Add Warning Messages and various fixes (#100)

* Fix summary panel in Remove Liquidity

* Add warning message

* Add wrong network warning and env vars

package.json

@@ -34,7 +34,9 @@
   },
   "scripts": {
     "start": "react-scripts start",
+    "start:rinkeby": "REACT_APP_NETWORK_ID=4 REACT_APP_NETWORK='Rinkeby Test Network' react-scripts start",
     "build": "react-scripts build && cp build/index.html build/404.html",
+    "build:rinkeby": "REACT_APP_NETWORK_ID=4 REACT_APP_NETWORK='Rinkeby Test Network' react-scripts build && cp build/index.html build/404.html",
     "test": "react-scripts test --env=jsdom",
     "eject": "react-scripts eject",
     "deploy": "npm run build&&gh-pages -d build"

src/components/Header/index.js

-import React from 'react';
+import React, { Component } from 'react';
 import PropTypes from 'prop-types';
 import { connect } from 'react-redux';
 import classnames from 'classnames';
@@ -74,23 +74,38 @@ function isMobile() {
   return ua.getDevice().type === 'mobile';
 }
 
-function Header (props) {
-  return (
-    <div className="header">
-      <div
-        className={classnames('header__dialog', {
-          'header__dialog--disconnected': !props.isConnected && props.initialized,
-        })}
-      >
-        <div>No Ethereum wallet found</div>
+class BlockingWarning extends Component {
+  state = {
+    networkId: 0,
+  };
+
+  componentWillReceiveProps(nextProps) {
+    const { web3 } = nextProps;
+    const { networkId } = this.state;
+
+    if (!networkId) {
+      web3.eth.net.getId((_, networkId) => this.setState({ networkId }))
+    }
+  }
+
+  render () {
+    const {
+      isConnected,
+      initialized,
+    } = this.props;
+    const { networkId } = this.state;
+    let content = [];
+
+    if (!isConnected && initialized) {
+      content = [
+        <div>No Ethereum wallet found</div>,
         <div className="header__dialog__description">
           {
             isMobile()
               ? 'Please visit us from a web3-enabled mobile browser, such as Trust Wallet and Cipher Browser.'
               : 'Please visit us after installing Metamask on Chrome or Brave.'
-
           }
-        </div>
+        </div>,
         <div className="header__download">
           {
             isMobile()
@@ -107,8 +122,38 @@ function Header (props) {
                 ]
               )
           }
+        </div>,
+      ]
+    }
+
+    const correctNetworkId = process.env.REACT_APP_NETWORK_ID || 1;
+    const correctNetwork = process.env.REACT_APP_NETWORK || 'Main Ethereum Network';
+    const wrongNetwork = networkId != correctNetworkId;
+    if (wrongNetwork) {
+      content = [
+        <div>You are on the wrong network</div>,
+        <div className="header__dialog__description">
+          {`Please switch to ${correctNetwork}`}
+        </div>,
+      ];
+    }
+
+    return (
+      <div
+        className={classnames('header__dialog', {
+          'header__dialog--disconnected': (!isConnected || wrongNetwork) && initialized,
+        })}
+      >
+        {content}
       </div>
-      </div>
+    );
+  }
+}
+
+function Header (props) {
+  return (
+    <div className="header">
+      <BlockingWarning {...props} />
       <div
         className={classnames('header__top', {
           'header--inactive': !props.isConnected,
@@ -133,6 +178,7 @@ export default connect(
   state => ({
     currentAddress: state.web3connect.account,
     initialized: state.web3connect.initialized,
-    isConnected: !!state.web3connect.web3 && !!state.web3connect.account,
+    isConnected: !!state.web3connect.account && state.web3connect.networkId == process.env.REACT_APP_NETWORK_ID,
+    web3: state.web3connect.web3,
   }),
 )(Header);

src/components/NavigationTabs/beta-message.scss

+@import "../../variables";
+
+.beta-message {
+  padding: 1rem;
+  margin-bottom: 1rem;
+  border: 1px solid rgba($salmon-red, .4);
+  background-color: rgba($salmon-red, .1);
+  border-radius: 1rem;
+  font-size: .75rem;
+  line-height: 1rem;
+  text-align: center;
+}

src/components/NavigationTabs/index.js

@@ -3,6 +3,8 @@ import { withRouter } from 'react-router-dom';
 import PropTypes from 'prop-types';
 import {Tab, Tabs} from "../Tab";
 
