Create cross_chain_bridge.sol

blockchain_integration/pi_network/smart_contracts/cross_chain/cross_chain_bridge.sol

@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+contract CrossChainBridge {
+    event TransferInitiated(address indexed sender, uint256 amount, string targetChain, address targetAddress);
+    event TransferCompleted(address indexed receiver, uint256 amount, string sourceChain);
+
+    struct Transfer {
+        address sender;
+        uint256 amount;
+        string targetChain;
+        address targetAddress;
+        bool completed;
+    }
+
+    mapping(bytes32 => Transfer) public transfers;
+
+    // Initiate a cross-chain transfer
+    function initiateTransfer(uint256 _amount, string memory _targetChain, address _targetAddress) public {
+        bytes32 transferId = keccak256(abi.encodePacked(msg.sender, _amount, _targetChain, _targetAddress, block.timestamp));
+        require(transfers[transferId].sender == address(0), "Transfer already initiated.");
+
+        transfers[transferId] = Transfer(msg.sender, _amount, _targetChain, _targetAddress, false);
+        emit TransferInitiated(msg.sender, _amount, _targetChain, _targetAddress);
+    }
+
+    // Complete a cross-chain transfer
+    function completeTransfer(bytes32 _transferId) public {
+        Transfer storage transfer = transfers[_transferId];
+        require(transfer.sender != address(0), "Transfer does not exist.");
+        require(!transfer.completed, "Transfer already completed.");
+
+        transfer.completed = true;
+        payable(transfer.targetAddress).transfer(transfer.amount);
+        emit TransferCompleted(transfer.targetAddress, transfer.amount, "Ethereum");
+    }
+
+    // Get transfer details
+    function getTransferDetails(bytes32 _transferId) public view returns (address, uint256, string memory, address, bool) {
+        Transfer storage transfer = transfers[_transferId];
+        return (transfer.sender, transfer.amount, transfer.targetChain, transfer.targetAddress, transfer.completed);
+    }
+
+    // Fallback function to receive Ether
+    receive() external payable {}
+}