Backend/routes/errors.go

package routes

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

	"github.com/getsentry/sentry-go"
)

type ApiError struct {
	Code     uint8  `json:"code"`
	Text     string `json:"text"`
	HTTPCode uint16 `json:"-"`
}

var (
	WrongPassword = ApiError{
		Code:     1,
		Text:     "Wrong login and/or password!",
		HTTPCode: http.StatusBadRequest,
	}
	RecaptchaFailed = ApiError{
		Code:     2,
		Text:     "Recaptcha check failed!",
		HTTPCode: http.StatusBadRequest,
	}
	NoToken = ApiError{
		Code:     3,
		Text:     "No authorization token passed!",
		HTTPCode: http.StatusUnauthorized,
	}
	NoAccess = ApiError{
		Code:     4,
		Text:     "No Access!",
		HTTPCode: http.StatusForbidden,
	}
	AlreadyActivated = ApiError{
		Code:     5,
		Text:     "Account already activated!",
		HTTPCode: http.StatusBadRequest,
	}
	TokenExpired = ApiError{
		Code:     6,
		Text:     "Activate token has expired",
		HTTPCode: 400,
	}
	TooOftenGeneration = ApiError{
		Code:     7,
		Text:     "Too often generating links",
		HTTPCode: 400,
	}
	SamePassword = ApiError{
		Code:     8,
		Text:     "Same password",
		HTTPCode: 400,
	}
	RecaptchaNeeded = ApiError{
		Code:     9,
		Text:     "Recaptcha needed",
		HTTPCode: 0,
	}
	NotFound = ApiError{
		Code:     100,
		Text:     "Not found!",
		HTTPCode: http.StatusNotFound,
	}
	TooManyRequests = ApiError{
		Code:     101,
		Text:     "Too many requests",
		HTTPCode: 429,
	}
	Unauthorized = ApiError{
		Code:     102,
		Text:     "Unauthorized",
		HTTPCode: http.StatusUnauthorized,
	}
)

func (e ApiError) Marshall() string {
	data, err := json.Marshal(e)
	if err != nil {
		fmt.Println(err)
		sentry.CaptureException(err)
		return ""
	}
	return string(data)
}

func (e ApiError) Ferror(w http.ResponseWriter) {
	const baseError = `{"error":true,"error_data":%v}`
	if e.HTTPCode > 0 {
		w.WriteHeader(int(e.HTTPCode))
	}

	data, err := json.Marshal(e)
	if err != nil {
		fmt.Println(err)
		sentry.CaptureException(err)
	}

	_, err = fmt.Fprintf(w, baseError, string(data))
	if err != nil {
		fmt.Println(err)
		sentry.CaptureException(err)
	}
}