Donation with smart contract (solidity) [You can use ETH, TRX, ...]

Donation.sol

pragma solidity >=0.5.1 <0.6.0;


library SafeMath {
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        assert(c / a == b);
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        // assert(b > 0); // Solidity automatically throws when dividing by 0
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        assert(b <= a);
        return a - b;
    }

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        assert(c >= a);
        return c;
    }
}

library Objects {
    struct Investment {
        uint256 planId;
        uint256 investmentDate;
        uint256 investment;
        uint256 lastWithdrawalDate;
        uint256 currentDividends;
        bool isExpired;
    }

    struct Plan {
        uint256 dailyInterest;
        uint256 term; //0 means unlimited
        uint256 maxDailyInterest;
    }

    struct Investor {
        address addr;
        uint256 referrerEarnings;
        uint256 availableReferrerEarnings;
        uint256 referrer;
        uint256 planCount;
        mapping(uint256 => Investment) plans;
        uint256 level1RefCount;
        uint256 level2RefCount;
    }
}

contract Ownable {
    address public owner;

    event onOwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev The Ownable constructor sets the original `owner` of the contract to the sender
     * account.
     */
    constructor() public {
        owner = msg.sender;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(msg.sender == owner);
        _;
    }

    /**
     * @dev Allows the current owner to transfer control of the contract to a newOwner.
     * @param _newOwner The address to transfer ownership to.
     */
    function transferOwnership(address _newOwner) public onlyOwner {
        require(_newOwner != address(0));
        emit onOwnershipTransferred(owner, _newOwner);
        owner = _newOwner;
    }
}

contract Donation is Ownable {
    using SafeMath for uint256;
    address owner;
    event fundMoved(address _to, uint256 _amount);
    modifier onlyowner { if (msg.sender == owner) _; }
    address[] _giver;
    uint[] _values;
    uint256  totalDonations_;

    constructor() public {
        owner = msg.sender;
    }
    
    

    function donate() payable  public {
        addGiver(msg.value);
    }

    function moveFund(address payable _to, uint256 _amount) onlyowner  public {
        uint256 balance = address(this).balance;
        //uint amount = _amount;
        if (_amount <= balance) {
            if (_to.send(balance)) {
                emit fundMoved(_to, _amount);    
            } else {
               revert();
            }
        } else {
            revert();
        }
    }

    function getBalance() public view returns (uint256){
        return address(this).balance;
    }
    
    function getAllDonations() public view returns (uint256){
        return totalDonations_;
    }
    
    function addGiver(uint256 _amount) internal {
        _giver.push(msg.sender);
        _values.push(_amount);
        totalDonations_ = totalDonations_.add(_amount);
    }
}