first commit

internal/nostr/publish.go

@@ -0,0 +1,36 @@
+package nostr
+
+import (
+	"context"
+	"errors"
+
+	gn "github.com/nbd-wtf/go-nostr"
+)
+
+var ErrNoRelayAccepted = errors.New("no relay accepted event")
+
+// Publish sends an already-signed event to all relays in the pool.
+// Success if at least one relay accepts.
+func Publish(ctx context.Context, p *Pool, ev *gn.Event) error {
+	var lastErr error
+	accepted := 0
+	for _, url := range p.URLs() {
+		r, err := p.Connect(ctx, url)
+		if err != nil {
+			lastErr = err
+			continue
+		}
+		if err := r.Publish(ctx, *ev); err != nil {
+			lastErr = err
+			continue
+		}
+		accepted++
+	}
+	if accepted == 0 {
+		if lastErr != nil {
+			return lastErr
+		}
+		return ErrNoRelayAccepted
+	}
+	return nil
+}