Contract

0x2397D67ea0A3D0105F6C417BBCdAFC1927b0692A

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Sonic LogoSonic LogoSonic Logo49.958526257322296598 S

S Value

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Add Presales Use...6468302024-12-19 2:12:3047 hrs ago1734574350IN
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Contract Source Code Verified (Exact Match)

Contract Name:
SilverMint

Compiler Version
v0.8.20+commit.a1b79de6

Optimization Enabled:
Yes with 10 runs

Other Settings:
paris EvmVersion
File 1 of 15 : SilverMint.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/access/Ownable2Step.sol";
import "@openzeppelin/contracts/utils/Strings.sol";

import 'contracts/Integrations/Gelato/AutomateTaskCreator.sol';

interface ISilver {
	function mint(address _to, uint256 _amount) external;
}

struct FarmsMint {
	address farmMultisig;
	uint256 minted;
	uint256 toMintPerDay;
	uint256 yearsLeft;
	uint256 daysLeft;
	uint256 lastExecution;
	bytes32 taskId;
}

struct PresalesMint {
	uint256 minted;
	uint256 toMintPerDay;
	uint256 amountPurchased;
	uint256 lastExecution;
	bytes32 taskId;
}

/// @title SilverMint
/// @author github.com/SifexPro
/// @notice This contract handles the minting of Silver tokens on the Sonic network
contract SilverMint is AutomateTaskCreator, Ownable2Step {
	// Supplies
	uint256 public immutable MAX_SUPPLY;
	uint256 public constant TEAM_SUPPLY = 500_000 ether;
	uint256 public constant LIQUIDITY_SUPPLY = 200_000 ether;
	uint256 public constant YEARLY_FARMS_SUPPLY = 1_000_000 ether;
	uint256 public constant PRESALES_SUPPLY = 300_000 ether;

	// Utils variables
	ISilver public silver;
	address public teamMultisig;
	FarmsMint public farmsMint;
	mapping(address => PresalesMint) public presalesMint;

	// Presales variables
	uint256 public PRESALES_TO_MINT;
	uint256 public PRESALES_MINTED;

	// Mint event
	event Minted(address indexed to, uint256 amount);
	event FarmMinted(address indexed to, uint256 amountPerDay, uint256 totalMinted);
	event PresalesMinted(address indexed to, uint256 amountPerDay, uint256 totalMinted);

	// Presales events
	event PresalesAddedUser(address indexed user, uint256 amountPurchased);

	// Gelato events
	event GelatoTaskCreated(bytes32 id);
	event GelatoTaskCanceled(bytes32 id);
	event GelatoFeesCheck(uint256 fees, address token);

	// Events for Misc
	event WithdrawnNative(address tresory, uint256 amount);
	event EditedTeamMultisig(address indexed teamMultisig);

	// Constructor
	constructor(address _silver, address _teamMultisig, address _automate) AutomateTaskCreator(_automate) Ownable(msg.sender) {
		MAX_SUPPLY = (YEARLY_FARMS_SUPPLY * 9) + TEAM_SUPPLY + LIQUIDITY_SUPPLY + PRESALES_SUPPLY;
		silver = ISilver(_silver);
		teamMultisig = _teamMultisig;
    }


	// Mint system

	/**
	 * @dev Mint function
	 * @param _to Address of user
	 * @param _amount Amount of tokens to mint
	 */
	function mint(address _to, uint256 _amount) private {
		require(IERC20(address(silver)).totalSupply() + _amount <= MAX_SUPPLY, "Max supply reached");

		silver.mint(_to, _amount);
		
		emit Minted(_to, _amount);
	}

	/**
	 * @dev Start minting for team and liquidity
	 * @notice Only owner can call this function once
	 */
	bool mintStarted = false;
	function startSilverMint() public onlyOwner {
		require(!mintStarted, "Mint already started");
		mintStarted = true;

		mint(teamMultisig, TEAM_SUPPLY);
		mint(teamMultisig, LIQUIDITY_SUPPLY);

		farmsMint = FarmsMint(teamMultisig, 0, YEARLY_FARMS_SUPPLY / 365, 9, 365, 0, bytes32(""));
		_mintFarms();
		createTaskMintFarms();
	}


