// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)
pragma solidity ^0.8.7;
import {Context} from "../utils/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. 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;
    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);
    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }
    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }
    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }
    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }
    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling 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 {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _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);
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.7;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);
    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
    /**
     * @dev Returns the value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);
    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);
    /**
     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 value) 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 a `value` amount of tokens 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 value) external returns (bool);
    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 value) external returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)
pragma solidity ^0.8.7;
/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);
    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.7;
import {IERC20} from "../IERC20.sol";
import {IERC20Permit} from "../extensions/IERC20Permit.sol";
import {Address} from "../../../utils/Address.sol";
/**
 * @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;
    /**
     * @dev An operation with an ERC20 token failed.
     */
    error SafeERC20FailedOperation(address token);
    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);
    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }
    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value)));
    }
    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }
    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }
    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));
        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
            _callOptionalReturn(token, approvalCall);
        }
    }
    /**
     * @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);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }
    /**
     * @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).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // 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 cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.
        (bool success, bytes memory returndata) = address(token).call(data);
        return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)
pragma solidity ^0.8.7;
/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error AddressInsufficientBalance(address account);
    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);
    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedInnerCall();
    /**
     * @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://consensys.net/diligence/blog/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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert FailedInnerCall();
        }
    }
    /**
     * @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 or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {FailedInnerCall} error.
     *
     * 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.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }
    /**
     * @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`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }
    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }
    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
     * unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }
    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {FailedInnerCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }
    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
     */
    function _revert(bytes memory returndata) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert FailedInnerCall();
        }
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Context.sol)
pragma solidity ^0.8.7;
/**
 * @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;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
contract Deposit is Context, Ownable{
    using SafeERC20 for IERC20;
    IERC20[] public tokens;
    address[] private beneficiaries;
    mapping(uint256 => uint256) public totalDeposited;
    uint256 public allOrderId;
    struct Order {
        address owner;
        address beneficiaryAddr;
        uint256 orderId;
        uint256 orderDate; //timestamp
        uint256 amount;
        uint256 tokenType;
        string account;
    }
    mapping(uint256 => Order) public allOrders;
    event DepositToken(
        address owner,
        uint256 orderId,
        uint256 amount,
        uint256 tokenType,
        string account
    );
    constructor() Ownable(msg.sender){
    }
    function addTokensType(address _token) public onlyOwner {
        require(_token != address(0), "Invalid token");
        tokens.push(IERC20(_token));
    }
    function getTokensType(
        uint256 index
    ) public view returns (IERC20) {
        return tokens[index];
    }
    function addBeneficiary(address _beneficiary) public onlyOwner {
        require(_beneficiary != address(0), "Invalid Beneficiary");
        beneficiaries.push(_beneficiary);
    }
    function getBeneficiaries()
        public
        view
        onlyOwner
        returns (address[] memory)
    {
        return beneficiaries;
    }
    //==============================
    //            MAIN
    //==============================
    function deposit(
        uint256 _amt,
