// File: @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: @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: @openzeppelin/contracts/token/ERC20/IERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// File: @openzeppelin/contracts/token/ERC721/IERC721.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}

// File: @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;
    }
}

// File: @openzeppelin/contracts/utils/introspection/IERC165.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// File: contracts/MamiStakeV2.sol



pragma solidity ^0.8.17;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

interface RewardsToken {
    function mint(address, uint256) external;
}

contract MamiStakeV2 is Ownable, ReentrancyGuard {
    Pool[] public pools;

    mapping(uint256 => uint256[]) public poolStakeTokenIds;

    mapping(uint256 => uint256) public poolStakeAmount;

    mapping(uint256 => mapping(uint256 => PoolStake)) public poolStakes;

    uint256 public start;

    struct PoolStake {
        bool staked;
        uint256 last;
        uint256 remainRewardsAmount;
    }

    struct Pool {
        address needNftAddress;
        address needTokenAddress;
        uint256 needTokenAmount;
        uint256 rate;
        address rewardsTokenAddress;
        uint256[] sharePoolIds;
    }

    constructor() {
        start = block.number;
        uint256[] memory sharePoolIds0 = new uint256[](1);
        sharePoolIds0[0] = 1;
        uint256[] memory sharePoolIds1 = new uint256[](1);
        sharePoolIds1[0] = 0;
        //mainnet
        address lmc = 0x8983CF891867942d06AD6CEb9B9002de860E202d;
        address ssr = 0xbc77f3A44f19113845B2870ce9E72f612D77DC17;
        addPool(ssr, lmc, 23000 ether, 0 ether, lmc, sharePoolIds0);
        addPool(ssr, address(0), 0, 0 ether, lmc, sharePoolIds1);

        //test
        // address lmc = 0x42A282eCea54dF092d32D1937e9B83C769DDF1c6;
        // address ssr = 0x7023ba9cFA134E5c781a9278Fc7486467B221D5E;
        // addPool(ssr, lmc, 23000 ether, 6 ether, lmc, sharePoolIds0);
        // addPool(ssr, address(0), 0, 3.3 ether, lmc, sharePoolIds1);
    }

    function checkStaked(
        uint256 _poolId,
        uint256[] calldata _tokenIds
    ) external view returns (bool[] memory) {
        bool[] memory stakeds = new bool[](_tokenIds.length);
        Pool storage pool = pools[_poolId];
        uint256[] memory sharePoolIds = pool.sharePoolIds;
        for (uint256 i = 0; i < _tokenIds.length; i++) {
            PoolStake storage poolStake = poolStakes[_poolId][_tokenIds[i]];
            if (poolStake.staked) {
                stakeds[i] = true;
                continue;
            }

            for (uint256 y = 0; y < pool.sharePoolIds.length; y++) {
                if (poolStakes[sharePoolIds[y]][_tokenIds[i]].staked) {
                    stakeds[i] = true;
                    break;
                }
            }
        }
        return stakeds;
    }

    function stake(
        uint256 _poolId,
        uint256[] calldata _tokenIds,
        uint256[] calldata _syncTokenIds
    ) external {
        _sync(_poolId, _syncTokenIds);
        Pool storage pool = pools[_poolId];
        uint256[] memory sharePoolIds = pool.sharePoolIds;
        for (uint256 i = 0; i < _tokenIds.length; i++) {
            require(
                _msgSender() ==
                    IERC721(pool.needNftAddress).ownerOf(_tokenIds[i]),
                "You dont owner this nft"
            );
            PoolStake storage poolStake = poolStakes[_poolId][_tokenIds[i]];
            require(!poolStake.staked, "The nft already staked");

            for (uint256 y = 0; y < pool.sharePoolIds.length; y++) {
                require(
                    !poolStakes[sharePoolIds[y]][_tokenIds[i]].staked,
                    "The nft already staked"
                );
            }

            poolStake.staked = true;
            poolStake.last = block.number;
            poolStakeTokenIds[_poolId].push(_tokenIds[i]);
        }
        poolStakeAmount[_poolId] += _tokenIds.length;
        if (pool.needTokenAddress != address(0)) {
            IERC20(pool.needTokenAddress).transferFrom(
                _msgSender(),
                address(this),
                pool.needTokenAmount * _tokenIds.length
            );
        }
    }

