pragma solidity ^0.4.18;

contract ellaDoubler {
    
    address public owner;/ the operator
    address[] private depositor;/ depositors list
    uint[] private depositAmount;
    uint[] private toReceive;
    uint private depositToFee;
    uint public Fee;/ value is a percentage (1%)
    uint public Payout;/ value is a percentage (12%)
    uint public maximumDeposit;/ maximum deposit to participate, surplus is counted as donation
    uint public minimumDeposit;/ minimum deposit to participate, anything below is counted as donation
    uint public lineNumber;
    uint public usersWaitingInLine;

    
    function ellaDoubler() public {/ constructor
        owner = msg.sender;
        Fee = 1;
        Payout = 12;
        maximumDeposit = 1000000000000000000;
        minimumDeposit = 10000000000000000;
        lineNumber = 0;
        usersWaitingInLine = 0;
    }
    
    function () private payable {
        if (msg.value > maximumDeposit || msg.value < minimumDeposit) {
            // user is donating
            if (msg.value > 0) {
                owner.transfer(msg.value);
            } else {
                return;
            }
        } else {
            depositToFee = msg.value;
            usersWaitingInLine++;
            depositor.push(msg.sender);
            depositAmount.push(msg.value);
            toReceive.push(msg.value + (msg.value 100 * Payout));
            payOperatorFee();/ pay the fee to the Operator
            if (this.balance >= toReceive[lineNumber]) {
                depositor[lineNumber].transfer(toReceive[lineNumber]);
                lineNumber++;
                usersWaitingInLine--;
            }
        }
    }
    
    function nextInLine() public view returns (address, uint, uint) {
        return (depositor[lineNumber], toReceive[lineNumber], lineNumber);
    }
    
    function payOperatorFee() private returns (bool) {
        if (this.balance > 0) {
            owner.transfer(depositToFee 100 * Fee);
            return true;
        } else {
            return false;
        }
    }
}