        string memory _account,
        uint256 _tokenType
    ) public {
        require(_amt > 0, "Amount cannot be empty");
        require(beneficiaries.length > 0, "Beneficiary empty");
        require(_tokenType < tokens.length, "Token type not found");
        allOrderId++; //starts with 1
        uint256 beneficiaryIndex = (allOrderId - 1) % beneficiaries.length;
        address beneficiaryAddr = beneficiaries[beneficiaryIndex];
        //add new order
        Order memory newOrder;
        newOrder.owner = msg.sender;
        newOrder.beneficiaryAddr = beneficiaryAddr;
        newOrder.orderDate = block.timestamp;
        newOrder.amount = _amt;
        newOrder.orderId = allOrderId;
        newOrder.tokenType = _tokenType;
        newOrder.account = _account;
        allOrders[allOrderId] = newOrder; //order struct new order
        totalDeposited[_tokenType] += _amt;
        tokens[_tokenType].safeTransferFrom(msg.sender, beneficiaryAddr, _amt);
        emit DepositToken(msg.sender, allOrderId, _amt, _tokenType, _account);
    }
}

{"SafeMath.sol":{"content":"pragma solidity ^0.6.12;\r\n\r\n// ----------------------------------------------------------------------------\r\n// Safe maths\r\n// ----------------------------------------------------------------------------\r\nlibrary SafeMath {\r\n    function add(uint a, uint b) internal pure returns (uint c) {\r\n        c = a + b;\r\n        require(c \u003e= a, \u0027SafeMath:INVALID_ADD\u0027);\r\n    }\r\n\r\n    function sub(uint a, uint b) internal pure returns (uint c) {\r\n        require(b \u003c= a, \u0027SafeMath:OVERFLOW_SUB\u0027);\r\n        c = a - b;\r\n    }\r\n\r\n    function mul(uint a, uint b, uint decimal) internal pure returns (uint) {\r\n        uint dc = 10**decimal;\r\n        uint c0 = a * b;\r\n        require(a == 0 || c0 / a == b, \"SafeMath: multiple overflow\");\r\n        uint c1 = c0 + (dc / 2);\r\n        require(c1 \u003e= c0, \"SafeMath: multiple overflow\");\r\n        uint c2 = c1 / dc;\r\n        return c2;\r\n    }\r\n\r\n    function div(uint256 a, uint256 b, uint decimal) internal pure returns (uint256) {\r\n        require(b != 0, \"SafeMath: division by zero\");\r\n        uint dc = 10**decimal;\r\n        uint c0 = a * dc;\r\n        require(a == 0 || c0 / a == dc, \"SafeMath: division internal\");\r\n        uint c1 = c0 + (b / 2);\r\n        require(c1 \u003e= c0, \"SafeMath: division internal\");\r\n        uint c2 = c1 / b;\r\n        return c2;\r\n    }\r\n}\r\n"},"TubeToken.sol":{"content":"pragma solidity ^0.6.12;\r\n\r\nimport \u0027./SafeMath.sol\u0027;\r\n\r\n// ----------------------------------------------------------------------------\r\n// ERC Token Standard #20 Interface\r\n// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md\r\n// ----------------------------------------------------------------------------\r\nabstract contract ERC20Interface {\r\n  function totalSupply() public virtual view returns (uint);\r\n  function balanceOf(address tokenOwner) public virtual view returns (uint balance);\r\n  function allowance(address tokenOwner, address spender) public virtual view returns (uint remaining);\r\n  function transfer(address to, uint tokens) public virtual returns (bool success);\r\n  function approve(address spender, uint tokens) public virtual returns (bool success);\r\n  function transferFrom(address from, address to, uint tokens) public virtual returns (bool success);\r\n\r\n  event Transfer(address indexed from, address indexed to, uint tokens);\r\n  event Approval(address indexed tokenOwner, address indexed spender, uint tokens);\r\n}\r\n\r\n// ----------------------------------------------------------------------------\r\n// Contract function to receive approval and execute function in one call\r\n//\r\n// Borrowed from MiniMeToken\r\n// ----------------------------------------------------------------------------\r\nabstract contract ApproveAndCallFallBack {\r\n  function receiveApproval(address from, uint256 tokens, address token, bytes memory data) public virtual;\r\n}\r\n\r\n// ----------------------------------------------------------------------------\r\n// Owned contract\r\n// ----------------------------------------------------------------------------\r\ncontract Owned {\r\n  address public owner;\r\n  address public newOwner;\r\n\r\n  event OwnershipTransferred(address indexed _from, address indexed _to);\r\n\r\n  constructor() public {\r\n      owner = msg.sender;\r\n  }\r\n\r\n  modifier onlyOwner {\r\n    require(msg.sender == owner);\r\n    _;\r\n  }\r\n\r\n  function transferOwnership(address _newOwner) public onlyOwner {\r\n    newOwner = _newOwner;\r\n  }\r\n  function acceptOwnership() public {\r\n    require(msg.sender == newOwner);\r\n    emit OwnershipTransferred(owner, newOwner);\r\n    owner = newOwner;\r\n    newOwner = address(0);\r\n  }\r\n}\r\n\r\n// ----------------------------------------------------------------------------\r\n// ERC20 Token, with the addition of symbol, name and decimals and an\r\n// initial fixed supply\r\n// ----------------------------------------------------------------------------\r\ncontract TubeToken is ERC20Interface, Owned {\r\n  using SafeMath for uint;\r\n\r\n  address public chief; // the Tube Chief address\r\n\r\n  string public symbol;\r\n  string public  name;\r\n  uint8 public decimals;\r\n  uint public _totalSupply;\r\n\r\n  mapping(address =\u003e uint) balances;\r\n  mapping(address =\u003e mapping(address =\u003e uint)) allowed;\r\n\r\n  // only cheif contract able to interact the important function !