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hats/pkg/nats/subscribers.go

189 lines
4.7 KiB
Go

package nats
import (
"encoding/json"
"errors"
"fmt"
"log/slog"
ha "code.jhot.me/jhot/hats/pkg/homeassistant"
)
func GenericStateSubscriber(logger *slog.Logger, natsClient *NatsConnection, entityId string, handler func(ha.StateData) error) {
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 := natsClient.Subscribe(topic)
if err != nil {
l.Error("Error subscribing to topic", "error", err)
return
}
defer sub.Unsubscribe()
for msg := range ch {
go msg.Ack()
var data ha.EventData
err = json.Unmarshal(msg.Data, &data)
if err != nil {
l.Error("Error parsing message", "error", err)
continue
}
l.Debug("Event state " + data.NewState.State)
err = handler(data.NewState)
if err != nil {
l.Error("Error handling state event", "error", err)
continue
}
}
}
func GenericScheduleSubscriber(logger *slog.Logger, natsClient *NatsConnection, 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 := natsClient.Subscribe(topic)
if err != nil {
l.Error("Error subscribing to topic", "error", err)
return
}
defer sub.Unsubscribe()
for msg := range ch {
go msg.Ack()
l.Debug("Schedule fired", "name", scheduleName)
err = handler()
if err != nil {
l.Error("Error handling schedule event", "error", err)
continue
}
}
}
func GenericCommandSubscriber(logger *slog.Logger, natsClient *NatsConnection, 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 := natsClient.Subscribe(topic)
if err != nil {
l.Error("Error subscribing to topic", "error", err)
return
}
defer sub.Unsubscribe()
for msg := range ch {
go msg.Ack()
l.Debug("Command fired")
err = handler(msg.Data)
if err != nil {
l.Error("Error handling command event", "error", err)
continue
}
}
}
func GenericNfcSubscriber(logger *slog.Logger, natsClient *NatsConnection, 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 := natsClient.Subscribe(topic)
if err != nil {
l.Error("Error subscribing to topic", "error", err)
return
}
defer sub.Unsubscribe()
for msg := range ch {
go msg.Ack()
l.Debug("NFC tag scanned")
err = handler(msg.Data)
if err != nil {
l.Error("Error handling NFC event", "error", err)
continue
}
}
}
func GenericZhaSubscriber(logger *slog.Logger, natsClient *NatsConnection, 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 := natsClient.Subscribe(topic)
if err != nil {
l.Error("Error subscribing to topic", "error", err)
return
}
defer sub.Unsubscribe()
for msg := range ch {
go msg.Ack()
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 GenericZwaveLSubscriber(logger *slog.Logger, natsClient *NatsConnection, 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 := natsClient.Subscribe(topic)
if err != nil {
l.Error("Error subscribing to topic", "error", err)
return
}
defer sub.Unsubscribe()
for msg := range ch {
go msg.Ack()
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
}
}
}