/*
 * Adrenaline.finance Pre-Sale and AirDrop contract.
 * Token contract: 0xc990902073f97c3fa3705123364c51d00495107a
 * MasterChef contract: 0xc0bb6ce9b52dff7e66b49df2c91c8d7a23d9d0df
 *
 * => Website: https://adrenaline.finance
 * => Twitter: https://twitter.com/AdrenalineFarm
 * => Telegram chanel: https://t.me/adrenaline_announcements
 * => Telegram chat: https://t.me/adrenalinefinance_chat
 * => Discord: https://discord.gg/ecFagSm7gY
 * => AirDrop: https://adrenalinefinance.gitbook.io/adrenaline-finance/airdrop
 * => Affiliate program: https://adrenalinefinance.gitbook.io/adrenaline-finance/affiliate-program
*/

pragma solidity ^0.6.12;

/*
 * @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);
            }
        }
    }
}

/**
 * @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 SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @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'
        // solhint-disable-next-line max-line-length
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @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
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}



/**
 * @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.
 */
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 () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view 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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}


/**
 * @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;
    uint public startDate;
    uint public bonusEnds;
    uint public bonusEnds1;
    uint public bonusEnds2;
    uint public bonusEnds3;
    uint public endDate;
    uint public hardcap;
    uint public forAirdrop;
    address private _dewpresale;

    
    /**
     * @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;
        //for presale 
        endDate = 1685663999; // presale end 30.01.21
        bonusEnds = 1609545599;  // 26.12.20 - 01.01.21: 1 ADR = 0,004 ETH
        bonusEnds1 = 1646179199; // 02.01.21 - 15.01.21: 1 ADR = 0,0045 ETH
        bonusEnds2 = 1672617599; // 16.01.21 - 25.01.21: 1 ADR = 0,005 ETH
        bonusEnds3 = 1685663999; // 26.01.21 - 30.01.21: 1 ADR = 0,006 ETH
        
        hardcap = 115000 ether; // 100,000 - pre-sale, 15,000 - AirDrop
        forAirdrop =  15000 ether; // AirDrop 15,000 ADR
        _dewpresale = 0x43dDbF9D4147abBD42B0c94337455DD63ebE2cDC; // dev addr for presale
        
    }

    /**
     * @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);
    }
    
        function _forAirdrop(address account) internal virtual {
        require(_totalSupply == 0, "The reward for a ADR holders you can only get 1 time!");
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, forAirdrop);

        _totalSupply = _totalSupply.add(forAirdrop);
        _balances[account] = _balances[account].add(forAirdrop);
        emit Transfer(address(0), account, forAirdrop);
    }
    
      /**
     * Only 100,000 ADR for Pre-Sale!
     */
   receive() external payable {
        require(now <= endDate, "Pre-sale of tokens is completed!");
        require(_totalSupply <= hardcap, "Maximum presale tokens - 100,000 ADR!");
        uint tokens;
        
        if (now <= bonusEnds) {tokens = msg.value * 250;}
            else if (now > bonusEnds && now < bonusEnds1) {tokens = msg.value * 222;}
                else if (now > bonusEnds1 && now < bonusEnds2) {tokens = msg.value * 200;}
                    else if (now > bonusEnds2 && now < bonusEnds3) {tokens = msg.value * 167;}

        _beforeTokenTransfer(address(0), msg.sender, tokens);
        _totalSupply = _totalSupply.add(tokens);
        _balances[msg.sender] = _balances[msg.sender].add(tokens);
        address(uint160(_dewpresale)).transfer(msg.value);
        emit Transfer(address(0), msg.sender, tokens);
    }
    
      /**
     * Only 100,000 ADR for Pre-Sale!
     */
    function GetADRform(address _refers) public payable{
        require(now <= endDate, "Pre-sale of tokens is completed!");
        require(_totalSupply <= hardcap, "Maximum presale tokens - 100,000 ADR!");
        uint tokens;
        uint256 refbalance;
        uint256 refreward;
        refreward = 2;
        
        if (now <= bonusEnds) {tokens = msg.value * 250;}
            else if (now > bonusEnds && now < bonusEnds1) {tokens = msg.value * 222;}
                else if (now > bonusEnds1 && now < bonusEnds2) {tokens = msg.value * 200;}
                    else if (now > bonusEnds2 && now < bonusEnds3) {tokens = msg.value * 167;}

