From caaa70f6302b0d84d43ca93ab014e0cf37886c0a Mon Sep 17 00:00:00 2001
From: Fabio Berger <me@fabioberger.com>
Date: Sun, 11 Mar 2018 12:33:34 +0100
Subject: Fix getTokenBalanceAndAllowanceAsync to take ownerAddressIfExists so
 that we don't sometimes pass an empty string and sometimes undefined

---
 packages/website/ts/blockchain.ts                             | 11 +++++++----
 .../ts/components/dialogs/eth_weth_conversion_dialog.tsx      |  4 +++-
 packages/website/ts/components/eth_wrappers.tsx               | 11 +++++++----
 .../ts/components/generate_order/generate_order_form.tsx      |  3 ++-
 packages/website/ts/components/inputs/token_amount_input.tsx  |  3 ++-
 packages/website/ts/components/token_balances.tsx             |  6 ++++--
 6 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/packages/website/ts/blockchain.ts b/packages/website/ts/blockchain.ts
index 3e19cb715..14582eae9 100644
--- a/packages/website/ts/blockchain.ts
+++ b/packages/website/ts/blockchain.ts
@@ -496,18 +496,21 @@ export class Blockchain {
         );
         return tokenBalanceAndAllowance;
     }
-    public async getTokenBalanceAndAllowanceAsync(ownerAddress: string, tokenAddress: string): Promise<BigNumber[]> {
+    public async getTokenBalanceAndAllowanceAsync(
+        ownerAddressIfExists: string,
+        tokenAddress: string,
+    ): Promise<BigNumber[]> {
         utils.assert(!_.isUndefined(this._zeroEx), 'ZeroEx must be instantiated.');
 
-        if (_.isEmpty(ownerAddress)) {
+        if (_.isUndefined(ownerAddressIfExists)) {
             const zero = new BigNumber(0);
             return [zero, zero];
         }
         let balance = new BigNumber(0);
         let allowance = new BigNumber(0);
         if (this._doesUserAddressExist()) {
-            balance = await this._zeroEx.token.getBalanceAsync(tokenAddress, ownerAddress);
-            allowance = await this._zeroEx.token.getProxyAllowanceAsync(tokenAddress, ownerAddress);
+            balance = await this._zeroEx.token.getBalanceAsync(tokenAddress, ownerAddressIfExists);
+            allowance = await this._zeroEx.token.getProxyAllowanceAsync(tokenAddress, ownerAddressIfExists);
         }
         return [balance, allowance];
     }
diff --git a/packages/website/ts/components/dialogs/eth_weth_conversion_dialog.tsx b/packages/website/ts/components/dialogs/eth_weth_conversion_dialog.tsx
index 72ebe1f67..d1bdb447f 100644
--- a/packages/website/ts/components/dialogs/eth_weth_conversion_dialog.tsx
+++ b/packages/website/ts/components/dialogs/eth_weth_conversion_dialog.tsx
@@ -1,6 +1,7 @@
 import { ZeroEx } from '0x.js';
 import { colors } from '@0xproject/react-shared';
 import { BigNumber } from '@0xproject/utils';
+import * as _ from 'lodash';
 import Dialog from 'material-ui/Dialog';
 import FlatButton from 'material-ui/FlatButton';
 import * as React from 'react';
@@ -185,8 +186,9 @@ export class EthWethConversionDialog extends React.Component<
         this.props.onCancelled();
     }
     private async _fetchEthTokenBalanceAsync() {
+        const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
         const [balance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
-            this.props.userAddress,
+            userAddressIfExists,
             this.props.token.address,
         );
         if (!this._isUnmounted) {
diff --git a/packages/website/ts/components/eth_wrappers.tsx b/packages/website/ts/components/eth_wrappers.tsx
index 327d7bd7f..b12c637e5 100644
--- a/packages/website/ts/components/eth_wrappers.tsx
+++ b/packages/website/ts/components/eth_wrappers.tsx
@@ -351,8 +351,9 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
                 [outdatedWETHAddress]: false,
             },
         });
+        const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
         const [balance, allowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
-            this.props.userAddress,
+            userAddressIfExists,
             outdatedWETHAddress,
         );
         this.setState({
@@ -372,8 +373,9 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
     private async _fetchWETHStateAsync() {
         const tokens = _.values(this.props.tokenByAddress);
         const wethToken = _.find(tokens, token => token.symbol === 'WETH');
+        const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
         const [wethBalance, wethAllowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
-            this.props.userAddress,
+            userAddressIfExists,
             wethToken.address,
         );
 
@@ -382,7 +384,7 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
         const outdatedWETHStateByAddress: OutdatedWETHStateByAddress = {};
         for (const address of outdatedWETHAddresses) {
             const [balance, allowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
-                this.props.userAddress,
+                userAddressIfExists,
                 address,
             );
             outdatedWETHStateByAddress[address] = {
@@ -423,8 +425,9 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
     }
     private async _refetchEthTokenStateAsync() {
         const etherToken = this._getEthToken();
+        const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
         const [balance, allowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
-            this.props.userAddress,
+            userAddressIfExists,
             etherToken.address,
         );
         this.setState({
diff --git a/packages/website/ts/components/generate_order/generate_order_form.tsx b/packages/website/ts/components/generate_order/generate_order_form.tsx
index 26fa904fe..ea1d57a7b 100644
--- a/packages/website/ts/components/generate_order/generate_order_form.tsx
+++ b/packages/website/ts/components/generate_order/generate_order_form.tsx
@@ -237,8 +237,9 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
 
         // Check if all required inputs were supplied
         const debitToken = this.props.sideToAssetToken[Side.Deposit];
+        const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
         const [debitBalance, debitAllowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
-            this.props.userAddress,
+            userAddressIfExists,
             debitToken.address,
         );
         const receiveAmount = this.props.sideToAssetToken[Side.Receive].amount;
diff --git a/packages/website/ts/components/inputs/token_amount_input.tsx b/packages/website/ts/components/inputs/token_amount_input.tsx
index 53248c065..b55840fc4 100644
--- a/packages/website/ts/components/inputs/token_amount_input.tsx
+++ b/packages/website/ts/components/inputs/token_amount_input.tsx
@@ -109,8 +109,9 @@ export class TokenAmountInput extends React.Component<TokenAmountInputProps, Tok
         this.setState({
             isBalanceAndAllowanceLoaded: false,
         });
+        const userAddressIfExists = _.isEmpty(userAddress) ? undefined : userAddress;
         const [balance, allowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
-            userAddress,
+            userAddressIfExists,
             tokenAddress,
         );
         if (!this._isUnmounted) {
diff --git a/packages/website/ts/components/token_balances.tsx b/packages/website/ts/components/token_balances.tsx
index fe27bfa01..894e0721f 100644
--- a/packages/website/ts/components/token_balances.tsx
+++ b/packages/website/ts/components/token_balances.tsx
@@ -687,9 +687,10 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
     }
     private async _fetchBalancesAndAllowancesAsync(tokenAddresses: string[]) {
         const trackedTokenStateByAddress = this.state.trackedTokenStateByAddress;
+        const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
         for (const tokenAddress of tokenAddresses) {
             const [balance, allowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
-                this.props.userAddress,
+                userAddressIfExists,
                 tokenAddress,
             );
             trackedTokenStateByAddress[tokenAddress] = {
@@ -716,8 +717,9 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
         return trackedTokenStateByAddress;
     }
     private async _refetchTokenStateAsync(tokenAddress: string) {
+        const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
         const [balance, allowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
-            this.props.userAddress,
+            userAddressIfExists,
             tokenAddress,
         );
         this.setState({
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