update backoffice

cmd/backoffice/fileserver.go

@@ -11,6 +11,9 @@ import (
 	"sort"
 	"strconv"
 	"strings"
+	"time"
+
+	"git.tornberg.me/go-cart-actor/pkg/cart"
 )
 
 type FileServer struct {
@@ -122,6 +125,12 @@ func (fs *FileServer) CartHandler(w http.ResponseWriter, r *http.Request) {
 		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "invalid id"})
 		return
 	}
+	// reconstruct state from event log if present
+	grain := cart.NewCartGrain(id, time.Now())
+	if globalDisk != nil {
+		_ = globalDisk.LoadEvents(id, grain)
+	}
+
 	path := filepath.Join(fs.dataDir, fmt.Sprintf("%d.events.log", id))
 	info, err := os.Stat(path)
 	if err != nil {
@@ -139,6 +148,7 @@ func (fs *FileServer) CartHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	writeJSON(w, http.StatusOK, map[string]any{
 		"id":     id,
+		"state":  grain,
 		"rawLog": lines,
 		"meta": map[string]any{
 			"size":     info.Size(),