// File: src/RNFTVesting.sol



// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import { IROOT } from "./IROOT.sol";
import { IRNFTV2 } from "./IRNFTV2.sol";

/// @title ROOT Vesting Contract
/// @notice This contract is used for vesting rootNFT rewards on a monthly basis
/// @author nexusflip

contract RNFTVesting is ReentrancyGuard {
    IROOT public root;
    IRNFTV2 public rnftv2;

    uint32 public cliff;
    uint24 public cliffDuration;
    uint128 public withdrawnTokens;
    uint8 public constant NUMBER_OF_CLIFFS = 6;
    uint80 public constant BENEFICIARY_TOKENS = 2000 ether;

    mapping(uint16 => bool) public isTokenIdVested;
    mapping(uint16 => uint80) public rootClaimedByTokenId;
    mapping(address => mapping(uint16 => bool)) public userClaimedIds;
    mapping(address => mapping(uint8 => bool)) public isClaimedUserCliffId;

    event TokensReleased(uint16 tokenId, uint256 amount);

    constructor(
        address _root,
        address _rnftv2,
        uint32 _cliff,
        uint24 _cliffDuration
    ) {
        root = IROOT(_root);
        rnftv2 = IRNFTV2(_rnftv2);
        cliff = _cliff;
        cliffDuration = _cliffDuration;
    }

    function _claimTokens(uint16 _tokenId) internal {
        bool userHasClaimed = userClaimedIds[msg.sender][_tokenId];
        bool tokenIdVested = isTokenIdVested[_tokenId];

        if (!userHasClaimed && !tokenIdVested) {
            userClaimedIds[msg.sender][_tokenId] = true;
            isTokenIdVested[_tokenId] = true;
        }

        if (userClaimedIds[msg.sender][_tokenId]) {
            uint80 toClaim = uint80(BENEFICIARY_TOKENS / NUMBER_OF_CLIFFS);

            if (block.timestamp - cliffDuration >= cliff) {
                toClaim = BENEFICIARY_TOKENS - rootClaimedByTokenId[_tokenId];
            }
            withdrawnTokens += uint128(toClaim);
            rootClaimedByTokenId[_tokenId] += toClaim;

            root.mint(msg.sender, toClaim);
            emit TokensReleased(_tokenId, toClaim);
        }
    }

    function claimUserTokens() external nonReentrant {
        uint256[] memory tokens = rnftv2.getUserTokens(msg.sender);

        require(
            block.timestamp >= cliff,
            "Vesting: cliff time not reached"
        );

        uint8 currentCliffId = uint8(((block.timestamp - cliff) * NUMBER_OF_CLIFFS) / (cliffDuration));

        if (currentCliffId > NUMBER_OF_CLIFFS) {
            currentCliffId = NUMBER_OF_CLIFFS;
        }

        for (uint8 i = 0; i < currentCliffId; i++) {
            if (!isClaimedUserCliffId[msg.sender][i]) {
                for (uint16 j = 0; j < uint16(tokens.length); j++) {
                    _claimTokens(uint16(tokens[j]));
                }

                isClaimedUserCliffId[msg.sender][i] = true;
            }
        }
    }

    function userClaimable() external view returns (uint256 _total) {
        uint256[] memory tokens = rnftv2.getUserTokens(msg.sender);
        uint128 claimableSum = 0;

        for (uint16 i = 0; i < tokens.length; i++) {
            if (userClaimedIds[msg.sender][uint16(tokens[i])]) {
                claimableSum += uint128(BENEFICIARY_TOKENS - rootClaimedByTokenId[uint16(tokens[i])]);
            }

            if(!userClaimedIds[msg.sender][uint16(tokens[i])] && !isTokenIdVested[uint16(tokens[i])]) {
                claimableSum += uint128(BENEFICIARY_TOKENS - rootClaimedByTokenId[uint16(tokens[i])]);
            }
        }
        
        return claimableSum;
    }

    function userClaimed() external view returns (uint256 _total) {
        uint256[] memory tokens = rnftv2.getUserTokens(msg.sender);
        uint128 claimedSum = 0;

        for (uint16 i = 0; i < tokens.length; i++) {
            if (userClaimedIds[msg.sender][uint16(tokens[i])]) {
                claimedSum += uint128(rootClaimedByTokenId[uint16(tokens[i])]);
            }
        }

        return claimedSum;
    }
}
// File: node_modules/@openzeppelin/contracts/access/Ownable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

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() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

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

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: node_modules/@openzeppelin/contracts/security/ReentrancyGuard.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)

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 making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

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

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

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == _ENTERED;
    }
}

// File: src/IROOT.sol



pragma solidity 0.8.17;

interface IROOT {
    function mint(address _to, uint256 _amount) external;
}
// File: src/IRNFTV2.sol



pragma solidity 0.8.17;

interface IRNFTV2 {
    function getUserTokens(address _user) external view returns (uint256[] memory);
}
// File: node_modules/@openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

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;
    }
}