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// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.8.7;

// TattooMoney.io TattooMoney Token SWAP Contract
//
// USE ONLY OWN WALLET (Metamask, TrustWallet, Trezor, Ledger...)
// DO NOT DO DIRECT SEND OR FROM EXCHANGES OR ANY SERVICES
//
// Use ONLY ETH network, ERC20 TAT2 tokens (Not Binance/Tron/whatever!)
//
// Set approval to contract address before using swap!
//
// DO NOT SEND ANY TOKENS DIRECTLY - THEY WILL BE GONE FOREVER!
//
// Use swap function!

import "./interfaces.sol";

contract TattooMoneyV1toV2SWAP {

    // addresses of tokens
    address public immutable newtat2;
    uint8 public constant newtat2decimals = 18;
    address public immutable oldtat2;
    uint8 public constant oldtat2decimals = 6;

    address public owner;
    address public newOwner;

    string constant ERR_TRANSFER = "Token transfer failed";

    event Swapped(address indexed sender, uint256 indexed amount, uint256 indexed newamount);
    event Tokens(uint256 indexed amount);
    event Burned(uint256 indexed amount);

    /**
    Contract constructor
    @param _owner adddress of contract owner
    @param _oldtat2 adddress of old contract
    @param _newtat2 adddress of new contract
     */

    constructor(
        address _owner,
        address _oldtat2,
        address _newtat2
    ) {
        owner = _owner;
        oldtat2 = _oldtat2;
        newtat2 = _newtat2;

        /**
        mainnet:
        oldTAT2=0x960773318c1aeab5da6605c49266165af56435fa; // Old Token SmartContract
        newTAT2=0xb487d0328b109e302b9d817b6f46Cbd738eA08C2;  // new Token SmartContract
        */
    }

    /**
    Get NEW TAT2, use approve/transferFrom
    @param amount number of old TAT2
    */
    function swap(uint256 amount) external {
        uint8 decimals = newtat2decimals - oldtat2decimals;
        uint256 newamount = amount * (10 ** decimals);
        require(
            INterfaces(oldtat2).transferFrom(msg.sender, address(this), amount),
            ERR_TRANSFER
        );
        require(
            INterfaces(newtat2).transfer(msg.sender, newamount),
            ERR_TRANSFER
        );
        emit Swapped(msg.sender, amount, newamount);
    }

    modifier onlyOwner() {
        require(msg.sender == owner, "Only for contract Owner");
        _;
    }

    /// Let's burn OLD tokens
    function burn() external onlyOwner {
      uint256 amt = INterfaces(oldtat2).balanceOf(address(this));
      emit Tokens(amt);
      require(
          INterfaces(oldtat2).transfer(address(0), amt),
          ERR_TRANSFER
      );
      emit Burned(amt);
    }

    /// we can recover any ERC20
    function recoverErc20(address token) external onlyOwner {
        uint256 amt = INterfaces(token).balanceOf(address(this));
        if (amt > 0) {
            INterfacesNoR(token).transfer(owner, amt); // use broken ERC20 to ignore return value
        }
    }

    /// be preapared for everything, ETH recovery
    function recoverEth() external onlyOwner {
        payable(owner).transfer(address(this).balance);
    }

    function changeOwner(address _newOwner) external onlyOwner {
        newOwner = _newOwner;
    }

    function acceptOwnership() external {
        require(
            msg.sender != address(0) && msg.sender == newOwner,
            "Only NewOwner"
        );
        newOwner = address(0);
        owner = msg.sender;
    }
}

// by Patrick

// SPDX-License-Identifier: UNLICENSE

pragma solidity ^0.8.7;

/**
 * @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
    );
}

// Interfaces for contract interaction
interface INterfaces {
    function balanceOf(address) external returns (uint256);

    function transfer(address, uint256) external returns (bool);

    function transferFrom(
        address,
        address,
        uint256
    ) external returns (bool);

}

// For tokens that do not return true on transfers eg. USDT
interface INterfacesNoR {
    function transfer(address, uint256) external;

    function transferFrom(
        address,
        address,
        uint256
    ) external;
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_owner","type":"address"},{"internalType":"address","name":"_oldtat2","type":"address"},{"internalType":"address","name":"_newtat2","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Burned","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":true,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"newamount","type":"uint256"}],"name":"Swapped","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Tokens","type":"event"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newOwner","type":"address"}],"name":"changeOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"newOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"newtat2","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"newtat2decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"oldtat2","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"oldtat2decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"recoverErc20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"recoverEth","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"swap","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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0000000000000000000000009f8e0bdada7ba929509ce92cbbbed0fb129c8832000000000000000000000000960773318c1aeab5da6605c49266165af56435fa000000000000000000000000b487d0328b109e302b9d817b6f46cbd738ea08c2

-----Decoded View---------------
Arg [0] : _owner (address): 0x9f8E0bDAdA7bA929509CE92cbbbEd0Fb129c8832
Arg [1] : _oldtat2 (address): 0x960773318c1AeaB5dA6605C49266165af56435fa
Arg [2] : _newtat2 (address): 0xb487d0328b109e302b9d817b6f46Cbd738eA08C2

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000009f8e0bdada7ba929509ce92cbbbed0fb129c8832
Arg [1] : 000000000000000000000000960773318c1aeab5da6605c49266165af56435fa
Arg [2] : 000000000000000000000000b487d0328b109e302b9d817b6f46cbd738ea08c2

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