migrate to blitzjs

app/api/newsletter/_mailchimp.ts

@@ -0,0 +1,21 @@
+import getConfig from "next/config"
+import axios from "axios"
+
+const { serverRuntimeConfig } = getConfig()
+
+export async function addSubscriber(email: string) {
+	const { apiKey, audienceId } = serverRuntimeConfig.mailChimp
+	const region = apiKey.split("-")[1]
+	const url = `https://${region}.api.mailchimp.com/3.0/lists/${audienceId}/members`
+	const data = {
+		email_address: email,
+		status: "subscribed",
+	}
+	const base64ApiKey = Buffer.from(`any:${apiKey}`).toString("base64")
+	const headers = {
+		"Content-Type": "application/json",
+		Authorization: `Basic ${base64ApiKey}`,
+	}
+
+	return axios.post(url, data, { headers })
+}

app/api/newsletter/subscribe.ts

@@ -0,0 +1,59 @@
+import type { NextApiRequest, NextApiResponse } from "next"
+import zod from "zod"
+
+import type { ApiError } from "../_types"
+import appLogger from "../../../integrations/logger"
+import { addSubscriber } from "./_mailchimp"
+
+type Response = {} | ApiError
+
+const logger = appLogger.child({ route: "/api/newsletter/subscribe" })
+
+const bodySchema = zod.object({
+	email: zod.string().email(),
+})
+
+export default async function subscribeToNewsletter(
+	req: NextApiRequest,
+	res: NextApiResponse<Response>
+) {
+	if (req.method !== "POST") {
+		const statusCode = 405
+		const apiError: ApiError = {
+			statusCode,
+			errorMessage: `Method ${req.method} Not Allowed`,
+		}
+		logger.error(apiError)
+
+		res.setHeader("Allow", ["POST"])
+		res.status(statusCode).send(apiError)
+		return
+	}
+
+	let body
+	try {
+		body = bodySchema.parse(req.body)
+	} catch (error) {
+		const statusCode = 400
+		const apiError: ApiError = {
+			statusCode,
+			errorMessage: "Body is malformed",
+		}
+		logger.error(error)
+
+		res.status(statusCode).send(apiError)
+		return
+	}
+
+	try {
+		await addSubscriber(body.email)
+	} catch (error) {
+		console.log("error", error.response?.data)
+
+		if (error.response?.data.title !== "Member Exists") {
+			return res.status(error.response?.status ?? 400).end()
+		}
+	}
+
+	res.status(200).end()
+}