// Vulnerability label: TOD1
pragma solidity ^0.4.18; // solhint-disable-line

/* 
SHOW ME WHAT YOU GOT
        ___          
    . -^   `--,      
   /# =========`-_   
  /# (--====___====\ 
 /#   .- --.  . --.| 
/##   |  * ) (   * ),
|##   \    /\ \   / |
|###   ---   \ ---  |
|####      ___)    #|
|######           ##|
 \##### ---------- / 
  \####           (  
   `\###          |  
     \###         |  
      \##        |   
       \###.    .)   
        `======/    

*/
// similar to the original shrimper , with these changes:
// 0. already initialized
// 1. the "free" 314 Morties cost 0.001 eth (in line with the mining fee)
// 2. bots should have a harder time, and whales can compete for the devfee


contract RickAndMortyShrimper{
    string public name = "RickAndMortyShrimper";
	string public symbol = "RickAndMortyS";
    //uint256 morties_PER_RickAndMorty_PER_SECOND=1;
    uint256 public morties_TO_HATCH_1RickAndMorty=86400;//for final version should be seconds in a day
    uint256 public STARTING_RickAndMorty=314;
    uint256 PSN=10000;
    uint256 PSNH=5000;
    bool public initialized=true;
    address public ceoAddress;
    mapping (address => uint256) public hatcheryRickAndMorty;
    mapping (address => uint256) public claimedmorties;
    mapping (address => uint256) public lastHatch;
    mapping (address => address) public referrals;
    uint256 public marketmorties = 1000000000;
    uint256 public RnMmasterReq=100000;
    
    function RickAndMortyShrimper() public{
        ceoAddress=msg.sender;
    }
    modifier onlyCEO(){
		require(msg.sender == ceoAddress );
		_;
	}
    function becomePickleRick() public{
        require(initialized);
        require(hatcheryRickAndMorty[msg.sender]>=RnMmasterReq);
        hatcheryRickAndMorty[msg.sender]=SafeMath.sub(hatcheryRickAndMorty[msg.sender],RnMmasterReq);
        RnMmasterReq=SafeMath.add(RnMmasterReq,100000);//+100k RickAndMortys each time
        ceoAddress=msg.sender;
    }
    function hatchMorties(address ref) public{
        require(initialized);
        if(referrals[msg.sender]==0 && referrals[msg.sender]!=msg.sender){
            referrals[msg.sender]=ref;
        }
        uint256 mortiesUsed=getMymorties();
        uint256 newRickAndMorty=SafeMath.div(mortiesUsed,morties_TO_HATCH_1RickAndMorty);
        hatcheryRickAndMorty[msg.sender]=SafeMath.add(hatcheryRickAndMorty[msg.sender],newRickAndMorty);
        claimedmorties[msg.sender]=0;
        lastHatch[msg.sender]=now;
        
        //send referral morties
        claimedmorties[referrals[msg.sender]]=SafeMath.add(claimedmorties[referrals[msg.sender]],SafeMath.div(mortiesUsed,5));
        
        //boost market to nerf RickAndMorty hoarding
        marketmorties=SafeMath.add(marketmorties,SafeMath.div(mortiesUsed,10));
    }
    function sellMorties() public{
        require(initialized);
        uint256 hasmorties=getMymorties();
        uint256 eggValue=calculatemortiesell(hasmorties);
        uint256 fee=devFee(eggValue);
        claimedmorties[msg.sender]=0;
        lastHatch[msg.sender]=now;
        marketmorties=SafeMath.add(marketmorties,hasmorties);
        ceoAddress.transfer(fee);
    }
    function buyMorties() public payable{
        require(initialized);
        uint256 mortiesBought=calculateEggBuy(msg.value,SafeMath.sub(this.balance,msg.value));
        mortiesBought=SafeMath.sub(mortiesBought,devFee(mortiesBought));
        ceoAddress.transfer(devFee(msg.value));
        claimedmorties[msg.sender]=SafeMath.add(claimedmorties[msg.sender],mortiesBought);
    }
    //magic trade balancing algorithm
    function calculateTrade(uint256 rt,uint256 rs, uint256 bs) public view returns(uint256){
        //(PSN*bs)/(PSNH+((PSN*rs+PSNH*rt)/rt));
        return SafeMath.div(SafeMath.mul(PSN,bs),SafeMath.add(PSNH,SafeMath.div(SafeMath.add(SafeMath.mul(PSN,rs),SafeMath.mul(PSNH,rt)),rt)));
    }
    function calculatemortiesell(uint256 morties) public view returns(uint256){
        return calculateTrade(morties,marketmorties,this.balance);
    }
    function calculateEggBuy(uint256 eth,uint256 contractBalance) public view returns(uint256){
        return calculateTrade(eth,contractBalance,marketmorties);
    }
    function calculateEggBuySimple(uint256 eth) public view returns(uint256){
        return calculateEggBuy(eth,this.balance);
    }
    function devFee(uint256 amount) public view returns(uint256){
        return SafeMath.div(SafeMath.mul(amount,4),100);
    }
    function seedMarket(uint256 morties) public payable{
        require(marketmorties==0);
        initialized=true;
        marketmorties=morties;
    }
    function getFreeRickAndMorty() public payable{
        require(initialized);
        require(msg.value==0.001 ether); //similar to mining fee, prevents bots
        ceoAddress.transfer(msg.value); //RnMmaster gets this entrance fee
        require(hatcheryRickAndMorty[msg.sender]==0);
        lastHatch[msg.sender]=now;
        hatcheryRickAndMorty[msg.sender]=STARTING_RickAndMorty;
    }
    function getBalance() public view returns(uint256){
        return this.balance;
    }
    function getMyRickAndMorty() public view returns(uint256){
        return hatcheryRickAndMorty[msg.sender];
    }
    function getRnMmasterReq() public view returns(uint256){
        return RnMmasterReq;
    }
    function getMymorties() public view returns(uint256){
        return SafeMath.add(claimedmorties[msg.sender],getmortiesSinceLastHatch(msg.sender));
    }
    function getmortiesSinceLastHatch(address adr) public view returns(uint256){
        uint256 secondsPassed=min(morties_TO_HATCH_1RickAndMorty,SafeMath.sub(now,lastHatch[adr]));
        return SafeMath.mul(secondsPassed,hatcheryRickAndMorty[adr]);
    }
    function min(uint256 a, uint256 b) private pure returns (uint256) {
        return a < b ? a : b;
    }
    function transferOwnership() onlyCEO public {
		uint256 etherBalance = this.balance;
		ceoAddress.transfer(etherBalance);
	}
}

library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
  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;
  }

  /**
  * @dev Integer division of two numbers, truncating the quotient.
  */
  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;
  }

  /**
  * @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
  */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  /**
  * @dev Adds two numbers, throws on overflow.
  */
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }
}