add document state transformer interface

internal/folio/declaration.go

@@ -150,7 +150,7 @@ func (d *Declaration) Resource() data.Resource {
 	return d.Attributes
 }
 
-func (d *Declaration) Apply() (result error) {
+func (d *Declaration) Apply(stateTransition string) (result error) {
 	defer func() {
 		if r := recover(); r != nil {
 			slog.Info("Declaration.Apply()", "error", r, "stacktrace", string(debug.Stack()))
@@ -161,9 +161,13 @@ func (d *Declaration) Apply() (result error) {
 		}
 	}()
 
+	if stateTransition == "" {
+		stateTransition = d.Transition
+	}
+
 	stater := d.Attributes.StateMachine()
 	slog.Info("Declaration.Apply()", "machine", stater, "machine.state", stater.CurrentState(), "uri", d.Attributes.URI())
-	switch d.Transition {
+	switch stateTransition {
 	case "construct":
 		if doc, ok := DocumentRegistry.DeclarationMap[d]; ok {
 			d.SetDocument(doc)

internal/folio/declaration_test.go

@@ -9,7 +9,6 @@ _	"encoding/json"
 	"github.com/stretchr/testify/assert"
 _	"log"
 _	"os"
-	"path/filepath"
 _	"decl/internal/types"
 	"decl/internal/codec"
 	"testing"
@@ -18,7 +17,7 @@ _	"decl/internal/types"
 /*
 func TestYamlLoadDecl(t *testing.T) {
 
-	file := filepath.Join(TempDir, "fooread.txt")
+	file := TempDir.FilePath("fooread.txt")
 
 	resourceAttributes := make(map[string]any)
 	decl := fmt.Sprintf(`
@@ -44,7 +43,7 @@ func TestNewResourceDeclaration(t *testing.T) {
 }
 
 func TestNewResourceDeclarationType(t *testing.T) {
-	file := filepath.Join(TempDir, "fooread.txt")
+	file := TempDir.FilePath("fooread.txt")
 
 	decl := fmt.Sprintf(`
     type: foo
@@ -61,6 +60,35 @@ func TestNewResourceDeclarationType(t *testing.T) {
 	assert.Equal(t, TypeName("foo"), resourceDeclaration.Type)
 	assert.NotNil(t, resourceDeclaration.Attributes)
 }
+
+/* XXX
+func TestEventTypeLoad(t *testing.T) {
+	file := TempDir.FilePath("fooread.txt")
+
+	fooTemplate := `
+    type: foo
+    on:
+      load: |
+        %s
+    attributes:
+      name: "%s"
+`
+
+	for _, v := range []struct{ decl string; expected string } {
+		{ decl: fmt.Sprintf(fooTemplate, "print('Hello world!')", file), expected: "" },
+		{ decl: fmt.Sprintf(fooTemplate, "print('Hello world!') fail", file), expected: "Lua error: luaL_loadstring(): failed loading, [string \"print('Hello world!') fail...\"]:2: '=' expected near '<eof>', return code: 3" },
+	} {
+		resourceDeclaration := NewDeclaration()
+		resourceDeclaration.ResourceTypes = TestResourceTypes
+		assert.NotNil(t, resourceDeclaration)
+	
+		e := resourceDeclaration.LoadString(v.decl, codec.FormatYaml)
+		assert.Nil(t, e)
+		assert.Equal(t, v.expected, resourceDeclaration.Error)
+	}
+}
+*/
+
 /*
 func TestDeclarationNewResource(t *testing.T) {
 	resourceDeclaration := NewDeclaration()

internal/folio/document.go

@@ -268,16 +268,13 @@ func (d *Document) Apply(state string) error {
 		if idx < 0 { idx = - idx }
 
 		slog.Info("Document.Apply() applying resource", "index", idx, "uri", d.ResourceDeclarations[idx].Resource().URI(), "resource", d.ResourceDeclarations[idx].Resource())
-		if state != "" {
-			d.ResourceDeclarations[idx].Transition = state
-		}
 		d.ResourceDeclarations[idx].SetConfig(d.config)
 
 		slog.Info("Document.Apply() applying resource", "index", idx, "uri", d.ResourceDeclarations[idx].Resource().URI(), "resource", d.ResourceDeclarations[idx].Resource())
 
 		if d.ResourceDeclarations[idx].Requires.Check() {
 
-			if e := d.ResourceDeclarations[idx].Apply(); e != nil {
+			if e := d.ResourceDeclarations[idx].Apply(state); e != nil {
 				slog.Error("Document.Apply() error applying resource", "index", idx, "uri", d.ResourceDeclarations[idx].Resource().URI())
 
 				d.ResourceDeclarations[idx].Error = e.Error()
@@ -560,8 +557,7 @@ func (d *Document) UnmarshalYAML(value *yaml.Node) error {
 	}
 	d.assignConfigurationsDocument()
 	d.assignResourcesDocument()
-	d.loadImports()
-	return nil
+	return d.loadImports()
 }
 
 func (d *Document) UnmarshalJSON(data []byte) error {
@@ -572,7 +568,6 @@ func (d *Document) UnmarshalJSON(data []byte) error {
 	}
 	d.assignConfigurationsDocument()
 	d.assignResourcesDocument()
-	d.loadImports()
-	return nil
+	return d.loadImports()
 }
 

internal/folio/folio_test.go

@@ -20,8 +20,7 @@ var ProcessTestUserName string
 var ProcessTestGroupName string
 
 func TestMain(m *testing.M) {
-	var err error
-	err = TempDir.Create()
+	err := TempDir.Create()
 	if err != nil || TempDir == "" {
 		log.Fatal(err)
 	}