go: support coupon

packages/console/core/src/billing.ts

@@ -254,7 +254,7 @@ export namespace Billing {
       const createSession = () =>
         Billing.stripe().checkout.sessions.create({
           mode: "subscription",
-          discounts: [{ coupon: LiteData.firstMonth50Coupon() }],
+          discounts: [{ coupon: LiteData.firstMonthCoupon(email!) }],
           ...(billing.customerID
             ? {
                 customer: billing.customerID,

packages/console/core/src/lite.ts

@@ -11,6 +11,11 @@ export namespace LiteData {
   export const productID = fn(z.void(), () => Resource.ZEN_LITE_PRICE.product)
   export const priceID = fn(z.void(), () => Resource.ZEN_LITE_PRICE.price)
   export const priceInr = fn(z.void(), () => Resource.ZEN_LITE_PRICE.priceInr)
-  export const firstMonth50Coupon = fn(z.void(), () => Resource.ZEN_LITE_PRICE.firstMonth50Coupon)
+  export const firstMonthCoupon = fn(z.string(), (email) => {
+    const invitees = Resource.ZEN_LITE_COUPON_FIRST_MONTH_100_INVITEES.value.split(",")
+    return invitees.includes(email)
+      ? Resource.ZEN_LITE_PRICE.firstMonth100Coupon
+      : Resource.ZEN_LITE_PRICE.firstMonth50Coupon
+  })
   export const planName = fn(z.void(), () => "lite")
 }

packages/console/core/sst-env.d.ts

@@ -142,7 +142,12 @@ declare module "sst" {
       "type": "sst.sst.Secret"
       "value": string
     }
+    "ZEN_LITE_COUPON_FIRST_MONTH_100_INVITEES": {
+      "type": "sst.sst.Secret"
+      "value": string
+    }
     "ZEN_LITE_PRICE": {
+      "firstMonth100Coupon": string
       "firstMonth50Coupon": string
       "price": string
       "priceInr": number