// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 * 
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 * 
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())
            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())
            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }
    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal virtual view returns (address);
    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback() internal {
        _beforeFallback();
        _delegate(_implementation());
    }
    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback () payable external {
        _fallback();
    }
    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive () payable external {
        _fallback();
    }
    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     * 
     * If overriden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
import "./UpgradeableProxy.sol";
/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 * 
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
 * clashing], which can potentially be used in an attack, this contract uses the
 * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
 * things that go hand in hand:
 * 
 * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
 * that call matches one of the admin functions exposed by the proxy itself.
 * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
 * implementation. If the admin tries to call a function on the implementation it will fail with an error that says
 * "admin cannot fallback to proxy target".
 * 
 * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
 * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
 * to sudden errors when trying to call a function from the proxy implementation.
 * 
 * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
 * you should think of the `ProxyAdmin` instance as the real administrative inerface of your proxy.
 */
contract TransparentUpgradeableProxy is UpgradeableProxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
     */
    constructor(address initialLogic, address initialAdmin, bytes memory _data) payable UpgradeableProxy(initialLogic, _data) {
        assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
        _setAdmin(initialAdmin);
    }
    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);
    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
    /**
     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
     */
    modifier ifAdmin() {
        if (msg.sender == _admin()) {
            _;
        } else {
            _fallback();
        }
    }
    /**
     * @dev Returns the current admin.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
     * 
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function admin() external ifAdmin returns (address) {
        return _admin();
    }
    /**
     * @dev Returns the current implementation.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
     * 
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
     */
    function implementation() external ifAdmin returns (address) {
        return _implementation();
    }
    /**
     * @dev Changes the admin of the proxy.
     * 
     * Emits an {AdminChanged} event.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
     */
    function changeAdmin(address newAdmin) external ifAdmin {
        require(newAdmin != address(0), "TransparentUpgradeableProxy: new admin is the zero address");
        emit AdminChanged(_admin(), newAdmin);
        _setAdmin(newAdmin);
    }
    /**
     * @dev Upgrade the implementation of the proxy.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    function upgradeTo(address newImplementation) external ifAdmin {
        _upgradeTo(newImplementation);
    }
    /**
     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
     * proxied contract.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
        _upgradeTo(newImplementation);
        // solhint-disable-next-line avoid-low-level-calls
        (bool success,) = newImplementation.delegatecall(data);
        require(success);
    }
    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view returns (address adm) {
        bytes32 slot = _ADMIN_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            adm := sload(slot)
        }
    }
    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        bytes32 slot = _ADMIN_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newAdmin)
        }
    }
    /**
     * @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
     */
    function _beforeFallback() internal override virtual {
        require(msg.sender != _admin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
        super._beforeFallback();
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
import "./Proxy.sol";
import "../utils/Address.sol";
/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 * 
 * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
 * {TransparentUpgradeableProxy}.
 */
contract UpgradeableProxy is Proxy {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     * 
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializating the storage of the proxy like a Solidity constructor.
     */
    constructor(address _logic, bytes memory _data) payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        _setImplementation(_logic);
        if(_data.length > 0) {
            // solhint-disable-next-line avoid-low-level-calls
            (bool success,) = _logic.delegatecall(_data);
            require(success);
        }
    }
    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);
    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal override view returns (address impl) {
        bytes32 slot = _IMPLEMENTATION_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            impl := sload(slot)
        }
    }
    /**
     * @dev Upgrades the proxy to a new implementation.
