commit

2025-12-18 13:07:35 +08:00
commit 76b7f838db
271 changed files with 88812 additions and 0 deletions
--- a/contracts/ytLp/tokens/YTToken.sol
+++ b/contracts/ytLp/tokens/YTToken.sol
@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
+
+/**
+ * @title YTToken
+ * @notice YT代币示例实现（Yield Token）
+ * @dev 展示如何实现价格接口供YTPriceFeed读取
+ */
+contract YTToken is ERC20, Ownable {
+
+    error NotUpdater();
+    error InvalidUpdater();
+    error IntervalTooLong();
+    error UpdateTooFrequent();
+    error InvalidYield();
+    error InvalidAmount();
+    error InsufficientAssets();
+    
+    uint256 public constant PRICE_PRECISION = 10 ** 30;
+    
+    uint256 public totalAssets;
+    uint256 public accumulatedYield;
+    
+    // 价格变量
+    uint256 public assetPrice;
+    uint256 public lastPriceUpdate;
+    
+    // 价格更新控制
+    address public priceUpdater;
+    uint256 public minUpdateInterval = 5 minutes; // 最小更新间隔
+    
+    event PriceUpdated(uint256 oldPrice, uint256 newPrice, uint256 timestamp);
+    event YieldAccumulated(uint256 amount, uint256 timestamp);
+    event PriceUpdaterSet(address indexed updater);
+    event MinUpdateIntervalSet(uint256 interval);
+    
+    modifier onlyPriceUpdater() {
+        if (msg.sender != priceUpdater && msg.sender != owner()) revert NotUpdater();
+        _;
+    }
+    
+    constructor(
+        string memory name,
+        string memory symbol,
+        address _priceUpdater
+    ) ERC20(name, symbol) Ownable(msg.sender) {
+        assetPrice = PRICE_PRECISION; // 初始价格为1
+        lastPriceUpdate = block.timestamp;
+        priceUpdater = _priceUpdater;
+    }
+    
+    /**
+     * @notice 设置价格更新者
+     */
+    function setPriceUpdater(address _updater) external onlyOwner {
+        if (_updater == address(0)) revert InvalidUpdater();
+        priceUpdater = _updater;
+        emit PriceUpdaterSet(_updater);
+    }
+    
+    /**
+     * @notice 设置最小更新间隔
+     */
+    function setMinUpdateInterval(uint256 _interval) external onlyOwner {
+        if (_interval > 1 hours) revert IntervalTooLong();
+        minUpdateInterval = _interval;
+        emit MinUpdateIntervalSet(_interval);
+    }
+    
+    /**
+     * @notice 更新代币价格
+     * @dev 只能由授权的updater调用，有最小时间间隔限制
+     */
+    function updatePrice() public onlyPriceUpdater {
+        if (block.timestamp < lastPriceUpdate + minUpdateInterval) revert UpdateTooFrequent();
+        
+        uint256 oldPrice = assetPrice;
+        uint256 supply = totalSupply();
+        
+        if (supply == 0) {
+            assetPrice = PRICE_PRECISION;
+        } else {
+            uint256 totalValue = totalAssets + accumulatedYield;
+            // 计算每个token对应的USDC价值（18位精度）
+            uint256 usdcPerToken = totalValue * 1e18 / supply;
+            // 转换为30位精度的价格
+            assetPrice = usdcPerToken * PRICE_PRECISION / 1e18;
+        }
+        
+        lastPriceUpdate = block.timestamp;
+        
+        emit PriceUpdated(oldPrice, assetPrice, block.timestamp);
+    }
+    
+    /**
+     * @notice 累积收益并更新价格
+     * @dev 当从收益策略中收到新收益时调用
+     */
+    function updateYield(uint256 _newYield) external onlyPriceUpdater {
+        if (_newYield == 0) revert InvalidYield();
+        
+        accumulatedYield += _newYield;
+        
+        emit YieldAccumulated(_newYield, block.timestamp);
+        
+        // 收益更新后立即更新价格
+        if (block.timestamp >= lastPriceUpdate + minUpdateInterval) {
+            uint256 oldPrice = assetPrice;
+            uint256 supply = totalSupply();
+            
+            if (supply > 0) {
+                uint256 totalValue = totalAssets + accumulatedYield;
+                uint256 usdcPerToken = totalValue * 1e18 / supply;
+                assetPrice = usdcPerToken * PRICE_PRECISION / 1e18;
+            }
+            
+            lastPriceUpdate = block.timestamp;
+            emit PriceUpdated(oldPrice, assetPrice, block.timestamp);
+        }
+    }
+    
+    /**
+     * @notice 存入资产（模拟）
+     * @dev 实际实现中应该处理真实的USDC存款
+     */
+    function deposit(uint256 _amount) external onlyOwner {
+        if (_amount == 0) revert InvalidAmount();
+        totalAssets += _amount;
+        _mint(msg.sender, _amount);
+    }
+    
+    /**
+     * @notice 提取资产（模拟）
+     * @dev 实际实现中应该处理真实的USDC提款
+     */
+    function withdraw(uint256 _amount) external onlyOwner {
+        if (_amount == 0) revert InvalidAmount();
+        if (totalAssets < _amount) revert InsufficientAssets();
+        totalAssets -= _amount;
+        _burn(msg.sender, _amount);
+    }
+    
+    /**
+     * @notice 获取当前价格信息
+     */
+    function getPriceInfo() external view returns (
+        uint256 price,
+        uint256 lastUpdate,
+        uint256 timeSinceUpdate,
+        uint256 totalVal
+    ) {
+        price = assetPrice;
+        lastUpdate = lastPriceUpdate;
+        timeSinceUpdate = block.timestamp - lastPriceUpdate;
+        totalVal = totalAssets + accumulatedYield;
+    }
+}
+