import type { ServerMethods } from '@rocket.chat/ddp-client';
import { Meteor } from 'meteor/meteor';

import { methodDeprecationLogger } from '../../lib/deprecationWarningLogger';
import { generateUsernameSuggestion } from '../../lib/users/getUsernameSuggestion';

declare module '@rocket.chat/ddp-client' {
	// eslint-disable-next-line @typescript-eslint/naming-convention
	interface ServerMethods {
		getUsernameSuggestion(): Promise<string | undefined>;
	}
}

Meteor.methods<ServerMethods>({
	async getUsernameSuggestion() {
		methodDeprecationLogger.method('getUsernameSuggestion', '9.0.0', '/v1/users.getUsernameSuggestion');
		const user = await Meteor.userAsync();

		if (!user) {
			throw new Meteor.Error('error-invalid-user', 'Invalid user', {
				method: 'getUsernameSuggestion',
			});
		}

		return generateUsernameSuggestion(user);
	},
});