Enrollment + almost all auth

lib/email.ts

@@ -0,0 +1,86 @@
+import nodemailer from "nodemailer";
+
+type EmailPayload = {
+  to: string;
+  subject: string;
+  text: string;
+  html: string;
+};
+
+let cachedTransport: nodemailer.Transporter | null = null;
+
+function getTransporter() {
+  if (cachedTransport) return cachedTransport;
+
+  const host = process.env.SMTP_HOST;
+  const port = Number(process.env.SMTP_PORT || 465);
+  const user = process.env.SMTP_USER;
+  const pass = process.env.SMTP_PASS;
+  const secure =
+    process.env.SMTP_SECURE !== undefined
+      ? process.env.SMTP_SECURE === "true"
+      : port === 465;
+
+  if (!host || !user || !pass) {
+    throw new Error("SMTP not configured");
+  }
+
+  cachedTransport = nodemailer.createTransport({
+    host,
+    port,
+    secure,
+    auth: { user, pass },
+  });
+
+  return cachedTransport;
+}
+
+export async function sendEmail(payload: EmailPayload) {
+  const from = process.env.SMTP_FROM || process.env.SMTP_USER;
+  if (!from) {
+    throw new Error("SMTP_FROM not configured");
+  }
+
+  const transporter = getTransporter();
+  return transporter.sendMail({
+    from,
+    to: payload.to,
+    subject: payload.subject,
+    text: payload.text,
+    html: payload.html,
+  });
+}
+
+export function buildVerifyEmail(params: { appName: string; verifyUrl: string }) {
+  const subject = `Verify your ${params.appName} account`;
+  const text =
+    `Welcome to ${params.appName}.\n\n` +
+    `Verify your email to activate your account:\n${params.verifyUrl}\n\n` +
+    `If you did not request this, ignore this email.`;
+  const html =
+    `<p>Welcome to ${params.appName}.</p>` +
+    `<p>Verify your email to activate your account:</p>` +
+    `<p><a href="${params.verifyUrl}">${params.verifyUrl}</a></p>` +
+    `<p>If you did not request this, ignore this email.</p>`;
+
+  return { subject, text, html };
+}
+
+export function buildInviteEmail(params: {
+  appName: string;
+  orgName: string;
+  inviteUrl: string;
+}) {
+  const subject = `You're invited to ${params.orgName} on ${params.appName}`;
+  const text =
+    `You have been invited to join ${params.orgName} on ${params.appName}.\n\n` +
+    `Accept the invite here:\n${params.inviteUrl}\n\n` +
+    `If you did not expect this invite, you can ignore this email.`;
+  const html =
+    `<p>You have been invited to join ${params.orgName} on ${params.appName}.</p>` +
+    `<p>Accept the invite here:</p>` +
+    `<p><a href="${params.inviteUrl}">${params.inviteUrl}</a></p>` +
+    `<p>If you did not expect this invite, you can ignore this email.</p>`;
+
+  return { subject, text, html };
+}