Free gifting on thanksgiving

MutinyWallet · Nov 20, 2023 · d7ee953 · d7ee953
1 parent 8a427c6
commit d7ee953
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Showing 3 changed files with 31 additions and 10 deletions.
diff --git a/src/routes/settings/Gift.tsx b/src/routes/settings/Gift.tsx
@@ -40,7 +40,7 @@ import {
 } from "~/components";
 import { useI18n } from "~/i18n/context";
 import { useMegaStore } from "~/state/megaStore";
-import { eify } from "~/utils";
+import { eify, isFreeGiftingDay } from "~/utils";
 import { baseUrlAccountingForNative } from "~/utils/baseUrl";
 import { createDeepSignal } from "~/utils/deepSignal";
 
@@ -203,11 +203,9 @@ export function Gift() {
     };
 
     const selfHosted = state.settings?.selfhosted === "true";
-    const today = new Date();
-    // days are 1 indexed, months are 0 indexed
-    const isChristmas = today.getDate() === 25 && today.getMonth() === 11;
+    const freeDay = isFreeGiftingDay();
 
-    const canGift = state.mutiny_plus || selfHosted || isChristmas;
+    const canGift = state.mutiny_plus || selfHosted || freeDay;
 
     return (
         <MutinyWalletGuard>

diff --git a/src/routes/settings/Root.tsx b/src/routes/settings/Root.tsx
@@ -17,6 +17,7 @@ import {
 } from "~/components";
 import { useI18n } from "~/i18n/context";
 import { useMegaStore } from "~/state/megaStore";
+import { isFreeGiftingDay } from "~/utils";
 
 function SettingsLinkList(props: {
     header: string;
@@ -74,9 +75,7 @@ export function Settings() {
     const COMMIT_HASH = import.meta.env.__COMMIT_HASH__;
 
     const selfHosted = state.settings?.selfhosted === "true";
-    const today = new Date();
-    // days are 1 indexed, months are 0 indexed
-    const isChristmas = today.getDate() === 25 && today.getMonth() === 11;
+    const freeDay = isFreeGiftingDay();
 
     const ios = Capacitor.getPlatform() === "ios";
 
@@ -138,13 +137,13 @@ export function Settings() {
                                 disabled: !(
                                     state.mutiny_plus ||
                                     selfHosted ||
-                                    isChristmas
+                                    freeDay
                                 ),
                                 text: i18n.t("settings.gift.title"),
                                 caption: !(
                                     state.mutiny_plus ||
                                     selfHosted ||
-                                    isChristmas
+                                    freeDay
                                 )
                                     ? i18n.t("settings.gift.no_plus_caption")
                                     : undefined

diff --git a/src/utils/subscriptions.ts b/src/utils/subscriptions.ts
@@ -5,3 +5,27 @@ export function subscriptionValid(subscriptionExpiresTimestamp?: number) {
 
     return subscriptionExpiresTimestamp + GRACE > Math.ceil(Date.now() / 1000);
 }
+
+export function isFreeGiftingDay() {
+    const today = new Date();
+    // days are 1 indexed, months are 0 indexed
+    const isChristmas = today.getDate() === 25 && today.getMonth() === 11;
+
+    return isChristmas || isThanksgiving(today);
+}
+
+function isThanksgiving(today: Date) {
+    if (today.getMonth() !== 10) return false;
+
+    const year = today.getFullYear();
+    const thanksgivingDay = new Date(year, 10, 1);
+
+    // Find out what day of the week Nov 1 is
+    const dayOfWeek = thanksgivingDay.getDay();
+
+    // Calculate the date of the fourth Thursday in November
+    thanksgivingDay.setDate(1 + ((4 - dayOfWeek) % 7) + 3 * 7);
+
+    // Compare the current date with Thanksgiving date
+    return today.getDate() === thanksgivingDay.getDate();
+}