update handler (#2)

* 🔧 Remove commented-out regex patterns and initialization in config.

* ✨ Add NATS message publisher with configuration 📩🚀

* ✨ Add new PlainTextMarshaler and refactor handler in nats package.

internal/nats/pub.go

@@ -0,0 +1,48 @@
+package nats
+
+import (
+	"caatsm/internal/config"
+	"encoding/json"
+
+	"github.com/ThreeDotsLabs/watermill"
+	"github.com/ThreeDotsLabs/watermill-nats/v2/pkg/nats"
+	"github.com/ThreeDotsLabs/watermill/message"
+	nc "github.com/nats-io/nats.go"
+)
+
+func Publish(config *config.Config, parsedMessage interface{}) error {
+	logger := watermill.NewStdLogger(false, false)
+	options := []nc.Option{
+		nc.RetryOnFailedConnect(true),
+		nc.Timeout(config.Timeouts.Server),
+		nc.ReconnectWait(config.Timeouts.ReconnectWait),
+	}
+	jsConfig := nats.JetStreamConfig{Disabled: true}
+
+	publisher, err := nats.NewPublisher(
+		nats.PublisherConfig{
+			URL:         config.Nats.URL,
+			NatsOptions: options,
+			JetStream:   jsConfig,
+		},
+		logger,
+	)
+	if err != nil {
+		panic(err)
+	}
+
+	logger.Info("NATS server connected", map[string]interface{}{"url": config.Nats.URL})
+	logger.Info("Publishing message to NATS topic", map[string]interface{}{"topic": config.Publisher.Topic})
+
+	messageText, err := json.Marshal(parsedMessage)
+	if err != nil {
+		logger.Error("Failed to marshal message", err, map[string]interface{}{"message": parsedMessage})
+	}
+	msg := message.NewMessage(watermill.NewUUID(), []byte(messageText))
+	err = publisher.Publish(config.Publisher.Topic, msg)
+	if err != nil {
+		logger.Error("Failed to publish message to NATS topic", err, map[string]interface{}{"topic": config.Publisher.Topic})
+		return err
+	}
+	return nil
+}