     * 
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }
    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "UpgradeableProxy: new implementation is not a contract");
        bytes32 slot = _IMPLEMENTATION_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newImplementation)
        }
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }
    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");
        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }
    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, errorMessage);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }
    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        return _functionCallWithValue(target, data, value, errorMessage);
    }
    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");
        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;
import "./lib/AdminAccess.sol";
import "./interfaces/IERC20.sol";
import "./interfaces/INodePackV3.sol";
import "./interfaces/IStrongPool.sol";
import "./interfaces/IStrongNFTPackBonus.sol";
import "./lib/InternalCalls.sol";
import "./lib/SbMath.sol";
contract NodePackV6 is AdminAccess, INodePackV3, InternalCalls {
  uint constant public PACK_TYPE_NODE_REWARD_LIFETIME = 0;
  uint constant public PACK_TYPE_NODE_REWARD_PER_SECOND = 1;
  uint constant public PACK_TYPE_FEE_STRONG = 2;
  uint constant public PACK_TYPE_FEE_CREATE = 3;
  uint constant public PACK_TYPE_FEE_RECURRING = 4;
  uint constant public PACK_TYPE_FEE_CLAIMING_NUMERATOR = 5;
  uint constant public PACK_TYPE_FEE_CLAIMING_DENOMINATOR = 6;
  uint constant public PACK_TYPE_RECURRING_CYCLE_SECONDS = 7;
  uint constant public PACK_TYPE_GRACE_PERIOD_SECONDS = 8;
  uint constant public PACK_TYPE_PAY_CYCLES_LIMIT = 9;
  uint constant public PACK_TYPE_NODES_LIMIT = 10;
  event Created(address indexed entity, uint packType, uint nodesCount, bool usedCredit, uint timestamp, address migratedFrom);
  event AddedNodes(address indexed entity, uint packType, uint nodesCount, uint totalNodesCount, bool usedCredit, uint timestamp, address migratedFrom);
  event MigratedNodes(address indexed entity, uint packType, uint nodesCount, uint lastPaidAt, uint rewardsDue, uint totalClaimed, address migratedFrom, uint timestamp);
  event MaturedNodes(address indexed entity, uint packType, uint maturedCount);
  event Paid(address indexed entity, uint packType, uint timestamp);
  event Claimed(address indexed entity, uint packType, uint reward);
  event SetNodeFeeCollector(address payable collector);
  event SetFeeCollector(address payable collector);
  event SetTakeStrongBips(uint bips);
  event SetNFTBonusContract(address strongNFTBonus);
  event SetServiceContractEnabled(address service, bool enabled);
  event SetPackTypeActive(uint packType, bool active);
  event SetPackTypeSetting(uint packType, uint settingId, uint value);
  event SetPackTypeHasSettings(uint packType, bool hasSettings);
  IERC20 public strongToken;
  IStrongNFTPackBonus public strongNFTBonus;
  uint public totalNodes;
  uint public totalMaturedNodes;
  uint public totalPacks;
  uint public totalPackTypes;
  uint public takeStrongBips;
  address payable public claimFeeCollector;
  address payable public nodeFeeCollector;
  mapping(address => uint) public entityNodeCount;
  mapping(address => uint) public entityCreditUsed;
  mapping(bytes => uint) public entityPackCreatedAt;
  mapping(bytes => uint) public entityPackLastPaidAt;
  mapping(bytes => uint) public entityPackLastClaimedAt;
  mapping(bytes => uint) public entityPackTotalNodeCount;
  mapping(bytes => uint) public entityPackMaturedNodeCount;
  mapping(bytes => uint) public entityPackRewardDue;
  mapping(bytes => uint) public entityPackClaimedTotal;
  mapping(bytes => uint) public entityPackClaimedMatured;
  mapping(uint => bool) public packTypeActive;
  mapping(uint => bool) public packTypeHasSettings;
  mapping(uint => mapping(uint => uint)) public packTypeSettings;
  mapping(address => bool) private serviceContractEnabled;
  function init(
    IERC20 _strongToken,
    IStrongNFTPackBonus _strongNFTBonus,
    address payable _nodeFeeCollector,
    address payable _claimFeeCollector
  ) external onlyRole(adminControl.SUPER_ADMIN()) {
    require(_claimFeeCollector != address(0), "no address");
    strongToken = _strongToken;
    strongNFTBonus = _strongNFTBonus;
    nodeFeeCollector = _nodeFeeCollector;
    claimFeeCollector = _claimFeeCollector;
    InternalCalls.init();
  }
  //
  // Getters
