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

import { settings } from '../../../settings/server';
import { setEmail } from '../functions/setEmail';
import { RateLimiter } from '../lib';

declare module '@rocket.chat/ddp-client' {
	// eslint-disable-next-line @typescript-eslint/naming-convention
	interface ServerMethods {
		setEmail(email: string): string;
	}
}

export const setEmailFunction = async (email: string, user: Meteor.User | IUser) => {
	check(email, String);

	if (!settings.get('Accounts_AllowEmailChange')) {
		throw new Meteor.Error('error-action-not-allowed', 'Changing email is not allowed', {
			method: 'setEmail',
			action: 'Changing_email',
		});
	}

	if (user.emails?.[0] && user.emails[0].address === email) {
		return email;
	}

	if (!(await setEmail(user._id, email))) {
		throw new Meteor.Error('error-could-not-change-email', 'Could not change email', {
			method: 'setEmail',
		});
	}

	return email;
};

Meteor.methods<ServerMethods>({
	async setEmail(email) {
		const user = await Meteor.userAsync();

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

		return setEmailFunction(email, user);
	},
});

RateLimiter.limitMethod('setEmail', 1, 1000, {
	userId(/* userId*/) {
		return true;
	},
});