	// Farm's mint

	/**
	 * @dev Mint for farms (internal function)
	 */
	function _mintFarms() private {
		farmsMint.minted += farmsMint.toMintPerDay;
		farmsMint.daysLeft--;
		farmsMint.lastExecution = block.timestamp;
		mint(farmsMint.farmMultisig, farmsMint.toMintPerDay);

		emit FarmMinted(farmsMint.farmMultisig, farmsMint.toMintPerDay, farmsMint.minted);
	}

	/**
	 * @dev Mint for farms (daily function by Gelato)
	 */
	function mintFarms() public onlyDedicatedMsgSender {
		require(farmsMint.yearsLeft > 0, "No more mints left");
		require(block.timestamp - (farmsMint.lastExecution - 1 hours) >= 1 days, "Mint only once per day");

		if (farmsMint.daysLeft == 1) {
			farmsMint.yearsLeft--;
			farmsMint.daysLeft = 366; //365, + 1 for leap year
		}
		if (farmsMint.yearsLeft == 0) {
			cancelTaskMintFarms();
			farmsMint.daysLeft = 1;
		}

		_mintFarms();

		(uint256 fee, address feeToken) = _getFeeDetails();

        _transfer(fee, feeToken);
		emit GelatoFeesCheck(fee, feeToken);
	}


	// Presales

	/**
	 * @dev Mint for presales (internal function)
	 * @param _to Address of user
	 */
	function _mintPresales(address _to) private {
		presalesMint[_to].minted += presalesMint[_to].toMintPerDay;
		presalesMint[_to].lastExecution = block.timestamp;
		PRESALES_MINTED += presalesMint[_to].toMintPerDay;
		mint(_to, presalesMint[_to].toMintPerDay);

		emit PresalesMinted(_to, presalesMint[_to].toMintPerDay, presalesMint[_to].minted);
	}

	/**
	 * @dev Mint for presales for specific user (daily function executed by Gelato)
	 * @param _to Address of user
	 */
	function mintPresales(address _to) public onlyDedicatedMsgSender {
		require(presalesMint[_to].amountPurchased > 0, "No presales bought");
		require(presalesMint[_to].toMintPerDay > 0 || presalesMint[_to].minted < presalesMint[_to].amountPurchased, "No more presales to mint");
		require(block.timestamp - (presalesMint[_to].lastExecution - 1 hours) >= 1 days, "Mint only once per day");
		
		if (PRESALES_MINTED >= PRESALES_SUPPLY) {
			cancelTaskMintPresales(_to);
			return;
		}
		
		if(presalesMint[_to].minted + presalesMint[_to].toMintPerDay > presalesMint[_to].amountPurchased)
			presalesMint[_to].toMintPerDay = presalesMint[_to].amountPurchased - presalesMint[_to].minted;
		if (PRESALES_MINTED + presalesMint[_to].toMintPerDay > PRESALES_SUPPLY)
			presalesMint[_to].toMintPerDay = PRESALES_SUPPLY - PRESALES_MINTED;
		
		_mintPresales(_to);

		if (presalesMint[_to].minted == presalesMint[_to].amountPurchased || PRESALES_MINTED == PRESALES_SUPPLY) {
			presalesMint[_to].toMintPerDay = 0;
			cancelTaskMintPresales(_to);
		}
		
		(uint256 fee, address feeToken) = _getFeeDetails();
        _transfer(fee, feeToken);

		emit GelatoFeesCheck(fee, feeToken);
	}

	/**
	 * @dev Add user to presales (from SilverPresales)
	 * @param _to Address of user
	 * @param _amount Amount of tokens to mint (at 0.75% per day)
	 */
	function addPresalesUser(address _to, uint256 _amount) public onlyOwner {
		require(PRESALES_TO_MINT + _amount <= PRESALES_SUPPLY, "Max presales supply reached");
		require(presalesMint[_to].amountPurchased == 0, "User already added");
		require(_amount >= 10 ether, "amount too low (min 10 $AG)");

		PRESALES_TO_MINT += _amount;
		presalesMint[_to] = PresalesMint(0, ((_amount * 10) * 75) / 100000, _amount, 0, bytes32(""));
		_mintPresales(_to);
		createTaskMintPresales(_to);

		emit PresalesAddedUser(_to, _amount);
	}


	// Gelato functions

	/**
	 * @dev Create task for minting farms
	 */
	function createTaskMintFarms() private {
		require(farmsMint.taskId == bytes32(""), 'Task already created.');

		uint256 execTime = 1 days;

		bytes memory execData = abi.encodeCall(this.mintFarms, ());

