Create oracle_incentives.sol

blockchain_integration/pi_network/pi-stablecoin/advanced_features/oracle_incentives/oracle_incentives.sol

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+pragma solidity ^0.8.0;
+
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/token/ERC20/SafeERC20.sol";
+import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/math/SafeMath.sol";
+
+contract OracleIncentives {
+    // Mapping of oracle nodes
+    mapping (address => OracleNode) public oracleNodes;
+
+    // Mapping of oracle rewards
+    mapping (address => uint256) public oracleRewards;
+
+    // Event emitted when an oracle node submits a price update
+    event PriceUpdate(address indexed oracle, uint256 price);
+
+    // Event emitted when an oracle node is rewarded
+    event Reward(address indexed oracle, uint256 amount);
+
+    // Struct to represent an oracle node
+    struct OracleNode {
+        address node;
+        uint256 reputation;
+        uint256 lastUpdate;
+    }
+
+    // Function to register an oracle node
+    function registerOracleNode(address node) public {
+        // Create a new oracle node
+        OracleNode storage oracleNode = oracleNodes[node];
+        oracleNode.node = node;
+        oracleNode.reputation = 0;
+        oracleNode.lastUpdate = block.timestamp;
+    }
+
+    // Function to submit a price update
+    function submitPriceUpdate(address oracle, uint256 price) public {
+        // Check if the oracle node is registered
+        require(oracleNodes[oracle].node != address(0), "Oracle node not registered");
+
+        // Update the oracle node's last update timestamp
+        oracleNodes[oracle].lastUpdate = block.timestamp;
+
+        // Emit the PriceUpdate event
+        emit PriceUpdate(oracle, price);
+
+        // Calculate the reward for the oracle node
+        uint256 reward = calculateReward(oracle);
+
+        // Update the oracle node's reputation
+        oracleNodes[oracle].reputation += reward;
+
+        // Emit the Reward event
+        emit Reward(oracle, reward);
+    }
+
+    // Function to calculate the reward for an oracle node
+    function calculateReward(address oracle) internal returns (uint256) {
+        // Calculate the reward based on the oracle node's reputation and last update timestamp
+        uint256 reward = oracleNodes[oracle].reputation * (block.timestamp - oracleNodes[oracle].lastUpdate);
+        return reward;
+    }
+
+    // Function to get the reward for an oracle node
+    function getReward(address oracle) public view returns (uint256) {
+        return oracleRewards[oracle];
+    }
+
+    // Function to claim rewards
+    function claimRewards(address oracle) public {
+        // Check if the oracle node has rewards to claim
+        require(oracleRewards[oracle] > 0, "No rewards to claim");
+
+        // Transfer the rewards to the oracle node
+        SafeERC20.transfer(piStablecoin, oracle, oracleRewards[oracle]);
+
+        // Reset the oracle node's rewards
+        oracleRewards[oracle] = 0;
+    }
+}