Split out nodes and networks into their own reducers

common/actions/config/actionCreators.ts

@@ -32,7 +32,7 @@ export function changeNode(
 ): interfaces.ChangeNodeAction {
   return {
     type: TypeKeys.CONFIG_NODE_CHANGE,
-    payload: { nodeSelection, node, network }
+    payload: { nodeSelection, nodeName, networkName }
   };
 }
 

common/actions/config/actionTypes.ts

@@ -1,5 +1,6 @@
 import { TypeKeys } from './constants';
-import { NodeConfig, CustomNodeConfig, NetworkConfig, CustomNetworkConfig } from 'config';
+import { CustomNodeConfig } from 'config';
+import { CustomNetworkConfig } from 'reducers/config/networks/typings';
 
 /*** Toggle Offline ***/
 export interface ToggleOfflineAction {
@@ -21,9 +22,8 @@ export interface ChangeNodeAction {
   type: TypeKeys.CONFIG_NODE_CHANGE;
   // FIXME $keyof?
   payload: {
-    nodeSelection: string;
-    node: NodeConfig;
-    network: NetworkConfig;
+    nodeName: string;
+    networkName: string;
   };
 }
 
@@ -41,25 +41,25 @@ export interface ChangeNodeIntentAction {
 /*** Add Custom Node ***/
 export interface AddCustomNodeAction {
   type: TypeKeys.CONFIG_ADD_CUSTOM_NODE;
-  payload: CustomNodeConfig;
+  payload: { id: string; config: CustomNodeConfig };
 }
 
 /*** Remove Custom Node ***/
 export interface RemoveCustomNodeAction {
   type: TypeKeys.CONFIG_REMOVE_CUSTOM_NODE;
-  payload: CustomNodeConfig;
+  payload: { id: string };
 }
 
 /*** Add Custom Network ***/
 export interface AddCustomNetworkAction {
   type: TypeKeys.CONFIG_ADD_CUSTOM_NETWORK;
-  payload: CustomNetworkConfig;
+  payload: { id: string; config: CustomNetworkConfig };
 }
 
 /*** Remove Custom Network ***/
 export interface RemoveCustomNetworkAction {
   type: TypeKeys.CONFIG_REMOVE_CUSTOM_NETWORK;
-  payload: CustomNetworkConfig;
+  payload: { id: string };
 }
 
 /*** Set Latest Block ***/
@@ -73,17 +73,18 @@ export interface Web3UnsetNodeAction {
   type: TypeKeys.CONFIG_NODE_WEB3_UNSET;
 }
 
-/*** Union Type ***/
-export type ConfigAction =
-  | ChangeNodeAction
+export type CustomNetworkAction = AddCustomNetworkAction | RemoveCustomNetworkAction;
+
+export type CustomNodeAction = AddCustomNodeAction | RemoveCustomNodeAction;
+
+export type NodeAction = ChangeNodeAction | ChangeNodeIntentAction | Web3UnsetNodeAction;
+
+export type MetaAction =
   | ChangeLanguageAction
   | ToggleOfflineAction
   | ToggleAutoGasLimitAction
   | PollOfflineStatus
-  | ChangeNodeIntentAction
-  | AddCustomNodeAction
-  | RemoveCustomNodeAction
-  | AddCustomNetworkAction
-  | RemoveCustomNetworkAction
-  | SetLatestBlockAction
-  | Web3UnsetNodeAction;
+  | SetLatestBlockAction;
+
+/*** Union Type ***/
+export type ConfigAction = CustomNetworkAction | CustomNodeAction | NodeAction | MetaAction;

