Refactor

src/remote/resolve-user.ts

@@ -0,0 +1,26 @@
+import { toUnicode, toASCII } from 'punycode';
+import User from '../models/user';
+import resolvePerson from './activitypub/resolve-person';
+import webFinger from './webfinger';
+
+export default async (username, host, option) => {
+	const usernameLower = username.toLowerCase();
+	const hostLowerAscii = toASCII(host).toLowerCase();
+	const hostLower = toUnicode(hostLowerAscii);
+
+	let user = await User.findOne({ usernameLower, hostLower }, option);
+
+	if (user === null) {
+		const acctLower = `${usernameLower}@${hostLowerAscii}`;
+
+		const finger = await webFinger(acctLower, acctLower);
+		const self = finger.links.find(link => link.rel && link.rel.toLowerCase() === 'self');
+		if (!self) {
+			throw new Error();
+		}
+
+		user = await resolvePerson(self.href, usernameLower, hostLower, acctLower);
+	}
+
+	return user;
+};