// SPDX-License-Identifier: MIT

pragma solidity 0.6.12;

/**
 * @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) {
        // This method relies in extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // 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");
        }
    }
}

contract FaasYtruClaim {
    using SafeMath for uint;
    using SafeERC20 for IERC20;

    IERC20 public tokenValue = IERC20(0x49E833337ECe7aFE375e44F4E3e8481029218E5c);
    address public governance;

    // 5k VALUE
    uint constant TOTAL_AMOUNT = 5000 * 10 ** 18;
    uint constant PRECISION = 10 ** 18;
    uint public totalClaimed = 0;

    mapping(address => uint) poolPercent;

    event Claimed(address indexed user, uint amount);

    constructor() public {
        poolPercent[0x3818c6d5B6c62646aEa6977ed7Ea17C9DD306a26] = uint(98762399899753053);
        poolPercent[0x921e70C38d30A5047400453DF112073386Ea17B7] = uint(88071403505285155);
        poolPercent[0x3eBf99eaB58cC56C0BbeeA39042295a0911f8C54] = uint(86925957751325004);
        poolPercent[0x5294BF14fCdC5cBDFd29C18D74432c8100A60C24] = uint(80450556864786161);
        poolPercent[0x712dEd055A6Cb663fad5B4E12aA00f76485Da181] = uint(66606339504797085);
        poolPercent[0x7D9907f35D4d77661571c7Bef5244E4E2aa460d8] = uint(45864545071870010);
        poolPercent[0xCDcBDe7fF7AC3B2b7E7375B2FEE2a58eb8cdc90c] = uint(36953036435783981);
        poolPercent[0x73b766D4AF2a30c55acf0494Df6d46c2A2CAc0F4] = uint(36479570549366388);
        poolPercent[0x5fE6e1F5E8E68B8D26c47c59A668e662d3120C49] = uint(35833575959083266);
        poolPercent[0xe2043692C3F8D14f7EE42A5A83D5278Dbd4142c5] = uint(35833575959083265);
        poolPercent[0x880E14298Dd46418806F7B5e12B92Aa9873bB5D4] = uint(22065501339072763);
        poolPercent[0xBf1980eDf790B83AAC6B81bc47De19204AbcC58f] = uint(20079066931476054);
        poolPercent[0x66Dfe8a1fe22dB26bcBC408eB4968074846dBbCd] = uint(19307473992345985);
        poolPercent[0xa26674116c72cF19e3e7855864Afe9C8F18a84B2] = uint(19020178105869630);
        poolPercent[0x3c9bB7607D02Ca116274271C066345AA74c52fC3] = uint(18179889177146981);
        poolPercent[0x976d3493dfa5cBB315209E7A579165a2422822AE] = uint(18147019474964603);
        poolPercent[0xc4F1f0424169e14BA21A5bde2d22a61adDebb264] = uint(18044984717335213);
        poolPercent[0xf8fF20Ec289d14372F17F445aAA9A31A5ebb3948] = uint(18033884006320090);
        poolPercent[0x9f57bBf1Ffd0cE7a745fD251d44C041348d4cfb2] = uint(17596684017039990);
        poolPercent[0x762b9fA09B4679b0E774a501326E09bfFfB7b4F8] = uint(17508700596954791);
        poolPercent[0x3365Fe1aFb39C2408f89a7D1e24d198CBA29d2D5] = uint(17322154953375302);
        poolPercent[0x34Be626a066E3B76CbCD2c78C098ed5CA061060c] = uint(16716849816187991);
        poolPercent[0x42FF55335c64E415a84b6CFeB2691DA57278e221] = uint(16230433179041313);
        poolPercent[0xfa47bcCe07AbE8a4e2E3d7a1116c0a508251f41F] = uint(16098956953701023);
        poolPercent[0xF8E78Bad6DD4a10f025027A13b3167AFD6CBE3E5] = uint(15973120834587238);
        poolPercent[0x188f287eE02d7Ca1fdC64B464cDac6d797A82E34] = uint(15391310494197682);
        poolPercent[0x9BCeE25fcf7512500272520e4e396ED80C3dea14] = uint(11148367590479501);
        poolPercent[0x60C1734cf1D78082E2849EC545Ce90E90781BD6f] = uint(9869260004291480);
        poolPercent[0x2fCc7e3536bFaaa458413b775761eDA44124F680] = uint(9527125567330223);
        poolPercent[0x5AD429c8fc1A9814a6799ccE2E3D7Cd2f2DBcEdd] = uint(9147226323036739);
        poolPercent[0xeEA5e57d6a3AC196a5ef302eebB6BF3D662fF5Cb] = uint(9125282443995584);
        poolPercent[0x6794471ebC084A4ca462C506AfEaBb93d9657c25] = uint(8750585235325117);
        poolPercent[0xf7700944B35C3F85A23E9d77beE065dc4F10d6F7] = uint(7686956986066208);
        poolPercent[0x5b57b83C142e3ADa7e7affB9DfC4904838EA43a7] = uint(7020009620700478);
        poolPercent[0xe14DDA9F2d244bE5aDB5Fb60653B2734a68f1097] = uint(6558284002297366);
        poolPercent[0x5691396FBad14F1663Ca2EFeFb95796ECC6848E2] = uint(4818255005695057);
        poolPercent[0xdb5aFaD5df5cd21998DDC3Ca5C98099AFad621b3] = uint(4587855604263771);
        poolPercent[0xD663354A09aB4b0e67D077a540D77c2740E30290] = uint(3425796086134470);
        poolPercent[0xdc57d303C164ed046878E0F1d79762F7Cf91A214] = uint(2751872704312200);
        poolPercent[0x0e3755d390801da61b8E22f00578E1a921d435b2] = uint(2189056311177052);
        poolPercent[0x7Be4D5A99c903C437EC77A20CB6d0688cBB73c7f] = uint(2117880013617509);
        poolPercent[0x8d61C148A41F67D3b4D19e1532b464121ef865C9] = uint(1969099585987178);
        poolPercent[0x06C2e6964ED853d6234adEAFa1dB512fdA720d8A] = uint(1167617039943122);
        poolPercent[0x49cd01D97068a50b6fad475b02E463E14aDB4033] = uint(642299784596928);

        governance = msg.sender;
    }

    function calcClaimAmount(address user) public view returns (uint) {
        return poolPercent[user].mul(TOTAL_AMOUNT).div(PRECISION);
    }

    function claim() public returns (uint) {
        uint amount = calcClaimAmount(msg.sender);
        require(amount > 0, "amount = 0");
        poolPercent[msg.sender] = 0;
        tokenValue.safeTransfer(msg.sender, amount);
        emit Claimed(msg.sender, amount);
        totalClaimed = totalClaimed.add(amount);
        return amount;
    }

    function setGovernance(address _governance) public {
        require(msg.sender == governance, "!governance");
        governance = _governance;
    }

    /**
     * This function allows governance to take unsupported tokens out of the contract. This is in an effort to make someone whole, should they seriously mess up.
     * There is no guarantee governance will vote to return these. It also allows for removal of airdropped tokens.
     */
    function governanceRecoverUnsupported(IERC20 _token, uint amount, address to) external {
        require(msg.sender == governance, "!governance");
        _token.safeTransfer(to, amount);
    }
}