		ModuleData memory moduleData = ModuleData({
			modules: new Module[](2),
			args: new bytes[](2)
		});

		moduleData.modules[0] = Module.PROXY;
		moduleData.modules[1] = Module.TRIGGER;
	
		moduleData.args[0] = _proxyModuleArg();
		moduleData.args[1] = _timeTriggerModuleArg(
			uint128(farmsMint.lastExecution + execTime) * 1000, 
			uint128(execTime) * 1000
		);

		bytes32 taskId = _createTask(address(this), execData, moduleData, ETH);
	
		farmsMint.taskId = taskId;
		
		emit GelatoTaskCreated(taskId);
	}
	
	/**
	 * @dev Cancel task for minting farms (when farms are fully minted (9 years))
	 */
	function cancelTaskMintFarms() private {
		bytes32 taskId = farmsMint.taskId;
		if (taskId == bytes32("")) return;

		_cancelTask(taskId);
		
		farmsMint.taskId = bytes32("");
		
		emit GelatoTaskCanceled(taskId);
	}

	/**
	 * @dev Create task for minting presales for specific user
	 * @param _to Address of user
	 */
	function createTaskMintPresales(address _to) private {
		require(presalesMint[_to].taskId == bytes32(""), 'Task already created.');

		uint256 execTime = 1 days;

		bytes memory execData = abi.encodeCall(this.mintPresales, (_to));

		ModuleData memory moduleData = ModuleData({
			modules: new Module[](2),
			args: new bytes[](2)
		});

		moduleData.modules[0] = Module.PROXY;
		moduleData.modules[1] = Module.TRIGGER;
	
		moduleData.args[0] = _proxyModuleArg();
		moduleData.args[1] = _timeTriggerModuleArg(
			uint128(presalesMint[_to].lastExecution + execTime) * 1000, 
			uint128(execTime) * 1000
		);

		bytes32 taskId = _createTask(address(this), execData, moduleData, ETH);
	
		presalesMint[_to].taskId = taskId;
		
		emit GelatoTaskCreated(taskId);
	}

	/**
	 * @dev Cancel task for minting presales for specific user (when presales are fully minted)
	 * @param _to Address of user
	 */
	function cancelTaskMintPresales(address _to) private {
		bytes32 taskId = presalesMint[_to].taskId;
		if (taskId == bytes32("")) return;

		_cancelTask(taskId);
		
		presalesMint[_to].taskId = bytes32("");
		
		emit GelatoTaskCanceled(taskId);
	}


	// Internal functions

	function editMultisig(address newMultisig) public onlyMultisig {
		teamMultisig = newMultisig;
		farmsMint.farmMultisig = newMultisig;
		emit EditedTeamMultisig(newMultisig);
	}

	function withdrawNative() public onlyOwner {
		uint256 balance = address(this).balance;
        require(balance > 0, 'No Native to withdraw');

		address payable _tresory = payable(teamMultisig);
		(bool success, ) = _tresory.call{value:balance}("");
		require(success, "Transaction failed");

		emit WithdrawnNative(_tresory, balance);
	}
	

	// modifiers

	modifier onlyMultisig() {
		require(msg.sender == teamMultisig, 'Not authorized');
		_;
	}


	// Receive function (to receive FTM)

	receive() external payable {}
}

File 2 of 15 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../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.
 *
 * The initial owner is set to the address provided by the deployer. 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;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @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 {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @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 {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _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 3 of 15 : Ownable2Step.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.20;

import {Ownable} from "./Ownable.sol";

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is specified at deployment time in the constructor for `Ownable`. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2Step is Ownable {
    address private _pendingOwner;

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

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

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() public virtual {
        address sender = _msgSender();
        if (pendingOwner() != sender) {
            revert OwnableUnauthorizedAccount(sender);
        }
        _transferOwnership(sender);
    }
}

File 4 of 15 : IERC20Permit.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

File 5 of 15 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}

File 6 of 15 : SafeERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC20Permit} from "../extensions/IERC20Permit.sol";
import {Address} from "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev An operation with an ERC20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0;
    }
}

