@jvhaile/loopback4-helper/test.js

Helper components and tools for loopback 4.

const _ = require('lodash')

function deepMapObj(obj) {
    if (_.isArray(obj)) {
        return obj.map(deepMapObj);
    }
    if (_.isObject(obj)) {
        const newObj = {};
        Object.keys(obj).forEach(key => {
            newObj[key] = deepMapObj(obj[key]);
        });
        return newObj;
    }
    if (_.isString(obj) && obj.startsWith('$oid')) {
        try {
            return ObjectId(obj.slice(4));
        } catch (e) {
            return obj.slice(4);
        }
    }
    return obj;
}

ObjectId = require('mongodb').ObjectID;


const query=[
    {
        "$facet":{
            "recent":[
                { "$addFields": { "dmy": { "$dateToString": { "format": "%Y-%m-%d", "date": "$createdAt" } } } },

                {
                    "$group": {
                        "_id": { "createdAt" : "$dmy" },
                        "count" : { "$sum" : 1 }
                    }
                },
                {
                    "$project": {
                        "_id":0,
                        "createdAt":"$_id.createdAt",
                        "count":1
                    }
                },
                {
                    "$sort":{"createdAt":1}
                }
            ],
            "total":[
                {"$match":{"researchId":"$oid5fb93b3d3f89a635d824bee3"}},
                { "$group": { "_id": null, "total": { "$sum": 1 } } },
                { "$project": { "_id": 0 } }
            ]

        }
    },
    { "$addFields": { "sum": { "$arrayElemAt": [ "$total", 0 ] } } },
    {
        "$project":{
            "recent":1,
            "total":"$sum.total"
        }
    }
];
console.log(deepMapObj(query));