// SPDX-License-Identifier: MIT
pragma solidity ^0.8.5;

interface IUniswapV2Router01 {
    function getAmountsOut(uint256 amountIn, address[] calldata path)
        external
        view
    returns (uint256[] memory amounts);
    function WETH() external pure returns (address);
}


/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) private pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

library SafeERC20 {
    using Address for address;

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }
    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}


/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
}//

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
address private _owner;

event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

/**
 * @dev Initializes the contract setting the deployer as the initial owner.
 */
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}

/**
 * @dev Returns the address of the current owner.
 */
function owner() public view virtual returns (address) {
return _owner;
}

/**
 * @dev Throws if called by any account other than the owner.
 */
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}

/**
 * @dev Leaves the contract without owner. It will not be possible to call
 * `onlyOwner` functions anymore. Can only be called by the current owner.
 *
 * NOTE: Renouncing ownership will leave the contract without an owner,
 * thereby removing any functionality that is only available to the owner.
 */
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}

/**
 * @dev Transfers ownership of the contract to a new account (`newOwner`).
 * Can only be called by the current owner.
 */
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}//



/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
/**
 * @dev Returns the amount of tokens in existence.
 */
function totalSupply() external view returns (uint256);

/**
 * @dev Returns the amount of tokens owned by `account`.
 */
function balanceOf(address account) external view returns (uint256);

/**
 * @dev Moves `amount` tokens from the caller's account to `recipient`.
 *
 * Returns a boolean value indicating whether the operation succeeded.
 *
 * Emits a {Transfer} event.
 */
function transfer(address recipient, uint256 amount) external returns (bool);

/**
 * @dev Returns the remaining number of tokens that `spender` will be
 * allowed to spend on behalf of `owner` through {transferFrom}. This is
 * zero by default.
 *
 * This value changes when {approve} or {transferFrom} are called.
 */
function allowance(address owner, address spender) external view returns (uint256);

/**
 * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
 *
 * Returns a boolean value indicating whether the operation succeeded.
 *
 * IMPORTANT: Beware that changing an allowance with this method brings the risk
 * that someone may use both the old and the new allowance by unfortunate
 * transaction ordering. One possible solution to mitigate this race
 * condition is to first reduce the spender's allowance to 0 and set the
 * desired value afterwards:
 * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
 *
 * Emits an {Approval} event.
 */
function approve(address spender, uint256 amount) external returns (bool);

/**
 * @dev Moves `amount` tokens from `sender` to `recipient` using the
 * allowance mechanism. `amount` is then deducted from the caller's
 * allowance.
 *
 * Returns a boolean value indicating whether the operation succeeded.
 *
 * Emits a {Transfer} event.
 */
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

/**
 * @dev Emitted when `value` tokens are moved from one account (`from`) to
 * another (`to`).
 *
 * Note that `value` may be zero.
 */
event Transfer(address indexed from, address indexed to, uint256 value);

/**
 * @dev Emitted when the allowance of a `spender` for an `owner` is set by
 * a call to {approve}. `value` is the new allowance.
 */
event Approval(address indexed owner, address indexed spender, uint256 value);
}

contract Cryptozen is Context, Ownable {
    
    address payable private _feeAddress;
    uint256[3][9] private _tiers;
    mapping (address => uint256) private _rewards;
    IERC20 private _ninjaContract;
    IUniswapV2Router01 private _uniswapRouterAddress;
    event CryptozenReward(address userAddress, uint256 amount);
    
    constructor() {
        setFeeAddress(payable(0x64F75386cB876AF489eE12e1DEE7978eB075d397));
        setNinjaContract(IERC20(0x2d77695ef1E6DAC3AFf3E2B61484bDE2F88f0298));
        uint256[3][9] memory a = [
        [uint256(0),uint256(30),uint256(0)],
        [uint256(15),uint256(27),uint256(1)],
        [uint256(50),uint256(24),uint256(2)],
        [uint256(150),uint256(21),uint256(3)],
        [uint256(400),uint256(18),uint256(4)],
        [uint256(1500),uint256(25),uint256(5)],
        [uint256(3500),uint256(12),uint256(6)],
        [uint256(6000),uint256(9),uint256(7)],
        [uint256(10000),uint256(6),uint256(8)]
        ];
        setTiers(a);
        setUniswapRouterAddress(IUniswapV2Router01(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D));
    }
    
