package attest

import (
	"context"
	"fmt"

	"github.com/docker/attest/attestation"
	"github.com/docker/attest/policy"
	v1 "github.com/google/go-containerregistry/pkg/v1"
	intoto "github.com/in-toto/in-toto-golang/in_toto"
)

type Outcome string

const (
	OutcomeSuccess  Outcome = "success"
	OutcomeFailure  Outcome = "failure"
	OutcomeNoPolicy Outcome = "no_policy"
)

func (o Outcome) StringForVSA() (string, error) {
	switch o {
	case OutcomeSuccess:
		return "PASSED", nil
	case OutcomeFailure:
		return "FAILED", nil
	default:
		return "", fmt.Errorf("unknown outcome: %s", o)
	}
}

type VerificationResult struct {
	Outcome           Outcome
	Policy            *policy.Policy
	Input             *policy.Input
	VSA               *intoto.Statement
	Violations        []policy.Violation
	SubjectDescriptor *v1.Descriptor
}

type wrappedResolver struct {
	imageName string
	attestation.Resolver
}

func (w *wrappedResolver) ImageName(_ context.Context) (string, error) {
	return w.imageName, nil
}