  // -------------------------------------------------------------------------------------------------------------------
  function canPackBePaid(address _entity, uint _packType) public view returns (bool) {
    return doesPackExist(_entity, _packType) && !hasPackExpired(_entity, _packType) && !hasMaxPayments(_entity, _packType);
  }
  function doesPackExist(address _entity, uint _packType) public view returns (bool) {
    return entityPackLastPaidAt[getPackId(_entity, _packType)] > 0;
  }
  function isPackPastDue(address _entity, uint _packType) public view returns (bool) {
    bytes memory id = getPackId(_entity, _packType);
    uint lastPaidAt = entityPackLastPaidAt[id];
    return block.timestamp > (lastPaidAt + getRecurringPaymentCycle(_packType));
  }
  function hasMaxPayments(address _entity, uint _packType) public view returns (bool) {
    bytes memory id = getPackId(_entity, _packType);
    uint lastPaidAt = entityPackLastPaidAt[id];
    uint recurringPaymentCycle = getRecurringPaymentCycle(_packType);
    uint limit = block.timestamp + recurringPaymentCycle * getPayCyclesLimit(_packType);
    return lastPaidAt + recurringPaymentCycle >= limit;
  }
  function hasPackExpired(address _entity, uint _packType) public view returns (bool) {
    bytes memory id = getPackId(_entity, _packType);
    uint lastPaidAt = entityPackLastPaidAt[id];
    if (lastPaidAt == 0) return true;
    return block.timestamp > (lastPaidAt + getRecurringPaymentCycle(_packType) + getGracePeriod(_packType));
  }
  function getClaimingFee(address _entity, uint _packType, uint _timestamp) public view returns (uint) {
    return getRewardAt(_entity, _packType, _timestamp, true) * getClaimingFeeNumerator(_packType) / getClaimingFeeDenominator(_packType);
  }
  function getPacksClaimingFee(address _entity, uint _timestamp) external view returns (uint) {
    uint fee = 0;
    for (uint packType = 1; packType <= totalPackTypes; packType++) {
      fee = fee + getClaimingFee(_entity, packType, _timestamp);
    }
    return fee;
  }
  function getPackId(address _entity, uint _packType) public pure returns (bytes memory) {
    uint id = _packType != 0 ? _packType : 1;
    return abi.encodePacked(_entity, uint32(id), uint64(1));
  }
  function getEntityPackTotalNodeCount(address _entity, uint _packType) external view returns (uint) {
    return entityPackTotalNodeCount[getPackId(_entity, _packType)];
  }
  function getEntityPackMaturedNodeCount(address _entity, uint _packType) external view returns (uint) {
    return entityPackMaturedNodeCount[getPackId(_entity, _packType)];
  }
  function getEntityPackActiveNodeCount(address _entity, uint _packType) public view returns (uint) {
    bytes memory id = getPackId(_entity, _packType);
    return entityPackTotalNodeCount[id] - entityPackMaturedNodeCount[id];
  }
  function getEntityPackLifetimeRewards(address _entity, uint _packType) public view returns (uint) {
    return getNodeRewardLifetime(_packType) * entityPackTotalNodeCount[getPackId(_entity, _packType)];
  }
  function getEntityPackClaimedMaturedRewards(address _entity, uint _packType) public view returns (uint) {
    return entityPackClaimedMatured[getPackId(_entity, _packType)];
  }
  function getEntityPackClaimedTotalRewards(address _entity, uint _packType) public view returns (uint) {
    return entityPackClaimedTotal[getPackId(_entity, _packType)];
  }
  function getEntityPackAccruedTotalRewards(address _entity, uint _packType) public view returns (uint) {
    return entityPackClaimedTotal[getPackId(_entity, _packType)] + getRewardAt(_entity, _packType, block.timestamp, true);
  }
  function getPackLastPaidAt(address _entity, uint _packType) external view returns (uint) {
    return entityPackLastPaidAt[getPackId(_entity, _packType)];
  }
  function getNodeCreateFee(address _entity, uint _packType) public view returns (uint) {
    uint fee = getCreatingFeeInWei(_packType);
    uint lastPaidAt = entityPackLastPaidAt[getPackId(_entity, _packType)];
    if (lastPaidAt == 0) return fee;
    if (isPackPastDue(_entity, _packType)) return fee;
    if (hasPackExpired(_entity, _packType)) return 0;
    uint payCycleSeconds = getRecurringPaymentCycle(_packType);
    uint dueInSeconds = lastPaidAt + payCycleSeconds - block.timestamp;
    return dueInSeconds * fee / payCycleSeconds;
  }
  function getRecurringFee(address _entity, uint _packType) public view returns (uint) {
    return getRecurringFeeInWei(_packType) * getEntityPackActiveNodeCount(_entity, _packType);