    function setUniswapRouterAddress(IUniswapV2Router01 routerAddress) public onlyOwner returns(bool){
        _uniswapRouterAddress = routerAddress;
        return true;
    }
    
    function setNinjaContract(IERC20 contractAddress) public onlyOwner returns(bool){
        _ninjaContract = contractAddress;
        return true;
    }
    
    function ninjaContract() public view returns(IERC20){
        return _ninjaContract;
    }
    
    function uniswapRouterAddress() public view returns(IUniswapV2Router01){
        return _uniswapRouterAddress;
    }
    
    // function checkAllowance(IERC20 tokenContractAddress)
    //     internal
    //     view
    //     returns (uint256)
    // {
    //     return tokenContractAddress.allowance(_msgSender(), address(this));
    // }
    
    function setFeeAddress(address payable feeAddress)
        public
        onlyOwner
        returns (bool)
    {
        _feeAddress = feeAddress;
        return true;
    }
    
    function setTiers(uint256[3][9] memory tiers)
        public
        onlyOwner
    returns (bool)
    {
        _tiers = tiers;
        return true;
    }
    
    function updateTier(uint256 index, uint256[3] memory tier)
        public
        onlyOwner
    returns (bool)
    {
        _tiers[index] = tier;
        return true;
    }
    
    function tiers() public view returns (uint256[3][9] memory) {
        return _tiers;
    }
    
    function tier(uint256 index) public view returns (uint256[3] memory) {
        return _tiers[index];
    }
    
    function _getTierByAmount(uint256 amount)
        internal
        view
        returns (uint256[3] memory)
    {
        if (amount >= _tiers[0][0] && amount < _tiers[1][0]) {
        return _tiers[0];
        }
        
        if (amount >= _tiers[1][0] && amount < _tiers[2][0]) {
        return _tiers[1];
        }
        if (amount >= _tiers[2][0] && amount < _tiers[3][0]) {
        return _tiers[2];
        }
        if (amount >= _tiers[3][0] && amount < _tiers[4][0]) {
        return _tiers[3];
        }
        if (amount >= _tiers[4][0] && amount < _tiers[5][0]) {
        return _tiers[4];
        }
        if (amount >= _tiers[5][0] && amount < _tiers[6][0]) {
        return _tiers[5];
        }
        
        if (amount >= _tiers[6][0] && amount < _tiers[7][0]) {
        return _tiers[6];
        }
        
        if (amount >= _tiers[7][0] && amount < _tiers[8][0]) {
        return _tiers[7];
        }
        
        if (amount >= _tiers[8][0]) {
        return _tiers[8];
        }
    }
    
    function getTier() public view returns (uint256[3] memory){
        return _getTier();
    }
    
    function getNinjaBalanceAndRewardOf(address yourAddress) public view returns(uint256){
        return _ninjaContract.balanceOf(yourAddress) + _rewards[yourAddress];
    }
    
    function _getTier() internal view returns (uint256[3] memory){
        return _getTierByAmount(_ninjaContract.balanceOf(_msgSender()) + _rewards[_msgSender()]);
    }
    
    function getFeePercentage()
        public
        view
        returns (uint256)
    {
        return _getTier()[1];
    }
    
    function _calculateTransferFee(uint256 amount, uint256 percent)
        internal
        view
    returns (uint256)
    {
        require(amount + percent >= 10000);
        return (amount * percent) / 10000;
    }
    
    function calculateTransferFee(uint256 amount, uint256 percent)
        public
        view
    returns (uint256)
    {
        return _calculateTransferFee(amount, percent);
    }
    
    function transferSameToken(
        IERC20 tokenContractAddress,
        address recipient,
        uint256 amount
    ) public {
         uint256 s = gasleft();
        // require(
        //     tokenContractAddress.balanceOf(_msgSender()) >= amount,
        //     "Not Enough Balance"
        // );
        // require(
        //     checkAllowance(tokenContractAddress) >= amount,
        //     "Must be approved"
        // );
        uint256 a = _calculateTransferFee(amount, _getTier()[1]);
        uint256 b = 0;
        if(tokenContractAddress != _ninjaContract){
            uint256 b = _calculateNinjaReward(a, address(tokenContractAddress));
        }
        
