllowListed {
        projectIdToArtistAddress[projectId] = artistAddress;
    }

    function updateProjectArtistName(uint256 _projectId, string memory _projectArtistName) onlyArtist(_projectId) public {
        braindrops.updateProjectArtistName(_projectId, _projectArtistName);
    }

    function updateProjectDescription(uint256 _projectId, string memory _projectDescription) onlyArtist(_projectId) public {
        braindrops.updateProjectDescription(_projectId, _projectDescription);
    }

    function updateProjectWebsite(uint256 _projectId, string memory _projectWebsite) onlyArtist(_projectId) public {
        braindrops.updateProjectWebsite(_projectId, _projectWebsite);
    }

    function updateProjectLicense(uint256 _projectId, string memory _projectLicense) onlyArtist(_projectId) public {
        braindrops.updateProjectLicense(_projectId, _projectLicense);
    }

    function updateProjectBaseURI(uint256 _projectId, string memory _projectBaseURI) onlyArtist(_projectId) public {
        braindrops.updateProjectBaseURI(_projectId, _projectBaseURI);
    }

    function updateProjectPricePerTokenInWei(uint256 _projectId, uint256 _pricePerTokenInWei) onlyArtist(_projectId) public {
        braindrops.updateProjectPricePerTokenInWei(_projectId, _pricePerTokenInWei);
    }

    function toggleProjectIsPaused(uint256 _projectId) public onlyArtist(_projectId) {
        braindrops.toggleProjectIsPaused(_projectId);
    }

    function setProvenanceHash(uint256 _projectId, string memory provenanceHash) public onlyArtist(_projectId) {
        braindrops.setProvenanceHash(_projectId, provenanceHash);
    }

    function toggleProjectIsAddressMintLimited(uint256 _projectId) public onlyArtist(_projectId) {
        projectIdToProjectIsAddressMintLimited[_projectId] = !projectIdToProjectIsAddressMintLimited[_projectId];
    }

    function toggleProjectIsActive(uint256 _projectId) public onlyArtist(_projectId) {
        projectIdToProjectActivated[_projectId] = !projectIdToProjectActivated[_projectId];
    }

    function toggleProjectIsHolderActive(uint256 _projectId) public onlyArtist(_projectId) {
        projectIdToHolderActivated[_projectId] = !projectIdToHolderActivated[_projectId];
    }

    function toggleProjectIsGenesisDropActive(uint256 _projectId) public onlyArtist(_projectId) {
        projectIdToGenesisDropActivated[_projectId] = !projectIdToGenesisDropActivated[_projectId];
    }

    function toggleProjectIsMerkleTreeActive(uint256 _projectId) public onlyArtist(_projectId) {
        projectIdToIsMerkleTreeActivated[_projectId] = !projectIdToIsMerkleTreeActivated[_projectId];
    }

    function setProjectIdToOlderProjectId(uint256 _projectId, uint256 _olderProjectId) public onlyArtist(_projectId) {
        projectIdToOlderProjectId[_projectId] = _olderProjectId;
    }

  function mintForArtistsOnly(address recipient, uint _projectId)
        public
        payable
        onlyArtist(_projectId)
        returns (uint256)
      {
          return braindrops.mint{value: msg.value}(recipient, _projectId);
      }

   function reserve(address recipient, uint _projectId, uint amount)
        public
        payable
        onlyArtistOrOwner(_projectId)
      {

          uint b;
          for (b = 0; b < amount; b++) {
            braindrops.mint{value: (msg.value / amount)}(recipient, _projectId);
          }
      }

  function mintForMerkleRootAddresses(address recipient, uint _projectId, bytes32[] calldata merkleProof)
        public
        payable
        nonReentrant
        returns (uint256)
      {
        require(projectIdToIsMerkleTreeActivated[_projectId], "Merkle mint is not active");
        require(!projectIdToMerkleDropAddressMinted[_projectId][msg.sender], "Already minted with this proof");
        
        bytes32 leaf = keccak256(abi.encodePacked(msg.sender));
        require(MerkleProof.verify(merkleProof, projectIdToMerkleRoot[_projectId], leaf), "Invalid proof");

        projectIdToMerkleDropAddressMinted[_projectId][msg.sender] = true;

        return braindrops.mint{value: msg.value}(recipient, _projectId);
      }

  function mintForProjectSpecificHoldersOnly(address recipient, uint _projectId, uint _projectTokenId)
        public
        payable
        nonReentrant
        returns (uint256)
      {
          uint olderProjectId = projectIdToOlderProjectId[_projectId];
          require(olderProjectId > 0, "Project must be active for project-holder specific mints");