common/config/networks.ts

@@ -1,176 +0,0 @@
-import { EtherscanNode, InfuraNode, RPCNode, Web3Node } from 'libs/nodes';
-import { networkIdToName } from 'libs/values';
-
-export interface CustomNodeConfig {
-  name: string;
-  url: string;
-  port: number;
-  network: string;
-  auth?: {
-    username: string;
-    password: string;
-  };
-}
-
-export interface NodeConfig {
-  network: NetworkKeys;
-  lib: RPCNode | Web3Node;
-  service: string;
-  estimateGas?: boolean;
-  hidden?: boolean;
-}
-
-enum NodeName {
-  ETH_MEW = 'eth_mew',
-  ETH_MYCRYPTO = 'eth_mycrypto',
-  ETH_ETHSCAN = 'eth_ethscan',
-  ETH_INFURA = 'eth_infura',
-  ROP_MEW = 'rop_mew',
-  ROP_INFURA = 'rop_infura',
-  KOV_ETHSCAN = 'kov_ethscan',
-  RIN_ETHSCAN = 'rin_ethscan',
-  RIN_INFURA = 'rin_infura',
-  ETC_EPOOL = 'etc_epool',
-  UBQ = 'ubq',
-  EXP_TECH = 'exp_tech'
-}
-
-type NonWeb3NodeConfigs = { [key in NodeName]: NodeConfig };
-
-interface Web3NodeConfig {
-  web3?: NodeConfig;
-}
-
-type NodeConfigs = NonWeb3NodeConfigs & Web3NodeConfig;
-
-export const NODES: NodeConfigs = {
-  eth_mew: {
-    network: 'ETH',
-    lib: new RPCNode('https://api.myetherapi.com/eth'),
-    service: 'MyEtherWallet',
-    estimateGas: true
-  },
-  eth_mycrypto: {
-    network: 'ETH',
-    lib: new RPCNode('https://api.mycryptoapi.com/eth'),
-    service: 'MyCrypto',
-    estimateGas: true
-  },
-  eth_ethscan: {
-    network: 'ETH',
-    service: 'Etherscan.io',
-    lib: new EtherscanNode('https://api.etherscan.io/api'),
-    estimateGas: false
-  },
-  eth_infura: {
-    network: 'ETH',
-    service: 'infura.io',
-    lib: new InfuraNode('https://mainnet.infura.io/mew'),
-    estimateGas: false
-  },
-  rop_mew: {
-    network: 'Ropsten',
-    service: 'MyEtherWallet',
-    lib: new RPCNode('https://api.myetherapi.com/rop'),
-    estimateGas: false
-  },
-  rop_infura: {
-    network: 'Ropsten',
-    service: 'infura.io',
-    lib: new InfuraNode('https://ropsten.infura.io/mew'),
-    estimateGas: false
-  },
-  kov_ethscan: {
-    network: 'Kovan',
-    service: 'Etherscan.io',
-    lib: new EtherscanNode('https://kovan.etherscan.io/api'),
-    estimateGas: false
-  },
-  rin_ethscan: {
-    network: 'Rinkeby',
-    service: 'Etherscan.io',
-    lib: new EtherscanNode('https://rinkeby.etherscan.io/api'),
-    estimateGas: false
-  },
-  rin_infura: {
-    network: 'Rinkeby',
-    service: 'infura.io',
-    lib: new InfuraNode('https://rinkeby.infura.io/mew'),
-    estimateGas: false
-  },
-  etc_epool: {
-    network: 'ETC',
-    service: 'Epool.io',
-    lib: new RPCNode('https://mewapi.epool.io'),
-    estimateGas: false
-  },
-  ubq: {
-    network: 'UBQ',
-    service: 'ubiqscan.io',
-    lib: new RPCNode('https://pyrus2.ubiqscan.io'),
-    estimateGas: true
-  },
-  exp_tech: {
-    network: 'EXP',
-    service: 'Expanse.tech',
-    lib: new RPCNode('https://node.expanse.tech/'),
-    estimateGas: true
-  }
-};
-
-interface Web3NodeInfo {
-  networkId: string;
-  lib: Web3Node;
-}
-
-export async function setupWeb3Node(): Promise<Web3NodeInfo> {
-  const { web3 } = window as any;
-
-  if (!web3 || !web3.currentProvider || !web3.currentProvider.sendAsync) {
-    throw new Error(
-      'Web3 not found. Please check that MetaMask is installed, or that MyEtherWallet is open in Mist.'
-    );
-  }
-
-  const lib = new Web3Node();
-  const networkId = await lib.getNetVersion();
-  const accounts = await lib.getAccounts();
-
-  if (!accounts.length) {
-    throw new Error('No accounts found in MetaMask / Mist.');
-  }
-
-  if (networkId === 'loading') {
-    throw new Error('MetaMask / Mist is still loading. Please refresh the page and try again.');
-  }
-
-  return { networkId, lib };
-}
-
-export async function isWeb3NodeAvailable(): Promise<boolean> {
-  try {
-    await setupWeb3Node();
-    return true;
-  } catch (e) {
-    return false;
-  }
-}
-
-export const Web3Service = 'MetaMask / Mist';
-
-export interface NodeConfigOverride extends NodeConfig {
-  network: any;
-}
-
-export async function initWeb3Node(): Promise<void> {
-  const { networkId, lib } = await setupWeb3Node();
-  const web3: NodeConfigOverride = {
-    network: networkIdToName(networkId),
-    service: Web3Service,
-    lib,
-    estimateGas: false,
-    hidden: true
-  };
-
-  NODES.web3 = web3;
-}

