move everything to the same directory.

tags.go

@@ -0,0 +1,49 @@
+package nostr
+
+import (
+	"encoding/json"
+	"errors"
+)
+
+type Tags []Tag
+type Tag []interface{}
+
+func (t *Tags) Scan(src interface{}) error {
+	var jtags []byte = make([]byte, 0)
+
+	switch v := src.(type) {
+	case []byte:
+		jtags = v
+	case string:
+		jtags = []byte(v)
+	default:
+		return errors.New("couldn't scan tags, it's not a json string")
+	}
+
+	json.Unmarshal(jtags, &t)
+	return nil
+}
+
+func (tags Tags) ContainsAny(tagName string, values StringList) bool {
+	for _, tag := range tags {
+		if len(tag) < 2 {
+			continue
+		}
+
+		currentTagName, ok := tag[0].(string)
+		if !ok || currentTagName != tagName {
+			continue
+		}
+
+		currentTagValue, ok := tag[1].(string)
+		if !ok {
+			continue
+		}
+
+		if values.Contains(currentTagValue) {
+			return true
+		}
+	}
+
+	return false
+}