From 029f90de6895b68b5f3d1999858b09d055429679 Mon Sep 17 00:00:00 2001
From: Ethel Morgan <eth@ethulhu.co.uk>
Date: Fri, 19 Jun 2020 23:50:49 +0100
Subject: basic wake-on-lan actuator

---
 main.go | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 main.go

(limited to 'main.go')

diff --git a/main.go b/main.go
new file mode 100644
index 0000000..219cf8d
--- /dev/null
+++ b/main.go
@@ -0,0 +1,60 @@
+package main
+
+import (
+	"flag"
+	"log"
+
+	"go.eth.moe/catbus-actuator-wakeonlan/config"
+	"go.eth.moe/catbus-actuator-wakeonlan/mqtt"
+	"go.eth.moe/catbus-actuator-wakeonlan/wakeonlan"
+)
+
+var (
+	configPath = flag.String("config-path", "", "path to config")
+)
+
+func main() {
+	flag.Parse()
+
+	if *configPath == "" {
+		log.Fatal("must set -config-path")
+	}
+
+	config, err := config.ParseFile(*configPath)
+	if err != nil {
+		log.Fatalf("could not parse config file: %q", err)
+	}
+
+	brokerOptions := mqtt.NewClientOptions()
+	brokerOptions.AddBroker(config.Broker)
+	brokerOptions.SetAutoReconnect(true)
+	brokerOptions.SetConnectionLostHandler(func(_ mqtt.Client, err error) {
+		log.Printf("disconnected from MQTT broker %s: %v", config.Broker, err)
+	})
+	brokerOptions.SetOnConnectHandler(func(broker mqtt.Client) {
+		log.Printf("connected to MQTT broker %v", config.Broker)
+
+		for topic := range config.MACsByTopic {
+			token := broker.Subscribe(topic, mqtt.AtLeastOnce, func(_ mqtt.Client, msg mqtt.Message) {
+				mac, ok := config.MACsByTopic[msg.Topic()]
+				if !ok {
+					return
+				}
+				if err := wakeonlan.Wake(mac); err != nil {
+					log.Printf("could not send wake-on-lan: %v")
+				}
+			})
+			if err := token.Error(); err != nil {
+				log.Printf("could not subscribe to %q: %v", topic, err)
+
+			}
+		}
+	})
+
+	broker := mqtt.NewClient(brokerOptions)
+	if token := broker.Connect(); token.Error() != nil {
+		log.Fatalf("could not connect to MQTT broker: %v", token.Error())
+	}
+
+	select {}
+}
-- 
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