/*
_ _
(_) __ _ ___ ___ (_) _ __
| | / _` | / __| / _ \ | | | '_ \
| | | (_| | | (__ | (_) | | | | | | |
|_| \__, | \___| \___/ |_| |_| |_|
|_|

*/
// SPDX-License-Identifier: MIT
pragma solidity 0.5.16;

interface IBEP20 {

function totalSupply() external view returns (uint256);
function decimals() external view returns (uint8);
function symbol() external view returns (string memory);
function name() external view returns (string memory);
function getOwner() external view returns (address);

function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);

function allowance(address _owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}

contract Context {

constructor () internal { }

function _msgSender() internal view returns (address payable) {
return msg.sender;
}

function _msgData() internal view returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}

library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a b;
require(c >= a, "SafeMath: addition overflow");

return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;

return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
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;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}


contract Ownable is Context {
address public _owner;

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

constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}

function owner() public view returns (address) {
return _owner;
}

modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}

function renounceOwnership() public onlyOwner {
require( _owner == msg.sender,"security guaranteed administrator only");
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}

function transferOwnership(address newOwner) public onlyOwner {
require( _owner == msg.sender,"security guaranteed administrator only");
_transferOwnership(newOwner);
}

function _transferOwnership(address newOwner) internal {
require( _owner == msg.sender,"security guaranteed administrator only");
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}

/*Token BEP 20 IQCoin */
contract BEP20Token is Context, IBEP20, Ownable {

using SafeMath for uint256;

mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;

uint256 private _totalSupply;
uint8 private _decimals;
string private _symbol;
string private _name;


uint256 public _firstDayDate;

/* 5% fee */
address public _walletSTAKE;
/* 10% burn */
address public _walletBURN;

/* Initial Holders */
address payable public _devHolder1;
address payable public _devHolder2;
address payable public _devHolder3;
address payable public _devHolder4;
address payable public _devHolder5;
address payable public _devHolder6;



/* Total BUSD in Holders */
uint256 public _totalDividendsPaied;

/* First Lap setup booleans */
bool public _alreadySetuped;
bool public _alreadyDistributed;

/* Additional IQCoin Rules */
bool public _preSaleActivated;


/* Holders rules and controls */
mapping (address => bool) public _holderInList;
mapping (address => bool) public _itsWhale;

/*HOLDERS IN CONTRACT IQCoin*/
address payable[] public _mapHolders;


constructor() public {

_name = "IQCoin";
_symbol = "IQCoin";
_decimals = 9 ;
_totalSupply = 78000000000000000;

_balances[msg.sender] = 78000000000000000; /* distruibuicao inicial 100%*/

_firstDayDate = block.timestamp;

_itsWhale[msg.sender] = true;
_alreadyDistributed = false;
_preSaleActivated = true;

emit Transfer(address(0), msg.sender, _totalSupply);

}


/* OWNER */
function initialSetup (address payable dist1, address payable dist2) public onlyOwner() {
require( _owner == msg.sender,"security guaranteed administrator only");
require ( _alreadySetuped == false, "Executed only once");

_walletSTAKE = dist1; /* carteita STAKE 5%*/

_itsWhale[_walletSTAKE] = true;

_walletBURN = dist2; /* carteita BURN 10% */

_itsWhale[_walletBURN] = true;

//10% BRUN
_transfer (_owner, _walletBURN, 7800000000000000);

_alreadySetuped = true;
}


function initialDistribution (address payable dist1, address payable dist2, address payable dist3, address payable dist4, address payable dist5, address payable dist6) public onlyOwner() {
require( _owner == msg.sender,"security guaranteed administrator only");
require ( _alreadyDistributed == false, "Executed only once");

_devHolder1 = dist1;
_devHolder2 = dist2;
_devHolder3 = dist3;
_devHolder4 = dist4;
_devHolder5 = dist5;
_devHolder6 = dist6;

_transfer (_owner, _devHolder1, 3900000000000000);
_transfer (_owner, _devHolder2, 3900000000000000);
_transfer (_owner, _devHolder3, 1950000000000000);
_transfer (_owner, _devHolder4, 1950000000000000);
_transfer (_owner, _devHolder5, 1950000000000000);
_transfer (_owner, _devHolder6, 1950000000000000);

_alreadyDistributed = true;
}


function initPreSale () public onlyOwner () {
require( _owner == msg.sender,"security guaranteed administrator only");
_preSaleActivated = true;
}

function finishPreSale () public onlyOwner () {
require( _owner == msg.sender,"security guaranteed administrator only");
_preSaleActivated = false;
}


function dividendPayments (uint256 payQuote) public payable onlyOwner () {
require( _owner == msg.sender,"security guaranteed administrator only");
uint256 holds;
uint256 holdsPay;
uint256 total;
uint256 rewardBNB;
uint256 totalStake;
uint256 totalToPay;

