Contract Source Code:
File 1 of 1 : PreSale
pragma solidity 0.8.28;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
_nonReentrantBefore();
_;
_nonReentrantAfter();
}
function _nonReentrantBefore() private {
// On the first call to nonReentrant, _status will be _NOT_ENTERED
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
}
function _nonReentrantAfter() private {
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
// File: @openzeppelin/contracts/utils/Context.sol
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// File: @openzeppelin/contracts/access/Ownable.sol
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// File: @openzeppelin/contracts/utils/Address.sol
/**
* @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
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @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");
(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 functionCallWithValue(target, data, 0, "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");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) 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(errorMessage);
}
}
}
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
}
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
// File: renqFinanceUpdate.sol
//SPDX-License-Identifier: MIT
interface Aggregator {
function latestRoundData()
external
view
returns (
uint80 roundId,
int256 answer,
uint256 startedAt,
uint256 updatedAt,
uint80 answeredInRound
);
}
contract PreSale is ReentrancyGuard, Ownable {
uint256 public presaleId;
uint256 public USDT_MULTIPLIER = (10**6);
uint256 public ETH_MULTIPLIER = (10**18);
address public fundReceiver;
uint256 public referralReward = 5; // (e.g., 5 means 5%)
uint256 public totalReferralsDistributed;
struct Referral {
address referrer;
uint256 tokensEarned; // Tokens earned from this referral
}
mapping(address => Referral[]) public referrals;
mapping(address => uint256) public totalReferralEarnings;
struct Presale {
uint256 startTime;
uint256 endTime;
uint256 price;
uint256 Sold;
uint256 tokensToSell;
uint256 amountRaised;
bool Active;
}
struct ClaimData {
uint256 totalAmount;
}
uint256 public silverBonusAmount = 250 * USDT_MULTIPLIER;
uint256 public goldBonusAmount = 500 * USDT_MULTIPLIER;
uint256 public platinumBonusAmount = 1000 * USDT_MULTIPLIER;
uint256 public diamondBonusAmount = 2500 * USDT_MULTIPLIER;
struct BonusReward {
uint256 silver;
uint256 gold;
uint256 platinum;
uint256 diamond;
}
// silver, gold, platinum, diamond
BonusReward public bonusReward = BonusReward(5, 7, 10, 15);
IERC20Metadata public USDTInterface = IERC20Metadata(0xdAC17F958D2ee523a2206206994597C13D831ec7);
Aggregator internal aggregatorETHInterface = Aggregator(0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419);
// https://docs.chain.link/docs/ethereum-addresses/ => (ETH / USD)
mapping(uint256 => bool) public paused;
mapping(uint256 => Presale) public presale;
mapping(address => ClaimData) public userClaimData;
address public SaleToken;
event PresaleCreated(
uint256 indexed _id,
uint256 _totalTokens,
uint256 _startTime,
uint256 _endTime
);
event TokensBought(
address indexed user,
address indexed purchaseToken,
uint256 tokensBought,
uint256 amountPaid,
uint256 timestamp
);
event PresaleTokenAddressUpdated(
address indexed prevValue,
address indexed newValue,
uint256 timestamp
);
event PresalePaused(uint256 indexed id, uint256 timestamp);
event PresaleUnpaused(uint256 indexed id, uint256 timestamp);
constructor(uint256 _price, uint256 _tokensToSell, address _fundReceiver, address _saleToken) {
presaleId++;
presale[presaleId] = Presale(
0,
0,
_price,
0,
_tokensToSell,
0,
false
);
emit PresaleCreated(presaleId, _tokensToSell, 0, 0);
fundReceiver = _fundReceiver;
SaleToken = _saleToken;
}
function startPresale() public onlyOwner {
presale[presaleId].startTime = block.timestamp;
presale[presaleId].Active = true;
}
function endPresale() public onlyOwner {
require(
presale[presaleId].Active = true,
"This presale is already Inactive"
);
presale[presaleId].endTime = block.timestamp;
presale[presaleId].Active = false;
}
// /**
// * @dev Update a new presale
// * @param _price Per USD price should be multiplied with token decimals
// * @param _tokensToSell No of tokens to sell without denomination. If 1 million tokens to be sold then - 1_000_000 has to be passed
