package provisioner

import (
	"time"

	"github.com/pkg/errors"
)

// SCEP is the SCEP provisioner type, an entity that can authorize the
// SCEP provisioning flow
type SCEP struct {
	*base
	Type string `json:"type"`
	Name string `json:"name"`

	// ForceCN bool     `json:"forceCN,omitempty"`
	Options *Options `json:"options,omitempty"`
	Claims  *Claims  `json:"claims,omitempty"`
	claimer *Claimer
}

// GetID returns the provisioner unique identifier.
func (s SCEP) GetID() string {
	return "scep/" + s.Name
}

// GetName returns the name of the provisioner.
func (s *SCEP) GetName() string {
	return s.Name
}

// GetType returns the type of provisioner.
func (s *SCEP) GetType() Type {
	return TypeSCEP
}

// GetEncryptedKey returns the base provisioner encrypted key if it's defined.
func (s *SCEP) GetEncryptedKey() (string, string, bool) {
	return "", "", false
}

// GetTokenID returns the identifier of the token.
func (s *SCEP) GetTokenID(ott string) (string, error) {
	return "", errors.New("scep provisioner does not implement GetTokenID")
}

// GetOptions returns the configured provisioner options.
func (s *SCEP) GetOptions() *Options {
	return s.Options
}

// DefaultTLSCertDuration returns the default TLS cert duration enforced by
// the provisioner.
func (s *SCEP) DefaultTLSCertDuration() time.Duration {
	return s.claimer.DefaultTLSCertDuration()
}

// Init initializes and validates the fields of a JWK type.
func (s *SCEP) Init(config Config) (err error) {

	switch {
	case s.Type == "":
		return errors.New("provisioner type cannot be empty")
	case s.Name == "":
		return errors.New("provisioner name cannot be empty")
	}

	// Update claims with global ones
	if s.claimer, err = NewClaimer(s.Claims, config.Claims); err != nil {
		return err
	}

	return err
}

// Interface guards
var (
	_ Interface = (*SCEP)(nil)
	//_ scep.Provisioner = (*SCEP)(nil)
)