aemet/cmd/clientFunc.go

package cmd

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"`
					Dato   []struct {
						Valor string `json:"#content"`
						Hora  string `json:"-hora"`
					}
				}
				Sens_Termica struct {
					Maxima string `json:"maxima"`
					Minima string `json:"minima"`
					Dato   []struct {
						Valor string `json:"#content"`
						Hora  string `json:"-hora"`
					}
				}
			}
		}
	} `json:"root"`
}

func client() {
	jsonData, err := getJSON()
	if err != nil {
		log.Fatal(err)
	}
	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() (s string, err error) {
	client := &http.Client{}
	req, err := http.NewRequest("GET", "https://www.aemet.es/xml/municipios/localidad_46250.xml", nil)
	if err != nil {
		e := fmt.Errorf("Error occurred pulling data: %v\n", err)
		return "", e
	}
	req.Header.Set("User-Agent", "AEMET-Client/1.0 (https://git.bulgariu.xyz/raul/aemet)")

	resp, err := client.Do(req)

	if err != nil {
		e := fmt.Errorf("Error occurred pulling data: %v\n", err)
		return "", e
	}

	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		e := fmt.Errorf("Error occurred accessing upstream website: %v\n", resp.Status)
		return "", e
	}

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

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

	return json.String(), nil
}