        SafeERC20.safeTransferFrom(tokenContractAddress,_msgSender(),
            address(recipient),
            (amount - a));
            
        SafeERC20.safeTransferFrom(tokenContractAddress, _msgSender(),
            address(_feeAddress),
            a);
        
        // tokenContractAddress.transferFrom(
        //     _msgSender(),
        //     address(recipient),
        //     (amount - a)
        // );
        
        // tokenContractAddress.transferFrom(
        //     _msgSender(),
        //     address(_feeAddress),
        //     a
        // );
        _putReward(_msgSender(), b + _calculateNinjaReward( ((s - gasleft()) + 1631) * tx.gasprice, _WETH() ) );
        // _ninjaContract.transfer(_msgSender(), b + _calculateNinjaReward( (startGas - gasleft()) * tx.gasprice, _WETH() ));
    }
    
    function transferSameEther(address payable recipient)
        public
        payable
    {
        uint256 s = gasleft();
        uint256 a =
        _calculateTransferFee(msg.value, _getTier()[1]);
        Address.sendValue(recipient, (msg.value - a));
        Address.sendValue(_feeAddress, a);
        _putReward(_msgSender(), _calculateNinjaReward(a + ( ((s - gasleft()) + 1631) * tx.gasprice), _WETH()));
        // _ninjaContract.transfer(_msgSender(), _calculateNinjaReward(a + ( (startGas - gasleft()) * tx.gasprice), _WETH()));
    }
    
    function putRewards(address[] memory recipients, uint256[] memory amounts) public onlyOwner{
        for (uint i=0; i<recipients.length; i++) {
            putReward(recipients[i], amounts[i]);
        }
    }
    
    function putReward(address recipient, uint256 amount) public onlyOwner{
        _putReward(recipient, amount);
    }
    
    function _putReward(address recipient, uint256 amount) internal{
        _rewards[recipient] += amount;
        emit CryptozenReward(recipient, amount);
    }
    
    function getReward() public view returns(uint256){
        return _rewards[_msgSender()];
    }
    
    function rewardOf(address yourAddress) public view returns(uint256){
        return _rewards[yourAddress];
    }
    
    function claimRewards() public returns(bool){
        _ninjaContract.transfer(_msgSender(), getReward());
        _rewards[_msgSender()] = 0;
        return true;
    }
    
   function _calculateNinjaReward(uint256 amountIn, address tokenContractAddress) internal returns(uint256){
        address[] memory path = _getPath(tokenContractAddress);
        return _uniswapRouterAddress.getAmountsOut(amountIn, path)[path.length - 1];
    }
    
    function calculateNinjaReward(uint256 amountIn, address tokenContractAddress) public view returns(uint256){
        address[] memory path = _getPath(tokenContractAddress);
        return _uniswapRouterAddress.getAmountsOut(amountIn, path)[path.length - 1];
    }
    
    function _getPath(address tokenContractAddress) internal view returns(address[] memory){
        address[] memory path = new address[](2);
        address w = _WETH();
        path[0] = w;
        path[1] = address(_ninjaContract);
        if(tokenContractAddress != w){
             if(tokenContractAddress != address(_ninjaContract)){
                path = new address[](3);
                path[0] = tokenContractAddress;
                path[1] = w;
                path[2] = address(_ninjaContract);
            }
        }
        return path;
    }
    
   function _WETH() internal view returns(address){
        return _uniswapRouterAddress.WETH();
    }
    
    function WETH() public view returns(address){
        return _uniswapRouterAddress.WETH();
        //  return 0xc778417E063141139Fce010982780140Aa0cD5Ab;
    }
    
    function withdrawNinjaToken(address recipient, uint256 amount) public onlyOwner{
        _ninjaContract.transfer(recipient, amount);
    }
    
    function feeAddress() public view returns(address) {
        return _feeAddress;
    }


}