kind-0 metadata helper type.

metadata.go

@@ -0,0 +1,31 @@
+package nostr
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+type ProfileMetadata struct {
+	Name    string `json:"name"`
+	About   string `json:"about"`
+	Picture string `json:"picture"`
+	NIP05   string `json:"nip05"`
+}
+
+func ParseMetadata(event Event) (*ProfileMetadata, error) {
+	if event.Kind != 0 {
+		return nil, fmt.Errorf("event %s is kind %d, not 0", event.ID, event.Kind)
+	}
+
+	var meta ProfileMetadata
+	err := json.Unmarshal([]byte(event.Content), &meta)
+	if err != nil {
+		cont := event.Content
+		if len(cont) > 100 {
+			cont = cont[0:99]
+		}
+		return nil, fmt.Errorf("failed to parse metadata (%s) from event %s: %w", cont, event.ID, err)
+	}
+
+	return &meta, nil
+}