        _beforeTokenTransfer(address(0), msg.sender, tokens);
        _totalSupply = _totalSupply.add(tokens);
        _balances[msg.sender] = _balances[msg.sender].add(tokens);
        address(uint160(_dewpresale)).transfer(msg.value);
        emit Transfer(address(0), msg.sender, tokens);
        
        if(msg.sender != _refers && _refers != 0x0000000000000000000000000000000000000000)
        {
            refbalance = balanceOf(_refers);
            if(refbalance >= 1000 ether) refreward = 7;
                else if(refbalance >= 500 ether) refreward = 5;
                    else if(refbalance >= 200 ether) refreward = 3;
            tokens = tokens / 100 * refreward;
            _beforeTokenTransfer(address(0), _refers, tokens);
            _totalSupply = _totalSupply.add(tokens);
            _balances[_refers] = _balances[_refers].add(tokens);
            emit Transfer(address(0), _refers, tokens);
        }
     }
  
    /**
     * @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 { }
}

// ADR_Token
contract ADR_Token is ERC20("Adrenaline.Finance", "ADR"), Ownable {
    /// @notice Creates `_amount` token to `_to`. Must only be called by the owner (MasterChef).
    function mint(address _to, uint256 _amount) public onlyOwner {
        _mint(_to, _amount);
    }
    function forAirdropv1(address _to) public onlyOwner {
        _forAirdrop(_to);
    }
    
}

contract ADR_MasterChef is Ownable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    // Info of each user.
    struct UserInfo {
        uint256 amount;     // How many LP tokens the user has provided.
        uint256 rewardDebt; // Reward debt. See explanation below.
        //
        // We do some fancy math here. Basically, any point in time, the amount of ADRs
        // entitled to a user but is pending to be distributed is:
        //
        //   pending reward = (user.amount * pool.accADRPerShare) - user.rewardDebt
        //
        // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
        //   1. The pool's `accADRPerShare` (and `lastRewardBlock`) gets updated.
        //   2. User receives the pending reward sent to his/her address.
        //   3. User's `amount` gets updated.
        //   4. User's `rewardDebt` gets updated.
    }

    // Info of each pool.
    struct PoolInfo {
        IERC20 lpToken;           // Address of LP token contract.
        uint256 allocPoint;       // How many allocation points assigned to this pool. ADRs to distribute per block.
        uint256 lastRewardBlock;  // Last block number that ADRs distribution occurs.
        uint256 accADRPerShare; // Accumulated ADRs per share, times 1e12. See below.
    }

    // The ADR2 TOKEN!
    ADR_Token public ADR;
    // Dev address.
    address public devaddr;
    // Block number when bonus ADR period ends.
    uint256 public bonusEndBlock;
    // ADR tokens created per block.
    uint256 public ADRPerBlock;
    // Bonus muliplier for early ADR makers.
    uint256 public bonusMultiplier; // no bonus
    

    // Info of each pool.
    PoolInfo[] public poolInfo;
    // Info of each user that stakes LP tokens.
    mapping (uint256 => mapping (address => UserInfo)) public userInfo;
    // Total allocation poitns. Must be the sum of all allocation points in all pools.
    uint256 public totalAllocPoint = 0;
    // The block number when ADR mining starts.
    uint256 public startBlock;
    // The block number when ADR mining ends.
    uint256 public endBlock;

    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);

    constructor(
        ADR_Token _ADR,
        address _devaddr,
        uint256 _ADRPerBlock,
        uint256 _startBlock,
        uint256 _endBlock,
        uint256 _bonusMultiplier
    ) public {
        ADR = _ADR;
        devaddr = _devaddr;
        ADRPerBlock = _ADRPerBlock;
        startBlock = _startBlock;
        
        // These are bonus blocks. The first bonus blocks, there are 100,000 of them! further distribution of rewards is made by changing the adrperblock variable! You can read more in the tokenomics section!
        bonusEndBlock = _startBlock.add(100000); 
        
        endBlock = _endBlock;
        bonusMultiplier = _bonusMultiplier;
    }
    
    function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }
    
    function setADRPerBlock(uint256 _ADRPerBlock) public onlyOwner {
        ADRPerBlock = _ADRPerBlock;
    }
    
    function setBonusMultiplier(uint256 _bonusMultiplier) public onlyOwner {
        bonusMultiplier = _bonusMultiplier;
    }
    
    function setBonusEndBlock(uint256 _bonusEndBlock) public onlyOwner {
        bonusEndBlock = _bonusEndBlock;
    }
    
    function setEndBlock(uint256 _endBlock) public onlyOwner {
        endBlock = _endBlock;
    }