  }
  function getPacksRecurringFee(address _entity) external view returns (uint) {
    uint fee = 0;
    for (uint packType = 1; packType <= totalPackTypes; packType++) {
      if (canPackBePaid(_entity, packType)) fee = fee + getRecurringFee(_entity, packType);
    }
    return fee;
  }
  function getReward(address _entity, uint _packType) external view returns (uint) {
    return getRewardAt(_entity, _packType, block.timestamp, true);
  }
  function getRewardAt(address _entity, uint _packType, uint _timestamp, bool _addBonus) public view returns (uint) {
    bytes memory id = getPackId(_entity, _packType);
    uint lastClaimedAt = entityPackLastClaimedAt[id];
    uint registeredAt = entityPackCreatedAt[id];
    if (!doesPackExist(_entity, _packType)) return 0;
    if (hasPackExpired(_entity, _packType)) return 0;
    if (_timestamp > block.timestamp) return 0;
    if (_timestamp < lastClaimedAt) return 0;
    if (_timestamp <= registeredAt) return 0;
    uint secondsPassed = lastClaimedAt > 0 ? _timestamp - lastClaimedAt : _timestamp - registeredAt;
    uint maxReward = getEntityPackLifetimeRewards(_entity, _packType);
    uint reward = secondsPassed * getNodeRewardPerSecond(_packType) * getEntityPackActiveNodeCount(_entity, _packType);
    uint bonus = _addBonus ? getBonusAt(_entity, _packType, _timestamp) : 0;
    uint totalReward = reward + bonus + entityPackRewardDue[id];
    if (entityPackClaimedTotal[id] >= maxReward) {
      return 0;
    }
    if ((entityPackClaimedTotal[id] + totalReward) >= maxReward) {
      totalReward = maxReward - entityPackClaimedTotal[id];
    }
    return totalReward;
  }
  function getBonusAt(address _entity, uint _packType, uint _timestamp) public view returns (uint) {
    if (address(strongNFTBonus) == address(0)) return 0;
    bytes memory id = getPackId(_entity, _packType);
    uint lastClaimedAt = entityPackLastClaimedAt[id] != 0 ? entityPackLastClaimedAt[id] : entityPackCreatedAt[id];
    return strongNFTBonus.getBonus(_entity, _packType, lastClaimedAt, _timestamp);
  }
  function getEntityRewards(address _entity, uint _timestamp) public view returns (uint) {
    uint reward = 0;
    for (uint packType = 1; packType <= totalPackTypes; packType++) {
      reward = reward + getRewardAt(_entity, packType, _timestamp > 0 ? _timestamp : block.timestamp, true);
    }
    return reward;
  }
  function getEntityCreditAvailable(address _entity, uint _timestamp) public view returns (uint) {
    return getEntityRewards(_entity, _timestamp) - entityCreditUsed[_entity];
  }
  function getRewardBalance() external view returns (uint) {
    return strongToken.balanceOf(address(this));
  }
  //
  // Actions
  // -------------------------------------------------------------------------------------------------------------------
  function create(uint _packType, uint _nodeCount, bool _useCredit) external payable {
    uint fee = getNodeCreateFee(msg.sender, _packType) * _nodeCount;
    uint strongFee = getStrongFeeInWei(_packType) * _nodeCount;
    uint packTypeLimit = getNodesLimit(_packType);
    uint timestamp = block.timestamp;
    bytes memory id = getPackId(msg.sender, _packType);
    require(packTypeActive[_packType], "invalid type");
    require(packTypeLimit == 0 || (entityPackTotalNodeCount[id] + _nodeCount) <= packTypeLimit, "over limit");
    require(_nodeCount >= 1, "invalid node count");
    require(msg.value >= fee, "invalid fee");
    if (address(strongNFTBonus) != address(0)) {
      strongNFTBonus.setEntityPackBonusSaved(msg.sender, _packType);
    }
    totalNodes += _nodeCount;
    entityNodeCount[msg.sender] += _nodeCount;
    if (entityPackTotalNodeCount[id] == 0) {
      entityPackCreatedAt[id] = timestamp;
      entityPackLastPaidAt[id] = timestamp;
      entityPackTotalNodeCount[id] += _nodeCount;
      totalPacks += 1;
      emit Created(msg.sender, _packType, _nodeCount, _useCredit, block.timestamp, address(0));
    }
    else {
      require(!hasPackExpired(msg.sender, _packType), "pack expired");
      updatePackState(msg.sender, _packType, true);
      entityPackTotalNodeCount[id] += _nodeCount;
      emit AddedNodes(msg.sender, _packType, _nodeCount, entityPackTotalNodeCount[id], _useCredit, block.timestamp, address(0));
    }
    if (_useCredit) {
      require(getEntityCreditAvailable(msg.sender, block.timestamp) >= strongFee, "not enough");
      entityCreditUsed[msg.sender] += strongFee;
    } else {
      uint takeStrong = strongFee * takeStrongBips / 10000;
