package client

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

type Error struct {
	Err    string `json:"error"`
	Status int    `json:"status"`
}

func (e Error) Error() string {
	return e.Err
}

func (e Error) Is(target error) bool {
	return e.Err == target.Error()
}

func decodeResp(resp *http.Response, v interface{}) error {
	if resp.Body == nil {
		return nil
	}
	defer resp.Body.Close()
	if resp.StatusCode == 200 {
		if v == nil {
			return nil
		}
		return json.NewDecoder(resp.Body).Decode(&v)
	}
	var e Error
	err := json.NewDecoder(resp.Body).Decode(&e)
	if err != nil {
		return err
	}
	if resp.StatusCode >= 400 && resp.StatusCode <= 599 {
		return e
	}
	return nil
}