Added missing email API module.

src/web/emails.js

@@ -0,0 +1,26 @@
+import { listEmailTemplates } from '../email-templates.js';
+import { sendTestEmail } from '../email.js';
+import { HttpError } from '../errors.js';
+
+const emailPattern = /^[^\s@]+@[^\s@][^\s.@]*\.[^\s@]+$/;
+
+export async function sendTestEmailApi(req, res) {
+	// same access as the admin preview page
+	if (!req.user || req.user.role === 'user') {
+		throw new HttpError('You are not allowed to send test e-mails', 404);
+	}
+
+	if (!listEmailTemplates().includes(req.params.template)) {
+		throw new HttpError(`E-mail template '${req.params.template}' does not exist`, 404);
+	}
+
+	const to = typeof req.body?.to === 'string' ? req.body.to.trim() : null;
+
+	if (!to || !emailPattern.test(to)) {
+		throw new HttpError('Please provide a valid e-mail address', 400);
+	}
+
+	await sendTestEmail(req.params.template, to);
+
+	res.status(204).send();
+}