Contract Name:
StormePresale
Contract Source Code:
File 1 of 1 : StormePresale
/*
* Security Contact: support@storme.io
*/
// SPDX-License-Identifier: MIT
pragma solidity =0.8.7;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
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 substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
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.
*
* _Available since v3.4._
*/
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.
*
* _Available since v3.4._
*/
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.
*
* _Available since v3.4._
*/
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 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) {
return a + b;
}
/**
* @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 a - b;
}
/**
* @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) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting 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 a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting 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) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* 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) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
/**
* @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 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;
}
}
/**
* @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 Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
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);
}
}
contract OwnerWithdrawable is Ownable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
receive() external payable {}
fallback() external payable {}
function withdraw(address token, uint256 amt) public onlyOwner {
IERC20(token).safeTransfer(msg.sender, amt);
}
function withdrawAll(address token) public onlyOwner {
uint256 amt = IERC20(token).balanceOf(address(this));
withdraw(token, amt);
}
function withdrawCurrency(uint256 amt) public onlyOwner {
payable(msg.sender).transfer(amt);
}
// function deposit(address token, uint256 amt) public onlyOwner {
// uint256 allowance = IERC20(token).allowance(msg.sender, address(this));
// require(allowance >= amt, "Check the token allowance");
// IERC20(token).transferFrom(owner(), address(this), amt);
// }
}
/**
* @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) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 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 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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(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) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(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) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason 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 {
// 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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/**
* @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;
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));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
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) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @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, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
/**
* @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);
}
contract StormePresale is OwnerWithdrawable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
using SafeERC20 for IERC20Metadata;
uint256 public rate;
address public saleToken;
uint public saleTokenDec;
uint256 public totalTokensforSale;
uint256 public maxBuyLimit = 7_918_825_433 * 10**18; // 1%
uint256 public minBuyLimit = 0;
address public presaleWallet = 0x60004297d3128f07deb5E04f7e3434f49Ebc8A7e;
//address public DAI = 0x3Cf204795c4995cCf9C1a0B3191F00c01B03C56C; // testnet
address public DAI = 0x6B175474E89094C44Da98b954EedeAC495271d0F; // mainnet
// Whitelist of tokens to buy from
