MyCrypto/common/selectors/config/networks.ts

import { AppState } from 'reducers';
import {
  CustomNetworkConfig,
  StaticNetworkConfig,
  StaticNetworkIds,
  NetworkContract
} from 'types/network';
const getConfig = (state: AppState) => state.config;

export const getNetworks = (state: AppState) => getConfig(state).networks;

export const getNetworkConfigById = (state: AppState, networkId: string) =>
  isStaticNetworkId(state, networkId)
    ? getStaticNetworkConfigs(state)[networkId]
    : getCustomNetworkConfigs(state)[networkId];

export const getStaticNetworkIds = (state: AppState): StaticNetworkIds[] =>
  Object.keys(getNetworks(state).staticNetworks) as StaticNetworkIds[];

export const isStaticNetworkId = (
  state: AppState,
  networkId: string
): networkId is StaticNetworkIds => Object.keys(getStaticNetworkConfigs(state)).includes(networkId);

export const getStaticNetworkConfig = (state: AppState): StaticNetworkConfig | undefined => {
  const { staticNetworks, selectedNetwork } = getNetworks(state);

  const defaultNetwork = isStaticNetworkId(state, selectedNetwork)
    ? staticNetworks[selectedNetwork]
    : undefined;
  return defaultNetwork;
};

export const getSelectedNetwork = (state: AppState) => getNetworks(state).selectedNetwork;

export const getCustomNetworkConfig = (state: AppState): CustomNetworkConfig | undefined => {
  const { customNetworks, selectedNetwork } = getNetworks(state);
  const customNetwork = customNetworks[selectedNetwork];
  return customNetwork;
};

export const getNetworkConfig = (state: AppState): StaticNetworkConfig | CustomNetworkConfig => {
  const config = getStaticNetworkConfig(state) || getCustomNetworkConfig(state);

  if (!config) {
    const { selectedNetwork } = getNetworks(state);
    throw Error(
      `No network config found for ${selectedNetwork} in either static or custom networks`
    );
  }
  return config;
};

export const getNetworkContracts = (state: AppState): NetworkContract[] | null => {
  const network = getStaticNetworkConfig(state);
  return network ? network.contracts : [];
};

export const getCustomNetworkConfigs = (state: AppState) => getNetworks(state).customNetworks;

export const getStaticNetworkConfigs = (state: AppState) => getNetworks(state).staticNetworks;