Added account update form and e-mail verification.

src/email.js

@@ -0,0 +1,79 @@
+import config from 'config';
+import { Resend } from 'resend';
+
+import { emailTemplates } from './email-templates.js';
+import initLogger from './logger.js';
+
+const logger = initLogger();
+
+const resend = (() => {
+	if (config.email.enabled) {
+		try {
+			return new Resend(config.email.apiKey);
+		}
+		catch (error) {
+			logger.error(`Failed to initialize Resend: ${error.message}`);
+		}
+	}
+
+	return null;
+})();
+
+export async function renderEmail(template, { to, subject, props }) {
+	const { html, text } = await emailTemplates.render(`${template}.vue`, { props });
+
+	return {
+		from: config.email.from,
+		to,
+		subject,
+		html,
+		text,
+	};
+}
+
+// always batches, even for a single item: Resend's batch endpoint accepts a batch of one,
+// and passing batchValidation: 'permissive' means one bad recipient among many doesn't
+// sink the rest of the batch (the default 'strict' mode fails the whole call instead)
+export async function sendEmails(items) {
+	if (!config.email.enabled) {
+		return null;
+	}
+
+	if (!resend) {
+		logger.warn('E-mails are enabled, but Resend is not initialized');
+		return null;
+	}
+
+	const rendered = await Promise.all(items.map(async (item) => {
+		try {
+			return await renderEmail(item.template, item);
+		}
+		catch (error) {
+			logger.error(`Failed to render '${item.template}' e-mail for '${item.to}': ${error.message} — ${JSON.stringify(item.props)}`);
+			return null;
+		}
+	}));
+
+	const sentItems = items.filter((item, index) => rendered[index]);
+	const emails = rendered.filter(Boolean);
+
+	if (emails.length === 0) {
+		return null;
+	}
+
+	const { data, error } = await resend.batch.send(emails, { batchValidation: 'permissive' });
+
+	if (error) {
+		logger.error(`Failed to send ${emails.length} e-mail(s) (${error.statusCode} ${error.name}): ${error.message}`);
+		return null;
+	}
+
+	data.errors?.forEach(({ index, message }) => {
+		const item = sentItems[index];
+		logger.error(`Failed to send '${item.template}' e-mail to '${item.to}': ${message} — ${JSON.stringify(item.props)}`);
+	});
+
+	logger.info(`Sent ${emails.length - (data.errors?.length || 0)}/${items.length} e-mail(s)`);
+
+	return data;
+}