first working version

pkg/index/id.go

@@ -0,0 +1,12 @@
+package index
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+)
+
+func newID() string {
+	b := make([]byte, 16)
+	rand.Read(b)
+	return hex.EncodeToString(b)
+}

pkg/index/index.go

@@ -51,15 +51,17 @@ func (i *Index) Close() error {
 	return i.i.Close()
 }
 
-func (i *Index) Add(id, text, docType string) error {
-	doc, _ := i.i.Document(id)
-	if doc != nil {
-		err := i.Delete(id)
-		if err != nil {
-			return err
+func (i *Index) Add(text, docType string) (id string, err error) {
+	id = newID()
+	for {
+		doc, _ := i.i.Document(id)
+		if doc == nil {
+			break
 		}
+		id = newID()
 	}
-	return i.i.Index(id, indexDocument{text, core.Now(), docType})
+	err = i.i.Index(id, indexDocument{text, core.Now(), docType})
+	return
 }
 
 func (i *Index) Delete(id string) error {