\r\n  modifier onlyChief {\r\n      require(chief != address(0), \u0027CHIEF MISSING\u0027);\r\n      require(msg.sender == chief, \u0027ACCESS_FORBIDDEN\u0027);\r\n      _;\r\n  }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Constructor\r\n  // ------------------------------------------------------------------------\r\n  constructor() public {\r\n    symbol   = \"TUBE2\";\r\n    name     = \"TUBE2\";\r\n    decimals = 18;\r\n    _totalSupply    = 0 * 10**uint(decimals);\r\n    balances[owner] = _totalSupply;\r\n    emit Transfer(address(0), owner, _totalSupply);\r\n  }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Total supply\r\n  // ------------------------------------------------------------------------\r\n  function totalSupply() public override view returns (uint) {\r\n    return _totalSupply  - balances[address(0)];\r\n  }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Get the token balance for account `tokenOwner`\r\n  // ------------------------------------------------------------------------\r\n  function balanceOf(address tokenOwner) public override view returns (uint balance) {\r\n    return balances[tokenOwner];\r\n  }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Transfer the balance from token owner\u0027s account to `to` account\r\n  // - Owner\u0027s account must have sufficient balance to transfer\r\n  // - 0 value transfers are allowed\r\n  // ------------------------------------------------------------------------\r\n  function transfer(address to, uint tokens) public override returns (bool success) {\r\n    balances[msg.sender] = balances[msg.sender].sub(tokens);\r\n    balances[to] = balances[to].add(tokens);\r\n    emit Transfer(msg.sender, to, tokens);\r\n    return true;\r\n  }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Token owner can approve for `spender` to transferFrom(...) `tokens`\r\n  // from the token owner\u0027s account\r\n  //\r\n  // https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md\r\n  // recommends that there are no checks for the approval double-spend attack\r\n  // as this should be implemented in user interfaces\r\n  // ------------------------------------------------------------------------\r\n  function approve(address spender, uint tokens) public override returns (bool success) {\r\n    allowed[msg.sender][spender] = tokens;\r\n    emit Approval(msg.sender, spender, tokens);\r\n    return true;\r\n  }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Transfer `tokens` from the `from` account to the `to` account\r\n  //\r\n  // The calling account must already have sufficient tokens approve(...)-d\r\n  // for spending from the `from` account and\r\n  // - From account must have sufficient balance to transfer\r\n  // - Spender must have sufficient allowance to transfer\r\n  // - 0 value transfers are allowed\r\n  // ------------------------------------------------------------------------\r\n  function transferFrom(address from, address to, uint tokens) public override returns (bool success) {\r\n    balances[from] = balances[from].sub(tokens);\r\n    allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens);\r\n    balances[to] = balances[to].add(tokens);\r\n    emit Transfer(from, to, tokens);\r\n    return true;\r\n  }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Returns the amount of tokens approved by the owner that can be\r\n  // transferred to the spender\u0027s account\r\n  // ------------------------------------------------------------------------\r\n  function allowance(address tokenOwner, address spender) public view override returns (uint remaining) {\r\n    return allowed[tokenOwner][spender];\r\n  }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Token owner can approve for `spender` to transferFrom(...) `tokens`\r\n  // from the token owner\u0027s account. The `spender` contract function\r\n  // `receiveApproval(...)` is then executed\r\n  // ------------------------------------------------------------------------\r\n  function approveAndCall(address spender, uint tokens, bytes memory data) public returns (bool success) {\r\n    allowed[msg.sender][spender] = tokens;\r\n    emit Approval(msg.sender, spender, tokens);\r\n    ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, address(this), data);\r\n    return true;\r\n  }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Update chief address from chief contract\r\n  // ------------------------------------------------------------------------\r\n  function updateChief(address _chief) public onlyOwner {\r\n      chief = _chief;\r\n  }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Mint token\r\n  // ------------------------------------------------------------------------\r\n  function mint(address _address, uint amount) public onlyOwner {\r\n      _mint(_address, amount);\r\n  }\r\n\r\n  function farmMint(address _address, uint amount) external onlyChief {\r\n      _mint(_address, amount);\r\n  }\r\n\r\n  function _mint(address account, uint256 amount) internal {\r\n    require(account != address(0), \"ERC20: mint to the zero address\");\r\n    _totalSupply = _totalSupply.add(amount);\r\n    balances[account] = balances[account].add(amount);\r\n    emit Transfer(address(0), account, amount);\r\n  }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Burn token\r\n  // ------------------------------------------------------------------------\r\n  function burn(address account, uint256 amount) public onlyOwner {\r\n        require(account != address(0), \"ERC20: burn from the zero address\");\r\n        require(balances[account] \u003e= amount, \"ERC20: burn amount exceeds balance\");\r\n        balances[account] = balances[account].sub(amount);\r\n        _totalSupply = _totalSupply.sub(amount);\r\n        emit Transfer(account, address(0), amount);\r\n    }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Don\u0027t accept ETH\r\n  // ------------------------------------------------------------------------\r\n  fallback() external payable {\r\n    revert();\r\n  }\r\n\r\n  // ------------------------------------------------------------------------\r\n  // Owner can transfer out any accidentally sent ERC20 tokens\r\n  // ------------------------------------------------------------------------\r\n  function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {\r\n    return ERC20Interface(tokenAddress).transfer(owner, tokens);\r\n  }\r\n}\r\n"}}