Query the JCDecaux Vélib' API for a station Id

queryParisStations.go

package main
import (
  	"fmt"
		"io/ioutil"
		"log"
		"net/http"
		"encoding/json"
		"os"
)

func main() {
		stationId := os.Args[1]
		// You need to change that API KEY. Get it here: https://developer.jcdecaux.com/
		const yourApiKey = "ae55d65e9bbe2bf740c7fbd3915d583d3aa"
		res, err := http.Get("https://api.jcdecaux.com/vls/v1/stations/" + stationId + "?contract=Paris&apiKey=" + yourAp
iKey)
		if err != nil {
				log.Fatal(err)
		}
		stationsBytes, err := ioutil.ReadAll(res.Body)
		res.Body.Close()
		if err != nil {
				log.Fatal(err)
		}

		// We don't know the JSON "schema", let's get a generic way
		var jsonstations interface{}
		jsonerr := json.Unmarshal(stationsBytes, &jsonstations)
		if jsonerr != nil {
				log.Fatal(jsonerr)
		}
		m := jsonstations.(map[string]interface{})
		for k, v := range m {
				switch vv := v.(type) {
				case string:
						fmt.Println(k, "is string:", vv)
				case int:
						fmt.Println(k, "is int:", vv)
				case float64:
						fmt.Println(k, "is float64:", vv)
				case []interface{}:
						fmt.Println(k, "is an array:")
						for i, u := range vv {
								fmt.Println(i, u)
						}
				case map[string]interface{}:
						fmt.Println(k, "is a map:")
						for i, u := range vv {
								fmt.Println(i, u)
						}
				case bool:
						fmt.Println(k, "is a bool:", vv)
				default:
						fmt.Println(k, "is of a type I don't know how to handle")
				}
		}
}

Un petit coup de "go fmt" ne ferait pas de mal.