common/reducers/config.ts

@@ -1,36 +1,13 @@
-import {
-  ChangeLanguageAction,
-  ChangeNodeAction,
-  AddCustomNodeAction,
-  RemoveCustomNodeAction,
-  AddCustomNetworkAction,
-  RemoveCustomNetworkAction,
-  SetLatestBlockAction,
-  ConfigAction
-} from 'actions/config';
+import { ChangeLanguageAction, SetLatestBlockAction, ConfigAction } from 'actions/config';
 import { TypeKeys } from 'actions/config/constants';
-import {
-  NODES,
-  NETWORKS,
-  NodeConfig,
-  CustomNodeConfig,
-  NetworkConfig,
-  CustomNetworkConfig
-} from 'config';
-import { makeCustomNodeId } from 'utils/node';
-import { makeCustomNetworkId } from 'utils/network';
 
 export interface State {
   // FIXME
   languageSelection: string;
   nodeSelection: string;
-  node: NodeConfig;
-  network: NetworkConfig;
   isChangingNode: boolean;
   offline: boolean;
   autoGasLimit: boolean;
-  customNodes: CustomNodeConfig[];
-  customNetworks: CustomNetworkConfig[];
   latestBlock: string;
 }
 
@@ -55,23 +32,6 @@ function changeLanguage(state: State, action: ChangeLanguageAction): State {
   };
 }
 
-function changeNode(state: State, action: ChangeNodeAction): State {
-  return {
-    ...state,
-    nodeSelection: action.payload.nodeSelection,
-    node: action.payload.node,
-    network: action.payload.network,
-    isChangingNode: false
-  };
-}
-
-function changeNodeIntent(state: State): State {
-  return {
-    ...state,
-    isChangingNode: true
-  };
-}
-
 function toggleOffline(state: State): State {
   return {
     ...state,
@@ -86,44 +46,6 @@ function toggleAutoGasLimitEstimation(state: State): State {
   };
 }
 
