Oracle Integration

// Import the ConsumerBase contract
import "@unification/ooo/contracts/ConsumerBase.sol";

contract ShibaswapOracle is ConsumerBase {
    // Oracle request functions
    function requestPriceData(
        string memory _symbol,
        uint256 _timestamp
    ) external returns (bytes32 requestId) {
        // Request price data from OoO
        return _requestData(_symbol, _timestamp);
    }
    
    // Callback function to receive oracle data
    function _fulfillData(
        bytes32 _requestId,
        bytes memory _data
    ) internal override {
        // Process received oracle data
        (uint256 price, uint256 timestamp) = abi.decode(_data, (uint256, uint256));
        
        // Update internal price feeds
        _updatePriceFeed(_requestId, price, timestamp);
    }
}

// Price feed storage
mapping(bytes32 => uint256) public priceFeeds;
mapping(bytes32 => uint256) public lastUpdateTime;

function _updatePriceFeed(
    bytes32 _requestId,
    uint256 _price,
    uint256 _timestamp
) internal {
    priceFeeds[_requestId] = _price;
    lastUpdateTime[_requestId] = _timestamp;
    
    emit PriceUpdated(_requestId, _price, _timestamp);
}

// Get current price for a symbol
function getPrice(string memory _symbol) external view returns (uint256) {
    bytes32 requestId = keccak256(abi.encodePacked(_symbol));
    return priceFeeds[requestId];
}

// Request price data for a specific token
function requestTokenPrice(string memory _symbol) external {
    bytes32 requestId = keccak256(abi.encodePacked(_symbol, block.timestamp));
    
    // Request data through the router
    _requestData(_symbol, block.timestamp);
    
    emit OracleRequested(requestId, _symbol);
}

// Request multiple data points
function requestMarketData(
    string[] memory _symbols,
    uint256 _timestamp
) external {
    for (uint i = 0; i < _symbols.length; i++) {
        bytes32 requestId = keccak256(abi.encodePacked(_symbols[i], _timestamp));
        _requestData(_symbols[i], _timestamp);
        
        emit OracleRequested(requestId, _symbols[i]);
    }
}

// Process received oracle data
function _fulfillData(bytes32 _requestId, bytes memory _data) internal override {
    // Decode the received data
    (uint256 price, uint256 timestamp, uint256 confidence) = abi.decode(
        _data, 
        (uint256, uint256, uint256)
    );
    
    // Validate the data
    require(timestamp > lastUpdateTime[_requestId], "Stale data");
    require(confidence >= MIN_CONFIDENCE, "Low confidence");
    
    // Update price feed
    priceFeeds[_requestId] = price;
    lastUpdateTime[_requestId] = timestamp;
    
    emit PriceUpdated(_requestId, price, timestamp, confidence);
}

// Validate oracle price against internal reserves
function validatePrice(
    address _tokenA,
    address _tokenB,
    uint256 _oraclePrice
) internal view returns (bool) {
    // Get internal pool price
    uint256 poolPrice = getPoolPrice(_tokenA, _tokenB);
    
    // Calculate price deviation
    uint256 deviation = calculateDeviation(poolPrice, _oraclePrice);
    
    // Return true if deviation is within acceptable range
    return deviation <= MAX_PRICE_DEVIATION;
}

// Validate swap price against oracle
function validateSwapPrice(
    address _tokenIn,
    address _tokenOut,
    uint256 _amountIn,
    uint256 _amountOut
) internal view returns (bool) {
    // Get oracle price
    uint256 oraclePrice = getOraclePrice(_tokenIn, _tokenOut);
    
    // Calculate swap price
    uint256 swapPrice = (_amountOut * 1e18) / _amountIn;
    
    // Check if price deviation is acceptable
    uint256 deviation = calculateDeviation(swapPrice, oraclePrice);
    return deviation <= MAX_DEVIATION;
}

// Protect against price manipulation
modifier validPrice(address _tokenIn, address _tokenOut) {
    require(
        validateSwapPrice(_tokenIn, _tokenOut, amountIn, amountOut),
        "Price manipulation detected"
    );
    _;
}

// Execute limit orders based on oracle prices
function executeLimitOrder(
    address _tokenIn,
    address _tokenOut,
    uint256 _amountIn,
    uint256 _limitPrice
) external {
    uint256 currentPrice = getOraclePrice(_tokenIn, _tokenOut);
    
    require(currentPrice >= _limitPrice, "Price not met");
    
    // Execute the swap
    _executeSwap(_tokenIn, _tokenOut, _amountIn);
}

// Implement stop loss functionality
function checkStopLoss(
    address _token,
    uint256 _entryPrice,
    uint256 _stopLossPrice
) external view returns (bool) {
    uint256 currentPrice = getOraclePrice(_token, WETH);
    
    // Check if stop loss should trigger
    return currentPrice <= _stopLossPrice;
}

// Ensure data is fresh
function validateTimestamp(uint256 _timestamp) internal view returns (bool) {
    return block.timestamp - _timestamp <= MAX_AGE;
}

// Check data confidence level
function validateConfidence(uint256 _confidence) internal pure returns (bool) {
    return _confidence >= MIN_CONFIDENCE;
}