Publish timers to better topic, start sub refactor

internal/homeassistant/subscriber.go

@@ -161,7 +161,7 @@ func handleMessages() {
 						data, _ := json.Marshal(message.Event.Data)
 						nats.Publish(fmt.Sprintf("homeassistant.zwave-scene.%s", message.Event.Data.DeviceId), data)
 					case timerFinishedEventId:
-						nats.PublishRequest(fmt.Sprintf("homeassistant.%s.finished", message.Event.Data.EntityId), []byte("finished"), defaultTimeout, 3)
+						nats.PublishRequest(fmt.Sprintf("homeassistant.timers.%s.finished", message.Event.Data.EntityId), []byte("finished"), defaultTimeout, 3)
 					}
 				}()
 			}

pkg/nats/client.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"log/slog"
 	"strings"
 
 	"github.com/nats-io/nats.go"
@@ -18,6 +19,7 @@ type NatsConnection struct {
 	jetOpts      []jetstream.JetStreamOpt
 	Conn         *nats.Conn
 	JS           jetstream.JetStream
+	logger       *slog.Logger
 }
 
 func DefaultNatsConnection() *NatsConnection {
@@ -27,6 +29,7 @@ func DefaultNatsConnection() *NatsConnection {
 		UseJetstream: true,
 		connOpts:     []nats.Option{},
 		jetOpts:      []jetstream.JetStreamOpt{},
+		logger:       slog.Default(),
 	}
 }
 
@@ -74,6 +77,12 @@ func WithJetstreamnOption(opt jetstream.JetStreamOpt) NatsConnectionOption {
 	}
 }
 
+func WithLogger(logger *slog.Logger) NatsConnectionOption {
+	return func(nc *NatsConnection) {
+		nc.logger = logger
+	}
+}
+
 func New(optFuncs ...NatsConnectionOption) *NatsConnection {
 	n := DefaultNatsConnection()
 	for _, optFn := range optFuncs {

pkg/nats/subscribers.go

@@ -2,213 +2,94 @@ package nats
 
 import (
 	"encoding/json"
-	"errors"
 	"fmt"
-	"log/slog"
 
 	ha "code.jhot.me/jhot/hats/pkg/homeassistant"
+	"github.com/nats-io/nats.go"
 )
 
-func (n *NatsConnection) GenericStateSubscriber(logger *slog.Logger, entityId string, handler func(ha.StateData) error) {
+type TopicType string
-	if entityId == "" {
-		panic(errors.New("entity ID cannot be empty"))
-	}
-	topic := fmt.Sprintf("homeassistant.states.%s.>", entityId)
-	l := logger.With("topic", topic, "entity_id", entityId)
-	l.Debug("Subscribing to topic")
-	sub, ch, err := n.Subscribe(topic)
-	if err != nil {
-		l.Error("Error subscribing to topic", "error", err)
-		return
-	}
 
-	defer sub.Unsubscribe()
+const StateTopicType TopicType = "states"
+const TimerTopicType TopicType = "timers"
+const ScheduleTopicType TopicType = "schedules"
+const CommandTopicType TopicType = "command"
+const NfcTopicType TopicType = "nfc"
+const ZhaTopicType TopicType = "zha"
+const ZwaveTopicType TopicType = "zwave"
+const ZwaveSceneTopicType TopicType = "zwave-scene"
 
