package token

import (
	"errors"
	"time"

	"github.com/unistack-org/micro/v3/auth"
)

var (
	// ErrNotFound is returned when a token cannot be found
	ErrNotFound = errors.New("token not found")
	// ErrEncodingToken is returned when the service encounters an error during encoding
	ErrEncodingToken = errors.New("error encoding the token")
	// ErrInvalidToken is returned when the token provided is not valid
	ErrInvalidToken = errors.New("invalid token provided")
)

// Provider generates and inspects tokens
type Provider interface {
	Generate(account *auth.Account, opts ...GenerateOption) (*Token, error)
	Inspect(token string) (*auth.Account, error)
	String() string
}

// Token holds the auth token
type Token struct {
	// The actual token
	Token string `json:"token"`
	// Time of token creation
	Created time.Time `json:"created"`
	// Time of token expiry
	Expiry time.Time `json:"expiry"`
}