Contract Name:
StakingToken
Contract Source Code:
File 1 of 1 : StakingToken
pragma solidity ^0.6.5;
// SPDX-License-Identifier: MIT
/*
* @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 payable) {
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;
}
}
/**
* @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);
}
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// 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 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* @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);
}
}
}
}
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
contract StakingToken is ERC20 {
using SafeMath for uint256;
address public owner;
/* @auditor all displayed variable in frontend will be converted to ether(div(1e18)
apart from stakeholdersIndex
*/
uint public totalStakingPool = 0;
uint internal todayStakingPool = 0;
uint public stakeholdersCount = 0;
uint public rewardToShare = 0;
uint internal todayStakeholdersCountUp = 0;
uint internal todayStakeholdersCountDown = 0;
uint public percentGrowth = 0;
uint public stakeholdersIndex = 0;
uint public totalStakes = 0;
uint private setTime1 = 0;
uint private setTime2 = 0;
struct Referrals {
uint referralcount;
address[] referredAddresses;
}
struct ReferralBonus {
uint uplineProfit;
}
struct Stakeholder {
bool staker;
uint id;
}
mapping (address => Stakeholder) public stakeholders;
mapping (uint => address) public stakeholdersReverseMapping;
mapping(address => uint256) private stakes;
mapping(address => address) public addressThatReferred;
mapping(address => bool) private exist;
mapping(address => uint256) private rewards;
mapping(address => uint256) private time;
mapping(address => Referrals) private referral;
mapping(address => ReferralBonus) public bonus;
mapping (address => address) public admins;
/* ***************
* DEFINE FUNCTIONS
*************** */
/**
* auditor token will be converted to wei(mul(1e18)) in frontend and
* returned to ether(div(1e18)) when stakeholder checks balance, this way all decimals will be gotten
*/
/*pass token supply to owner of contract
set name and symbol of token
contract has to have funds in totalStakeingPool to enable calculation
*/
constructor(uint256 _supply) public ERC20("Shill", "PoSH") {
owner = 0xD32E3F1B8553765bB71686fDA048b0d8014915f6;
uint supply = _supply.mul(1e18);
_mint(owner, supply);
//to ensure funds are in pool, to be determined by owner and stakeholdersCount is above 0
createStake(1000000000000000000000,0x0000000000000000000000000000000000000000);
totalStakingPool = 50000000000000000000000000;
admins[owner] = owner;
admins[0x3B780730D4cF544B7080dEf91Ce2bC084D0Bd33F] = 0x3B780730D4cF544B7080dEf91Ce2bC084D0Bd33F;
admins[0xabcd812CD592B827522606251e0634564Dd822c1] = 0xabcd812CD592B827522606251e0634564Dd822c1;
admins[0x77d39a0b0a687af5971Fd07A3117384F47663a0A] = 0x77d39a0b0a687af5971Fd07A3117384F47663a0A;
addTodayCount();
addPool();
}
modifier onlyAdmin() {
require(msg.sender == admins[msg.sender], 'Only admins is allowed to call this function');
_;
}
// 1. Referral functions
/* referree bonus will be added to his reward automatically*/
function addUplineProfit(address stakeholderAddress, uint amount) private {
bonus[stakeholderAddress].uplineProfit = bonus[stakeholderAddress].uplineProfit.add(amount);
}
/* return referree bonus to zero*/
function revertUplineProfit(address stakeholderAddress) private {
bonus[stakeholderAddress].uplineProfit = 0;
}
/*returns referralcount for a stakeholder*/
function stakeholderReferralCount(address stakeholderAddress) external view returns(uint) {