-	for msg := range ch {
+func (t TopicType) GetTopic(id string) string {
+	switch t {
+	case StateTopicType:
+		return fmt.Sprintf("homeassistant.%s.%s.>", t, id)
+	case TimerTopicType:
+		return fmt.Sprintf("homeassistant.%s.%s.finished", t, id)
+	case ScheduleTopicType, CommandTopicType:
+		return fmt.Sprintf("%s.%s", t, id)
+	case NfcTopicType, ZhaTopicType, ZwaveTopicType, ZwaveSceneTopicType:
+		return fmt.Sprintf("homeassistant.%s.%s", t, id)
+	}
+	return ""
+}
+
+func (n *NatsConnection) addSub(topic string, cb nats.MsgHandler) (*nats.Subscription, error) {
+	return n.Conn.Subscribe(topic, cb)
+}
+
+func parseEvent(msg *nats.Msg, sendResponse bool) (ha.EventData, error) {
+	if sendResponse {
 		go msg.Respond([]byte("got it"))
-		var data ha.EventData
+	}
-		err = json.Unmarshal(msg.Data, &data)
+	var data ha.EventData
+	err := json.Unmarshal(msg.Data, &data)
+	return data, err
+}
+
+func (n *NatsConnection) AddEventSub(t TopicType, entityId string, handler func(ha.EventData) error) (*nats.Subscription, error) {
+	if t == "" || entityId == "" {
+		panic("TopicType and entityId cannot be empty")
+	}
+
+	topic := t.GetTopic(entityId)
+	l := n.logger.With("topic", topic, "entity_id", entityId)
+	l.Debug("Subscribing to topic")
+
+	return n.addSub(topic, func(msg *nats.Msg) {
+		data, err := parseEvent(msg, true)
 		if err != nil {
 			l.Error("Error parsing message", "error", err)
-			continue
+			return
 		}
-		l.Debug("Event state " + data.NewState.State)
+		l.Debug(fmt.Sprintf("%s data event fired", t))
+		err = handler(data)
+		if err != nil {
+			l.Error(fmt.Sprintf("Error handling %s event", t), "error", err)
+			return
+		}
+	})
+}
+
+func (n *NatsConnection) AddStateSub(t TopicType, entityId string, handler func(ha.StateData) error) (*nats.Subscription, error) {
+	if t == "" || entityId == "" {
+		panic("TopicType and entityId cannot be empty")
+	}
+
+	topic := t.GetTopic(entityId)
+	l := n.logger.With("topic", topic, "entity_id", entityId)
+	l.Debug("Subscribing to topic")
+
+	return n.addSub(topic, func(msg *nats.Msg) {
+		data, err := parseEvent(msg, true)
+		if err != nil {
+			l.Error("Error parsing message", "error", err, "message", string(msg.Data))
+			return
+		}
+		l.Debug(fmt.Sprintf("%s state event fired", t), "newState", data.NewState.State)
 		err = handler(data.NewState)
 		if err != nil {
-			l.Error("Error handling state event", "error", err)
+			l.Error(fmt.Sprintf("Error handling %s event", t), "error", err)
-			continue
+			return
 		}
-	}
+	})
-}
-
-func (n *NatsConnection) GenericTimerSubscriber(logger *slog.Logger, timerName string, handler func() error) {
-	if timerName == "" {
-		panic(errors.New("timer name cannot be empty"))
-	}
-	topic := fmt.Sprintf("homeassistant.%s.finished", timerName)
-	l := logger.With("topic", topic, "timer", timerName)
-	l.Debug("Subscribing to topic")
-	sub, ch, err := n.Subscribe(topic)
-	if err != nil {
-		l.Error("Error subscribing to topic", "error", err)
-		return
-	}
-
-	defer sub.Unsubscribe()
-
-	for msg := range ch {
-		go msg.Respond([]byte("got it"))
-		l.Debug("Timer ended", "name", timerName)
-		err = handler()
-		if err != nil {
-			l.Error("Error handling timer event", "error", err)
-			continue
-		}
-	}
-}
-
-func (n *NatsConnection) GenericScheduleSubscriber(logger *slog.Logger, scheduleName string, handler func() error) {
-	if scheduleName == "" {
-		panic(errors.New("schedule name cannot be empty"))
-	}
-	topic := fmt.Sprintf("schedules.%s", scheduleName)
-	l := logger.With("topic", topic, "schedule", scheduleName)
-	l.Debug("Subscribing to topic")