      if (takeStrong > 0) {
        require(strongToken.transferFrom(msg.sender, nodeFeeCollector, takeStrong), "transfer failed");
      }
      if (strongFee > takeStrong) {
        require(strongToken.transferFrom(msg.sender, address(this), strongFee - takeStrong), "transfer failed");
      }
    }
    sendValue(nodeFeeCollector, msg.value);
  }
  function claim(uint _packType, uint _timestamp, address _toStrongPool) public payable returns (uint) {
    address entity = msg.sender == address(strongNFTBonus) ? tx.origin : msg.sender;
    bytes memory id = getPackId(entity, _packType);
    uint lastClaimedAt = entityPackLastClaimedAt[id] != 0 ? entityPackLastClaimedAt[id] : entityPackCreatedAt[id];
    require(doesPackExist(entity, _packType), "doesnt exist");
    require(!hasPackExpired(entity, _packType), "pack expired");
    require(!isPackPastDue(entity, _packType), "past due");
    require(_timestamp <= block.timestamp, "bad timestamp");
    require(lastClaimedAt + 900 < _timestamp, "too soon");
    uint reward = getRewardAt(entity, _packType, _timestamp, true);
    require(reward > 0, "no reward");
    require(strongToken.balanceOf(address(this)) >= reward, "over balance");
    uint fee = reward * getClaimingFeeNumerator(_packType) / getClaimingFeeDenominator(_packType);
    require(msg.value >= fee, "invalid fee");
    entityPackLastClaimedAt[id] = _timestamp;
    entityPackClaimedTotal[id] += reward;
    entityPackRewardDue[id] = 0;
    emit Claimed(entity, _packType, reward);
    if (entityCreditUsed[msg.sender] > 0) {
      if (entityCreditUsed[msg.sender] > reward) {
        entityCreditUsed[msg.sender] = entityCreditUsed[msg.sender] - reward;
        reward = 0;
      } else {
        reward = reward - entityCreditUsed[msg.sender];
        entityCreditUsed[msg.sender] = 0;
      }
    }
    updatePackState(msg.sender, _packType, false);
    if (address(strongNFTBonus) != address(0)) {
      strongNFTBonus.resetEntityPackBonusSaved(id);
    }
    if (reward > 0) {
      if (_toStrongPool != address(0)) IStrongPool(_toStrongPool).mineFor(entity, reward);
      else require(strongToken.transfer(entity, reward), "transfer failed");
    }
    sendValue(claimFeeCollector, fee);
    if (isUserCall() && msg.value > fee) sendValue(payable(msg.sender), msg.value - fee);
    return fee;
  }
  function claimAll(uint _timestamp, address _toStrongPool) external payable makesInternalCalls {
    require(entityNodeCount[msg.sender] > 0, "no nodes");
    uint valueLeft = msg.value;
    for (uint packType = 1; packType <= totalPackTypes; packType++) {
      uint reward = getRewardAt(msg.sender, packType, _timestamp, true);
      if (reward > 0) {
        require(valueLeft >= 0, "not enough");
        uint paid = claim(packType, _timestamp, _toStrongPool);
        valueLeft = valueLeft - paid;
      }
    }
    if (valueLeft > 0) sendValue(payable(msg.sender), valueLeft);
  }
  function pay(uint _packType) public payable returns (uint) {
    require(canPackBePaid(msg.sender, _packType), "cant pay");
    updatePackState(msg.sender, _packType, true);
    bytes memory id = getPackId(msg.sender, _packType);
    uint fee = getRecurringFeeInWei(_packType) * getEntityPackActiveNodeCount(msg.sender, _packType);
    require(msg.value >= fee, "invalid fee");
    entityPackLastPaidAt[id] = entityPackLastPaidAt[id] + getRecurringPaymentCycle(_packType);
    emit Paid(msg.sender, _packType, entityPackLastPaidAt[id]);
    sendValue(nodeFeeCollector, fee);
    if (isUserCall() && msg.value > fee) sendValue(payable(msg.sender), msg.value - fee);
    return fee;
  }
  function payAll() external payable makesInternalCalls {
    require(entityNodeCount[msg.sender] > 0, "no packs");
    uint valueLeft = msg.value;
    for (uint packType = 1; packType <= totalPackTypes; packType++) {
      if (!canPackBePaid(msg.sender, packType)) continue;
      require(valueLeft > 0, "not enough");
      uint paid = pay(packType);
      valueLeft = valueLeft - paid;
    }
    if (valueLeft > 0) sendValue(payable(msg.sender), valueLeft);
  }
  //
  // Admin
  // -------------------------------------------------------------------------------------------------------------------
  function deposit(uint _amount) external onlyRole(adminControl.SUPER_ADMIN()) {
    require(_amount > 0);
    require(strongToken.transferFrom(msg.sender, address(this), _amount), "transfer failed");
  }
  function withdraw(address _destination, uint _amount) external onlyRole(adminControl.SUPER_ADMIN()) {
