getStripeSubscriptionTier (config.ts)

Resolves billing tier (free/pro/lifetime) for a Stripe or Lemon Squeezy subscription, mapping variant/prices to app pricing model for getServerSession.

import { env } from "@/env";
import { PremiumTier } from "@prisma/client";

type Feature = { text: string; tooltip?: string };

export type Tier = {
  name: string;
  tiers: { monthly: PremiumTier; annually: PremiumTier };
  price: { monthly: number; annually: number };
  priceAdditional: { monthly: number; annually: number };
  discount: { monthly: number; annually: number };
  quantity?: number;
  description: string;
  features: Feature[];
  cta: string;
  ctaLink?: string;
  mostPopular?: boolean;
};

const pricing: Record<PremiumTier, number> = {
  [PremiumTier.BASIC_MONTHLY]: 16,
  [PremiumTier.BASIC_ANNUALLY]: 8,
  [PremiumTier.PRO_MONTHLY]: 16,
  [PremiumTier.PRO_ANNUALLY]: 10,
  [PremiumTier.BUSINESS_MONTHLY]: 20,
  [PremiumTier.BUSINESS_ANNUALLY]: 16,
  [PremiumTier.BUSINESS_PLUS

... (truncated -- full source via MCP)