From 0421c86039e58e1cb06d407bd51bc5a2a2fbf40f Mon Sep 17 00:00:00 2001
From: Hampus <hampus@fluxer.app>
Date: Fri, 11 Sep 2026 00:28:14 +0200
Subject: [PATCH] fix(api): price gifts in the base currency everywhere (#2648)

---
 .../StripeCheckoutCountryEnforcement.test.ts  | 23 +++++++++++++++
 fluxer_api/src/api/utils/CurrencyUtils.ts     |  5 +++-
 .../src/api/utils/tests/CurrencyUtils.test.ts | 28 ++++++++++++++++++-
 3 files changed, 54 insertions(+), 2 deletions(-)

diff --git a/fluxer_api/src/api/stripe/tests/StripeCheckoutCountryEnforcement.test.ts b/fluxer_api/src/api/stripe/tests/StripeCheckoutCountryEnforcement.test.ts
index ba89bed80..38207bfc8 100644
--- a/fluxer_api/src/api/stripe/tests/StripeCheckoutCountryEnforcement.test.ts
+++ b/fluxer_api/src/api/stripe/tests/StripeCheckoutCountryEnforcement.test.ts
@@ -112,6 +112,29 @@ describe('StripeCheckoutCountryEnforcement', () => {
 		expect(stripeHandlers.spies.createdCheckoutSessions).toHaveLength(0);
 	});
 
+	test('rejects a localized gift price even from inside that market', async () => {
+		lookupGeoipMock.mockResolvedValue(geoipCountry('BR'));
+		const token = await createPurchaser();
+		await createBuilder(harness, token)
+			.post('/stripe/checkout/gift')
+			.body({price_id: MOCK_PRICES.gift1MonthBrl, country_code: 'BR'})
+			.expect(HTTP_STATUS.BAD_REQUEST, APIErrorCodes.STRIPE_INVALID_PRODUCT_CONFIGURATION)
+			.execute();
+		expect(stripeHandlers.spies.createdCheckoutSessions).toHaveLength(0);
+	});
+
+	test('accepts the base gift price from inside a localized market', async () => {
+		lookupGeoipMock.mockResolvedValue(geoipCountry('BR'));
+		const token = await createPurchaser();
+		const response = await createBuilder<{url: string}>(harness, token)
+			.post('/stripe/checkout/gift')
+			.body({price_id: MOCK_PRICES.gift1MonthUsd, country_code: 'BR'})
+			.expect(HTTP_STATUS.OK)
+			.execute();
+		expect(response.url).toContain('checkout.stripe.com');
+		expect(stripeHandlers.spies.createdCheckoutSessions).toHaveLength(1);
+	});
+
 	test('accepts the localized price for a request that geolocates to that market', async () => {
 		lookupGeoipMock.mockResolvedValue(geoipCountry('BR'));
 		const token = await createPurchaser();
diff --git a/fluxer_api/src/api/utils/CurrencyUtils.ts b/fluxer_api/src/api/utils/CurrencyUtils.ts
index 27f4e8b06..3e10748b7 100644
--- a/fluxer_api/src/api/utils/CurrencyUtils.ts
+++ b/fluxer_api/src/api/utils/CurrencyUtils.ts
@@ -32,5 +32,8 @@ export function getCurrencyPreferences(countryCode: string | null | undefined):
 }
 
 export function getGiftCurrencyPreferences(countryCode: string | null | undefined): Array<Currency> {
-	return getCurrencyPreferences(countryCode);
+	if (countryCode && isEuEeaCountryCode(countryCode.toUpperCase())) {
+		return ['EUR', 'USD'];
+	}
+	return ['USD', 'EUR'];
 }
diff --git a/fluxer_api/src/api/utils/tests/CurrencyUtils.test.ts b/fluxer_api/src/api/utils/tests/CurrencyUtils.test.ts
index eef6df46d..682a0edf4 100644
--- a/fluxer_api/src/api/utils/tests/CurrencyUtils.test.ts
+++ b/fluxer_api/src/api/utils/tests/CurrencyUtils.test.ts
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
 import {describe, expect, it} from 'vitest';
-import {getCurrency} from '../CurrencyUtils';
+import {getCurrency, getCurrencyPreferences, getGiftCurrencyPreferences} from '../CurrencyUtils';
 
 describe('getCurrency', () => {
 	describe('returns USD for non-EEA countries', () => {
@@ -162,3 +162,29 @@ describe('getCurrency', () => {
 		});
 	});
 });
+
+describe('getGiftCurrencyPreferences', () => {
+	it('never offers a localized currency for a localized market', () => {
+		for (const country of ['BR', 'IN', 'PL', 'TR']) {
+			expect(getGiftCurrencyPreferences(country)).not.toContain(getCurrencyPreferences(country)[0]);
+		}
+	});
+	it('uses EUR for EEA countries', () => {
+		expect(getGiftCurrencyPreferences('DE')).toEqual(['EUR', 'USD']);
+		expect(getGiftCurrencyPreferences('PL')).toEqual(['EUR', 'USD']);
+	});
+	it('uses USD everywhere else', () => {
+		expect(getGiftCurrencyPreferences('BR')).toEqual(['USD', 'EUR']);
+		expect(getGiftCurrencyPreferences('IN')).toEqual(['USD', 'EUR']);
+		expect(getGiftCurrencyPreferences('TR')).toEqual(['USD', 'EUR']);
+		expect(getGiftCurrencyPreferences('US')).toEqual(['USD', 'EUR']);
+	});
+	it('uses USD when the country is unknown', () => {
+		expect(getGiftCurrencyPreferences(null)).toEqual(['USD', 'EUR']);
+		expect(getGiftCurrencyPreferences(undefined)).toEqual(['USD', 'EUR']);
+	});
+	it('is case insensitive', () => {
+		expect(getGiftCurrencyPreferences('de')).toEqual(['EUR', 'USD']);
+		expect(getGiftCurrencyPreferences('br')).toEqual(['USD', 'EUR']);
+	});
+});