initial

nostr.go

@@ -0,0 +1,46 @@
+package main
+
+import (
+	"context"
+	"fiatjaf.com/nostr"
+	"log"
+	"time"
+)
+
+func sendAlerts(config *Config, alert string) error {
+
+	pool := nostr.NewPool(nostr.PoolOptions{
+		PenaltyBox: true,
+	})
+	for _, relayurl := range config.Relays {
+		if !nostr.IsValidRelayURL(relayurl) {
+			log.Fatalf("%s is not a valid relay URL.")
+		}
+		relay, err := pool.EnsureRelay(relayurl)
+		check(err)
+		log.Printf("Connected to relay: %s", relay.URL)
+	}
+	event := &nostr.Event{
+		CreatedAt: nostr.Now(),
+		Kind:      nostr.KindTextNote,
+		Tags:      nostr.Tags{},
+		Content:   alert,
+	}
+
+	event.Sign(config.SecretKey)
+	ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
+	defer cancel()
+	results := pool.PublishMany(ctx, config.Relays, *event)
+
+	successCount := 0
+	for result := range results {
+		if result.Error != nil {
+			log.Printf("Failed on %s: %v\n", result.RelayURL, result.Error)
+		} else {
+			log.Printf("Succeeded on %s\n", result.RelayURL)
+			successCount++
+		}
+	}
+
+	return nil
+}