-	sub, ch, err := n.Subscribe(topic)
-	if err != nil {
-		l.Error("Error subscribing to topic", "error", err)
-		return
-	}
-
-	defer sub.Unsubscribe()
-
-	for msg := range ch {
-		go msg.Respond([]byte("got it"))
-		l.Debug("Schedule fired", "name", scheduleName)
-		err = handler()
-		if err != nil {
-			l.Error("Error handling schedule event", "error", err)
-			continue
-		}
-	}
-}
-
-func (n *NatsConnection) GenericCommandSubscriber(logger *slog.Logger, commandName string, handler func([]byte) error) {
-	if commandName == "" {
-		panic(errors.New("command name cannot be empty"))
-	}
-	topic := fmt.Sprintf("command.%s", commandName)
-	l := logger.With("topic", topic, "command", commandName)
-	l.Debug("Subscribing to topic")
-	sub, ch, err := n.Subscribe(topic)
-	if err != nil {
-		l.Error("Error subscribing to topic", "error", err)
-		return
-	}
-
-	defer sub.Unsubscribe()
-
-	for msg := range ch {
-		go msg.Respond([]byte("got it"))
-		l.Debug("Command fired")
-		err = handler(msg.Data)
-		if err != nil {
-			l.Error("Error handling command event", "error", err)
-			continue
-		}
-	}
-}
-
-func (n *NatsConnection) GenericNfcSubscriber(logger *slog.Logger, tagId string, handler func([]byte) error) {
-	if tagId == "" {
-		panic(errors.New("tag ID cannot be empty"))
-	}
-	topic := fmt.Sprintf("homeassistant.nfc.%s", tagId)
-	l := logger.With("topic", topic, "tagId", tagId)
-	l.Debug("Subscribing to topic")
-	sub, ch, err := n.Subscribe(topic)
-	if err != nil {
-		l.Error("Error subscribing to topic", "error", err)
-		return
-	}
-
-	defer sub.Unsubscribe()
-
-	for msg := range ch {
-		go msg.Respond([]byte("got it"))
-		l.Debug("NFC tag scanned")
-		err = handler(msg.Data)
-		if err != nil {
-			l.Error("Error handling NFC event", "error", err)
-			continue
-		}
-	}
-}
-
-func (n *NatsConnection) GenericZhaSubscriber(logger *slog.Logger, deviceIeee string, handler func(ha.EventData) error) {
-	if deviceIeee == "" {
-		panic(errors.New("device IEEE cannot be empty"))
-	}
-	topic := fmt.Sprintf("homeassistant.zha.%s", deviceIeee)
-	l := logger.With("topic", topic, "ieee", deviceIeee)
-	l.Debug("Subscribing to topic")
-	sub, ch, err := n.Subscribe(topic)
-	if err != nil {
-		l.Error("Error subscribing to topic", "error", err)
-		return
-	}
-
-	defer sub.Unsubscribe()
-
-	for msg := range ch {
-		go msg.Respond([]byte("got it"))
-		var data ha.EventData
-		err = json.Unmarshal(msg.Data, &data)
-		if err != nil {
-			l.Error("Error parsing message", "error", err)
-			continue
-		}
-		l.Debug("ZHA event fired")
-		err = handler(data)
-		if err != nil {
-			l.Error("Error handling ZHA event", "error", err)
-			continue
-		}
-	}
-}
-
-func (n *NatsConnection) GenericZwaveLSubscriber(logger *slog.Logger, deviceId string, scene bool, handler func(ha.EventData) error) {
-	if deviceId == "" {
-		panic(errors.New("device ID cannot be empty"))
-	}
-	scenePart := ""
-	if scene {
-		scenePart = "-scene"
-	}
-	topic := fmt.Sprintf("homeassistant.zwave%s.%s", scenePart, deviceId)
-	l := logger.With("topic", topic, "deviceId", deviceId)
-	l.Debug("Subscribing to topic")
-	sub, ch, err := n.Subscribe(topic)
-	if err != nil {
-		l.Error("Error subscribing to topic", "error", err)
-		return
-	}
-
-	defer sub.Unsubscribe()
-
-	for msg := range ch {
-		go msg.Respond([]byte("got it"))
-		var data ha.EventData
-		err = json.Unmarshal(msg.Data, &data)
-		if err != nil {
-			l.Error("Error parsing message", "error", err)
-			continue
-		}
-		l.Debug("Zwave event fired")
-		err = handler(data)
-		if err != nil {
-			l.Error("Error handling Zwave event", "error", err)
-			continue
-		}
-	}
 }