mark2web/pkg/helper/webrequest.go

package helper

import (
	"encoding/json"
	"io/ioutil"
	"net/http"
	"strings"

	"gitbase.de/apairon/mark2web/pkg/logger"
)

// JSONWebRequest will GET a json object/array from a given URL
func JSONWebRequest(url string) interface{} {
	logger.Log.Noticef("requesting url via GET %s", url)

	resp, err := http.Get(url)
	if err != nil {
		logger.Log.Panicf("could not get url '%s': %s", url, err)
	}
	defer resp.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		logger.Log.Panicf("could not read body from url '%s': %s", url, err)
	}

	logger.Log.Debugf("output from url '%s':\n%s", url, string(body))

	if resp.StatusCode >= 400 {
		logger.Log.Panicf("bad status '%d - %s' from url '%s'", resp.StatusCode, resp.Status, url)
	}

	contentType := resp.Header.Get("Content-Type")

	if strings.Contains(contentType, "json") {

	} else {
		logger.Log.Panicf("is not json '%s' from url '%s'", contentType, url)
	}

	jsonMap := make(map[string]interface{})
	err = json.Unmarshal(body, &jsonMap)
	if err == nil {
		return jsonMap
	}

	jsonArrayMap := make([]map[string]interface{}, 0)
	err = json.Unmarshal(body, &jsonArrayMap)
	if err == nil {
		return jsonArrayMap
	}

	logger.Log.Panicf("could not read json from '%s': invalid type", url)
	return nil
}