Make names case insensitive for API

storage/operator/filter.go

@@ -2,6 +2,7 @@ package operator
 
 import (
 	"fmt"
+	"strings"
 
 	"go.mongodb.org/mongo-driver/bson"
 )
@@ -15,6 +16,36 @@ func (re Regex) MarshalBSON() ([]byte, error) {
 	return filterMarshal("$regex", re.Key, re.Value)
 }
 
+type CaseInsensitives struct {
+	Key    string
+	Values []string
+}
+
+func (cis CaseInsensitives) MarshalBSON() ([]byte, error) {
+	values := cis.Values
+	if len(cis.Values) == 0 {
+		values = []string{".*"}
+	}
+	ci := CaseInsensitive{
+		Key:   cis.Key,
+		Value: fmt.Sprintf("^(%s)$", strings.Join(values, "|")),
+	}
+	return bson.Marshal(ci)
+}
+
+type CaseInsensitive struct {
+	Key   string
+	Value string
+}
+
+func (ci CaseInsensitive) MarshalBSON() ([]byte, error) {
+	value := ci.Value
+	if value == "" {
+		value = "^$"
+	}
+	return bson.Marshal(Regex{Key: ci.Key, Value: "(?i)" + ci.Value})
+}
+
 type FilterIn struct {
 	Key    string
 	Values []interface{}