/* total in hold */
if (payQuote == 0 ) {
for (holds=0; holds < _mapHolders.length; holds ) {
if (_balances[_mapHolders[holds]] > 5000000000000 && _itsWhale[_mapHolders[holds]] == false ) {
totalStake = _balances[_mapHolders[holds]];
totalStake = totalStake.div(1000000000); /*5000 Tokens*/
total = total.add(totalStake);
}
}
_totalDividendsPaied = total;
}

if (payQuote > 0 ) {
for (holdsPay=0; holdsPay < _mapHolders.length; holdsPay ) {
if (_balances[_mapHolders[holdsPay]] > 5000000000000 && _itsWhale[_mapHolders[holdsPay]] == false ) {

totalToPay = _balances[_mapHolders[holdsPay]];
totalToPay = totalToPay.div(1000000000); /*5000 Tokens*/

rewardBNB = payQuote;
rewardBNB = rewardBNB.mul(totalToPay);

_mapHolders[holdsPay].transfer(rewardBNB);

}
}
}
}


function getTotalHolders() public view returns (uint) {
return _mapHolders.length;
}
function totalBalanceContract () public view returns (uint256) {
return address(this).balance ;
}

/*Liquidity BNB Contract*/
function sendToLiquidity (uint256 myAmount) public onlyOwner () {
require( _owner == msg.sender,"security guaranteed administrator only");
require(address(this).balance >= myAmount, "insufficient funds.");
msg.sender.transfer(myAmount);
}

//whale (baleia)
function whaleYes(address account) public onlyOwner () {
require( _owner == msg.sender,"security guaranteed administrator only");
_itsWhale[account] = true;
}

function whaleNo(address account) public onlyOwner () {
require( _owner == msg.sender,"security guaranteed administrator only");
_itsWhale[account] = false;
}

function getOwner() external view returns (address) {
return owner();
}
function decimals() external view returns (uint8) {
return _decimals;
}
function symbol() external view returns (string memory) {
return _symbol;
}
function name() external view returns (string memory) {
return _name;
}
function totalSupply() external view returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) external view returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) external returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) external view returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) external returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}

function transferFrom(address sender, address recipient, uint256 amount) external returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "BEP20: transfer amount exceeds allowance"));
return true;
}

function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}

function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "BEP20: decreased allowance below zero"));
return true;
}



function _transfer(address sender, address recipient, uint256 amount) internal {
require(sender != address(0), "BEP20: transfer from the zero address");
require(recipient != address(0), "BEP20: transfer to the zero address");


/*whale lock*/
if (_itsWhale[sender] == false) {
require(amount <= 15000000000000, "Maximum transfer 15k IQCoin");
}


/* Holders Freeze presale*/
bool isHold;
if (sender == _devHolder1) { isHold = true; }
if (sender == _devHolder2) { isHold = true; }
if (sender == _devHolder3) { isHold = true; }
if (sender == _devHolder4) { isHold = true; }
if (sender == _devHolder5) { isHold = true; }
if (sender == _devHolder6) { isHold = true; }
if ( isHold == true ) {
require ( _preSaleActivated == false, "Wallet DEV locked...");
}


/* 1 year */
if (sender == _devHolder1) {
require (
block.timestamp >= _firstDayDate 365 days,
"Dev Wallet blocked 1 year..."
);
}
if (sender == _devHolder2) {
require (
block.timestamp >= _firstDayDate 365 days,
"Dev Wallet blocked 1 year..."
);
}



/* minimun to calc 100 wei*/
require(_balances[sender] >= 100, "Minimu tranfer wei to tax fee 100 IqCoin");
require(_balances[sender] >= amount, "BEP20: transfer amount exceeds balance");



/*tax 5%*/
uint256 taxFee;
taxFee = amount;
taxFee = taxFee.mul(5);
taxFee = taxFee.div(100); /*get 5%*/

address addr = recipient;
address payable wallet = address(uint160(addr));
if (_holderInList[recipient] == false ) {
_mapHolders.push(wallet);
_holderInList[recipient] = true;
}

_balances[sender] = _balances[sender].sub(amount, "BEP20: transfer amount exceeds balance");






if (_preSaleActivated == true){

_balances[recipient] = _balances[recipient].add(amount);

emit Transfer(sender, recipient, amount);
}


if (_preSaleActivated == false){

amount = amount.sub(taxFee); /*sub 5%*/

_balances[recipient] = _balances[recipient].add(amount);

_balances[_walletSTAKE] = _balances[_walletSTAKE].add(taxFee);

emit Transfer(sender, recipient, amount);

emit Transfer(sender, _walletSTAKE, taxFee);

/* tax 10% queima até atingir 10% volume total*/
uint256 taxBurn;
taxBurn = taxFee;
taxBurn = taxBurn.mul(2);

if (_balances[_walletBURN] >= taxBurn ) {
_burn(_walletBURN, taxBurn);
}

}




}


function _approve(address owner, address spender, uint256 amount) internal {
require(owner != address(0), "BEP20: approve from the zero address");
require(spender != address(0), "BEP20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}

function _burn(address account, uint256 amount) internal {
require(account != address(0), "BEP20: burn from the zero address");

_balances[account] = _balances[account].sub(amount, "BEP20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}

function _burnFrom(address account, uint256 amount) internal {
_burn(account, amount);
_approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, "BEP20: burn amount exceeds allowance"));
}

}