server/api/weather.js

weather.js

const WEATHER = require("../models/Weather");

...

class Weather {
  ...
  
    /**
     * Saves the weather data using the zipcode as the unique identifier
     * If it already exists, replace, if not, then add.
     *
     * @param {number} zipCode The zipcode used to identify the document to upsert
     * @param {string} data Weather data to save/update
     * @return {JSON} The data response from the weather api data.
     */
    saveWeatherDataToMongo = async (zipCode, data) => {
        const filter = {
            zip: zipCode
        }

        const replace = {
            ...filter,
            ...data,
            data: Date.now()
        }
        await this.findOneReplace(filter, replace);
    }

    /**
     * Saves Weather data to MongoDb
     *
     * @param {number} zipCode The zipcode used as unique identifier to find the document from mongo
     * @return {JSON} The data response from the mongodb.
     */
    getWeatherDataFromMongo = async (zipCode) => {
        return WEATHER.findOne({zip: zipCode});
    }

    /**
     * If a document already exists with the filter, then replace, if not, add.
     *
     * @param {{zip: number}} filter The filter is the zipcode used as unique identifier to find the document from mongo
     * @return {JSON} The data response from the mongodb.
     */
    async findOneReplace(filter, replace) {
        await WEATHER.findOneAndReplace(filter, replace, {new: true, upsert: true});
    }
}