    require(_amount > 0);
    require(strongToken.balanceOf(address(this)) >= _amount, "over balance");
    require(strongToken.transfer(_destination, _amount), "transfer failed");
  }
  function approveStrongPool(IStrongPool _strongPool, uint _amount) external onlyRole(adminControl.SUPER_ADMIN()) {
    require(strongToken.approve(address(_strongPool), _amount), "approve failed");
  }
  function setNodeFeeCollector(address payable _nodeFeeCollector) external onlyRole(adminControl.SUPER_ADMIN()) {
    require(_nodeFeeCollector != address(0));
    nodeFeeCollector = _nodeFeeCollector;
    emit SetNodeFeeCollector(_nodeFeeCollector);
  }
  function setClaimFeeCollector(address payable _claimFeeCollector) external onlyRole(adminControl.SUPER_ADMIN()) {
    require(_claimFeeCollector != address(0));
    claimFeeCollector = _claimFeeCollector;
    emit SetFeeCollector(_claimFeeCollector);
  }
  function setNFTBonusContract(address _contract) external onlyRole(adminControl.SERVICE_ADMIN()) {
    strongNFTBonus = IStrongNFTPackBonus(_contract);
    emit SetNFTBonusContract(_contract);
  }
  function setTakeStrongBips(uint _bips) external onlyRole(adminControl.SUPER_ADMIN()) {
    require(_bips <= 10000, "invalid value");
    takeStrongBips = _bips;
    emit SetTakeStrongBips(_bips);
  }
  function updateEntityPackLastPaidAt(address _entity, uint _packType, uint _lastPaidAt) external onlyRole(adminControl.SERVICE_ADMIN()) {
    bytes memory id = getPackId(_entity, _packType);
    entityPackLastPaidAt[id] = _lastPaidAt;
  }
  //
  // Settings
  // -------------------------------------------------------------------------------------------------------------------
  function getCustomSettingOrDefaultIfZero(uint _packType, uint _setting) internal view returns (uint) {
    return packTypeHasSettings[_packType] && packTypeSettings[_packType][_setting] > 0
    ? packTypeSettings[_packType][_setting]
    : packTypeSettings[0][_setting];
  }
  function getNodeRewardLifetime(uint _packType) public view returns (uint) {
    return getCustomSettingOrDefaultIfZero(_packType, PACK_TYPE_NODE_REWARD_LIFETIME);
  }
  function getNodeRewardPerSecond(uint _packType) public view returns (uint) {
    return getCustomSettingOrDefaultIfZero(_packType, PACK_TYPE_NODE_REWARD_PER_SECOND);
  }
  function getClaimingFeeNumerator(uint _packType) public view returns (uint) {
    return getCustomSettingOrDefaultIfZero(_packType, PACK_TYPE_FEE_CLAIMING_NUMERATOR);
  }
  function getClaimingFeeDenominator(uint _packType) public view returns (uint) {
    return getCustomSettingOrDefaultIfZero(_packType, PACK_TYPE_FEE_CLAIMING_DENOMINATOR);
  }
  function getCreatingFeeInWei(uint _packType) public view returns (uint) {
    return getCustomSettingOrDefaultIfZero(_packType, PACK_TYPE_FEE_CREATE);
  }
  function getRecurringFeeInWei(uint _packType) public view returns (uint) {
    return getCustomSettingOrDefaultIfZero(_packType, PACK_TYPE_FEE_RECURRING);
  }
  function getStrongFeeInWei(uint _packType) public view returns (uint) {
    return getCustomSettingOrDefaultIfZero(_packType, PACK_TYPE_FEE_STRONG);
  }
  function getRecurringPaymentCycle(uint _packType) public view returns (uint) {
    return getCustomSettingOrDefaultIfZero(_packType, PACK_TYPE_RECURRING_CYCLE_SECONDS);
  }
  function getGracePeriod(uint _packType) public view returns (uint) {
    return getCustomSettingOrDefaultIfZero(_packType, PACK_TYPE_GRACE_PERIOD_SECONDS);
  }
  function getPayCyclesLimit(uint _packType) public view returns (uint) {
    return getCustomSettingOrDefaultIfZero(_packType, PACK_TYPE_PAY_CYCLES_LIMIT);
  }
  function getNodesLimit(uint _packType) public view returns (uint) {
    return getCustomSettingOrDefaultIfZero(_packType, PACK_TYPE_NODES_LIMIT);
  }
  // -------------------------------------------------------------------------------------------------------------------
  function setPackTypeActive(uint _packType, bool _active) external onlyRole(adminControl.SERVICE_ADMIN()) {
    // Pack type 0 is being used as a placeholder for the default settings for pack types that don't have custom ones,
    // So it shouldn't be activated and used to create nodes
    require(_packType > 0, "invalid type");
    packTypeActive[_packType] = _active;
    if (totalPackTypes < _packType && _active) {
      totalPackTypes = _packType;
    }
    emit SetPackTypeActive(_packType, _active);
  }
  function setPackTypeHasSettings(uint _packType, bool _hasSettings) external onlyRole(adminControl.SERVICE_ADMIN()) {
