subscribeToNewsletter (newsletter/action.ts)

Server action to subscribe a user to a newsletter with validation and double opt‑in.

// Source: https://github.com/yournextstore/yournextstore | License: MIT | Copyright 2024 Your Next Store, Inc
// Provided via justclaw.it.com; keep this notice with the code.
"use server";

import { try_ } from "safe-try";
import { commerce } from "@/lib/commerce";
import { getStoreConfig } from "@/lib/store-config";

type NewsletterState = {
	success: boolean;
	message: string;
	/** Echoed on success for lib/track.tsx. */
	email?: string;
	error?: string;
} | null;

export async function subscribeToNewsletter(
	_prev: NewsletterState,
	formData: FormData,
): Promise<NewsletterState> {
	const email = formData.get("email");

	if (!email || typeof email !== "string") {
		return { success: false, message: "", error: "Please enter a valid email address." };
	}

	// The form disables its submi

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