🧑‍💻 Improve env variables type safety and management (#718)

Closes #679

apps/builder/src/features/billing/api/updateSubscription.ts

@@ -7,15 +7,13 @@ import { workspaceSchema } from '@typebot.io/schemas'
 import Stripe from 'stripe'
 import { isDefined } from '@typebot.io/lib'
 import { z } from 'zod'
-import {
-  getChatsLimit,
-  getStorageLimit,
-  priceIds,
-} from '@typebot.io/lib/pricing'
+import { getChatsLimit, getStorageLimit } from '@typebot.io/lib/pricing'
 import { chatPriceIds, storagePriceIds } from './getSubscription'
 import { createCheckoutSessionUrl } from './createCheckoutSession'
 import { isAdminWriteWorkspaceForbidden } from '@/features/workspace/helpers/isAdminWriteWorkspaceForbidden'
 import { getUsage } from '@typebot.io/lib/api/getUsage'
+import { env } from '@typebot.io/env'
+import { priceIds } from '@typebot.io/lib/api/pricing'
 
 export const updateSubscription = authenticatedProcedure
   .meta({
@@ -57,7 +55,7 @@ export const updateSubscription = authenticatedProcedure
       },
       ctx: { user },
     }) => {
-      if (!process.env.STRIPE_SECRET_KEY)
+      if (!env.STRIPE_SECRET_KEY)
         throw new TRPCError({
           code: 'INTERNAL_SERVER_ERROR',
           message: 'Stripe environment variables are missing',
@@ -85,7 +83,7 @@ export const updateSubscription = authenticatedProcedure
           code: 'NOT_FOUND',
           message: 'Workspace not found',
         })
-      const stripe = new Stripe(process.env.STRIPE_SECRET_KEY, {
+      const stripe = new Stripe(env.STRIPE_SECRET_KEY, {
         apiVersion: '2022-11-15',
       })
       const { data } = await stripe.subscriptions.list({
@@ -95,10 +93,9 @@ export const updateSubscription = authenticatedProcedure
       })
       const subscription = data[0] as Stripe.Subscription | undefined
       const currentPlanItemId = subscription?.items.data.find((item) =>
-        [
-          process.env.STRIPE_STARTER_PRODUCT_ID,
-          process.env.STRIPE_PRO_PRODUCT_ID,
-        ].includes(item.price.product.toString())
+        [env.STRIPE_STARTER_PRODUCT_ID, env.STRIPE_PRO_PRODUCT_ID].includes(
+          item.price.product.toString()
+        )
       )?.id
       const currentAdditionalChatsItemId = subscription?.items.data.find(
         (item) => chatPriceIds.includes(item.price.id)