File 7 of 15 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)

pragma solidity ^0.8.20;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error AddressInsufficientBalance(address account);

    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedInnerCall();

    /**
     * @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://consensys.net/diligence/blog/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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert AddressInsufficientBalance(address(this));
        }

        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert FailedInnerCall();
        }
    }

    /**
     * @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 or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {FailedInnerCall} error.
     *
     * 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.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @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`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
     * unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {FailedInnerCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
     */
    function _revert(bytes memory returndata) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert FailedInnerCall();
        }
    }
}

File 8 of 15 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

File 9 of 15 : Math.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol)

pragma solidity ^0.8.20;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Muldiv operation overflow.
     */
    error MathOverflowedMulDiv();

    enum Rounding {
        Floor, // Toward negative infinity
        Ceil, // Toward positive infinity
        Trunc, // Toward zero
        Expand // Away from zero
    }

    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds towards infinity instead
     * of rounding towards zero.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        if (b == 0) {
            // Guarantee the same behavior as in a regular Solidity division.
            return a / b;
        }

        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
     * denominator == 0.
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
     * Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0 = x * y; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            if (denominator <= prod1) {
                revert MathOverflowedMulDiv();
            }

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator.
            // Always >= 1. See https://cs.stackexchange.com/q/138556/92363.

            uint256 twos = denominator & (0 - denominator);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
            // works in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
     * towards zero.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0);
        }
    }

    /**
     * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
     */
    function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
        return uint8(rounding) % 2 == 1;
    }
}

File 10 of 15 : SignedMath.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.20;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

File 11 of 15 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Strings.sol)

pragma solidity ^0.8.20;

import {Math} from "./math/Math.sol";
import {SignedMath} from "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant HEX_DIGITS = "0123456789abcdef";
    uint8 private constant ADDRESS_LENGTH = 20;

    /**
     * @dev The `value` string doesn't fit in the specified `length`.
     */
    error StringsInsufficientHexLength(uint256 value, uint256 length);

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toStringSigned(int256 value) internal pure returns (string memory) {
        return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value)));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        uint256 localValue = value;
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = HEX_DIGITS[localValue & 0xf];
            localValue >>= 4;
        }
        if (localValue != 0) {
            revert StringsInsufficientHexLength(value, length);
        }
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal
     * representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

File 12 of 15 : AutomateModuleHelper.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.14;

import "./Types.sol";

abstract contract AutomateModuleHelper {
    function _resolverModuleArg(
        address _resolverAddress,
        bytes memory _resolverData
    ) internal pure returns (bytes memory) {
        return abi.encode(_resolverAddress, _resolverData);
    }

    function _proxyModuleArg() internal pure returns (bytes memory) {
        return bytes("");
    }

    function _singleExecModuleArg() internal pure returns (bytes memory) {
        return bytes("");
    }

    function _web3FunctionModuleArg(
        string memory _web3FunctionHash,
        bytes memory _web3FunctionArgsHex
    ) internal pure returns (bytes memory) {
        return abi.encode(_web3FunctionHash, _web3FunctionArgsHex);
    }

    function _timeTriggerModuleArg(uint128 _start, uint128 _interval)
        internal
        pure
        returns (bytes memory)
    {
        bytes memory triggerConfig = abi.encode(_start, _interval);

        return abi.encode(TriggerType.TIME, triggerConfig);
    }

    function _cronTriggerModuleArg(string memory _expression)
        internal
        pure
        returns (bytes memory)
    {
        bytes memory triggerConfig = abi.encode(_expression);

        return abi.encode(TriggerType.CRON, triggerConfig);
    }

    function _eventTriggerModuleArg(
        address _address,
        bytes32[][] memory _topics,
        uint256 _blockConfirmations
    ) internal pure returns (bytes memory) {
        bytes memory triggerConfig = abi.encode(
            _address,
            _topics,
            _blockConfirmations
        );

        return abi.encode(TriggerType.EVENT, triggerConfig);
    }

    function _blockTriggerModuleArg() internal pure returns (bytes memory) {
        bytes memory triggerConfig = abi.encode(bytes(""));

        return abi.encode(TriggerType.BLOCK, triggerConfig);
    }
}

File 13 of 15 : AutomateReady.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.14;

import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "./Types.sol";

