package alwaysreject

import (
	"context"

	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
)

const Key = "generic/always_reject"
const ReasonCode = "always_reject"

var _ contracts.Validator = (*Validator)(nil)

type Validator struct{}

func New() *Validator {
	return &Validator{}
}

func (v *Validator) Name() string {
	return Key
}

func (v *Validator) ExecutionClass() contracts.ExecutionClass {
	return contracts.ExecutionClassDeterministic
}

func (v *Validator) Validate(ctx context.Context, req contracts.ValidationRequest) (contracts.ValidationResult, error) {
	return contracts.ValidationResult{
		Approved:   false,
		ReasonCode: ReasonCode,
		Message:    "output rejected by always-reject validator",
	}, nil
}

func Spec() pipeline.ValidatorSpec {
	return pipeline.ValidatorSpec{
		Key:            Key,
		ExecutionClass: contracts.ExecutionClassDeterministic,
	}
}

func Register(registry *pipeline.ValidatorRegistry) error {
	return registry.RegisterWithSpec(Spec(), func() (contracts.Validator, error) {
		return New(), nil
	})
}