-function addCustomNode(state: State, action: AddCustomNodeAction): State {
-  const newId = makeCustomNodeId(action.payload);
-  return {
-    ...state,
-    customNodes: [
-      ...state.customNodes.filter(node => makeCustomNodeId(node) !== newId),
-      action.payload
-    ]
-  };
-}
-
-function removeCustomNode(state: State, action: RemoveCustomNodeAction): State {
-  const id = makeCustomNodeId(action.payload);
-  return {
-    ...state,
-    customNodes: state.customNodes.filter(cn => cn !== action.payload),
-    nodeSelection: id === state.nodeSelection ? defaultNode : state.nodeSelection
-  };
-}
-
-function addCustomNetwork(state: State, action: AddCustomNetworkAction): State {
-  const newId = makeCustomNetworkId(action.payload);
-  return {
-    ...state,
-    customNetworks: [
-      ...state.customNetworks.filter(node => makeCustomNetworkId(node) !== newId),
-      action.payload
-    ]
-  };
-}
-
-function removeCustomNetwork(state: State, action: RemoveCustomNetworkAction): State {
-  return {
-    ...state,
-    customNetworks: state.customNetworks.filter(cn => cn !== action.payload)
-  };
-}
-
 function setLatestBlock(state: State, action: SetLatestBlockAction): State {
   return {
     ...state,
@@ -135,22 +57,12 @@ export function config(state: State = INITIAL_STATE, action: ConfigAction): Stat
   switch (action.type) {
     case TypeKeys.CONFIG_LANGUAGE_CHANGE:
       return changeLanguage(state, action);
-    case TypeKeys.CONFIG_NODE_CHANGE:
-      return changeNode(state, action);
-    case TypeKeys.CONFIG_NODE_CHANGE_INTENT:
-      return changeNodeIntent(state);
+
     case TypeKeys.CONFIG_TOGGLE_OFFLINE:
       return toggleOffline(state);
     case TypeKeys.CONFIG_TOGGLE_AUTO_GAS_LIMIT:
       return toggleAutoGasLimitEstimation(state);
-    case TypeKeys.CONFIG_ADD_CUSTOM_NODE:
-      return addCustomNode(state, action);
-    case TypeKeys.CONFIG_REMOVE_CUSTOM_NODE:
-      return removeCustomNode(state, action);
-    case TypeKeys.CONFIG_ADD_CUSTOM_NETWORK:
-      return addCustomNetwork(state, action);
-    case TypeKeys.CONFIG_REMOVE_CUSTOM_NETWORK:
-      return removeCustomNetwork(state, action);
+
     case TypeKeys.CONFIG_SET_LATEST_BLOCK:
       return setLatestBlock(state, action);
     default:

common/reducers/config/networks/customNetworks.ts

@@ -0,0 +1,33 @@
+import {
+  AddCustomNetworkAction,
+  RemoveCustomNetworkAction,
+  CustomNetworkAction,
+  TypeKeys
+} from 'actions/config';
+import { CustomNetworkConfig } from 'reducers/config/networks/typings';
+
+export interface State {
+  [customNetworkId: string]: CustomNetworkConfig;
+}
+
+const addCustomNetwork = (state: State, { payload }: AddCustomNetworkAction): State => ({
+  ...state,
+  [payload.id]: payload.config
+});
+
+function removeCustomNetwork(state: State, { payload }: RemoveCustomNetworkAction): State {
+  const stateCopy = { ...state };
+  Reflect.deleteProperty(stateCopy, payload.id);
+  return stateCopy;
+}
+
+export const customNetworks = (state: State = {}, action: CustomNetworkAction) => {
+  switch (action.type) {
+    case TypeKeys.CONFIG_ADD_CUSTOM_NETWORK:
+      return addCustomNetwork(state, action);
+    case TypeKeys.CONFIG_REMOVE_CUSTOM_NETWORK:
+      return removeCustomNetwork(state, action);
+    default:
+      return state;
+  }
+};

common/reducers/config/networks/defaultNetworks.ts

@@ -12,13 +12,15 @@ import {
 import {
   NetworkConfig,
   BlockExplorerConfig,
-  DefaultNetworkKeys
+  DefaultNetworkNames
 } from 'reducers/config/networks/typings';
+import { ConfigAction } from 'actions/config';
 
-export type State = { [key in DefaultNetworkKeys]: NetworkConfig };
+export type State = { [key in DefaultNetworkNames]: NetworkConfig };
 
 // Must be a website that follows the ethplorer convention of /tx/[hash] and
 // address/[address] to generate the correct functions.
+// TODO: put this in utils / libs
 function makeExplorer(origin: string): BlockExplorerConfig {
   return {
     origin,
@@ -27,7 +29,7 @@ function makeExplorer(origin: string): BlockExplorerConfig {
   };
 }
 