    packTypeHasSettings[_packType] = _hasSettings;
    emit SetPackTypeHasSettings(_packType, _hasSettings);
  }
  function setPackTypeSetting(uint _packType, uint _settingId, uint _value) external onlyRole(adminControl.SERVICE_ADMIN()) {
    packTypeHasSettings[_packType] = true;
    packTypeSettings[_packType][_settingId] = _value;
    emit SetPackTypeSetting(_packType, _settingId, _value);
  }
  function setServiceContractEnabled(address _contract, bool _enabled) external onlyRole(adminControl.SERVICE_ADMIN()) {
    serviceContractEnabled[_contract] = _enabled;
    emit SetServiceContractEnabled(_contract, _enabled);
  }
  // -------------------------------------------------------------------------------------------------------------------
  function sendValue(address payable recipient, uint amount) internal {
    require(address(this).balance >= amount, "insufficient balance");
    // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
    (bool success,) = recipient.call{value : amount}("");
    require(success, "send failed");
  }
  function updatePackState(address _entity, uint _packType) external {
    require(msg.sender == address(strongNFTBonus), "invalid sender");
    updatePackState(_entity, _packType, true);
  }
  function updatePackState(address _entity, uint _packType, bool _saveRewardsDue) internal {
    bytes memory id = getPackId(_entity, _packType);
    uint rewardDue = getRewardAt(_entity, _packType, block.timestamp, false);
    uint accruedTotal = entityPackClaimedTotal[id] + rewardDue;
    uint nodeLifetimeReward = getNodeRewardLifetime(_packType);
    uint maturedNodesTotal = accruedTotal / nodeLifetimeReward;
    uint maturedNodesNew = maturedNodesTotal > entityPackMaturedNodeCount[id] ? maturedNodesTotal - entityPackMaturedNodeCount[id] : 0;
    if (_saveRewardsDue) {
      entityPackRewardDue[id] = rewardDue;
      entityPackLastClaimedAt[id] = block.timestamp;
    }
    if (maturedNodesNew > 0) {
      entityPackMaturedNodeCount[id] += maturedNodesNew;
      entityPackClaimedMatured[id] += maturedNodesNew * nodeLifetimeReward;
      totalMaturedNodes += maturedNodesNew;
      emit MaturedNodes(_entity, _packType, maturedNodesNew);
    }
  }
  //
  // Migration
  // -------------------------------------------------------------------------------------------------------------------
  function migrateNodes(address _entity, uint _packType, uint _nodeCount, uint _lastPaidAt, uint _rewardsDue, uint _totalClaimed) external returns (bool) {
    require(serviceContractEnabled[msg.sender], "no service");
    require(packTypeActive[_packType], "invalid type");
    require(!doesPackExist(_entity, _packType) || !hasPackExpired(_entity, _packType), "pack expired");
    bytes memory id = getPackId(_entity, _packType);
    totalNodes += _nodeCount;
    entityNodeCount[_entity] += _nodeCount;
    if (entityPackCreatedAt[id] == 0) {
      entityPackCreatedAt[id] = block.timestamp;
      entityPackLastPaidAt[id] = _lastPaidAt > 0 ? _lastPaidAt : block.timestamp;
      totalPacks += 1;
      emit Created(_entity, _packType, _nodeCount, false, block.timestamp, msg.sender);
    }
    else {
      updatePackState(_entity, _packType, true);
      if (_lastPaidAt > 0) {
        entityPackLastPaidAt[id] = ((entityPackLastPaidAt[id] * entityPackTotalNodeCount[id]) + (_lastPaidAt * _nodeCount)) / (entityPackTotalNodeCount[id] + _nodeCount);
      }
      emit AddedNodes(_entity, _packType, _nodeCount, entityPackTotalNodeCount[id], false, block.timestamp, msg.sender);
    }
    entityPackTotalNodeCount[id] += _nodeCount;
    entityPackClaimedTotal[id] += _totalClaimed;
    entityPackRewardDue[id] += _rewardsDue;
    if (entityPackTotalNodeCount[id] > _nodeCount) {
      updatePackState(_entity, _packType, true);
    }
    emit MigratedNodes(_entity, _packType, _nodeCount, _lastPaidAt, _rewardsDue, _totalClaimed, msg.sender, block.timestamp);
    return true;
  }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
import "../interfaces/IAdminControl.sol";
abstract contract AdminAccess {
  IAdminControl public adminControl;
  modifier onlyRole(uint8 _role) {
    require(address(adminControl) == address(0) || adminControl.hasRole(_role, msg.sender), "no access");
    _;
  }
  function addAdminControlContract(IAdminControl _contract) external onlyRole(0) {
    adminControl = _contract;
  }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
  /**
