Create PiCoinListing.sol

blockchain_integration/pi_network/features/pi-coin-listing-and-liquidity/PiCoinListing.sol

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+pragma solidity ^0.8.0;
+
+import "./ExchangeManager.sol";
+import "./LiquidityProvider.sol";
+
+contract PiCoinListing {
+    using ExchangeManager for address;
+    using LiquidityProvider for address;
+
+    // Mapping of exchanges
+    mapping (address => Exchange) public exchanges;
+
+    // Struct to represent an exchange
+    struct Exchange {
+        address exchangeAddress;
+        string exchangeName;
+        bool listed;
+    }
+
+    // Event emitted when Pi Coin is listed on an exchange
+    event PiCoinListed(address indexed exchangeAddress, string exchangeName);
+
+    // Function to list Pi Coin on an exchange
+    function listPiCoinOnExchange(address _exchangeAddress, string memory _exchangeName) public {
+        Exchange storage exchange = exchanges[_exchangeAddress];
+        exchange.exchangeAddress = _exchangeAddress;
+        exchange.exchangeName = _exchangeName;
+        exchange.listed = true;
+        emit PiCoinListed(_exchangeAddress, _exchangeName);
+    }
+
+    // Function to get the list of exchanges where Pi Coin is listed
+    function getExchanges() public view returns (Exchange[] memory) {
+        Exchange[] memory exchangeList = new Exchange[](exchanges.length);
+        for (address exchangeAddress in exchanges) {
+            exchangeList.push(exchanges[exchangeAddress]);
+        }
+        return exchangeList;
+    }
+}