Remove auth/db stack, migrate contact email flow, and update for Next 16

src/server/mail.ts

@@ -0,0 +1,62 @@
+import "server-only";
+
+import * as nodemailer from "nodemailer";
+
+import { env } from "~/env";
+
+const smtpConfigured = Boolean(env.SMTP_HOST && env.CONTACT_TO);
+
+const transporter = smtpConfigured
+  ? nodemailer.createTransport({
+      host: env.SMTP_HOST,
+      port: env.SMTP_PORT ?? 587,
+      secure: env.SMTP_SECURE === "true",
+      auth:
+        env.SMTP_USER && env.SMTP_PASS
+          ? { user: env.SMTP_USER, pass: env.SMTP_PASS }
+          : undefined,
+    })
+  : null;
+
+export type ContactMessage = {
+  name: string;
+  email: string;
+  company?: string | null;
+  message: string;
+};
+
+/**
+ * Forward a contact submission to the CONTACT_TO inbox over SMTP.
+ * If SMTP isn't configured, logs the submission instead so local dev still works.
+ */
+export async function sendContactEmail(input: ContactMessage): Promise<void> {
+  const subject = `New inquiry from ${input.name}${
+    input.company ? ` (${input.company})` : ""
+  }`;
+
+  const text = [
+    `Name:    ${input.name}`,
+    `Email:   ${input.email}`,
+    input.company ? `Company: ${input.company}` : null,
+    "",
+    input.message,
+  ]
+    .filter((line) => line !== null)
+    .join("\n");
+
+  if (!transporter || !env.CONTACT_TO) {
+    console.warn(
+      `[contact] SMTP not configured — submission not emailed.\n${subject}\n${text}`,
+    );
+    return;
+  }
+
+  await transporter.sendMail({
+    from: env.CONTACT_FROM ?? env.SMTP_USER ?? "no-reply@hadlock.tech",
+    to: env.CONTACT_TO,
+    // Reply goes straight to the person who filled out the form.
+    replyTo: `${input.name} <${input.email}>`,
+    subject,
+    text,
+  });
+}