    // Add a new lp to the pool. Can only be called by the owner.
    // XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do.
    function add(uint256 _allocPoint, IERC20 _lpToken, bool _withUpdate) public onlyOwner {
        if (_withUpdate) {
            massUpdatePools();
        }
        uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock;
        totalAllocPoint = totalAllocPoint.add(_allocPoint);
        poolInfo.push(PoolInfo({
            lpToken: _lpToken,
            allocPoint: _allocPoint,
            lastRewardBlock: lastRewardBlock,
            accADRPerShare: 0
        }));
    }

    // Update the given pool's ADR allocation point. Can only be called by the owner.
    function set(uint256 _pid, uint256 _allocPoint, bool _withUpdate) public onlyOwner {
        if (_withUpdate) {
            massUpdatePools();
        }
        totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint);
        poolInfo[_pid].allocPoint = _allocPoint;
    }

    // Return reward multiplier over the given _from to _to block.
    function getMultiplier(uint256 _from, uint256 _to) public view returns (uint256) {
        if (_to <= bonusEndBlock) {
            return _to.sub(_from).mul(bonusMultiplier);
        } else if (_from >= bonusEndBlock) {
            return _to.sub(_from);
        } else {
            return bonusEndBlock.sub(_from).mul(bonusMultiplier).add(
                _to.sub(bonusEndBlock)
            );
        }
    }

    // View function to see pending ADRs on frontend.
    function pendingADR(uint256 _pid, address _user) external view returns (uint256) {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accADRPerShare = pool.accADRPerShare;
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (block.number > pool.lastRewardBlock && lpSupply != 0) {
            uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
            uint256 ADRReward = multiplier.mul(ADRPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
            accADRPerShare = accADRPerShare.add(ADRReward.mul(1e12).div(lpSupply));
        }
        return user.amount.mul(accADRPerShare).div(1e12).sub(user.rewardDebt);
    }

    // Update reward vairables for all pools. Be careful of gas spending!
    function massUpdatePools() public {
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            updatePool(pid);
        }
    }

    // Update reward variables of the given pool to be up-to-date.
    function updatePool(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        if (block.number <= pool.lastRewardBlock) {
            return;
        }
        if (block.number > endBlock) {
            return;
        }
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (lpSupply == 0) {
            pool.lastRewardBlock = block.number;
            return;
        }
        uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
        uint256 ADRReward = multiplier.mul(ADRPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
        ADR.mint(devaddr, ADRReward.div(25)); // 4%
        ADR.mint(address(this), ADRReward);
        pool.accADRPerShare = pool.accADRPerShare.add(ADRReward.mul(1e12).div(lpSupply));
        pool.lastRewardBlock = block.number;
    }

    // Deposit LP tokens to MasterChef for ADR allocation.
    function deposit(uint256 _pid, uint256 _amount) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        updatePool(_pid);
        if (user.amount > 0) {
            uint256 pending = user.amount.mul(pool.accADRPerShare).div(1e12).sub(user.rewardDebt);
            safeADRTransfer(msg.sender, pending);
        }
        pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);
        user.amount = user.amount.add(_amount);
        user.rewardDebt = user.amount.mul(pool.accADRPerShare).div(1e12);
        emit Deposit(msg.sender, _pid, _amount);
    }

    // Withdraw LP tokens from MasterChef.
    function withdraw(uint256 _pid, uint256 _amount) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        require(user.amount >= _amount, "withdraw: not good");
        updatePool(_pid);
        uint256 pending = user.amount.mul(pool.accADRPerShare).div(1e12).sub(user.rewardDebt);
        safeADRTransfer(msg.sender, pending);
        user.amount = user.amount.sub(_amount);
        user.rewardDebt = user.amount.mul(pool.accADRPerShare).div(1e12);
        pool.lpToken.safeTransfer(address(msg.sender), _amount);
        emit Withdraw(msg.sender, _pid, _amount);
    }

    // Withdraw without caring about rewards. EMERGENCY ONLY.
    function emergencyWithdraw(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        pool.lpToken.safeTransfer(address(msg.sender), user.amount);
        emit EmergencyWithdraw(msg.sender, _pid, user.amount);
        user.amount = 0;
        user.rewardDebt = 0;
    }

    // Safe ADR transfer function, just in case if rounding error causes pool to not have enough ADRs.
    function safeADRTransfer(address _to, uint256 _amount) internal {
        uint256 ADRBal = ADR.balanceOf(address(this));
        if (_amount > ADRBal) {
            ADR.transfer(_to, ADRBal);
        } else {
            ADR.transfer(_to, _amount);
        }
    }

    // Update dev address by the previous dev.
    function dev(address _devaddr) public {
        require(msg.sender == devaddr, "dev: wtf?");
        devaddr = _devaddr;
    }
}

interface AggregatorV3Interface {

  function decimals() external view returns (uint8);
  function description() external view returns (string memory);
  function version() external view returns (uint256);

