FunctionProject/api/assets/functions/main/weatherRequest.js

const axios = require('axios')
const Queue = require('smart-request-balancer')
const errorHandling = require('../../utils/errorHandling')
const { requiredFields } = require('../../config/errors')
const { WEATHER_API_KEY } = require('../../config/config')
const dateTimeUTC = require('../secondary/dateTimeManagement')
const capitalize = require('../secondary/capitalize')

const queue = new Queue({
  /*
        rate: number of requests
            per
        limit: number of seconds
    */
  rules: {
    weatherRequest: {
      rate: 50,
      limit: 60,
      priority: 1
    }
  }
})

/* OUTPUTS */
module.exports = ({ res, next }, argsObject) => {
  let { cityName } = argsObject

  // S'il n'y a pas les champs obligatoire
  if (!(cityName)) {
    return errorHandling(next, requiredFields)
  }

  cityName = cityName.split(' ').join('+')

  // Récupère les données météo grâce à l'API : openweathermap.org. (→ avec limite de 50 requêtes par minute)
  queue.request(() => {
    axios.get(`https://api.openweathermap.org/data/2.5/weather?q=${cityName}&lang=fr&units=metric&appid=${WEATHER_API_KEY}`)
      .then((response) => {
        const json = response.data
        const showDateTimeValue = dateTimeUTC((json.timezone / 60 / 60).toString()).showDateTimeValue
        const resultHTML = `<p>🌎 Position : <a href="https://www.google.com/maps/search/?api=1&query=${json.coord.lat},${json.coord.lon}" rel="noopener noreferrer" target="_blank">${json.name}, ${json.sys.country}</a><br/>⏰ Date et heure : ${showDateTimeValue} <br/>☁️ Météo : ${capitalize(json.weather[0].description)}<br/>🌡️ Température : ${json.main.temp} °C<br/> 💧 Humidité : ${json.main.humidity}% <br/> <img src="https://openweathermap.org/img/wn/${json.weather[0].icon}@2x.png"/></p>`
        return res.status(200).json({ result: json, resultHTML })
      })
      .catch(() => errorHandling(next, { message: "La ville n'existe pas (dans l'API de openweathermap.org).", statusCode: 404 }))
  }, 'everyone', 'weatherRequest')
}