get_my/imports/api/systemConfig.js

import { Meteor } from 'meteor/meteor';
import { Mongo } from 'meteor/mongo';
import { check } from 'meteor/check';

export const SysConfig = new Mongo.Collection('sysConfig');

SysConfig.allow({
    insert: function(userId, doc){
        // if use id exists, allow insert
        return !!userId;
    },
});

Meteor.methods({
    async 'add.noSysAdminReg' (admReg, genReg) {
        check(admReg, Boolean);
        check(genReg, Boolean);

        if (!this.userId) {
            throw new Meteor.Error('Not able to change registration setting. Make sure you are logged in with valid system administrator credentials.');
        }

        const currConfig = async() => {
        let curr = await SysConfig.findOneAsync({});
        if (!curr) {
            try {
                return await SysConfig.insertAsync({
                    SysAdminReg: admReg,
                    dateAdded: new Date(),
                    allowReg: genReg,
                });
            } catch(error) {
                console.log("    ERROR trying to insert system config:");
                console.log(error.message);
                console.log(error.stack);
            } 
        } else {
            try {
                let configId = curr._id;
                const addNoSys = await Meteor.callAsync('edit.noSysAdminReg', configId, admReg, genReg);
                if (!addNoSys) {
                    // console.log("    Couldn't edit the system config.");
                } else {
                    // console.log("Success updating sys admin reg.");
                }
            } catch(error) {
                console.log("    ERROR trying to pull current system config:");
                console.log(error.message);
                console.log(error.stack);
            }
        }
    }
    currConfig();
    },
    async 'edit.noSysAdminReg' (configId, canReg, genReg) {
        check(canReg, Boolean);
        check(configId, String);
        check(genReg, Boolean);

        if (!this.userId) {
            throw new Meteor.Error('Not able to change registration setting. Make sure you are logged in with valid system administrator credentials.');
        }

        return await SysConfig.updateAsync({ _id: configId }, {
            $set: {
                SysAdminReg: canReg,
                allowReg: genReg,
                dateUpdated: new Date(),
            }
        });
    },
    async 'allow.updateInfo' (allowUpdate) {
        check(allowUpdate, Boolean);

        if (!this.userId) {
            throw new Meteor.Error('Not able to change system update notification settings. Make sure you are logged in with valid system administrator credentials.');
        }

        let curr = SysConfig.findOne({});

        let configId = curr._id;

        return await SysConfig.updateAsync({ _id: configId }, {
            $set: {
                allowUpdates: allowUpdate,
            }
        });
    },
});