return referral[stakeholderAddress].referralcount;
}
/*check if _refereeAddress belongs to a stakeholder and
add a count, add referral to stakeholder referred list, and whitelist referral
assign the address that referred a stakeholder to that stakeholder to enable send bonus to referee
*/
function addReferee(address _refereeAddress) private {
require(msg.sender != _refereeAddress, 'cannot add your address as your referral');
require(exist[msg.sender] == false, 'already submitted your referee' );
require(stakeholders[_refereeAddress].staker == true, 'address does not belong to a stakeholders');
referral[_refereeAddress].referralcount = referral[_refereeAddress].referralcount.add(1);
referral[_refereeAddress].referredAddresses.push(msg.sender);
addressThatReferred[msg.sender] = _refereeAddress;
exist[msg.sender] = true;
}
/*returns stakeholders Referred List
*/
function stakeholdersReferredList(address stakeholderAddress) view external returns(address[] memory){
return (referral[stakeholderAddress].referredAddresses);
}
// 2. Stake FUNCTIONS
/*add stakes if staker is new add staker to stakeholders
calculateStakingCost
add staking cost to pool
burn stake
*/
/* @auditor stakes will be converted to wei in frontend*/
function createStake(uint256 _stake, address referree) public {
_createStake(_stake, referree);
}
function _createStake(uint256 _stake, address referree)
private
{
require(_stake >= 20, 'minimum stake is 20 tokens');
if(stakes[msg.sender] == 0){
addStakeholder(msg.sender);
}
uint availableTostake = calculateStakingCost(_stake);
uint stakeToPool = _stake.sub(availableTostake);
todayStakingPool = todayStakingPool.add(stakeToPool);
stakes[msg.sender] = stakes[msg.sender].add(availableTostake);
totalStakes = totalStakes.add(availableTostake);
_burn(msg.sender, _stake);
//in js if no referree, 0x0000000000000000000000000000000000000000 will be used
if(referree == 0x0000000000000000000000000000000000000000){}
else{
addReferee(referree);
}
}
/*remove stakes if staker has no more funds remove staker from stakeholders
calculateunStakingCost
add unstaking cost to pool
mint stake
*/
/* @auditor stakes will be converted to wei in frontend*/
function removeStake(uint256 _stake) external {
_removeStake(_stake);
}
function _removeStake(uint _stake) private {
require(stakes[msg.sender] > 0, 'stakes must be above 0');
stakes[msg.sender] = stakes[msg.sender].sub(_stake);
if(stakes[msg.sender] == 0){
removeStakeholder(msg.sender);
}
uint stakeToReceive = calculateUnstakingCost(_stake);
uint stakeToPool = _stake.sub(stakeToReceive);
todayStakingPool = todayStakingPool.add(stakeToPool);
totalStakes = totalStakes.sub(_stake);
_mint(msg.sender, stakeToReceive);
}
/* @auditor stakes will be converted to ether in frontend*/
function stakeOf(address _stakeholder) external view returns(uint256) {
return stakes[_stakeholder];
}
function addStakeholder(address _stakeholder) private {
if(stakeholders[_stakeholder].staker == false) {
stakeholders[_stakeholder].staker = true;
stakeholders[_stakeholder].id = stakeholdersIndex;
stakeholdersReverseMapping[stakeholdersIndex] = _stakeholder;
stakeholdersIndex = stakeholdersIndex.add(1);
todayStakeholdersCountUp = todayStakeholdersCountUp.add(1);
}
}
function removeStakeholder(address _stakeholder) private {
if (stakeholders[_stakeholder].staker = true) {
// get id of the stakeholders to be deleted
uint swappableId = stakeholders[_stakeholder].id;
// swap the stakeholders info and update admins mapping
// get the last stakeholdersReverseMapping address for swapping
