otp actions

website/src/actions/otp/send-otp.ts

@@ -0,0 +1,51 @@
+import crypto from "node:crypto";
+import { SENDMAIL_BIN } from "astro:env/server";
+import nodemailer from "nodemailer";
+import { z } from "astro/zod";
+import { defineAction } from "astro:actions";
+import { db, Otp } from "astro:db";
+
+export default defineAction({
+  input: z.object({
+    email: z.string().email(),
+    name: z.string().optional(),
+    type: z.enum(["email"]),
+  }),
+  handler: sendOtp,
+});
+
+type OtpParams = {
+  email: string;
+  name?: string;
+  type: "email";
+};
+
+async function sendOtp({ email, name }: OtpParams) {
+  const otp = crypto.randomBytes(3).toString("hex").toLocaleUpperCase();
+  const otpPretty = `${otp.slice(0, 3)}-${otp.slice(3)}`;
+
+  const info = await transporter.sendMail({
+    from: `"Joe Carstairs" <me@joeac.net>`,
+    to: `${name ? `"${name}" ` : ""}<${email}>`,
+    subject: `joeac.net: your OTP is ${otpPretty}`,
+    text: `
+Someone tried to use this email address on joeac.net. If this was you,
+your one-time passcode is ${otpPretty}. If this wasn't you, you don't need
+to do anything.`,
+  });
+  console.log(
+    `Sent OTP (${otpPretty}) to ${email}. Message ID: ${info.messageId}`,
+  );
+
+  await db.insert(Otp).values({
+    userId: email,
+    value: otp,
+    createdAt: Date.now(),
+    validUntil: Date.now() + 1000 * 60 * 5,
+  });
+}
+
+const transporter = nodemailer.createTransport({
+  sendmail: true,
+  path: SENDMAIL_BIN,
+});