import nodemailer from "nodemailer";
import { render } from "@react-email/render";
import { InvitationEmail } from "./templates/invitation";

function createTransport() {
  const host = process.env.SMTP_HOST;
  if (!host) throw new Error("SMTP_HOST is not configured");

  return nodemailer.createTransport({
    host,
    port: parseInt(process.env.SMTP_PORT ?? "587"),
    secure: process.env.SMTP_SECURE === "true",
    auth:
      process.env.SMTP_USER && process.env.SMTP_PASS
        ? { user: process.env.SMTP_USER, pass: process.env.SMTP_PASS }
        : undefined,
  });
}

const FROM = () => process.env.EMAIL_FROM ?? "CubeAdmin <noreply@example.com>";

export async function sendMagicLinkEmail({
  email,
  url,
  token: _token,
}: {
  email: string;
  url: string;
  token: string;
}): Promise<void> {
  await createTransport().sendMail({
    from: FROM(),
    to: email,
    subject: "Your CubeAdmin sign-in link",
    html: `<p>Click the link below to sign in to CubeAdmin. This link expires in 1 hour.</p><p><a href="${url}">${url}</a></p>`,
    text: `Sign in to CubeAdmin: ${url}\n\nThis link expires in 1 hour.`,
  });
}

export async function sendInvitationEmail({
  to,
  invitedByName,
  inviteUrl,
  role,
}: {
  to: string;
  invitedByName: string;
  inviteUrl: string;
  role: string;
}): Promise<void> {
  const html = await render(InvitationEmail({ invitedByName, inviteUrl, role }));
  await createTransport().sendMail({
    from: FROM(),
    to,
    subject: `You've been invited to CubeAdmin`,
    html,
    text: `${invitedByName} invited you to CubeAdmin as ${role}.\n\nAccept your invitation: ${inviteUrl}\n\nThis link expires in 48 hours.`,
  });
}