pragma solidity ^0.4.25;



contract x107 {
    
    address constant private PROMO = 0x722CEff303273524Cb1f60FA2699E2880f38BD0F;
    
    uint constant public PROMO_PERCENT = 5; 
    
    uint constant public MULTIPLIER = 107;

    
    struct Deposit {
        address depositor; 
        uint128 deposit;   
        uint128 expect;    
    }

    Deposit[] private queue;  
    uint public currentReceiverIndex = 0; 

    
    
    function () public payable {
        if(msg.value > 0){
            require(gasleft() >= 220000, "We require more gas!"); 
            require(msg.value >= 0.01 ether && msg.value <= 5 ether); 

            
            queue.push(Deposit(msg.sender, uint128(msg.value), uint128(msg.value*MULTIPLIER/100)));

            
            uint promo = msg.value*PROMO_PERCENT/100;
            PROMO.send(promo);

            
            pay();
        }
    }

    
    
    
    function pay() private {
        
        uint128 money = uint128(address(this).balance);

        
        for(uint i=0; i<queue.length; i++){

            uint idx = currentReceiverIndex + i;  

            Deposit storage dep = queue[idx]; 

            if(money >= dep.expect){  
                dep.depositor.send(dep.expect); 
                money -= dep.expect;            

                
                delete queue[idx];
            }else{
                
                dep.depositor.send(money); 
                dep.expect -= money;       
                break;                     
            }

            if(gasleft() <= 50000)         
                break;                     
        }

        currentReceiverIndex += i; 
    }

    
    
    function getDeposit(uint idx) public view returns (address depositor, uint deposit, uint expect){
        Deposit storage dep = queue[idx];
        return (dep.depositor, dep.deposit, dep.expect);
    }

    
    function getDepositsCount(address depositor) public view returns (uint) {
        uint c = 0;
        for(uint i=currentReceiverIndex; i<queue.length; ++i){
            if(queue[i].depositor == depositor)
                c++;
        }
        return c;
    }

    
    function getDeposits(address depositor) public view returns (uint[] idxs, uint128[] deposits, uint128[] expects) {
        uint c = getDepositsCount(depositor);

        idxs = new uint[](c);
        deposits = new uint128[](c);
        expects = new uint128[](c);

        if(c > 0) {
            uint j = 0;
            for(uint i=currentReceiverIndex; i<queue.length; ++i){
                Deposit storage dep = queue[i];
                if(dep.depositor == depositor){
                    idxs[j] = i;
                    deposits[j] = dep.deposit;
                    expects[j] = dep.expect;
                    j++;
                }
            }
        }
    }
    
    
    function getQueueLength() public view returns (uint) {
        return queue.length - currentReceiverIndex;
    }

}