package imclient

import (
	"fmt"
	"net/http"
	"strings"
)

const sessionExpiredCode = 401

type APIError struct {
	StatusCode int
	Code       int
	Message    string
	Body       []byte
}

func (e *APIError) Error() string {
	if e == nil {
		return ""
	}
	if e.Code != 0 {
		return fmt.Sprintf("im api error: status=%d code=%d message=%s", e.StatusCode, e.Code, e.Message)
	}
	return fmt.Sprintf("im api error: status=%d message=%s", e.StatusCode, e.Message)
}

func IsSessionExpired(err error) bool {
	apiErr, ok := err.(*APIError)
	if !ok || apiErr == nil {
		return false
	}
	if apiErr.Code == sessionExpiredCode || apiErr.StatusCode == http.StatusUnauthorized {
		return true
	}
	msg := strings.ToLower(apiErr.Message)
	return strings.Contains(msg, "session has expired") ||
		strings.Contains(msg, "log in again") ||
		strings.Contains(msg, "token expired") ||
		strings.Contains(msg, "token invalid")
}