-const INITIAL_STATE = {
+const INITIAL_STATE: State = {
   ETH: {
     name: 'ETH',
     unit: 'ETH',
@@ -134,3 +136,10 @@ const INITIAL_STATE = {
     }
   }
 };
+
+export const defaultNetworks = (state: State = INITIAL_STATE, action: ConfigAction) => {
+  switch (action.type) {
+    default:
+      return state;
+  }
+};

common/reducers/config/networks/index.ts

@@ -0,0 +1,16 @@
+import { customNetworks, State as CustomNetworksState } from './customNetworks';
+import { defaultNetworks, State as DefaultNetworksState } from './defaultNetworks';
+import { selectedNetwork, State as SelectedNetworkState } from './selectedNetwork';
+import { combineReducers } from 'redux';
+
+export interface State {
+  customNetworks: CustomNetworksState;
+  defaultNetworks: DefaultNetworksState;
+  selectedNetwork: SelectedNetworkState;
+}
+
+export const networks = combineReducers<State>({
+  customNetworks,
+  defaultNetworks,
+  selectedNetwork
+});

common/reducers/config/networks/selectedNetwork.ts

@@ -0,0 +1,22 @@
+import { NodeAction, TypeKeys, ChangeNodeAction } from 'actions/config';
+import { DefaultNetworkNames } from 'reducers/config/networks/typings';
+import { INITIAL_STATE as INITIAL_NODE_STATE } from '../nodes/selectedNode'; // could probably consolidate this in the index file of 'nodes' to make it easier to import
+import { INITIAL_STATE as INITIAL_DEFAULT_NODE_STATE } from '../nodes/defaultNodes';
+import { NonWeb3NodeConfigs } from 'reducers/config/nodes/typings';
+
+const initalNode =
+  INITIAL_DEFAULT_NODE_STATE[INITIAL_NODE_STATE.nodeName as keyof NonWeb3NodeConfigs];
+
+export type State = string | DefaultNetworkNames;
+const INITIAL_STATE: State = initalNode.networkName;
+
+const handleNodeChange = (_: State, { payload }: ChangeNodeAction) => payload.networkName;
+
+export const selectedNetwork = (state: State = INITIAL_STATE, action: NodeAction) => {
+  switch (action.type) {
+    case TypeKeys.CONFIG_NODE_CHANGE:
+      return handleNodeChange(state, action);
+    default:
+      break;
+  }
+};

common/reducers/config/networks/typings.ts

@@ -1,6 +1,6 @@
 import { DPath } from 'config/dpaths';
 
-export type DefaultNetworkKeys = 'ETH' | 'Ropsten' | 'Kovan' | 'Rinkeby' | 'ETC' | 'UBQ' | 'EXP';
+export type DefaultNetworkNames = 'ETH' | 'Ropsten' | 'Kovan' | 'Rinkeby' | 'ETC' | 'UBQ' | 'EXP';
 
 export interface BlockExplorerConfig {
   origin: string;
@@ -16,7 +16,7 @@ export interface Token {
 }
 
 export interface NetworkContract {
-  name: DefaultNetworkKeys;
+  name: DefaultNetworkNames;
   address?: string;
   abi: string;
 }
@@ -29,7 +29,7 @@ export interface DPathFormats {
 
 export interface NetworkConfig {
   // TODO really try not to allow strings due to custom networks
-  name: DefaultNetworkKeys;
+  name: DefaultNetworkNames;
   unit: string;
   color?: string;
   blockExplorer?: BlockExplorerConfig;

common/reducers/config/nodes/customNodes.ts

@@ -0,0 +1,33 @@
+import { CustomNodeConfig } from 'reducers/config/nodes/typings';
+import {
+  TypeKeys,
+  CustomNodeAction,
+  AddCustomNodeAction,
+  RemoveCustomNodeAction
+} from 'actions/config';
+
+export interface State {
+  [customNodeId: string]: CustomNodeConfig;
+}
+
+const addCustomNode = (state: State, { payload }: AddCustomNodeAction): State => ({
+  ...state,
+  [payload.id]: payload.config
+});
+
+function removeCustomNode(state: State, { payload }: RemoveCustomNodeAction): State {
+  const stateCopy = { ...state };
+  Reflect.deleteProperty(stateCopy, payload.id);
+  return stateCopy;
+}
+
+export const customNodes = (state: State = {}, action: CustomNodeAction): State => {
+  switch (action.type) {
+    case TypeKeys.CONFIG_ADD_CUSTOM_NODE:
+      return addCustomNode(state, action);
+    case TypeKeys.CONFIG_REMOVE_CUSTOM_NODE:
+      return removeCustomNode(state, action);
+    default:
+      return state;
+  }
+};