mapping(address => bool) public tokenWL;
// 1 Token price in terms of WL tokens
mapping(address => uint256) public tokenPrices;
address[] public buyers;
bool public isUnlockingStarted;
bool public isPresaleStarted;
uint public presalePhase;
mapping(address => BuyerTokenDetails) public buyersAmount;
mapping(address => uint256) public presaleData;
uint256 public totalTokensSold;
struct BuyerTokenDetails {
uint amount;
bool isClaimed;
uint256 distribution1;
uint256 distribution2;
uint256 distribution3;
uint256 distribution4;
}
struct Stage {
uint256 endTime;
uint256 ethPrice; // price per token in wei
uint256 tokenPrice; // price per token in wei
uint256 tokensAvailable; // tokens available for sale in this stage
uint256 tokensSold;
}
Stage[45] public stages;
uint256 public currentStage;
uint256 public unlockTime;
constructor() {
// Initialize the stages - Total for presale 197,970,635,836 STORME at 1 ETH = $2550
stages[0] = Stage(1723326659, 0.0000000087 ether, 0.0000222 ether, 45_045_045_045 * 10**18, 0);
stages[1] = Stage(1723326779, 0.0000000174 ether, 0.0000444 ether, 22_522_522_523 * 10**18, 0);
stages[2] = Stage(1723326899, 0.0000000261 ether, 0.0000666 ether, 15_015_015_015 * 10**18, 0);
stages[3] = Stage(1723326899, 0.0000000348 ether, 0.0000888 ether, 11_261_261_261 * 10**18, 0);
stages[4] = Stage(1723326899, 0.0000000435 ether, 0.0001110 ether, 9_009_009_009 * 10**18, 0);
stages[5] = Stage(1723326899, 0.0000000522 ether, 0.0001332 ether, 7_507_507_508 * 10**18, 0);
stages[6] = Stage(1723326899, 0.0000000609 ether, 0.0001554 ether, 6_435_006_436 * 10**18, 0);
stages[7] = Stage(1723326899, 0.0000000696 ether, 0.0001776 ether, 5_630_630_631 * 10**18, 0);
stages[8] = Stage(1723326899, 0.0000000784 ether, 0.0001998 ether, 5_005_005_005 * 10**18, 0);
stages[9] = Stage(1723326899, 0.0000000871 ether, 0.0002220 ether, 4_504_504_505 * 10**18, 0);
stages[10] = Stage(1723326899, 0.0000000958 ether, 0.0002442 ether, 4_095_004_095 * 10**18, 0);
stages[11] = Stage(1723326899, 0.0000001045 ether, 0.0002664 ether, 3_753_753_754 * 10**18, 0);
stages[12] = Stage(1723326899, 0.0000001132 ether, 0.0002886 ether, 3_465_003_465 * 10**18, 0);
stages[13] = Stage(1723326899, 0.0000001219 ether, 0.0003108 ether, 3_217_503_218 * 10**18, 0);
stages[14] = Stage(1723326899, 0.0000001306 ether, 0.0003330 ether, 3_003_003_003 * 10**18, 0);
stages[15] = Stage(1723326899, 0.0000001393 ether, 0.0003552 ether, 2_815_315_315 * 10**18, 0);
stages[16] = Stage(1723326899, 0.0000001480 ether, 0.0003774 ether, 2_649_709_650 * 10**18, 0);
stages[17] = Stage(1723326899, 0.0000001567 ether, 0.0003996 ether, 2_502_502_503 * 10**18, 0);
stages[18] = Stage(1723326899, 0.0000001654 ether, 0.0004218 ether, 2_370_792_371 * 10**18, 0);
stages[19] = Stage(1723326899, 0.0000001741 ether, 0.0004440 ether, 2_252_252_252 * 10**18, 0);
stages[20] = Stage(1723326899, 0.0000001828 ether, 0.0004662 ether, 2_145_002_145 * 10**18, 0);
stages[21] = Stage(1723326899, 0.0000001915 ether, 0.0004884 ether, 2_047_502_048 * 10**18, 0);
stages[22] = Stage(1723326899, 0.0000002002 ether, 0.0005106 ether, 1_958_480_244 * 10**18, 0);
stages[23] = Stage(1723326899, 0.0000002089 ether, 0.0005328 ether, 1_876_876_877 * 10**18, 0);
stages[24] = Stage(1723326899, 0.0000002176 ether, 0.0005550 ether, 1_801_801_802 * 10**18, 0);
stages[25] = Stage(1723326899, 0.0000002264 ether, 0.0005772 ether, 1_732_502_174 * 10**18, 0);
stages[26] = Stage(1723326899, 0.0000002351 ether, 0.0005994 ether, 1_668_334_950 * 10**18, 0);
stages[27] = Stage(1723326899, 0.0000002438 ether, 0.0006216 ether, 1_608_751_876 * 10**18, 0);
stages[28] = Stage(1723326899, 0.0000002525 ether, 0.0006438 ether, 1_553_276_977 * 10**18, 0);
stages[29] = Stage(1723326899, 0.0000002612 ether, 0.0006660 ether, 1_501_501_502 * 10**18, 0);
stages[30] = Stage(1723326899, 0.0000002699 ether, 0.0006882 ether, 1_453_066_667 * 10**18, 0);
stages[31] = Stage(1723326899, 0.0000002786 ether, 0.0007104 ether, 1_407_657_658 * 10**18, 0);