   * @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 `recipient`.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool);
  /**
   * @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);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
interface INodePackV3 {
  function doesPackExist(address entity, uint packId) external view returns (bool);
  function hasPackExpired(address entity, uint packId) external view returns (bool);
  function claim(uint packId, uint timestamp, address toStrongPool) external payable returns (uint);
//  function getBonusAt(address _entity, uint _packType, uint _timestamp) external view returns (uint);
  function getPackId(address _entity, uint _packType) external pure returns (bytes memory);
  function getEntityPackTotalNodeCount(address _entity, uint _packType) external view returns (uint);
  function getEntityPackActiveNodeCount(address _entity, uint _packType) external view returns (uint);
  function migrateNodes(address _entity, uint _nodeType, uint _nodeCount, uint _lastPaidAt, uint _rewardsDue, uint _totalClaimed) external returns (bool);
//  function addPackRewardDue(address _entity, uint _packType, uint _rewardDue) external;
  function updatePackState(address _entity, uint _packType) external;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
interface IStrongPool {
  function mineFor(address miner, uint256 amount) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;
interface IStrongNFTPackBonus {
  function getBonus(address _entity, uint _packType, uint _from, uint _to) external view returns (uint);
  function setEntityPackBonusSaved(address _entity, uint _packType) external;
  function resetEntityPackBonusSaved(bytes memory _packId) external;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
import "./Context.sol";
abstract contract InternalCalls is Context {
  uint private constant _NOT_MAKING_INTERNAL_CALLS = 1;
  uint private constant _MAKING_INTERNAL_CALLS = 2;
  uint private _internal_calls_status;
  modifier makesInternalCalls() {
    _internal_calls_status = _MAKING_INTERNAL_CALLS;
    _;
    _internal_calls_status = _NOT_MAKING_INTERNAL_CALLS;
  }
  function init() internal {
    _internal_calls_status = _NOT_MAKING_INTERNAL_CALLS;
  }
  function isInternalCall() internal view returns (bool) {
    return _internal_calls_status == _MAKING_INTERNAL_CALLS;
  }
  function isContractCall() internal view returns (bool) {
    return _msgSender() != tx.origin;
  }
  function isUserCall() internal view returns (bool) {
    return !isInternalCall() && !isContractCall();
  }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.0;
library SbMath {
  uint internal constant DECIMAL_PRECISION = 1e18;
  /*
  * Multiply two decimal numbers and use normal rounding rules:
  * -round product up if 19'th mantissa digit >= 5
  * -round product down if 19'th mantissa digit < 5
  *
  * Used only inside the exponentiation, _decPow().
  */
  function decMul(uint x, uint y) internal pure returns (uint decProd) {
    uint prod_xy = x * y;
    decProd = (prod_xy + (DECIMAL_PRECISION / 2)) / DECIMAL_PRECISION;
  }
  /*
  * _decPow: Exponentiation function for 18-digit decimal base, and integer exponent n.
  *
  * Uses the efficient "exponentiation by squaring" algorithm. O(log(n)) complexity.
  *
  * The exponent is capped to avoid reverting due to overflow. The cap 525600000 equals
  * "minutes in 1000 years": 60 * 24 * 365 * 1000
  */
  function _decPow(uint _base, uint _minutes) internal pure returns (uint) {
    if (_minutes > 525_600_000) _minutes = 525_600_000;  // cap to avoid overflow
    if (_minutes == 0) return DECIMAL_PRECISION;
    uint y = DECIMAL_PRECISION;
    uint x = _base;
    uint n = _minutes;
    // Exponentiation-by-squaring
    while (n > 1) {
      if (n % 2 == 0) {
        x = decMul(x, x);
        n = n / 2;
      } else { // if (n % 2 != 0)
        y = decMul(x, y);
        x = decMul(x, x);
        n = (n - 1) / 2;
      }
    }
    return decMul(x, y);
  }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
interface IAdminControl {
  function hasRole(uint8 _role, address _account) external view returns (bool);
  function SUPER_ADMIN() external view returns (uint8);
  function ADMIN() external view returns (uint8);
  function SERVICE_ADMIN() external view returns (uint8);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
/*
 * @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 GSN 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 memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}