package spec

import (
	"github.com/mitchellh/hashstructure/v2"
	"github.com/pkg/errors"
)

func Equals(a Spec, b Spec) (bool, error) {
	if a.SpecDefinitionName() != b.SpecDefinitionName() {
		return false, nil
	}

	if a.SpecDefinitionVersion() != b.SpecDefinitionVersion() {
		return false, nil
	}

	if a.SpecRevision() != b.SpecRevision() {
		return false, nil
	}

	hashA, err := hashstructure.Hash(a.SpecData(), hashstructure.FormatV2, nil)
	if err != nil {
		return false, errors.WithStack(err)
	}

	hashB, err := hashstructure.Hash(b.SpecData(), hashstructure.FormatV2, nil)
	if err != nil {
		return false, errors.WithStack(err)
	}

	return hashA == hashB, nil
}