stages[32] = Stage(1723326899, 0.0000002873 ether, 0.0007326 ether, 1_365_000_683 * 10**18, 0);
stages[33] = Stage(1723326899, 0.0000002960 ether, 0.0007548 ether, 1_324_853_522 * 10**18, 0);
stages[34] = Stage(1723326899, 0.0000003047 ether, 0.0007770 ether, 1_287_001_287 * 10**18, 0);
stages[35] = Stage(1723326899, 0.0000003134 ether, 0.0007992 ether, 1_251_251_251 * 10**18, 0);
stages[36] = Stage(1723326899, 0.0000003221 ether, 0.0008214 ether, 1_217_434_469 * 10**18, 0);
stages[37] = Stage(1723326899, 0.0000003308 ether, 0.0008436 ether, 1_185_396_040 * 10**18, 0);
stages[38] = Stage(1723326899, 0.0000003395 ether, 0.0008658 ether, 1_155_001_156 * 10**18, 0);
stages[39] = Stage(1723326899, 0.0000003482 ether, 0.0008880 ether, 1_126_126_126 * 10**18, 0);
stages[40] = Stage(1723326899, 0.0000003569 ether, 0.0009102 ether, 1_098_659_854 * 10**18, 0);
stages[41] = Stage(1723326899, 0.0000003656 ether, 0.0009324 ether, 1_072_501_073 * 10**18, 0);
stages[42] = Stage(1723326899, 0.0000003744 ether, 0.0009546 ether, 1_047_558_817 * 10**18, 0);
stages[43] = Stage(1723326899, 0.0000003831 ether, 0.0009768 ether, 1_023_751_024 * 10**18, 0);
stages[44] = Stage(1723326899, 0.0000003918 ether, 0.0009990 ether, 1_001_001_001 * 10**18, 0);
currentStage = 0;
totalTokensforSale = stages[currentStage].tokensAvailable;
tokenWL[DAI] = true;
rate = stages[currentStage].ethPrice;
tokenPrices[DAI] = stages[currentStage].tokenPrice;
}
modifier saleStarted(){
require (!isPresaleStarted, "PreSale: Sale has already started");
_;
}
function updateNextStage() public onlyOwner{
currentStage = currentStage.add(1);
tokenPrices[DAI] = stages[currentStage].tokenPrice;
rate = stages[currentStage].ethPrice;
totalTokensSold = 0;
totalTokensforSale = stages[currentStage].tokensAvailable;
}
function updateEthPrice(uint256 _phaseId, uint256 _pricePerToken)
public
onlyOwner
{
stages[_phaseId].tokenPrice = _pricePerToken;
}
function updatePrice(uint256 _phaseId, uint256 _pricePerToken)
public
onlyOwner
{
stages[_phaseId].tokenPrice = _pricePerToken;
}
//function to set information of Token sold in Pre-Sale and its rate in Native currency
function setSaleTokenParams(
address _saleToken
) external onlyOwner saleStarted{
saleToken = _saleToken;
saleTokenDec = IERC20Metadata(saleToken).decimals();
}
// Add a token to buy presale token from, with price
function addWhiteListedToken(
address _token
) external onlyOwner {
tokenWL[_token] = true;
tokenPrices[_token] = stages[currentStage].tokenPrice;
}
function updateEthRate(uint256 _rate) external onlyOwner {
rate = _rate;
}
function updateTokenRate(
address _token,
uint256 _price
)external onlyOwner{
require(tokenWL[_token], "Presale: Token not whitelisted");
require(_price != 0, "Presale: Cannot set price to 0");
tokenPrices[_token] = _price;
}
function startPresale() external onlyOwner {
require(!isPresaleStarted, "PreSale: Sale has already started");
isPresaleStarted = true;
}
function stopPresale() external onlyOwner {
require(isPresaleStarted, "PreSale: Sale hasn't started yet!");
isPresaleStarted = false;
}
function startUnlocking() external onlyOwner {
require(!isUnlockingStarted, "PreSale: Unlocking has already started");
isUnlockingStarted = true;
unlockTime = block.timestamp;
}
function stopUnlocking() external onlyOwner {
require(isUnlockingStarted, "PreSale: Unlocking hasn't started yet!");
isUnlockingStarted = false;
}
// Public view function to calculate amount of sale tokens returned if you buy using "amount" of "token"
function getTokenAmount(address token, uint256 amount)
public
view
returns (uint256)
{
if(!isPresaleStarted) {
return 0;
}
uint256 amtOut;
if(token != address(0)){
require(tokenWL[token] == true, "Presale: Token not whitelisted");
uint256 price = stages[currentStage].tokenPrice;
amtOut = amount.mul(10**saleTokenDec).div(price);
}
else{
uint256 priceEth = stages[currentStage].ethPrice;
amtOut = amount.mul(10**saleTokenDec).div(priceEth);
}
return amtOut;
}
// Public Function to buy tokens. APPROVAL needs to be done first
