Create YieldFarmingProtocol.sol

blockchain_integration/pi_network/DeFi_Integration/YieldFarmingProtocol.sol

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+pragma solidity ^0.8.0;
+
+import {DeFiIntegration} from "./DeFiIntegration.sol";
+import {ERC20} from "./ERC20.sol";
+
+contract YieldFarmingProtocol {
+    // Mapping of yield farmers to their corresponding yield farming balances
+    mapping (address => uint256) public yieldFarmingBalances;
+
+    // Event emitted when a yield farmer deposits Pi Coin into the yield farming protocol
+    event YieldFarmerDeposit(address indexed yieldFarmer, uint256 amount);
+
+    // Event emitted when a yield farmer withdraws Pi Coin from the yield farming protocol
+    event YieldFarmerWithdrawal(address indexed yieldFarmer, uint256 amount);
+
+    // Event emitted when a yield farmer earns interest on their Pi Coin deposit
+    event YieldFarmerInterest(address indexed yieldFarmer, uint256 amount);
+
+    // Function to deposit Pi Coin into the yield farming protocol
+    function deposit(uint256 _amount) public {
+        // Transfer Pi Coin from yield farmer to yield farming protocol
+        DeFiIntegration.transferFrom(msg.sender, address(this), _amount);
+
+        // Update yield farmer's yield farming balance
+        yieldFarmingBalances[msg.sender] += _amount;
+
+        // Emit yield farmer deposit event
+        emit YieldFarmerDeposit(msg.sender, _amount);
+    }
+
+    // Function to withdraw Pi Coin from the yield farming protocol
+    function withdraw(uint256 _amount) public {
+        // Check if yield farmer has sufficient yield farming balance
+        require(yieldFarmingBalances[msg.sender] >= _amount, "Insufficient yield farming balance");
+
+        // Transfer Pi Coin from yield farming protocol to yield farmer
+        DeFiIntegration.transfer(msg.sender, _amount);
+
+        // Update yield farmer's yield farming balance
+        yieldFarmingBalances[msg.sender] -= _amount;
+
+        // Emit yield farmer withdrawal event
+        emit YieldFarmerWithdrawal(msg.sender, _amount);
+    }
+
+    // Function to earn interest on Pi Coin deposit
+    function earnInterest() public {
+        // Calculate interest earned by yield farmer
+        uint256 interest = yieldFarmingBalances[msg.sender] * 10 / 100;
+
+        // Update yield farmer's yield farming balance
+        yieldFarmingBalances[msg.sender] += interest;
+
+        // Emit yield farmer interest event
+        emit YieldFarmerInterest(msg.sender, interest);
+    }
+}