helpful http

http_helpful.go

package core

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

type ResponseSuccess struct {
	Code string      `json:"code"`
	Data interface{} `json:"data"`
}

type ResponseError struct {
	Code           string `json:"error_code"`
	Description    string `json:"error_description"`
	DevDescription string `json:"dev_description"`
}

func securityHandler(h http.HandlerFunc) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {

		h.ServeHTTP(w, r)
		return
	}
}

func OutputErrorJSON(w http.ResponseWriter, code, message, devMessage string) error {
	return OutputJSON(w, ResponseError{code, message, devMessage})
}

func OutputJSON(w http.ResponseWriter, data interface{}) error {
	w.Header().Set("Content-Type", "application/json")

	encoder := json.NewEncoder(w)
	err := encoder.Encode(data)
	if err != nil {
		return err
	}
	return nil
}

func InputBytes(r *http.Request) ([]byte, error) {
	if err := r.ParseForm(); err != nil {

		return []byte{}, ErrInvalidData
	}

	return ioutil.ReadAll(r.Body)
}

func InputJSON(w http.ResponseWriter, r *http.Request, data interface{}) error {
	if err := r.ParseForm(); err != nil {
		w.WriteHeader(400)
		OutputJSON(w, &ResponseError{CodeInvalidData, "", "Ivalid data"})
		return ErrInvalidData
	}

	decoder := json.NewDecoder(r.Body)
	err := decoder.Decode(data)
	if err != nil {
		return err
	}
	return nil
}