Used Intl.NumberFormat to determine currency symbol (#128)

refs https://github.com/TryGhost/Team/issues/473
refs https://github.com/TryGhost/Ghost/pull/12700/commits/006cf434

Ghost no longer sends back currency symbols from the API, so we calculate the currency
symbol using `Intl.NumberFormat`.

We've also renamed the `currency` property to `currency_symbol` - as it does not store a currency.

Depending on currency and locale, currency symbols can be the currency ISO code (e.g. AED).
In order to style these differently we add a different class to the element.

ghost/portal/src/components/common/PlansSection.js

@@ -241,10 +241,12 @@ function Checkbox({name, onPlanSelect, isChecked, disabled}) {
     );
 }
 
-function PriceLabel({currency, price}) {
+function PriceLabel({currencySymbol, price}) {
+    const isSymbol = currencySymbol.length !== 3;
+    const currencyClass = isSymbol ? 'gh-portal-plan-currency gh-portal-plan-currency-symbol' : 'gh-portal-plan-currency gh-portal-plan-currency-code';
     return (
         <div className='gh-portal-plan-pricelabel'>
-            <span className='gh-portal-plan-currency'>{currency}</span>
+            <span className={currencyClass}>{currencySymbol}</span>
             <span className='gh-portal-plan-price'>{price}</span>
         </div>
     );
@@ -254,7 +256,7 @@ function PlanOptions({plans, selectedPlan, onPlanSelect, changePlan}) {
     const hasMonthlyPlan = plans.some(({name}) => {
         return name === 'Monthly';
     });
-    return plans.map(({name, currency, price, discount}, i) => {
+    return plans.map(({name, currency_symbol: currencySymbol, price, discount}, i) => {
         const isChecked = selectedPlan === name;
         const classes = (isChecked ? 'gh-portal-plan-section checked' : 'gh-portal-plan-section');
         const planDetails = {};
@@ -279,7 +281,7 @@ function PlanOptions({plans, selectedPlan, onPlanSelect, changePlan}) {
             <div className={classes} key={name} onClick={e => onPlanSelect(e, name)}>
                 <Checkbox name={name} isChecked={isChecked} onPlanSelect={onPlanSelect} />
                 <h4 className='gh-portal-plan-name'>{displayName || name}</h4>
-                <PriceLabel name={name} currency={currency} price={price} />
+                <PriceLabel name={name} currencySymbol={currencySymbol} price={price} />
                 <div className='gh-portal-plan-featurewrapper'>
                     <div className='gh-portal-plan-feature'>
                         {planDetails.feature}

ghost/portal/src/components/common/PlansSection.test.js

@@ -6,9 +6,9 @@ const setup = (overrides = {}) => {
     const mockOnPlanSelectFn = jest.fn();
     const props = {
         plans: [
-            {type: 'free', price: 'Decide later', name: 'Free'},
-            {type: 'month', price: 12, currency: '$', name: 'Monthly'},
-            {type: 'year', price: 110, currency: '$', name: 'Yearly'}
+            {type: 'free', price: 'Decide later', currency_symbol: '$', name: 'Free'},
+            {type: 'month', price: 12, currency_symbol: '$', name: 'Monthly'},
+            {type: 'year', price: 110, currency_symbol: '$', name: 'Yearly'}
         ],
         selectedPlan: 'Monthly',
         onPlanSelect: mockOnPlanSelectFn

ghost/portal/src/components/pages/AccountHomePage.js

@@ -132,8 +132,8 @@ const UserHeader = ({member, brandColor}) => {
 
 const PaidAccountActions = ({member, site, openUpdatePlan, onEditBilling}) => {
     const PlanLabel = ({plan, isComplimentary}) => {
-        const {amount = 0, currency_symbol: currencySymbol = '$', interval} = plan;
-        let label = `${currencySymbol}${amount / 100}/${interval}`;
+        const {amount = 0, currency, interval} = plan;
+        let label = `${Intl.NumberFormat('en', {currency, style: 'currency'}).format(amount / 100)}/${interval}`;
         if (isComplimentary) {
             label = `Complimentary (${label})`;
         }

