requestSwitchToChain method

@override Future<void> requestSwitchToChain(ReownAppKitModalNetworkInfo newChain)

Implementation

@override
Future<void> requestSwitchToChain(
  ReownAppKitModalNetworkInfo newChain,
) async {
  final namespace = ReownAppKitModalNetworks.getNamespaceForChainId(
    newChain.chainId,
  );
  if (namespace != NetworkUtils.eip155) {
    // If chain is not EVM then there's no need to request a switch since it doesn't exist such method for non-EVM chains
    // Therefor at this point the selected non-EVM chain is either already approved, invalidating the need of a switch call, or not approved, failing with the following error.
    throw ReownAppKitModalException('Chain namespace is not supported');
  }
  if (_currentSession?.sessionService.isMagic == true) {
    await selectChain(newChain);
    return;
  }
  final currentCaip2Chain = ReownAppKitModalNetworks.getCaip2Chain(
    _currentSelectedChainId!,
  );
  final newCaip2Chain = ReownAppKitModalNetworks.getCaip2Chain(
    newChain.chainId,
  );
  _appKit.core.logger.i(
    '[$runtimeType] requesting switch to chain $newCaip2Chain',
  );
  try {
    await request(
      topic: _currentSession?.topic ?? '',
      chainId: currentCaip2Chain,
      switchToChainId: newCaip2Chain,
      request: SessionRequestParams(
        method: MethodsConstants.walletSwitchEthChain,
        params: [
          {'chainId': newChain.chainHexId}
        ],
      ),
    );
    _currentSelectedChainId = newChain.chainId;
    await _setSesionAndChainData(_currentSession!);
    return;
  } catch (e) {
    // if request errors due to user rejection then set the previous chain
    if (_isUserRejectedError(e)) {
      // fallback to current chain if rejected by user
      await _setLocalEthChain(_currentSelectedChainId!);
      throw JsonRpcError(code: 5002, message: 'User rejected methods.');
    } else {
      try {
        // Otherwise it meas chain has to be added.
        return await requestAddChain(newChain);
      } on JsonRpcError catch (e) {
        _appKit.core.logger.e(
          '[$runtimeType] Switch to chain error: ${e.toJson()}',
        );
        rethrow;
      } on ReownAppKitModalException catch (e) {
        _appKit.core.logger.e(
          '[$runtimeType] Switch to chain error: ${e.message}',
          stackTrace: e.stackTrace,
        );
        rethrow;
      } catch (e, s) {
        _appKit.core.logger.e(
          '[$runtimeType] Switch to chain error: ${e.toString()}',
          stackTrace: s,
        );
        rethrow;
      }
    }
  }
}