    function unStake(
        uint256 _poolId,
        uint256[] calldata _tokenIds,
        uint256[] calldata _syncTokenIds
    ) external {
        claim(_poolId, _syncTokenIds, _syncTokenIds);
        Pool storage pool = pools[_poolId];

        for (uint256 i = 0; i < _tokenIds.length; i++) {
            require(
                _msgSender() ==
                    IERC721(pool.needNftAddress).ownerOf(_tokenIds[i]),
                "You dont owner this nft"
            );
            PoolStake storage poolStake = poolStakes[_poolId][_tokenIds[i]];
            require(poolStake.staked, "The nft must staked");

            poolStake.staked = false;
        }
        poolStakeAmount[_poolId] -= _tokenIds.length;
        if (pool.needTokenAddress != address(0)) {
            IERC20(pool.needTokenAddress).transfer(
                _msgSender(),
                pool.needTokenAmount * _tokenIds.length
            );
        }
    }

    function claim(
        uint256 _poolId,
        uint256[] calldata _tokenIds,
        uint256[] calldata _syncTokenIds
    ) public {
        _sync(_poolId, _syncTokenIds);
        Pool storage pool = pools[_poolId];
        uint256 rewardsAmount = 0;
        for (uint256 i = 0; i < _tokenIds.length; i++) {
            require(
                _msgSender() ==
                    IERC721(pool.needNftAddress).ownerOf(_tokenIds[i]),
                "You dont owner this nft"
            );
            PoolStake storage poolStake = poolStakes[_poolId][_tokenIds[i]];
            require(poolStake.staked, "The nft must staked");
            rewardsAmount += poolStake.remainRewardsAmount;
            poolStake.remainRewardsAmount = 0;
        }
        RewardsToken(pool.rewardsTokenAddress).mint(
            _msgSender(),
            rewardsAmount
        );
    }

    function getRewardsAmount(
        uint256 _poolId,
        uint256[] calldata _tokenIds
    ) public view returns (uint256) {
        uint256 rewardsAmount = 0;
        Pool storage pool = pools[_poolId];
        uint256 totalRewardsAmount = (block.number - start) * pool.rate;
        for (uint256 i = 0; i < _tokenIds.length; i++) {
            PoolStake storage poolStake = poolStakes[_poolId][_tokenIds[i]];
            if (poolStake.staked) {
                rewardsAmount +=
                    poolStake.remainRewardsAmount +
                    (totalRewardsAmount * (block.number - poolStake.last)) /
                    (block.number - start) /
                    poolStakeAmount[_poolId];
            }
        }
        return rewardsAmount;
    }

    function _sync(
        uint256 _poolId,
        uint256[] memory _syncTokenIds
    ) private nonReentrant {
        Pool storage pool = pools[_poolId];
        uint256 totalRewardsAmount = (block.number - start) * pool.rate;
        for (uint256 i = 0; i < _syncTokenIds.length; i++) {
            uint256 tokenId = _syncTokenIds[i];
            PoolStake storage poolStake = poolStakes[_poolId][tokenId];
            if (block.number == poolStake.last) {
                continue;
            }
            if (poolStake.staked) {
                poolStake.remainRewardsAmount +=
                    (totalRewardsAmount * (block.number - poolStake.last)) /
                    (block.number - start) /
                    poolStakeAmount[_poolId];
                poolStake.last = block.number;
            }
        }
    }

    function addPool(
        address _needNftAddress,
        address _needTokenAddress,
        uint256 _needTokenAmount,
        uint256 _rate,
        address _rewardsTokenAddress,
        uint256[] memory _sharePoolIds
    ) public onlyOwner {
        pools.push(
            Pool(
                _needNftAddress,
                _needTokenAddress,
                _needTokenAmount,
                _rate,
                _rewardsTokenAddress,
                _sharePoolIds
            )
        );
    }

    function editPool(
        uint256 _poolId,
        uint256 _rate,
        address _rewardsTokenAddress,
        uint256[] memory _sharePoolIds
    ) external onlyOwner {
        _sync(_poolId, poolStakeTokenIds[_poolId]);
        Pool storage pool = pools[_poolId];
        pool.rate = _rate;
        pool.rewardsTokenAddress = _rewardsTokenAddress;
        pool.sharePoolIds = _sharePoolIds;
    }
}