+import './beta-message.scss';
+
 class NavigationTabs extends Component {
   static propTypes = {
     history: PropTypes.shape({
@@ -32,11 +34,16 @@ class NavigationTabs extends Component {
 
   render() {
     return (
+      <div>
         <Tabs className={this.props.className}>
           { this.renderTab('Swap', '/swap', /swap/) }
           { this.renderTab('Send', '/send', /send/) }
           { this.renderTab('Pool', '/add-liquidity', /add-liquidity|remove-liquidity|create-exchange/) }
         </Tabs>
+        <div className="beta-message">
+          🦄 Uniswap is an experimental project. Use at your own risk 💀
+        </div>
+      </div>
     );
   }
 }

src/ducks/addresses.js

@@ -104,6 +104,7 @@ export const setAddresses = networkId => {
     // Rinkeby
     case 4:
     case '4':
+    default:
       return {
         type: SET_ADDRESSES,
         payload: RINKEBY,

src/ducks/web3connect.js

@@ -15,9 +15,11 @@ export const UPDATE_TOKEN_BALANCE = 'web3connect/updateTokenBalance';
 export const WATCH_APPROVALS = 'web3connect/watchApprovals';
 export const UPDATE_APPROVALS = 'web3connect/updateApprovals';
 export const ADD_CONTRACT = 'web3connect/addContract';
+export const UPDATE_NETWORK_ID = 'web3connect/updateNetworkId';
 
 const initialState = {
   web3: null,
+  networkId: 0,
   initialized: false,
   account: '',
   balances: {
@@ -212,6 +214,7 @@ export const sync = () => async (dispatch, getState) => {
     account,
     watched,
     contracts,
+    networkId,
   } = getState().web3connect;
 
   // Sync Account
@@ -221,6 +224,13 @@ export const sync = () => async (dispatch, getState) => {
     dispatch(watchBalance({ balanceOf: accounts[0] }));
   }
 
+  if (!networkId) {
+    dispatch({
+      type: UPDATE_NETWORK_ID,
+      payload: await web3.eth.net.getId(),
+    });
+  }
+
   // Sync Ethereum Balances
   watched.balances.ethereum.forEach(async address => {
     const balance = await web3.eth.getBalance(address);
@@ -433,6 +443,8 @@ export default function web3connectReducer(state = initialState, { type, payload
           },
         },
       };
+    case UPDATE_NETWORK_ID:
+      return { ...state, networkId: payload };
     default:
       return state;
   }

src/pages/Pool/AddLiquidity.js

@@ -307,7 +307,7 @@ class AddLiquidity extends Component {
           </div>
           <div className="pool__exchange-rate-wrapper">
             <span className="swap__exchange-rate">Current Pool Size</span>
-            <span>{` ${ethValue.dividedBy(10 ** 18).toFixed(2)} ${eth} + ${tokenValue.dividedBy(10 ** decimals).toFixed(2)} ${label}`}</span>
+            <span>{` ${ethValue.dividedBy(10 ** 18).toFixed(2)} ${eth} / ${tokenValue.dividedBy(10 ** decimals).toFixed(2)} ${label}`}</span>
           </div>
         </div>
       )
@@ -553,7 +553,7 @@ class AddLiquidity extends Component {
 
 export default connect(
   state => ({
-    isConnected: Boolean(state.web3connect.account),
+    isConnected: Boolean(state.web3connect.account) && state.web3connect.networkId == process.env.REACT_APP_NETWORK_ID,
     account: state.web3connect.account,
     balances: state.web3connect.balances,
     web3: state.web3connect.web3,

src/pages/Pool/CreateExchange.js

@@ -207,7 +207,7 @@ class CreateExchange extends Component {
 
 export default connect(
   state => ({
-    isConnected: Boolean(state.web3connect.account),
+    isConnected: Boolean(state.web3connect.account) && state.web3connect.networkId == process.env.REACT_APP_NETWORK_ID,
     account: state.web3connect.account,
     balances: state.web3connect.balances,
     web3: state.web3connect.web3,

src/pages/Pool/RemoveLiquidity.js

@@ -153,7 +153,7 @@ class RemoveLiquidity extends Component {
 
 
     const exchangeAddress = fromToken[tokenAddress];
-    if (!exchangeAddress || !web3 || !input) {
+    if (!exchangeAddress || !web3) {
       return [
         <CurrencyInputPanel
           key="remove-liquidity-input"
@@ -183,20 +183,25 @@ class RemoveLiquidity extends Component {
         </OversizedPanel>
       ];
     }
-    const { value, decimals } = getBalance(account, exchangeAddress);
+    const { value: liquidityBalance } = getBalance(account, exchangeAddress);
     const { value: ethReserve } = getBalance(exchangeAddress);
-    const { value: tokenReserve, label } = getBalance(exchangeAddress, tokenAddress);
+    const { value: tokenReserve, decimals: tokenDecimals, label } = getBalance(exchangeAddress, tokenAddress);
 