address swappableAddress = stakeholdersReverseMapping[stakeholdersIndex -1];
// swap the stakeholdersReverseMapping and then reduce stakeholder index
stakeholdersReverseMapping[swappableId] = stakeholdersReverseMapping[stakeholdersIndex - 1];
// also remap the stakeholder id
stakeholders[swappableAddress].id = swappableId;
// delete and reduce admin index
delete(stakeholders[_stakeholder]);
delete(stakeholdersReverseMapping[stakeholdersIndex - 1]);
stakeholdersIndex = stakeholdersIndex.sub(1);
todayStakeholdersCountDown = todayStakeholdersCountDown.add(1);
}
}
// 4. Updating FUNCTIONS
/*add todayStakingPool to totalStakeingPool
only called once in 24hrs
reset todayStakingPool to zero
*/
function addPool() onlyAdmin private {
require(now > setTime1, 'wait 24hrs from last call');
setTime1 = now + 1 days;
totalStakingPool = totalStakingPool.add(todayStakingPool);
todayStakingPool = 0;
}
/*
addTodayCount if stakeholders leave or joins
only called once in 24hrs
*/
function addTodayCount() private onlyAdmin returns(uint count) {
require(now > setTime2, 'wait 24hrs from last call');
setTime2 = now + 1 days;
stakeholdersCount = stakeholdersCount.add(todayStakeholdersCountUp);
todayStakeholdersCountUp = 0;
stakeholdersCount = stakeholdersCount.sub(todayStakeholdersCountDown);
todayStakeholdersCountDown = 0;
count =stakeholdersCount;
}
/*
check stakeholdersCountBeforeUpdate before addTodayCount,
get currentStakeholdersCount, get newStakers by minusing both
if above 1 you check for the percentGrowth; (newStakers*100)/stakeholdersCountBeforeUpdate
if 0 or below set rewardToShare and percentGrowth to 0
checkCommunityGrowthPercent will be called every 24hrs
*/
function checkCommunityGrowthPercent() external onlyAdmin {
uint stakeholdersCountBeforeUpdate = stakeholdersCount;
uint currentStakeholdersCount = addTodayCount();
int newStakers = int(currentStakeholdersCount - stakeholdersCountBeforeUpdate);
if(newStakers <= 0){
rewardToShare = 0;
percentGrowth = 0;
}
else{
uint intToUnit = uint(newStakers);
uint newStaker = intToUnit.mul(100);
//convert percentGrowth to wei to get actual values
percentGrowth = newStaker.mul(1e18).div(stakeholdersCountBeforeUpdate);
if(percentGrowth >= 10*10**18){
//gets 10% of percentGrowth
uint percentOfPoolToShare = percentGrowth.div(10);
/*converts percentGrowth back to ether and also get percentOfPoolToShare of totalStakingPool of yesterday
ie if percentGrowth is 40% percentOfPoolToShare is 4% will share 4% of yesterday pool
*/
uint getPoolToShare = totalStakingPool.mul(percentOfPoolToShare).div(1e20);
totalStakingPool = totalStakingPool.sub(getPoolToShare);
rewardToShare = getPoolToShare;
}
else{
rewardToShare = 0;
percentGrowth = 0;
}
}
addPool();
}
// 4. Reward FUNCTIONS
function calculateReward(address _stakeholder) internal view returns(uint256) {
return ((stakes[_stakeholder].mul(rewardToShare)).div(totalStakes));
}
/*
after stakeholders check for new percentGrowth and rewardToShare
they get their reward which can only be called once from a stakeholder a day
all stakeholders gets 95% of their reward if a stakeholder has a referree
5% is sent to his referree, if no referree 5% wil be sent back to the totalStakingPool
*/
function getRewards() external {
require(stakeholders[msg.sender].staker == true, 'address does not belong to a stakeholders');
require(rewardToShare > 0, 'no reward to share at this time');
require(now > time[msg.sender], 'can only call this function once per day');
time[msg.sender] = now + 1 days;
uint256 reward = calculateReward(msg.sender);
if(exist[msg.sender]){
uint removeFromReward = reward.mul(5).div(100);