// */
function updatePresale(
uint256 _price
) external onlyOwner {
presale[presaleId].price = _price;
}
/**
* @dev to update bonusReward for purchases
* @param _silver % for silver buyer
* @param _gold % for gold buyer
* @param _platinum % for platinum buyer
* @param _diamond % for diamond buyer
*/
function updateBonusRewardAmount(uint256 _silver, uint256 _gold, uint256 _platinum, uint256 _diamond) external onlyOwner {
bonusReward.silver = _silver;
bonusReward.gold = _gold;
bonusReward.platinum = _platinum;
bonusReward.diamond = _diamond;
}
/**
* @dev to update Bonus Amount for purchases
* @param _silver for silverBonusAmount
* @param _gold for goldBonusAmount
* @param _platinum for platinumBonusAmount
* @param _diamond for diamondBonusAmount
*/
function updateBonusReward(uint256 _silver, uint256 _gold, uint256 _platinum, uint256 _diamond) external onlyOwner {
silverBonusAmount = _silver;
goldBonusAmount = _gold;
platinumBonusAmount = _platinum;
diamondBonusAmount = _diamond;
}
/**
* @dev to update referralReward
* @param _referralReward for referralReward
*/
function updateReferralReward(uint256 _referralReward) external onlyOwner {
referralReward = _referralReward;
}
/**
* @dev To update the fund receiving wallet
* @param _wallet address of wallet to update
*/
function changeFundWallet(address _wallet) external onlyOwner {
require(_wallet != address(0), "Invalid parameters");
fundReceiver = _wallet;
}
/**
* @dev To update the USDT Token address
* @param _newAddress Sale token address
*/
function changeUSDTToken(address _newAddress) external onlyOwner {
require(_newAddress != address(0), "Zero token address");
USDTInterface = IERC20Metadata(_newAddress);
}
/**
* @dev To pause the presale
*/
function pausePresale() external onlyOwner {
require(!paused[presaleId], "Already paused");
paused[presaleId] = true;
emit PresalePaused(presaleId, block.timestamp);
}
/**
* @dev To unpause the presale
*/
function unPausePresale()
external
onlyOwner
{
require(paused[presaleId], "Not paused");
paused[presaleId] = false;
emit PresaleUnpaused(presaleId, block.timestamp);
}
/**
* @dev To get latest ETH price in 10**18 format
*/
function getLatestETHPrice() public view returns (uint256) {
(, int256 price, , , ) = aggregatorETHInterface.latestRoundData();
price = (price * (10**10));
return uint256(price);
}
modifier checkSaleState(uint256 _id, uint256 amount) {
require(
block.timestamp >= presale[_id].startTime &&
presale[_id].Active == true,
"Invalid time for buying"
);
require(
amount > 0 && amount <= presale[_id].tokensToSell-presale[_id].Sold,
"Invalid sale amount"
);
_;
}
function addReferral(address _referrer, address _referee, uint256 _tokensEarned) internal {
referrals[_referrer].push(Referral(_referee, _tokensEarned));
totalReferralEarnings[_referrer] += _tokensEarned;
}
function getReferrals(address _referrer) public view returns (Referral[] memory) {
return referrals[_referrer];
}
function getTotalReferralEarnings(address _referrer) public view returns (uint256) {
return totalReferralEarnings[_referrer];
}
/**
* @dev To buy into a presale using USDT
* @param usdAmount Usdt amount to buy tokens
*/
function buyWithUSDT(uint256 usdAmount, address referrer)
external
checkSaleState(presaleId, usdtToTokens(presaleId, usdAmount))
returns (bool)
{
uint256 tokens = usdtToTokens(presaleId, usdAmount);
require(!paused[presaleId], "Presale paused");
require(presale[presaleId].Active == true, "Presale is not active yet");
require(presale[presaleId].Sold + tokens <= presale[presaleId].tokensToSell,
"Amount should be less than total tokens sell amount");
presale[presaleId].amountRaised += usdAmount;
if (referrer != address(0) && referrer != msg.sender && userClaimData[referrer].totalAmount > 0) {
uint256 reward = (tokens * referralReward) / 100;
addReferral(referrer, msg.sender, reward);
IERC20(SaleToken).transfer(referrer, reward);
totalReferralsDistributed += reward;
}
uint256 bonusRewardAmount = checkBounusRewardAmount(usdAmount, tokens);
tokens = tokens + bonusRewardAmount;
presale[presaleId].Sold += tokens;
if (userClaimData[_msgSender()].totalAmount > 0) {
userClaimData[_msgSender()].totalAmount += tokens;
} else {
userClaimData[_msgSender()] = ClaimData(tokens);
}
uint256 ourAllowance = USDTInterface.allowance(