common/reducers/config/nodes/defaultNodes.ts

@@ -0,0 +1,87 @@
+import { NonWeb3NodeConfigs, Web3NodeConfig } from 'reducers/config/nodes/typings';
+import { EtherscanNode, InfuraNode, RPCNode } from 'libs/nodes';
+import { ConfigAction } from 'actions/config';
+
+export type State = NonWeb3NodeConfigs & Web3NodeConfig;
+
+export const INITIAL_STATE: State = {
+  eth_mew: {
+    networkName: 'ETH',
+    lib: new RPCNode('https://api.myetherapi.com/eth'),
+    service: 'MyEtherWallet',
+    estimateGas: true
+  },
+  eth_mycrypto: {
+    networkName: 'ETH',
+    lib: new RPCNode('https://api.mycryptoapi.com/eth'),
+    service: 'MyCrypto',
+    estimateGas: true
+  },
+  eth_ethscan: {
+    networkName: 'ETH',
+    service: 'Etherscan.io',
+    lib: new EtherscanNode('https://api.etherscan.io/api'),
+    estimateGas: false
+  },
+  eth_infura: {
+    networkName: 'ETH',
+    service: 'infura.io',
+    lib: new InfuraNode('https://mainnet.infura.io/mew'),
+    estimateGas: false
+  },
+  rop_mew: {
+    networkName: 'Ropsten',
+    service: 'MyEtherWallet',
+    lib: new RPCNode('https://api.myetherapi.com/rop'),
+    estimateGas: false
+  },
+  rop_infura: {
+    networkName: 'Ropsten',
+    service: 'infura.io',
+    lib: new InfuraNode('https://ropsten.infura.io/mew'),
+    estimateGas: false
+  },
+  kov_ethscan: {
+    networkName: 'Kovan',
+    service: 'Etherscan.io',
+    lib: new EtherscanNode('https://kovan.etherscan.io/api'),
+    estimateGas: false
+  },
+  rin_ethscan: {
+    networkName: 'Rinkeby',
+    service: 'Etherscan.io',
+    lib: new EtherscanNode('https://rinkeby.etherscan.io/api'),
+    estimateGas: false
+  },
+  rin_infura: {
+    networkName: 'Rinkeby',
+    service: 'infura.io',
+    lib: new InfuraNode('https://rinkeby.infura.io/mew'),
+    estimateGas: false
+  },
+  etc_epool: {
+    networkName: 'ETC',
+    service: 'Epool.io',
+    lib: new RPCNode('https://mewapi.epool.io'),
+    estimateGas: false
+  },
+  ubq: {
+    networkName: 'UBQ',
+    service: 'ubiqscan.io',
+    lib: new RPCNode('https://pyrus2.ubiqscan.io'),
+    estimateGas: true
+  },
+  exp_tech: {
+    networkName: 'EXP',
+    service: 'Expanse.tech',
+    lib: new RPCNode('https://node.expanse.tech/'),
+    estimateGas: true
+  }
+};
+
+export const defaultNodes = (state: State = INITIAL_STATE, action: ConfigAction) => {
+  switch (action.type) {
+    default:
+      return state;
+  }
+};

common/reducers/config/nodes/index.ts

@@ -0,0 +1,12 @@
+import { customNodes, State as CustomNodeState } from './customNodes';
+import { defaultNodes, State as DefaultNodeState } from './defaultNodes';
+import { selectedNode, State as SelectedNodeState } from './selectedNode';
+import { combineReducers } from 'redux';
+
+export interface State {
+  customNodes: CustomNodeState;
+  defaultNodes: DefaultNodeState;
+  selectedNode: SelectedNodeState;
+}
+
+export const nodes = combineReducers<State>({ customNodes, defaultNodes, selectedNode });