-    const ownership = value.dividedBy(totalSupply);
+    const ownership = liquidityBalance.dividedBy(totalSupply);
     const ethPer = ethReserve.dividedBy(totalSupply);
     const tokenPer = tokenReserve.dividedBy(totalSupply);
+    const exchangeRate = tokenReserve.div(ethReserve);
+
+    const ownedEth = ethPer.multipliedBy(liquidityBalance).dividedBy(10 ** 18);
+    const ownedToken = tokenPer.multipliedBy(liquidityBalance).dividedBy(10 ** tokenDecimals);
 
     return [
       <CurrencyInputPanel
         title="Output"
         description="(estimated)"
         key="remove-liquidity-input"
-        renderInput={() => (
+        renderInput={() => input
+          ? (
             <div className="remove-liquidity__output">
               <div className="remove-liquidity__output-text">
                 {`${ethPer.multipliedBy(input).toFixed(3)} ETH`}
@@ -206,7 +211,9 @@ class RemoveLiquidity extends Component {
                 {`${tokenPer.multipliedBy(input).toFixed(3)} ${label}`}
               </div>
             </div>
-        )}
+          )
+          : <div className="remove-liquidity__output" />
+        }
         disableTokenSelect
         disableUnlock
       />,
@@ -214,15 +221,19 @@ class RemoveLiquidity extends Component {
         <div className="pool__summary-panel">
           <div className="pool__exchange-rate-wrapper">
             <span className="pool__exchange-rate">Exchange Rate</span>
-            <span>{` ${ethReserve.dividedBy(10 ** 18).toFixed(2)} ETH + ${tokenReserve.dividedBy(10 ** decimals).toFixed(2)} ${label}`}</span>
+            <span>
+              {`1 ETH = ${exchangeRate.toFixed(4)} ${label}`}
+            </span>
           </div>
           <div className="pool__exchange-rate-wrapper">
             <span className="swap__exchange-rate">Current Pool Size</span>
-            <span>{totalSupply.dividedBy(10 ** decimals).toFixed(4)}</span>
+            <span>{`${ethReserve.dividedBy(10 ** 18).toFixed(2)} ETH / ${tokenReserve.dividedBy(10 ** tokenDecimals).toFixed(2)} ${label}`}</span>
           </div>
           <div className="pool__exchange-rate-wrapper">
-            <span className="swap__exchange-rate">Your Pool Share</span>
-            <span>{ownership.multipliedBy(100).toFixed(2)}%</span>
+            <span className="swap__exchange-rate">
+              Your Pool Share ({ownership.multipliedBy(100).toFixed(2)}%)
+            </span>
+            <span>{`${ownedEth.toFixed(2)} ETH / ${ownedToken.toFixed(2)} ${label}`}</span>
           </div>
         </div>
       </OversizedPanel>
@@ -282,7 +293,7 @@ class RemoveLiquidity extends Component {
 
 export default connect(
   state => ({
-    isConnected: Boolean(state.web3connect.account),
+    isConnected: Boolean(state.web3connect.account) && state.web3connect.networkId == process.env.REACT_APP_NETWORK_ID,
     web3: state.web3connect.web3,
     balances: state.web3connect.balances,
     account: state.web3connect.account,

src/pages/Send/index.js

@@ -666,7 +666,7 @@ class Send extends Component {
         </OversizedPanel>
       );
     }
-    console.log(outputLabel)
+
     return (
       <OversizedPanel hideBottom>
         <div className="swap__exchange-rate-wrapper">
@@ -776,7 +776,7 @@ class Send extends Component {
 export default connect(
   state => ({
     balances: state.web3connect.balances,
-    isConnected: !!state.web3connect.account,
+    isConnected: !!state.web3connect.account && state.web3connect.networkId == process.env.REACT_APP_NETWORK_ID,
     account: state.web3connect.account,
     web3: state.web3connect.web3,
     exchangeAddresses: state.addresses.exchangeAddresses,

src/pages/Swap/index.js

@@ -751,7 +751,7 @@ class Swap extends Component {
 export default connect(
   state => ({
     balances: state.web3connect.balances,
-    isConnected: !!state.web3connect.account,
+    isConnected: !!state.web3connect.account && state.web3connect.networkId == process.env.REACT_APP_NETWORK_ID,
     account: state.web3connect.account,
     web3: state.web3connect.web3,
     exchangeAddresses: state.addresses.exchangeAddresses,