_msgSender(),
address(this)
);
require(usdAmount <= ourAllowance, "Make sure to add enough allowance");
(bool success, ) = address(USDTInterface).call(
abi.encodeWithSignature(
"transferFrom(address,address,uint256)",
_msgSender(),
fundReceiver,
usdAmount
)
);
require(success, "Token payment failed");
bool status = IERC20(SaleToken).transfer(msg.sender, tokens);
require(status, "Token transfer failed");
emit TokensBought(
_msgSender(),
address(USDTInterface),
tokens,
usdAmount,
block.timestamp
);
return true;
}
/**
* @dev To buy into a presale using ETH
*/
function buyWithEth(address referrer)
external
payable
checkSaleState(presaleId, ethToTokens(presaleId, msg.value))
nonReentrant
returns (bool)
{
uint256 usdAmount = (msg.value * getLatestETHPrice() * USDT_MULTIPLIER) / (ETH_MULTIPLIER * ETH_MULTIPLIER);
uint256 tokens = usdtToTokens(presaleId, usdAmount);
require(presale[presaleId].Sold + tokens <= presale[presaleId].tokensToSell,
"Amount should be less than total tokens sell amount");
require(!paused[presaleId], "Presale paused");
require(presale[presaleId].Active == true, "Presale is not active yet");
if (referrer != address(0) && referrer != msg.sender && userClaimData[referrer].totalAmount > 0) {
uint256 reward = (tokens * referralReward) / 100;
addReferral(referrer, msg.sender, reward);
IERC20(SaleToken).transfer(referrer, reward);
totalReferralsDistributed += reward;
presale[presaleId].Sold += reward;
}
uint256 bonusRewardAmount = checkBounusRewardAmount(usdAmount, tokens);
tokens = tokens + bonusRewardAmount;
presale[presaleId].Sold += tokens;
presale[presaleId].amountRaised += usdAmount;
if (userClaimData[_msgSender()].totalAmount > 0) {
userClaimData[_msgSender()].totalAmount += tokens;
} else {
userClaimData[_msgSender()] = ClaimData(tokens);
}
sendValue(payable(fundReceiver), msg.value);
bool status = IERC20(SaleToken).transfer(msg.sender, tokens);
require(status, "Token transfer failed");
emit TokensBought(
_msgSender(),
address(0),
tokens,
msg.value,
block.timestamp
);
return true;
}
/**
* @dev Helper funtion to get bonusRewardAmount for given usdAmount
* @param usdAmount usdt Amount
* @param tokens token Amount
*/
function checkBounusRewardAmount(uint256 usdAmount, uint256 tokens) public view returns (uint256 reward) {
if (usdAmount >= diamondBonusAmount) {
reward = (tokens * bonusReward.diamond) / 100;
}
else if (usdAmount >= platinumBonusAmount) {
reward = (tokens * bonusReward.platinum) / 100;
} else if (usdAmount >= goldBonusAmount) {
reward = (tokens * bonusReward.gold) / 100;
} else if (usdAmount >= silverBonusAmount) {
reward = (tokens * bonusReward.silver) / 100;
}
}
/**
* @dev Helper funtion to get ETH price for given amount
* @param _id Presale id
* @param amount No of tokens to buy
*/
function ethBuyHelper(uint256 _id, uint256 amount)
external
view
returns (uint256 ethAmount)
{
uint256 usdPrice = (amount * presale[_id].price);
ethAmount = (usdPrice * ETH_MULTIPLIER) / (getLatestETHPrice() * 10**IERC20Metadata(SaleToken).decimals());
}
/**
* @dev Helper funtion to get USDT price for given amount
* @param _id Presale id
* @param amount No of tokens to buy
*/
function usdtBuyHelper(uint256 _id, uint256 amount)
external
view
returns (uint256 usdPrice)
{
usdPrice = (amount * presale[_id].price) / 10**IERC20Metadata(SaleToken).decimals();
}
/**
* @dev Helper funtion to get tokens for eth amount
* @param _id Presale id
* @param amount No of eth
*/
function ethToTokens(uint256 _id, uint256 amount)
public
view
returns (uint256 _tokens)
{
uint256 usdAmount = amount * getLatestETHPrice() * USDT_MULTIPLIER / (ETH_MULTIPLIER * ETH_MULTIPLIER);
_tokens = usdtToTokens(_id, usdAmount);
}
/**
* @dev Helper funtion to get tokens for given usdt amount
* @param _id Presale id
* @param amount No of usdt
*/
function usdtToTokens(uint256 _id, uint256 amount)
public
view
returns (uint256 _tokens)
{
_tokens = (amount * presale[_id].price) / USDT_MULTIPLIER;
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Low balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "ETH Payment failed");
}
function WithdrawTokens(address _token, uint256 amount) external onlyOwner {
IERC20(_token).transfer(fundReceiver, amount);
}
function WithdrawContractFunds(uint256 amount) external onlyOwner {
sendValue(payable(fundReceiver), amount);
}
}