refactor: update company registration flow and email handling; switch to zod for validation

lib/services/mailer.service.ts

@@ -0,0 +1,42 @@
+'use server';
+
+import { getMailer } from '@kit/mailers';
+import { enhanceAction } from '@kit/next/actions';
+
+import { CompanySubmitData } from '../types/company';
+import { emailSchema } from '../validations/email.schema';
+
+export const sendCompanyOfferEmail = async (
+  data: CompanySubmitData,
+  language: string,
+) => {
+  const { renderCompanyOfferEmail } = await import('@kit/email-templates');
+  const { html, subject, to } = await renderCompanyOfferEmail({
+    language,
+    companyData: data,
+  });
+
+  await sendEmail({
+    subject,
+    html,
+    to,
+  });
+};
+
+export const sendEmail = enhanceAction(
+  async ({ subject, html, to }) => {
+    const mailer = await getMailer();
+
+    await mailer.sendEmail({
+      to,
+      subject,
+      html,
+    });
+
+    return {};
+  },
+  {
+    schema: emailSchema,
+    auth: false,
+  },
+);