feat: basic authorization model

internal/spec/app/spec.go

@@ -33,7 +33,9 @@ func (s *Spec) SpecData() map[string]any {
 }
 
 func NewSpec() *Spec {
-	return &Spec{}
+	return &Spec{
+		Revision: -1,
+	}
 }
 
 var _ spec.Spec = &Spec{}

internal/spec/compare.go

@@ -0,0 +1,28 @@
+package spec
+
+import (
+	"github.com/mitchellh/hashstructure/v2"
+	"github.com/pkg/errors"
+)
+
+func Equals(a Spec, b Spec) (bool, error) {
+	if a.SpecName() != b.SpecName() {
+		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
+}

internal/spec/gateway/spec.go

@@ -32,6 +32,7 @@ func (s *Spec) SpecData() map[string]any {
 
 func NewSpec() *Spec {
 	return &Spec{
+		Revision: -1,
 		Gateways: make(map[ID]GatewayEntry),
 	}
 }

internal/spec/uci/spec.go

@@ -35,6 +35,7 @@ func (s *Spec) SpecData() map[string]any {
 
 func NewSpec() *Spec {
 	return &Spec{
+		Revision:           -1,
 		PostImportCommands: make([]*UCIPostImportCommand, 0),
 	}
 }