aemet/main.go

package main

import (
	"encoding/json"
	"fmt"
	xj "github.com/basgys/goxml2json"
	"io"
	"log"
	"net/http"
	"strings"
)

type root struct {
	Base struct {
		Nombre     string `json:"nombre"`
		Prediccion struct {
			Dia []struct {
				Fecha       string `json:"-fecha"`
				Temperatura struct {
					Maxima string `json:"maxima"`
					Minima string `json:"minima"`
				}
			}
		}
	} `json:"root"`
}

func main() {
	jsonData := getJSON()
	textBytes := []byte(jsonData)
	aemetRequest := root{}
	err := json.Unmarshal(textBytes, &aemetRequest)
	if err != nil {
		log.Fatalf("Error occurred unmarshalling data: %v\n", err)
	}

	fmt.Println(aemetRequest.Base.Nombre)
	fmt.Println(aemetRequest.Base.Prediccion.Dia[0].Fecha)
	fmt.Printf("Temperatura máxima: %v°C\n", aemetRequest.Base.Prediccion.Dia[0].Temperatura.Maxima)
	fmt.Printf("Temperatura mínima: %v°C\n", aemetRequest.Base.Prediccion.Dia[0].Temperatura.Minima)
}

func getJSON() string {
	resp, err := http.Get("https://www.aemet.es/xml/municipios/localidad_46250.xml")
	if err != nil {
		log.Fatalf("Error occurred pulling data: %v\n", err)
	}

	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		log.Fatalf("Error occurred accessing website: %v\n", err)
	}

	data, err := io.ReadAll(resp.Body)
	if err != nil {
		log.Fatalf("Error occurred reading data: %v\n", err)
	}

	xml := strings.NewReader(string(data))
	json, err := xj.Convert(xml)
	if err != nil {
		log.Fatalf("Error occurred converting XML to JSON: %v\n", err)
	}

	return json.String()
}