cmd/dynamo-browse/main.go

@@ -110,7 +110,7 @@ func main() {
 
 	tableService := tables.NewService(dynamoProvider, settingStore)
 	workspaceService := viewsnapshot.NewService(resultSetSnapshotStore)
-	itemRendererService := itemrenderer.NewService(uiStyles.ItemView.FieldType, uiStyles.ItemView.MetaInfo)
+	itemRendererService := itemrenderer.NewService(nil, uiStyles.ItemView.FieldType, uiStyles.ItemView.MetaInfo)
 	jobsService := jobs.NewService(eventBus)
 	inputHistoryService := inputhistory.New(inputHistoryStore)
 

internal/dynamo-browse/models/attrpath.go

@@ -0,0 +1,6 @@
+package models
+
+type AttrPathNode struct {
+	Key    string
+	Parent *AttrPathNode
+}

internal/dynamo-browse/services/itemrenderer/service.go

@@ -2,18 +2,25 @@ package itemrenderer
 
 import (
 	"fmt"
-	"lmika.dev/cmd/dynamo-browse/internal/dynamo-browse/models"
-	"lmika.dev/cmd/dynamo-browse/internal/dynamo-browse/models/itemrender"
 	"io"
 	"text/tabwriter"
+
+	"lmika.dev/cmd/dynamo-browse/internal/dynamo-browse/models"
+	"lmika.dev/cmd/dynamo-browse/internal/dynamo-browse/models/itemrender"
 )
 
 type Service struct {
-	styles styleRenderer
+	annotations Annotation
+	styles      styleRenderer
 }
 
-func NewService(fileTypeStyle StyleRenderer, metaInfoStyle StyleRenderer) *Service {
+func NewService(
+	annotations Annotation,
+	fileTypeStyle StyleRenderer,
+	metaInfoStyle StyleRenderer,
+) *Service {
 	return &Service{
+		annotations: testAnnotation{},
 		styles: styleRenderer{
 			fileTypeRenderer: fileTypeStyle,
 			metaInfoRenderer: metaInfoStyle,
@@ -33,25 +40,47 @@ func (s *Service) RenderItem(w io.Writer, item models.Item, resultSet *models.Re
 	for _, colName := range resultSet.Columns() {
 		seenColumns[colName] = struct{}{}
 		if r := itemrender.ToRenderer(item[colName]); r != nil {
-			s.renderItem(tabWriter, "", colName, r, styles)
+			p := models.AttrPathNode{Key: colName}
+			s.renderItem(tabWriter, resultSet, item, p, "", r, styles)
 		}
 	}
 	for k, _ := range item {
 		if _, seen := seenColumns[k]; !seen {
 			if r := itemrender.ToRenderer(item[k]); r != nil {
-				s.renderItem(tabWriter, "", k, r, styles)
+				p := models.AttrPathNode{Key: k}
+				s.renderItem(tabWriter, resultSet, item, p, "", r, styles)
 			}
 		}
 	}
 	tabWriter.Flush()
 }
 
-func (m *Service) renderItem(w io.Writer, prefix string, name string, r itemrender.Renderer, sr styleRenderer) {
-	fmt.Fprintf(w, "%s%v\t%s\t%s%s\n",
-		prefix, name, sr.fileTypeRenderer.Render(r.TypeName()), r.StringValue(), sr.metaInfoRenderer.Render(r.MetaInfo()))
+func (m *Service) renderItem(
+	w io.Writer,
+	resultSet *models.ResultSet,
+	item models.Item,
+	path models.AttrPathNode,
+	prefix string,
+	r itemrender.Renderer,
+	sr styleRenderer,
+) {
+	fmt.Fprint(w, prefix)
+	fmt.Fprint(w, path.Key)
+	fmt.Fprint(w, "\t")
+	fmt.Fprint(w, sr.fileTypeRenderer.Render(r.TypeName()))
+	fmt.Fprint(w, "\t")
+	fmt.Fprint(w, r.StringValue())
+	fmt.Fprint(w, sr.metaInfoRenderer.Render(r.MetaInfo()))
+	if m.annotations != nil {
+		fmt.Fprint(w, "  ")
+		fmt.Fprint(w, sr.metaInfoRenderer.Render(m.annotations.AnnotateAttribute(resultSet, item, path)))
+	}
+	fmt.Fprint(w, "\n")
+
 	if subitems := r.SubItems(); len(subitems) > 0 {
 		for _, si := range subitems {
-			m.renderItem(w, prefix+"  ", si.Key, si.Value, sr)
+			p := models.AttrPathNode{Key: si.Key, Parent: &path}
+			m.renderItem(w, resultSet, item, p, prefix+"  ", si.Value, sr)
 		}
 	}
 }
@@ -60,3 +89,13 @@ type styleRenderer struct {
 	fileTypeRenderer StyleRenderer
 	metaInfoRenderer StyleRenderer
 }
+
+type Annotation interface {
+	AnnotateAttribute(rs *models.ResultSet, item models.Item, path models.AttrPathNode) string
+}
+
+type testAnnotation struct{}
+
+func (t testAnnotation) AnnotateAttribute(rs *models.ResultSet, item models.Item, path models.AttrPathNode) string {
+	return "( annotation of " + path.Key + " )"
+}