          uint _projectIdFromTokenId = (_projectTokenId - (_projectTokenId % 1000000)) / 1000000;
          require(_projectIdFromTokenId == olderProjectId, "must pass in a token id from the correct project");
          require(braindrops.ownerOf(_projectTokenId) == msg.sender, "sender must own token id passed in");

          require(projectIdToGenesisDropTokenMinted[_projectId][_projectTokenId] == false, "token already used to mint");

          projectIdToGenesisDropTokenMinted[_projectId][_projectTokenId] = true;

          return braindrops.mint{value: msg.value}(recipient, _projectId);
      }

  function mintForGenesisDropHoldersOnly(address recipient, uint _projectId, uint _project1TokenId, uint _project2TokenId, uint _project3TokenId, address _vault)
        public
        payable
        nonReentrant
        returns (uint256)
      {
          address requester = msg.sender;

          if (_vault != address(0)) {
            bool isDelegateValid = delegationRegistry.checkDelegateForContract(msg.sender, _vault, address(braindrops));
            require(isDelegateValid, "invalid delegate-vault pairing");
            requester = _vault;
          }

          require(projectIdToGenesisDropActivated[_projectId], "Project must be active for genesis set holders");

          uint _project1Id = (_project1TokenId - (_project1TokenId % 1000000)) / 1000000;
          require(_project1Id == 1, "must pass in a token id from project 1");
          require(projectIdToGenesisDropTokenMinted[_projectId][_project1TokenId] == false, "project 1 token already used to mint");

          uint _project2Id = (_project2TokenId - (_project2TokenId % 1000000)) / 1000000;
          require(_project2Id == 2, "must pass in a token id from project 2");
          require(projectIdToGenesisDropTokenMinted[_projectId][_project2TokenId] == false, "project 2 token already used to mint");

          uint _project3Id = (_project3TokenId - (_project3TokenId % 1000000)) / 1000000;
          require(_project3Id == 3, "must pass in a token id from project 3");
          require(projectIdToGenesisDropTokenMinted[_projectId][_project3TokenId] == false, "project 3 token already used to mint");

          require(braindrops.ownerOf(_project1TokenId) == requester, "must own the selected token from project 1");
          require(braindrops.ownerOf(_project2TokenId) == requester, "must own the selected token from project 2");
          require(braindrops.ownerOf(_project3TokenId) == requester, "must own the selected token from project 3");

          projectIdToGenesisDropTokenMinted[_projectId][_project1TokenId] = true;
          projectIdToGenesisDropTokenMinted[_projectId][_project2TokenId] = true;
          projectIdToGenesisDropTokenMinted[_projectId][_project3TokenId] = true;

          return braindrops.mint{value: msg.value}(recipient, _projectId);
      }

  function mintForHoldersOnly(address recipient, uint _projectId)
        public
        payable
        nonReentrant
        onlyHolders(_projectId)
        returns (uint256)
      {
          require(projectIdToHolderActivated[_projectId], "Project must be active for holders");

          return braindrops.mint{value: msg.value}(recipient, _projectId);
      }

  function mint(address recipient, uint _projectId)
        public
        payable
        nonReentrant
        returns (uint256)
      {
          require(tx.origin == msg.sender, "cannot be called from another contract");
          require(projectIdToProjectActivated[_projectId], "Project must be active");

          if (projectIdToProjectIsAddressMintLimited[_projectId]) {
            require(projectIdToProxyDropAddressMinted[_projectId][msg.sender] == false, "One mint per address");
            projectIdToProxyDropAddressMinted[_projectId][msg.sender] = true;
          }

          return braindrops.mint{value: msg.value}(recipient, _projectId);
      }

  function withdraw() public onlyOwner {
    uint balance = address(this).balance;
    payable(msg.sender).transfer(balance);
  }

}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev These functions deal with verification of Merkle Trees proofs.
 *
 * The proofs can be generated using the JavaScript library
 * https://github.com/miguelmota/merkletreejs[merkletreejs].
 * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled.
 *
 * See `test/utils/cryptography/MerkleProof.test.js` for some examples.
 */
library MerkleProof {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(
        bytes32[] memory proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        bytes32 computedHash = leaf;

        for (uint256 i = 0; i < proof.length; i++) {
            bytes32 proofElement = proof[i];

            if (computedHash <= proofElement) {
                // Hash(current computed hash + current element of the proof)
                computedHash = keccak256(abi.encodePacked(computedHash, proofElement));
            } else {
                // Hash(current element of the proof + current computed hash)
                computedHash = keccak256(abi.encodePacked(proofElement, computedHash));
            }
        }

        // Check if the computed hash (root) is equal to the provided root
        return computedHash == root;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _setOwner(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _setOwner(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

{
  "compilationTarget": {
    "contracts/ArtistProxy.sol": "ArtistProxy"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}