Rocket.Chat/app/nextcloud/server/startup.js

import { settings } from '../../settings';

settings.addGroup('OAuth', function() {
	this.section('Nextcloud', function() {
		const enableQuery = {
			_id: 'Accounts_OAuth_Nextcloud',
			value: true,
		};

		this.add('Accounts_OAuth_Nextcloud', false, { type: 'boolean', public: true });
		this.add('Accounts_OAuth_Nextcloud_URL', '', { type: 'string', enableQuery, public: true });
		this.add('Accounts_OAuth_Nextcloud_id', '', { type: 'string', enableQuery });
		this.add('Accounts_OAuth_Nextcloud_secret', '', { type: 'string', enableQuery });
		this.add('Accounts_OAuth_Nextcloud_callback_url', '_oauth/nextcloud', { type: 'relativeUrl', readonly: true, force: true, enableQuery });
		this.add('Accounts_OAuth_Nextcloud_button_label_text', 'Nextcloud', { type: 'string', public: true, i18nLabel: 'Accounts_OAuth_Custom_Button_Label_Text', persistent: true });
		this.add('Accounts_OAuth_Nextcloud_button_label_color', '#ffffff', { type: 'string', public: true, i18nLabel: 'Accounts_OAuth_Custom_Button_Label_Color', persistent: true });
		this.add('Accounts_OAuth_Nextcloud_button_color', '#0082c9', { type: 'string', public: true, i18nLabel: 'Accounts_OAuth_Custom_Button_Color', persistent: true });
	});
});