ghost/portal/src/components/pages/SignupPage.js

@@ -266,20 +266,20 @@ class SignupPage extends React.Component {
             {
                 type: 'month',
                 price: plans.monthly,
-                currency: plans.currency_symbol,
+                currency_symbol: plans.currency_symbol,
                 name: 'Monthly'
             },
             {
                 type: 'year',
                 price: plans.yearly,
-                currency: plans.currency_symbol,
+                currency_symbol: plans.currency_symbol,
                 name: 'Yearly',
                 discount
             }
         ];
 
         if (allowSelfSignup && (portalPlans === undefined || portalPlans.includes('free'))) {
-            plansData.push({type: 'free', price: 0, currency: plans.currency_symbol, name: 'Free'});
+            plansData.push({type: 'free', price: 0, currency_symbol: plans.currency_symbol, name: 'Free'});
         }
 
         if (isStripeConfigured && pageQuery !== 'free') {

ghost/portal/src/utils/fixtures.js

@@ -8,8 +8,7 @@ export const site = {
     plans: {
         monthly: 5,
         yearly: 15,
-        currency: 'USD',
-        currency_symbol: '$'
+        currency: 'USD'
     },
     allow_self_signup: true,
     is_stripe_configured: true,
@@ -52,8 +51,7 @@ export const member = {
                 nickname: 'Yearly',
                 interval: 'year',
                 amount: 1500,
-                currency: 'USD',
-                currency_symbol: '$'
+                currency: 'USD'
             },
             status: 'active',
             start_date: '2019-05-01T11:42:40.000Z',
@@ -82,8 +80,7 @@ export const member = {
                 nickname: 'Complimentary',
                 amount: 0,
                 interval: 'year',
-                currency: 'USD',
-                currency_symbol: '$'
+                currency: 'USD'
             },
             status: 'active',
             start_date: '2020-09-03T11:12:37.000Z',
@@ -112,8 +109,7 @@ export const member = {
                 nickname: 'Yearly',
                 interval: 'year',
                 amount: 500,
-                currency: 'USD',
-                currency_symbol: '$'
+                currency: 'USD'
             },
             status: 'active',
             start_date: '2019-05-01T11:42:40.000Z',

ghost/portal/src/utils/helpers.js

@@ -124,13 +124,13 @@ export function getSitePlans({site = {}, includeFree = true, pageQuery} = {}) {
         {
             type: 'month',
             price: plans.monthly,
-            currency: plans.currency_symbol,
+            currency_symbol: getCurrencySymbol(plans.currency),
             name: 'Monthly'
         },
         {
             type: 'year',
             price: plans.yearly,
-            currency: plans.currency_symbol,
+            currency_symbol: getCurrencySymbol(plans.currency),
             name: 'Yearly',
             discount
         }
@@ -140,7 +140,7 @@ export function getSitePlans({site = {}, includeFree = true, pageQuery} = {}) {
         plansData.push({
             type: 'free',
             price: 0,
-            currency: plans.currency_symbol,
+            currency_symbol: getCurrencySymbol(plans.currency),
             name: 'Free'
         });
     }
@@ -188,15 +188,7 @@ export const getSiteDomain = ({site}) => {
 };
 
 export const getCurrencySymbol = (currency) => {
-    const CURRENCY_SYMBOLS = {
-        USD: '$',
-        AUD: '$',
-        CAD: '$',
-        GBP: '£',
-        EUR: '€',
-        INR: '₹'
-    };
-    return CURRENCY_SYMBOLS[currency] || '';
+    return Intl.NumberFormat('en', {currency, style: 'currency'}).format(0).replace(/[\d\s.]/g, '');
 };
 
 export const createPopupNotification = ({type, status, autoHide, duration, closeable, state, message, meta = {}}) => {