getXmrMarketPrices method

Future<List<MarketPriceInfo>?> getXmrMarketPrices()

Retrieves the current market prices for XMR (Monero) from the Haveno gRPC service.

This method sends a MarketPricesRequest to the Haveno gRPC server and expects a MarketPricesReply containing the list of MarketPriceInfo data. Each MarketPriceInfo contains pricing information about XMR in various markets.

If the Haveno client is not connected to the server, a DaemonNotConnectedException is thrown, indicating that the gRPC connection is required to fetch the data.

Example:

try {
  final prices = await priceClient.getXmrMarketPrices();
  if (prices != null) {
    for (final price in prices) {
      print('Market: ${price.market}, Price: ${price.price}');
    }
  }
} catch (e) {
  print('Error fetching prices: $e');
}

Returns:

• A Future that resolves to a List<MarketPriceInfo>? containing the current market prices for XMR, or null if an error occurs.

Throws:

• DaemonNotConnectedException if the client is not connected to the gRPC server.
• Catches GrpcError to handle gRPC-specific errors.

This method also leverages the GrpcErrorHandler mixin to provide custom error handling for gRPC failures such as network issues or invalid responses.

Implementation

Future<List<MarketPriceInfo>?> getXmrMarketPrices() async {
  // Ensure that the Haveno client is connected to the gRPC server.
  if (!havenoChannel.isConnected) {
    throw DaemonNotConnectedException();
  }

  // Variable to hold the gRPC response.
  MarketPricesReply getMarketPricesReply;

  try {
    // Make the gRPC call to retrieve market prices.
    getMarketPricesReply = await havenoChannel.priceClient
        !.getMarketPrices(MarketPricesRequest());

    // Return the list of market prices from the gRPC response.
    return getMarketPricesReply.marketPrice;
  } on GrpcError catch (e) {
    // Handle any gRPC errors using the GrpcErrorHandler mixin.
    handleGrpcError(e);
  }

  // Return null if an error occurred during the gRPC request.
  return null;
}