Rocket.Chat/ee/app/settings/server/settings.ts

import { Meteor } from 'meteor/meteor';

import { settings } from '../../../../app/settings/server/functions/settings';
import { isEnterprise, hasLicense, onValidateLicenses } from '../../license/server/license';
import SettingsModel from '../../../../app/models/server/models/Settings';
import { ISetting, SettingValue } from '../../../../definition/ISetting';
import { use } from '../../../../app/settings/server/Middleware';
import { SettingsEvents } from '../../../../app/settings/server';

export function changeSettingValue(record: ISetting): SettingValue {
	if (!record.enterprise) {
		return record.value;
	}

	if (!isEnterprise()) {
		return record.invalidValue;
	}

	if (!record.modules?.length) {
		return record.invalidValue;
	}

	for (const moduleName of record.modules) {
		if (!hasLicense(moduleName)) {
			return record.invalidValue;
		}
	}

	return record.value;
}

settings.set = use(settings.set, (context, next) => {
	const [record] = context;

	if (!record.enterprise) {
		return next(...context);
	}
	const value = changeSettingValue(record);

	return next({ ...record, value });
});

SettingsEvents.on('fetch-settings', (settings: Array<ISetting>): void => {
	for (const setting of settings) {
		const changedValue = changeSettingValue(setting);
		if (changedValue === undefined) {
			continue;
		}
		setting.value = changedValue;
	}
});

function updateSettings(): void {
	const enterpriseSettings = SettingsModel.findEnterpriseSettings();

	enterpriseSettings.forEach((record: ISetting) => settings.set(record));
}

Meteor.startup(() => {
	updateSettings();

	onValidateLicenses(updateSettings);
});