💸 Create abstraction for handling pricing (#1215)

packages/billing/package.json

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+{
+  "name": "@rallly/billing",
+  "version": "0.0.0",
+  "private": true,
+  "exports": {
+    "./server/*": "./src/server/*.tsx",
+    "./next": "./src/next/index.ts",
+    ".": "./src/index.ts"
+  },
+  "dependencies": {
+    "@rallly/ui": "*",
+    "stripe": "^13.2.0",
+    "@radix-ui/react-radio-group": "^1.2.0",
+    "next": "*"
+  }
+}

packages/billing/src/index.ts

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+export * from "./lib/stripe";

packages/billing/src/lib/get-pricing.ts

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+import { stripe } from "..";
+
+export async function getPricing() {
+  const prices = await stripe.prices.list({
+    lookup_keys: ["pro-monthly", "pro-yearly"],
+  });
+
+  const [monthly, yearly] = prices.data;
+
+  return {
+    monthly: {
+      currency: monthly.currency,
+      price: monthly.unit_amount_decimal,
+    },
+    yearly: {
+      currency: yearly.currency,
+      price: yearly.unit_amount,
+    },
+  };
+}

packages/billing/src/lib/stripe.ts

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+import Stripe from "stripe";
+
+export type { Stripe } from "stripe";
+
+export const stripe = new Stripe(process.env.STRIPE_SECRET_KEY as string, {
+  apiVersion: "2023-08-16",
+  typescript: true,
+});
+
+export async function getProPricing() {
+  const prices = await stripe.prices.list({
+    lookup_keys: ["pro-monthly", "pro-yearly"],
+  });
+
+  const [monthly, yearly] = prices.data;
+
+  if (monthly.unit_amount === null || yearly.unit_amount === null) {
+    throw new Error("Price not found");
+  }
+
+  return {
+    monthly: {
+      id: monthly.id,
+      amount: monthly.unit_amount,
+      currency: monthly.currency,
+    },
+    yearly: {
+      id: yearly.id,
+      amount: yearly.unit_amount,
+      currency: yearly.currency,
+    },
+  };
+}
+
+export type PricingData = Awaited<ReturnType<typeof getProPricing>>;

packages/billing/src/next/index.ts

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+import { NextRequest, NextResponse } from "next/server";
+import { getPricing } from "../lib/get-pricing";
+
+export async function GET(
+  request: NextRequest,
+  {
+    params,
+  }: {
+    params: {
+      method: string;
+    };
+  },
+) {
+  switch (params.method) {
+    case "pricing":
+      const data = await getPricing();
+      return NextResponse.json(data);
+    default:
+      return NextResponse.json({ message: "Method not found" });
+  }
+}
+
+export const handlers = { GET };

packages/billing/tsconfig.json

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+{
+  "extends": "@rallly/tsconfig/next.json",
+  "include": ["**/*.ts", "**/*.tsx", "**/*.js"],
+  "exclude": ["node_modules"],
+}