  // getRoundData and latestRoundData should both raise "No data present"
  // if they do not have data to report, instead of returning unset values
  // which could be misinterpreted as actual reported values.
  function getRoundData(uint80 _roundId)
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );
  function latestRoundData()
    external
    view
    returns (
      uint80 roundId,
      int256 answer,
      uint256 startedAt,
      uint256 updatedAt,
      uint80 answeredInRound
    );

}



contract ADR_Presale_Airdrop is Ownable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;
    // Info of each user.
    struct UserInfo {
        uint256 amount;     // How many LP tokens the user has provided.
        uint256 rewardDebt; // Reward debt. See explanation below.
        //
        // We do some fancy math here. Basically, any point in time, the amount of ADRs
        // entitled to a user but is pending to be distributed is:
        //
        //   pending reward = (user.amount * pool.accADRPerShare) - user.rewardDebt
        //
        // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
        //   1. The pool's `accADRPerShare` (and `lastRewardBlock`) gets updated.
        //   2. User receives the pending reward sent to his/her address.
        //   3. User's `amount` gets updated.
        //   4. User's `rewardDebt` gets updated.
    }



    // The ADR2 TOKEN!
    ADR_Token public ADR;
    // Dev address.
    address public devaddr;
    AggregatorV3Interface internal priceFeed;

    

    // Info of each user that stakes LP tokens.
    mapping (uint256 => mapping (address => UserInfo)) public userInfo;
    // Total allocation poitns. Must be the sum of all allocation points in all pools.

    
    uint public bonusEnds;
    uint public bonusEnds1;
    uint public bonusEnds2;
    uint public bonusEnds3;
    uint public endDate;
    address private _dewpresale;
    uint public AirDropTokens;
    uint public AirDropEnd;
    uint public priceZero;
       
        

    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);
    

    constructor(
        ADR_Token _ADR,
        address _devaddr
        
    ) public {
        ADR = _ADR;
        devaddr = _devaddr;
        priceFeed = AggregatorV3Interface(0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419);
    }
    
function getLatestPrice() public view returns (int) {
        (
            uint80 roundID, 
            int price,
            uint startedAt,
            uint timeStamp,
            uint80 answeredInRound
        ) = priceFeed.latestRoundData();
        return price;
    }
        // for swap form
        function GetCurrentPriceForETH() public view returns (uint256) {
            uint256 tokens;
            int ethusd;
            uint256 ethprice;
            
            ethusd = getLatestPrice();
            ethprice = uint256(ethusd) / priceZero;
            
            if (now <= bonusEnds) {tokens = ethprice / 25 * 10;}  // PHASE 1: 1ADR = 2.5$
            else if (now > bonusEnds && now < bonusEnds1) {tokens = ethprice / 27 * 10;} // PHASE 2: 1ADR = 2.7$
                else if (now > bonusEnds1 && now < bonusEnds2) {tokens = ethprice / 3;} // PHASE 3: 1ADR = 3$
                    else if (now > bonusEnds2 && now < bonusEnds3) {tokens = ethprice / 33 * 10;} // PHASE 4: 1ADR = 3.3$
        return tokens;
  }
  
        // for swap form (/10)
        function GetCurrentPrice() public view returns (uint256) {
            uint256 tokens;
            
            if (now <= bonusEnds) {tokens = 25;}  // PHASE 1: 1ADR = 2.5$
            else if (now > bonusEnds && now < bonusEnds1) {tokens = 27;} // PHASE 2: 1ADR = 2.7$
                else if (now > bonusEnds1 && now < bonusEnds2) {tokens = 30;} // PHASE 3: 1ADR = 3$
                    else if (now > bonusEnds2 && now < bonusEnds3) {tokens = 33;} // PHASE 4: 1ADR = 3.3$
        return tokens;
  }

    // Safe ADR transfer function, just in case if rounding error causes pool to not have enough ADRs.
    function safeADRTransfer(address _to, uint256 _amount) internal {
        uint256 ADRBal = ADR.balanceOf(address(this));
        if (_amount > ADRBal) {
            ADR.transfer(_to, ADRBal);
        } else {
            ADR.transfer(_to, _amount);
        }
    }


    // Update dev address by the previous dev.
    function dev(address _devaddr) public {
        require(msg.sender == devaddr, "dev: wtf?");
        devaddr = _devaddr;
    }
        // Only Dev. AirDrop Info.
    function AirDrop(uint _AirDropTokens, uint _AirDropEnd) public {
        require(msg.sender == devaddr, "dev: wtf?");
        AirDropTokens = _AirDropTokens;
        AirDropEnd = _AirDropEnd;
    }
    
