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add big formula and prepare treasury redemption; not tested yet

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Signed-off-by: Uncle Fatso <uncle.fatso@ghostchain.io>
This commit is contained in:
Uncle Fatso 2025-10-08 13:58:40 +03:00
parent 02c0d51335
commit 7c9c9f90de
Signed by: f4ts0
GPG Key ID: 565F4F2860226EBB
1 changed files with 35 additions and 31 deletions
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66
src/Treasury.sol
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@ -4,10 +4,14 @@ pragma solidity ^0.8.20;
import "@openzeppelin-contracts/token/ERC20/IERC20.sol";
import "@openzeppelin-contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "@openzeppelin-contracts/token/ERC20/utils/SafeERC20.sol";
import "@uniswap-v2-core-1.0.1/interfaces/IUniswapV2Factory.sol";
import "@uniswap-v2-core-1.0.1/interfaces/IUniswapV2Pair.sol";
import "@uniswap-v2-periphery-1.1.0-beta.0/interfaces/IUniswapV2Router02.sol";
import "@uniswap-v2-periphery-1.1.0-beta.0/interfaces/IUniswapV2Router01.sol";
import "./types/GhostAccessControlled.sol";
import "./libraries/FixedPoint.sol";
import "./interfaces/IFTSO.sol";
import "./interfaces/ISTNK.sol";
@ -211,58 +215,58 @@ contract GhostTreasury is GhostAccessControlled, ITreasury {
emit Permissioned(toDisable, status, false);
}
function _quantityToBeSwapped(uint256 xa, uint256 x1) internal pure returns (uint256) {
uint256 y1 = x1 * 1994 / 1000;
uint256 y2 = Babylonian.sqrt(y1**2 + 4 * xa * x1 * 997 / 1000);
return (y2 - y1) * 1000 / 1994;
}
function redeemReserve(
address router, // could be an issue
address token,
uint256 swapAmount,
uint256 liquidityAmount
uint256 amount,
uint256 slippage
) external onlyGovernor {
uint256 deadline = block.timestamp; // No delays in timestamp
address weth = IUniswapV2Router01(router).WETH();
address pair = IUniswapV2Factory(IUniswapV2Router01(router).factory()).getPair(ftso, weth);
// Reconstruct path based on token address.
// Avoid user's input error.
IERC20(weth).approve(router, amount + 1);
(uint256 reserve0, uint256 reserve1,) = IUniswapV2Pair(pair).getReserves();
address[] memory path;
if (token < weth) {
path[0] = token;
if (ftso < weth) {
path[0] = ftso;
path[1] = weth;
reserve0 = reserve1 ^ reserve0;
reserve1 = reserve1 ^ reserve0;
reserve0 = reserve1 ^ reserve0;
} else {
path[0] = weth;
path[1] = token;
}
uint256 totalAmount = swapAmount + liquidityAmount;
if (IERC20(token).allowance(address(this), router) <= totalAmount) {
IERC20(token).approve(router, totalAmount + 1);
}
uint256[] memory amounts = IUniswapV2Router02(router).getAmountsOut(swapAmount, path);
uint256 amountOut = amounts[0];
if (token < weth) {
amountOut = amounts[1];
path[1] = ftso;
}
uint256 amountIn = _quantityToBeSwapped(amount, reserve0);
uint256[] memory amounts = IUniswapV2Router02(router).getAmountsOut(amountIn, path);
IUniswapV2Router02(router).swapExactTokensForTokens(
swapAmount,
amountOut,
amountIn,
amounts[0],
path,
address(this),
deadline
block.timestamp
);
if (IERC20(weth).allowance(address(this), router) <= amountOut) {
IERC20(token).approve(router, amountOut + 1);
}
amountIn = amount - amountIn;
IERC20(ftso).approve(router, amountIn + 1);
IUniswapV2Router02(router).addLiquidity(
path[0],
path[1],
liquidityAmount,
amountOut,
liquidityAmount,
amountOut,
amountIn,
amounts[0],
amountIn * (1e7 - slippage) / 1e7,
amounts[0] * (1e7 - slippage) / 1e7,
address(this),
deadline
block.timestamp
);
}