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change WUSD payment to USDC

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This commit is contained in:
Kiro
2025-12-24 16:41:26 +08:00
parent d2e9377f78
commit e21ee7a5df
160 changed files with 6038 additions and 4050 deletions
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50
contracts/ytLending/Lending.sol
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@@ -12,7 +12,7 @@ import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "./LendingStorage.sol";
import "./LendingMath.sol";
import "../interfaces/ILending.sol";
import "../interfaces/IPriceFeed.sol";
import "../interfaces/IYTLendingPriceFeed.sol";
/**
* @title Lending
@@ -45,7 +45,7 @@ contract Lending is
// 设置基础配置
baseToken = config.baseToken;
baseTokenPriceFeed = config.baseTokenPriceFeed;
lendingPriceSource = config.lendingPriceSource;
// 常量：一年的秒数
uint64 SECONDS_PER_YEAR = 365 * 24 * 60 * 60; // 31,536,000
@@ -327,7 +327,7 @@ contract Lending is
if (oldBalance >= 0) revert NotLiquidatable();
// 计算所有抵押品的总价值（按 liquidationFactor 折扣）
uint256 basePrice = IPriceFeed(baseTokenPriceFeed).getPrice();
uint256 basePrice = IYTLendingPriceFeed(lendingPriceSource).getPrice(baseToken);
uint256 totalCollateralValue = 0;
for (uint i = 0; i < assetList.length; i++) {
@@ -336,7 +336,7 @@ contract Lending is
if (collateralAmount > 0) {
AssetConfig memory assetConfig = assetConfigs[asset];
uint256 assetPrice = IPriceFeed(assetConfig.priceFeed).getPrice();
uint256 assetPrice = IYTLendingPriceFeed(lendingPriceSource).getPrice(asset);
// 计算抵押品价值（USD，8位精度）- 用于事件记录
uint256 assetScale = 10 ** assetConfig.decimals;
@@ -454,24 +454,44 @@ contract Lending is
/**
* @notice 计算支付指定baseAmount可购买的抵押品数量
* @dev 重新设计以避免在 1e30 价格精度下溢出
*/
function quoteCollateral(address asset, uint256 baseAmount) public view override returns (uint256) {
AssetConfig memory assetConfig = assetConfigs[asset];
uint256 assetPrice = IPriceFeed(assetConfig.priceFeed).getPrice();
uint256 basePrice = IPriceFeed(baseTokenPriceFeed).getPrice();
uint256 assetPrice = IYTLendingPriceFeed(lendingPriceSource).getPrice(asset);
uint256 basePrice = IYTLendingPriceFeed(lendingPriceSource).getPrice(baseToken);
uint256 FACTOR_SCALE = 1e18;
uint256 baseScale = 10 ** uint256(IERC20Metadata(baseToken).decimals());
uint256 assetScale = 10 ** uint256(assetConfig.decimals);
// 折扣因子
// 计算折扣因子
uint256 discountFactor = (storeFrontPriceFactor * (FACTOR_SCALE - assetConfig.liquidationFactor)) / FACTOR_SCALE;
// 分子: basePrice * baseAmount * assetScale * FACTOR_SCALE
// 分母: assetPrice * (FACTOR_SCALE - discountFactor) * baseScale
return (basePrice * baseAmount * assetScale * FACTOR_SCALE) /
(assetPrice * (FACTOR_SCALE - discountFactor) * baseScale);
// 计算折扣后的资产价格 (保持 1e30 精度)
uint256 effectiveAssetPrice = (assetPrice * (FACTOR_SCALE - discountFactor)) / FACTOR_SCALE;
// 为了避免溢出，我们需要重新排列计算:
// result = (basePrice * baseAmount * assetScale) / (effectiveAssetPrice * baseScale)
//
// 由于所有价格都是 1e30 精度，我们可以先约简价格:
// priceRatio = basePrice / effectiveAssetPrice (保持精度)
// result = (baseAmount * priceRatio * assetScale) / (1e30 * baseScale)
//
// 但为了避免精度损失，我们分步计算:
// step1 = baseAmount * assetScale / baseScale (token amount conversion)
// step2 = step1 * basePrice / effectiveAssetPrice (price conversion)
// 如果 baseScale 和 assetScale 相同(都是18)，可以简化
if (baseScale == assetScale) {
// result = baseAmount * basePrice / effectiveAssetPrice
return (baseAmount * basePrice) / effectiveAssetPrice;
} else {
// 一般情况：分步计算避免溢出
uint256 adjustedAmount = (baseAmount * assetScale) / baseScale;
return (adjustedAmount * basePrice) / effectiveAssetPrice;
}
}
/**
@@ -486,7 +506,7 @@ contract Lending is
uint256 debt = uint256(-balance);
// 将 debt 转换为美元价值（使用 baseToken 价格）
uint256 basePrice = IPriceFeed(baseTokenPriceFeed).getPrice();
uint256 basePrice = IYTLendingPriceFeed(lendingPriceSource).getPrice(baseToken);
uint256 baseDecimals = IERC20Metadata(baseToken).decimals();
uint256 debtValue = (debt * basePrice) / (10 ** baseDecimals);
@@ -508,7 +528,7 @@ contract Lending is
uint256 amount = userCollateral[account][asset];
if (amount > 0) {
AssetConfig memory config = assetConfigs[asset];
uint256 price = IPriceFeed(config.priceFeed).getPrice();
uint256 price = IYTLendingPriceFeed(lendingPriceSource).getPrice(asset);
uint256 value = LendingMath.getCollateralValue(amount, price, config.decimals);
totalValue += (value * config.borrowCollateralFactor) / 1e18;
}
@@ -553,7 +573,7 @@ contract Lending is
uint256 debt = uint256(-balance);
// 将 debt 转换为美元价值（使用 baseToken 价格和 price feed 精度）
uint256 basePrice = IPriceFeed(baseTokenPriceFeed).getPrice();
uint256 basePrice = IYTLendingPriceFeed(lendingPriceSource).getPrice(baseToken);
uint256 baseDecimals = IERC20Metadata(baseToken).decimals();
uint256 debtValue = (debt * basePrice) / (10 ** baseDecimals);
@@ -564,7 +584,7 @@ contract Lending is
uint256 amount = userCollateral[account][asset];
if (amount > 0) {
AssetConfig memory config = assetConfigs[asset];
uint256 price = IPriceFeed(config.priceFeed).getPrice();
uint256 price = IYTLendingPriceFeed(lendingPriceSource).getPrice(asset);
uint256 value = LendingMath.getCollateralValue(amount, price, config.decimals);
collateralValue += (value * config.liquidateCollateralFactor) / 1e18;
}