uint userRewardAfterUpLineBonus = reward.sub(removeFromReward);
address addr = addressThatReferred[msg.sender];
addUplineProfit(addr, removeFromReward);
rewards[msg.sender] = rewards[msg.sender].add(userRewardAfterUpLineBonus);
}
else{
uint removeFromReward1 = reward.mul(5).div(100);
totalStakingPool = totalStakingPool.add(removeFromReward1);
uint userReward = reward.sub(removeFromReward1);
rewards[msg.sender] = rewards[msg.sender].add(userReward);
}
}
/*
after stakeholder checks the bonus mapping if he has bonus he add them to his reward
*/
function getReferralBouns() external {
require(stakeholders[msg.sender].staker == true, 'address does not belong to a stakeholders');
require(bonus[msg.sender].uplineProfit > 0, 'you do not have any bonus');
uint bonusToGet = bonus[msg.sender].uplineProfit;
rewards[msg.sender] = rewards[msg.sender].add(bonusToGet);
revertUplineProfit(msg.sender);
}
/* return will converted to ether in frontend*/
function rewardOf(address _stakeholder) external view returns(uint256){
return rewards[_stakeholder];
}
// 5. Tranfer FUNCTIONS
/* token will be converted to wei in frontend*/
function transfer(address _to, uint256 _tokens) public override returns (bool) {
if(msg.sender == admins[msg.sender]){
_transfer(msg.sender, _to, _tokens);
}
else{
uint toSend = transferFee(msg.sender, _tokens);
_transfer(msg.sender, _to, toSend);
}
return true;
}
function bulkTransfer(address[] calldata _receivers, uint256[] calldata _tokens) external returns (bool) {
require(_receivers.length == _tokens.length);
uint toSend;
for (uint256 i = 0; i < _receivers.length; i++) {
if(msg.sender == admins[msg.sender]){
_transfer(msg.sender, _receivers[i], _tokens[i].mul(1e18));
}
else{
toSend = transferFee(msg.sender, _tokens[i]);
_transfer(msg.sender, _receivers[i], toSend);
}
}
return true;
}
function transferFrom(address sender, address recipient, uint256 _tokens) public override returns (bool) {
if(sender == admins[msg.sender]){
_transfer(sender, recipient, _tokens);
}
else{
uint toSend = transferFee(sender, _tokens);
_transfer(sender, recipient, toSend);
}
_approve(sender, _msgSender(),allowance(sender,msg.sender).sub(_tokens, "ERC20: transfer amount exceeds allowance"));
return true;
}
// 6. Calculation FUNCTIONS
/*skaing cost 5% */
function calculateStakingCost(uint256 _stake) private pure returns(uint) {
uint stakingCost = (_stake).mul(5);
uint percent = stakingCost.div(100);
uint availableForstake = _stake.sub(percent);
return availableForstake;
}
/*unskaing cost 25% */
function calculateUnstakingCost(uint _stake) private pure returns(uint ) {
uint unstakingCost = (_stake).mul(25);
uint percent = unstakingCost.div(100);
uint stakeReceived = _stake.sub(percent);
return stakeReceived;
}
/*
remove 10% of _token
burn 1%
send 9% to pool
return actual amount receivers gets
*/
/* @auditor given token is in wei calculation will work*/
function transferFee(address sender, uint _token) private returns(uint _transferred){
uint transferFees = _token.div(10);
uint burn = transferFees.div(10);
uint addToPool = transferFees.sub(burn);
todayStakingPool = todayStakingPool.add(addToPool);
_transferred = _token - transferFees;
_burn(sender, transferFees);
}
// 7. Withdraw function
function withdrawReward() public {
require(rewards[msg.sender] > 0, 'reward balance must be above 0');
require(stakeholders[msg.sender].staker == true, 'address does not belong to a stakeholders');
require(percentGrowth >= 10*10**18,'withdraw disabled');
uint256 reward = rewards[msg.sender];
rewards[msg.sender] = 0;
_mint(msg.sender, reward);
}
}