/**
 * @dev Inherit this contract to allow your smart contract to
 * - Make synchronous fee payments.
 * - Have call restrictions for functions to be automated.
 */
// solhint-disable private-vars-leading-underscore
abstract contract AutomateReady {
    IAutomate public immutable automate;
    address public immutable dedicatedMsgSender;
    address private immutable feeCollector;
    address internal constant ETH = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

    /**
     * @dev
     * Only tasks created by _taskCreator defined in constructor can call
     * the functions with this modifier.
     */
    modifier onlyDedicatedMsgSender() {
        require(msg.sender == dedicatedMsgSender, "Only dedicated msg.sender");
        _;
    }

    /**
     * @dev
     * _taskCreator is the address which will create tasks for this contract.
     */
    constructor(address _automate, address _taskCreator) {
        automate = IAutomate(_automate);
        IGelato gelato = IGelato(IAutomate(_automate).gelato());

        feeCollector = gelato.feeCollector();

        address proxyModuleAddress = IAutomate(_automate).taskModuleAddresses(
            Module.PROXY
        );

        address opsProxyFactoryAddress = IProxyModule(proxyModuleAddress)
            .opsProxyFactory();

        (dedicatedMsgSender, ) = IOpsProxyFactory(opsProxyFactoryAddress)
            .getProxyOf(_taskCreator);
    }

    /**
     * @dev
     * Transfers fee to gelato for synchronous fee payments.
     *
     * _fee & _feeToken should be queried from IAutomate.getFeeDetails()
     */
    function _transfer(uint256 _fee, address _feeToken) internal {
        if (_feeToken == ETH) {
            (bool success, ) = feeCollector.call{value: _fee}("");
            require(success, "_transfer: ETH transfer failed");
        } else {
            SafeERC20.safeTransfer(IERC20(_feeToken), feeCollector, _fee);
        }
    }

    function _getFeeDetails()
        internal
        view
        returns (uint256 fee, address feeToken)
    {
        (fee, feeToken) = automate.getFeeDetails();
    }
}

File 14 of 15 : AutomateTaskCreator.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.14;
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "./AutomateReady.sol";
import {AutomateModuleHelper} from "./AutomateModuleHelper.sol";

/**
 * @dev Inherit this contract to allow your smart contract
 * to be a task creator and create tasks.
 */
//solhint-disable const-name-snakecase
//solhint-disable no-empty-blocks
abstract contract AutomateTaskCreator is AutomateModuleHelper, AutomateReady {
    using SafeERC20 for IERC20;

    IGelato1Balance public constant gelato1Balance =
        IGelato1Balance(0x7506C12a824d73D9b08564d5Afc22c949434755e);

    constructor(address _automate) AutomateReady(_automate, address(this)) {}

    function _depositFunds1Balance(
        uint256 _amount,
        address _token,
        address _sponsor
    ) internal {
        if (_token == ETH) {
            ///@dev Only deposit ETH on goerli for now.
            require(block.chainid == 5, "Only deposit ETH on goerli");
            gelato1Balance.depositNative{value: _amount}(_sponsor);
        } else {
            ///@dev Only deposit USDC on polygon for now.
            require(
                block.chainid == 137 &&
                    _token ==
                    address(0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174),
                "Only deposit USDC on polygon"
            );
            IERC20(_token).approve(address(gelato1Balance), _amount);
            gelato1Balance.depositToken(_sponsor, _token, _amount);
        }
    }

    function _createTask(
        address _execAddress,
        bytes memory _execDataOrSelector,
        ModuleData memory _moduleData,
        address _feeToken
    ) internal returns (bytes32) {
        return
            automate.createTask(
                _execAddress,
                _execDataOrSelector,
                _moduleData,
                _feeToken
            );
    }

    function _cancelTask(bytes32 _taskId) internal {
        automate.cancelTask(_taskId);
    }
}

