feat: Add stat cmd

pkg/inventory/stat.go

@@ -0,0 +1,43 @@
+package inventory
+
+import (
+	"archive/tar"
+	"context"
+	"database/sql"
+	"strings"
+
+	"github.com/pojntfx/stfs/internal/converters"
+	models "github.com/pojntfx/stfs/internal/db/sqlite/models/metadata"
+	"github.com/pojntfx/stfs/pkg/config"
+)
+
+func Stat(
+	metadata config.MetadataConfig,
+
+	name string,
+
+	onHeader func(hdr *models.Header),
+) (*tar.Header, error) {
+	dbhdr, err := metadata.Metadata.GetHeader(context.Background(), name)
+	if err != nil {
+		if err == sql.ErrNoRows {
+			dbhdr, err = metadata.Metadata.GetHeader(context.Background(), strings.TrimSuffix(name, "/")+"/")
+			if err != nil {
+				return nil, err
+			}
+		} else {
+			return nil, err
+		}
+	}
+
+	hdr, err := converters.DBHeaderToTarHeader(dbhdr)
+	if err != nil {
+		return nil, err
+	}
+
+	if onHeader != nil {
+		onHeader(dbhdr)
+	}
+
+	return hdr, nil
+}