function buyToken(address _token, uint256 _amount) external payable{
require(isPresaleStarted, "PreSale: Sale stopped!");
uint256 saleTokenAmt;
if(_token != address(0)){
require(_amount > 0, "Presale: Cannot buy with zero amount");
require(tokenWL[_token] == true, "Presale: Token not whitelisted");
saleTokenAmt = getTokenAmount(_token, _amount);
// check if saleTokenAmt is greater than minBuyLimit
require(saleTokenAmt >= minBuyLimit, "Presale: Min buy limit not reached");
require(presaleData[msg.sender] + saleTokenAmt <= maxBuyLimit, "Presale: Max buy limit reached for this phase");
//require((totalTokensSold + saleTokenAmt) <= totalTokensforSale, "PreSale: Total Token Sale Reached!");
require((stages[currentStage].tokensSold + saleTokenAmt) <= stages[currentStage].tokensAvailable, "PreSale: Total Token Sale Reached!");
IERC20(_token).safeTransferFrom(msg.sender, presaleWallet, _amount);
}
else{
saleTokenAmt = getTokenAmount(address(0), msg.value);
// check if saleTokenAmt is greater than minBuyLimit
require(saleTokenAmt >= minBuyLimit, "Presale: Min buy limit not reached");
require(presaleData[msg.sender] + saleTokenAmt <= maxBuyLimit, "Presale: Max buy limit reached for this phase");
//require((totalTokensSold + saleTokenAmt) <= totalTokensforSale, "PreSale: Total Token Sale Reached!");
require((stages[currentStage].tokensSold + saleTokenAmt) <= stages[currentStage].tokensAvailable, "PreSale: Total Token Sale Reached!");
payable(presaleWallet).transfer(_amount);
}
//IERC20(saleToken).safeTransfer(msg.sender, saleTokenAmt); // To allow investor to receive tokens on purchase
totalTokensSold += saleTokenAmt;
stages[currentStage].tokensSold += saleTokenAmt;
buyersAmount[msg.sender].amount += saleTokenAmt;
presaleData[msg.sender] += saleTokenAmt;
/*
if (stages[currentStage].tokensAvailable == 0 || block.timestamp > stages[currentStage].endTime) {
currentStage = currentStage.add(1);
stages[currentStage].tokensSold = 0;
if(_token != address(0)){
tokenPrices[DAI] = stages[currentStage].tokenPrice;
} else {
rate = stages[currentStage].ethPrice;
}
}
*/
buyersAmount[msg.sender].distribution1 += saleTokenAmt / 4;
buyersAmount[msg.sender].distribution2 += saleTokenAmt / 4;
buyersAmount[msg.sender].distribution3 += saleTokenAmt / 4;
buyersAmount[msg.sender].distribution4 += saleTokenAmt / 4;
}
function claimPurchasedTokens() external {
uint256 tokensforWithdraw;
require(buyersAmount[msg.sender].isClaimed == false, "Presale: Already claimed");
require(isUnlockingStarted, "Presale: Locking period not over yet");
tokensforWithdraw = buyersAmount[msg.sender].amount;
if (unlockTime < block.timestamp + 7 days) {
require(isUnlockingStarted, "Presale: Locking period not over yet");
} else if (unlockTime >= block.timestamp + 7 days) {
tokensforWithdraw = buyersAmount[msg.sender].distribution1;
} else if (unlockTime >= block.timestamp + 30 days) {
tokensforWithdraw = buyersAmount[msg.sender].distribution2;
} else if (unlockTime >= block.timestamp + 60 days) {
tokensforWithdraw = buyersAmount[msg.sender].distribution3;
} else if (unlockTime >= block.timestamp + 90 days) {
tokensforWithdraw = buyersAmount[msg.sender].distribution4;
} else {
tokensforWithdraw = buyersAmount[msg.sender].distribution1 + buyersAmount[msg.sender].distribution2 + buyersAmount[msg.sender].distribution3 + buyersAmount[msg.sender].distribution4;
}
if (tokensforWithdraw == 0) {
buyersAmount[msg.sender].isClaimed = true;
}
//buyersAmount[msg.sender].isClaimed = true;
IERC20(saleToken).safeTransfer(msg.sender, tokensforWithdraw);
}
function changeClaim (address _investorsWallet, bool _value ) public onlyOwner {
buyersAmount[_investorsWallet].isClaimed = _value;
}
function setMinBuyLimit(uint _minBuyLimit) external onlyOwner {
minBuyLimit = _minBuyLimit;
}
function setMaxBuyLimit(uint _maxBuyLimit) external onlyOwner {
maxBuyLimit = _maxBuyLimit;
}
function updatePresaleWallet(address wallet) external onlyOwner {
require(wallet != presaleWallet, "Address is already presale wallet");
presaleWallet = wallet;
}
}