File 15 of 15 : Types.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.12;

enum Module {
    RESOLVER,
    DEPRECATED_TIME,
    PROXY,
    SINGLE_EXEC,
    WEB3_FUNCTION,
    TRIGGER
}

enum TriggerType {
    TIME,
    CRON,
    EVENT,
    BLOCK
}

struct ModuleData {
    Module[] modules;
    bytes[] args;
}

interface IAutomate {
    function createTask(
        address execAddress,
        bytes calldata execDataOrSelector,
        ModuleData calldata moduleData,
        address feeToken
    ) external returns (bytes32 taskId);

    function cancelTask(bytes32 taskId) external;

    function getFeeDetails() external view returns (uint256, address);

    function gelato() external view returns (address payable);

    function taskModuleAddresses(Module) external view returns (address);
}

interface IProxyModule {
    function opsProxyFactory() external view returns (address);
}

interface IOpsProxyFactory {
    function getProxyOf(address account) external view returns (address, bool);
}

interface IGelato1Balance {
    function depositNative(address _sponsor) external payable;

    function depositToken(
        address _sponsor,
        address _token,
        uint256 _amount
    ) external;
}

interface IGelato {
    function feeCollector() external view returns (address);
}

Settings
{
  "evmVersion": "paris",
  "optimizer": {
    "enabled": true,
    "runs": 10
  },
  "metadata": {
    "bytecodeHash": "none"
  },
  "viaIR": true,
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_silver","type":"address"},{"internalType":"address","name":"_teamMultisig","type":"address"},{"internalType":"address","name":"_automate","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"AddressInsufficientBalance","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"teamMultisig","type":"address"}],"name":"EditedTeamMultisig","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountPerDay","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"totalMinted","type":"uint256"}],"name":"FarmMinted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"fees","type":"uint256"},{"indexed":false,"internalType":"address","name":"token","type":"address"}],"name":"GelatoFeesCheck","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"GelatoTaskCanceled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"GelatoTaskCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Minted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferStarted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountPurchased","type":"uint256"}],"name":"PresalesAddedUser","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountPerDay","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"totalMinted","type":"uint256"}],"name":"PresalesMinted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"tresory","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"WithdrawnNative","type":"event"},{"inputs":[],"name":"LIQUIDITY_SUPPLY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_SUPPLY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PRESALES_MINTED","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PRESALES_SUPPLY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PRESALES_TO_MINT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"TEAM_SUPPLY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"YEARLY_FARMS_SUPPLY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"addPresalesUser","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"automate","outputs":[{"internalType":"contract IAutomate","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"dedicatedMsgSender","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newMultisig","type":"address"}],"name":"editMultisig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"farmsMint","outputs":[{"internalType":"address","name":"farmMultisig","type":"address"},{"internalType":"uint256","name":"minted","type":"uint256"},{"internalType":"uint256","name":"toMintPerDay","type":"uint256"},{"internalType":"uint256","name":"yearsLeft","type":"uint256"},{"internalType":"uint256","name":"daysLeft","type":"uint256"},{"internalType":"uint256","name":"lastExecution","type":"uint256"},{"internalType":"bytes32","name":"taskId","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"gelato1Balance","outputs":[{"internalType":"contract IGelato1Balance","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"mintFarms","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"}],"name":"mintPresales","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"presalesMint","outputs":[{"internalType":"uint256","name":"minted","type":"uint256"},{"internalType":"uint256","name":"toMintPerDay","type":"uint256"},{"internalType":"uint256","name":"amountPurchased","type":"uint256"},{"internalType":"uint256","name":"lastExecution","type":"uint256"},{"internalType":"bytes32","name":"taskId","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"silver","outputs":[{"internalType":"contract ISilver","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"startSilverMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"teamMultisig","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawNative","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000005851f943ee2957b1748957f26319e4f9edebc1000000000000000000000000fe9777078ca0d60d2e9f489bf0297b433abccdec000000000000000000000000afd37d0558255aa687167560cd3aaeea75c2841e

-----Decoded View---------------
Arg [0] : _silver (address): 0x005851f943ee2957B1748957F26319e4f9EdeBC1
Arg [1] : _teamMultisig (address): 0xfe9777078Ca0d60d2e9F489bF0297B433AbcCdEC
Arg [2] : _automate (address): 0xafd37d0558255aA687167560cd3AaeEa75c2841E

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000005851f943ee2957b1748957f26319e4f9edebc1
Arg [1] : 000000000000000000000000fe9777078ca0d60d2e9f489bf0297b433abccdec
Arg [2] : 000000000000000000000000afd37d0558255aa687167560cd3aaeea75c2841e


Block Transaction Gas Used Reward
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.