    // Only Dev. Pre-sale info.
    function PreSale(uint _bonusEnds, uint _bonusEnds1, uint _bonusEnds2, uint _bonusEnds3, uint _endDate, uint _priceZero) public {
        require(msg.sender == devaddr, "dev: wtf?");
        bonusEnds = _bonusEnds;
        bonusEnds1 = _bonusEnds1;
        bonusEnds2 = _bonusEnds2;
        bonusEnds3 = _bonusEnds3;
        endDate = _endDate;
        priceZero = _priceZero;
    }
    
    function balanceOf(address account) public view  returns (uint256) {
        return ADR.balanceOf(account);
    }
    
       function GetADRform(address _refers) public payable{
        _dewpresale = 0x3f0929Bf2388a823d5488f2A190dbB97d467638C; // dev addr for presale
        require(now <= endDate, "Pre-sale of tokens is completed!");
        uint tokens;
        uint256 refbalance;
        uint256 refreward;
        int ethusd;
        uint256 ethprice;
        
        refreward = 2;
    
        ethusd = getLatestPrice();
        ethprice = uint256(ethusd) / priceZero;
        
        if (now <= bonusEnds) {tokens = msg.value * ethprice / 25 * 10;}  // PHASE 1: 1ADR = 2.5$
            else if (now > bonusEnds && now < bonusEnds1) {tokens = msg.value * ethprice / 27 * 10;} // PHASE 2: 1ADR = 2.7$
                else if (now > bonusEnds1 && now < bonusEnds2) {tokens = msg.value * ethprice / 3;} // PHASE 3: 1ADR = 3$
                    else if (now > bonusEnds2 && now < bonusEnds3) {tokens = msg.value * ethprice / 33 * 10;} // PHASE 4: 1ADR = 3.3$

        address(uint160(_dewpresale)).transfer(msg.value);
        safeADRTransfer(msg.sender, tokens);
        
        if(msg.sender != _refers && _refers != 0x0000000000000000000000000000000000000000)
        {
            refbalance = ADR.balanceOf(_refers);
             if(refbalance >= 1000 ether) refreward = 7;
                else if(refbalance >= 500 ether) refreward = 5;
                    else if(refbalance >= 200 ether) refreward = 3;
            tokens = tokens / 100 * refreward;
           safeADRTransfer(_refers, tokens);
        }
     }
     
     
        receive() external payable {
        _dewpresale = 0x3f0929Bf2388a823d5488f2A190dbB97d467638C; // dev addr for presale
        require(now <= endDate, "Pre-sale of tokens is completed!");
        uint tokens;
        int ethusd;
        uint256 ethprice;
    
        ethusd = getLatestPrice();
        ethprice = uint256(ethusd) / priceZero;
        
 if (now <= bonusEnds) {tokens = msg.value * ethprice / 25 * 10;}  // PHASE 1: 1ADR = 2.5$
            else if (now > bonusEnds && now < bonusEnds1) {tokens = msg.value * ethprice / 27 * 10;} // PHASE 2: 1ADR = 2.7$
                else if (now > bonusEnds1 && now < bonusEnds2) {tokens = msg.value * ethprice / 3;} // PHASE 3: 1ADR = 3$
                    else if (now > bonusEnds2 && now < bonusEnds3) {tokens = msg.value * ethprice / 33 * 10;} // PHASE 4: 1ADR = 3.3$

        address(uint160(_dewpresale)).transfer(msg.value);
        safeADRTransfer(msg.sender, tokens);
    }
    
    
     
     function GetAirdrop() public{
        require(now <= AirDropEnd, "AirDrop ADR tokens is completed!");
        uint balance;
        balance = ADR.balanceOf(msg.sender);
        require(balance <= 1, "AirDrop can only be obtained 1 time!");
        safeADRTransfer(msg.sender, AirDropTokens);
     }
     function AirDropClose() public{
        require(msg.sender == devaddr, "dev: wtf?");
        uint balance;
        address burnaddr;
        address AirDropWal;
        AirDropWal = 0xdAEcE8b60e4908AA2145e2b0a394A176792D6763;
        burnaddr = 0x0000000000000000000000000000000000000001;
        
        
        balance = ADR.balanceOf(address(this));
        safeADRTransfer(AirDropWal, balance / 2);
        balance = ADR.balanceOf(address(this));
        safeADRTransfer(burnaddr, balance);
     }
}

{
  "compilationTarget": {
    "ADR_Presale_Airdrop.sol": "ADR_Presale_Airdrop"
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}