pragma solidity ^0.7.0;

interface IQuickSwapRouter {
	function factory() external pure returns (address);

	function WETH() external pure returns (address);

	function addLiquidity(
		address tokenA,
		address tokenB,
		uint256 amountADesired,
		uint256 amountBDesired,
		uint256 amountAMin,
		uint256 amountBMin,
		address to,
		uint256 deadline
	)
		external
		returns (
			uint256 amountA,
			uint256 amountB,
			uint256 liquidity
		);

	function removeLiquidity(
		address tokenA,
		address tokenB,
		uint256 liquidity,
		uint256 amountAMin,
		uint256 amountBMin,
		address to,
		uint256 deadline
	) external returns (uint256 amountA, uint256 amountB);

	function swapExactTokensForTokens(
		uint256 amountIn,
		uint256 amountOutMin,
		address[] calldata path,
		address to,
		uint256 deadline
	) external returns (uint256[] memory amounts);

	function swapTokensForExactTokens(
		uint256 amountOut,
		uint256 amountInMax,
		address[] calldata path,
		address to,
		uint256 deadline
	) external returns (uint256[] memory amounts);

	function quote(
		uint256 amountA,
		uint256 reserveA,
		uint256 reserveB
	) external pure returns (uint256 amountB);

	function getAmountOut(
		uint256 amountIn,
		uint256 reserveIn,
		uint256 reserveOut
	) external pure returns (uint256 amountOut);

	function getAmountIn(
		uint256 amountOut,
		uint256 reserveIn,
		uint256 reserveOut
	) external pure returns (uint256 amountIn);

	function getAmountsOut(uint256 amountIn, address[] calldata path)
		external
		view
		returns (uint256[] memory amounts);

	function getAmountsIn(uint256 amountOut, address[] calldata path)
		external
		view
		returns (uint256[] memory amounts);
}

interface IQuickSwapFactory {
	function getPair(address tokenA, address tokenB)
		external
		view
		returns (address pair);

	function allPairs(uint256) external view returns (address pair);

	function allPairsLength() external view returns (uint256);

	function feeTo() external view returns (address);

	function feeToSetter() external view returns (address);

	function createPair(address tokenA, address tokenB)
		external
		returns (address pair);
}