/** *Submitted for verification at Etherscan.io on 2021-02-23 */ pragma solidity ^0.5.0; /* ____________________________________________________________________ 1. Notify Reward and send to staking : 90% of this reward deposits 2. Total Rewards : 90% of this contract balance 3. Notifier Rewards : 10 % of this contract balance ____________________________________________________________________ -Codezeros Developers -https://www.codezeros.com/ ____________________________________________________________________ */ library Math { function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } function average(uint256 a, uint256 b) internal pure returns (uint256) { return (a / 2) + (b / 2) + (((a % 2) + (b % 2)) / 2); } } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } contract Context { constructor() internal {} function _msgSender() internal view returns (address payable) { return msg.sender; } function _msgData() internal view returns (bytes memory) { this; return msg.data; } } contract Ownable is Context { address private _owner; event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); constructor() internal { _owner = msg.sender; emit OwnershipTransferred(address(0), _owner); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(isOwner(), "Ownable: caller is not the owner"); _; } function isOwner() public view returns (bool) { return msg.sender == _owner; } function renounceOwnership() public onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } function transferOwnership(address newOwner) public onlyOwner { _transferOwnership(newOwner); } function _transferOwnership(address newOwner) internal { require( newOwner != address(0), "Ownable: new owner is the zero address" ); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } interface IERC20 { // function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval( address indexed owner, address indexed spender, uint256 value ); } library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; assembly { codehash := extcodehash(account) } return (codehash != 0x0 && codehash != accountHash); } function toPayable(address account) internal pure returns (address payable) { return address(uint160(account)); } function sendValue(address payable recipient, uint256 amount) internal { require( address(this).balance >= amount, "Address: insufficient balance" ); (bool success, ) = recipient.call.value(amount)(""); require( success, "Address: unable to send value, recipient may have reverted" ); } } library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { callOptionalReturn( token, abi.encodeWithSelector(token.transfer.selector, to, value) ); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { callOptionalReturn( token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value) ); } function safeApprove( IERC20 token, address spender, uint256 value ) internal { require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); callOptionalReturn( token, abi.encodeWithSelector(token.approve.selector, spender, value) ); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); callOptionalReturn( token, abi.encodeWithSelector( token.approve.selector, spender, newAllowance ) ); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender).sub( value, "SafeERC20: decreased allowance below zero" ); callOptionalReturn( token, abi.encodeWithSelector( token.approve.selector, spender, newAllowance ) ); } function callOptionalReturn(IERC20 token, bytes memory data) private { require(address(token).isContract(), "SafeERC20: call to non-contract"); (bool success, bytes memory returndata) = address(token).call(data); require(success, "SafeERC20: low-level call failed"); if (returndata.length > 0) { require( abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed" ); } } } interface Staking { function notifyRewardAmount() external returns (bool); } contract RewardCollector is Ownable, Staking { using SafeMath for uint256; using SafeERC20 for IERC20; Staking stakingInstance; uint256 notifierFee; uint256 notifyAmount; IERC20 public APE ; constructor(address _presale, address _staking) public { APE = IERC20(_presale); stakingInstance = Staking(_staking); } function rewardDeposits() public view returns (uint256) { return APE.balanceOf(address(this)); } function balanceOf(address account) public view returns (uint256) { return APE.balanceOf(account); } function calculateTenPercent(uint256 amount) public pure returns (uint256) { return amount.mul(100).div(1000); } function calculateNinetyPercent(uint256 amount) public pure returns (uint256) { return amount.mul(900).div(1000); } function notifyRewardAmount() public returns (bool) { return stakingInstance.notifyRewardAmount(); } function notifyExternal() public returns (bool) { notifyRewardAmount(); notifierFee = calculateTenPercent(rewardDeposits()); //-----| Notifier Reward |------------ notifyAmount = calculateNinetyPercent(rewardDeposits()); //-----| For Notify Purpose |--------- APE.safeTransfer(msg.sender, notifierFee); //-----| Send notifier reward |------- APE.safeTransfer(address(stakingInstance), notifyAmount); //-----| Send to staking contract|----- return true; } }