Make names case insensitive for API

storage/graph.go

@@ -2,7 +2,6 @@ package storage
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"local/dndex/config"
 	"local/dndex/storage/driver"
@@ -36,12 +35,7 @@ func (g Graph) Search(ctx context.Context, namespace string, nameContains string
 }
 
 func (g Graph) ListCaseInsensitive(ctx context.Context, namespace string, from ...string) ([]entity.One, error) {
-	if len(from) == 0 {
-		return g.List(ctx, namespace)
-	}
-	pattern := strings.Join(from, "|")
-	pattern = "^(?i)(" + pattern + ")"
-	filter := operator.Regex{Key: entity.Name, Value: pattern}
+	filter := operator.CaseInsensitives{Key: entity.Name, Values: from}
 	return g.find(ctx, namespace, filter)
 }
 
@@ -74,7 +68,7 @@ func (g Graph) Insert(ctx context.Context, namespace string, one entity.One) err
 	if ones, err := g.ListCaseInsensitive(ctx, namespace, one.Name); err != nil {
 		return err
 	} else if len(ones) > 0 {
-		return errors.New("collision on primary key when case insensitive")
+		return fmt.Errorf("collision on primary key when case insensitive: cannot create %q because %+v exists", one.Name, ones)
 	}
 	return g.driver.Insert(ctx, namespace, one)
 }