common/reducers/config/nodes/selectedNode.ts

@@ -0,0 +1,39 @@
+import { ChangeNodeAction, ChangeNodeIntentAction, NodeAction, TypeKeys } from 'actions/config';
+
+interface NodeLoaded {
+  pending: false;
+  nodeName: string;
+}
+
+interface NodeChangePending {
+  pending: true;
+  nodeName: null;
+}
+
+export type State = NodeLoaded | NodeChangePending;
+
+export const INITIAL_STATE: NodeLoaded = {
+  nodeName: 'eth_mew',
+  pending: false
+};
+
+const changeNode = (_: State, { payload }: ChangeNodeAction): State => ({
+  nodeName: payload.networkName,
+  pending: false
+});
+
+const changeNodeIntent = (_: State, _2: ChangeNodeIntentAction): State => ({
+  nodeName: null,
+  pending: true
+});
+
+export const selectedNode = (state: State = INITIAL_STATE, action: NodeAction) => {
+  switch (action.type) {
+    case TypeKeys.CONFIG_NODE_CHANGE:
+      return changeNode(state, action);
+    case TypeKeys.CONFIG_NODE_CHANGE_INTENT:
+      return changeNodeIntent(state, action);
+    default:
+      return state;
+  }
+};

common/reducers/config/nodes/typings.ts

@@ -0,0 +1,103 @@
+import { RPCNode, Web3Node } from 'libs/nodes';
+import { networkIdToName } from 'libs/values';
+import { DefaultNetworkNames } from 'reducers/config/networks/typings';
+
+export interface CustomNodeConfig {
+  name: string;
+  url: string;
+  port: number;
+  network: string;
+  auth?: {
+    username: string;
+    password: string;
+  };
+}
+
+export interface DefaultNodeConfig {
+  networkName: DefaultNetworkNames;
+  lib: RPCNode | Web3Node;
+  service: string;
+  estimateGas?: boolean;
+  hidden?: boolean;
+}
+
+export enum DefaultNodeName {
+  ETH_MEW = 'eth_mew',
+  ETH_MYCRYPTO = 'eth_mycrypto',
+  ETH_ETHSCAN = 'eth_ethscan',
+  ETH_INFURA = 'eth_infura',
+  ROP_MEW = 'rop_mew',
+  ROP_INFURA = 'rop_infura',
+  KOV_ETHSCAN = 'kov_ethscan',
+  RIN_ETHSCAN = 'rin_ethscan',
+  RIN_INFURA = 'rin_infura',
+  ETC_EPOOL = 'etc_epool',
+  UBQ = 'ubq',
+  EXP_TECH = 'exp_tech'
+}
+
+export type NonWeb3NodeConfigs = { [key in DefaultNodeName]: DefaultNodeConfig };
+
+export interface Web3NodeConfig {
+  web3?: DefaultNodeConfig;
+}
+
+/**
+ * TODO: Put this in a saga that runs on app mount
+ */
+interface Web3NodeInfo {
+  networkId: string;
+  lib: Web3Node;
+}
+
+export async function setupWeb3Node(): Promise<Web3NodeInfo> {
+  const { web3 } = window as any;
+
+  if (!web3 || !web3.currentProvider || !web3.currentProvider.sendAsync) {
+    throw new Error(
+      'Web3 not found. Please check that MetaMask is installed, or that MyEtherWallet is open in Mist.'
+    );
+  }
+
+  const lib = new Web3Node();
+  const networkId = await lib.getNetVersion();
+  const accounts = await lib.getAccounts();
+
+  if (!accounts.length) {
+    throw new Error('No accounts found in MetaMask / Mist.');
+  }
+
+  if (networkId === 'loading') {
+    throw new Error('MetaMask / Mist is still loading. Please refresh the page and try again.');
+  }
+
+  return { networkId, lib };
+}
+
+export async function isWeb3NodeAvailable(): Promise<boolean> {
+  try {
+    await setupWeb3Node();
+    return true;
+  } catch (e) {
+    return false;
+  }
+}
+
+export const Web3Service = 'MetaMask / Mist';
+
+export interface NodeConfigOverride extends DefaultNodeConfig {
+  networkName: any;
+}
+
+export async function initWeb3Node(): Promise<void> {
+  const { networkId, lib } = await setupWeb3Node();
+  const web3: NodeConfigOverride = {
+    network: networkIdToName(networkId),
+    service: Web3Service,
+    lib,
+    estimateGas: false,
+    hidden: true
+  };
+
+  NODES.web3 = web3;
+}