bring in khatru and eventstore.

eventstore/relay_interface.go

@@ -0,0 +1,56 @@
+package eventstore
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/nbd-wtf/go-nostr"
+)
+
+type RelayWrapper struct {
+	Store
+}
+
+var _ nostr.RelayStore = (*RelayWrapper)(nil)
+
+func (w RelayWrapper) Publish(ctx context.Context, evt nostr.Event) error {
+	if nostr.IsEphemeralKind(evt.Kind) {
+		// do not store ephemeral events
+		return nil
+	}
+
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	if nostr.IsRegularKind(evt.Kind) {
+		// regular events are just saved directly
+		if err := w.SaveEvent(ctx, &evt); err != nil && err != ErrDupEvent {
+			return fmt.Errorf("failed to save: %w", err)
+		}
+		return nil
+	}
+
+	// others are replaced
+	w.Store.ReplaceEvent(ctx, &evt)
+
+	return nil
+}
+
+func (w RelayWrapper) QuerySync(ctx context.Context, filter nostr.Filter) ([]*nostr.Event, error) {
+	ch, err := w.Store.QueryEvents(ctx, filter)
+	if err != nil {
+		return nil, fmt.Errorf("failed to query: %w", err)
+	}
+
+	n := filter.Limit
+	if n == 0 {
+		n = 500
+	}
+
+	results := make([]*nostr.Event, 0, n)
+	for evt := range ch {
+		results = append(results, evt)
+	}
+
+	return results, nil
+}