Add sauna

.gitignore

@@ -4,3 +4,6 @@
 .DS_Store
 
 __debug_bin
+
+bin/
+homeservice.tar.gz

.vscode/launch.json

@@ -10,7 +10,7 @@
             "request": "launch",
             "mode": "auto",
             "program": "${workspaceFolder}/main.go",
-            "preLaunchTask": "npm: build - svelte"
+            "preLaunchTask": "npm: build - webui"
         }
     ]
 }

.vscode/tasks.json

@@ -4,10 +4,10 @@
 		{
 			"type": "npm",
 			"script": "build",
-			"path": "svelte",
+			"path": "webui",
 			"group": "build",
 			"problemMatcher": [],
-			"label": "npm: build - svelte",
+			"label": "npm: build - webui",
 			"detail": "vite build"
 		}
 	]

Makefile

@@ -0,0 +1,69 @@
+PROJECT_NAME := homeservice
+
+PREFIX ?= /usr/bin
+
+CONFIG_DIR := /etc/$(PROJECT_NAME)
+SYSTEM_DIR := /usr/lib/systemd/system
+WEB_DIR := /var/lib/$(PROJECT_NAME)
+
+CONFIG_FILE := config/config.json
+BIN_FILE := bin/$(PROJECT_NAME)
+UNIT_FILE := $(PROJECT_NAME).service
+README_FILE := README.md
+
+.PHONY: all
+all: webui service
+
+.PHONY: service
+service:
+	mkdir -p bin
+	go clean
+	go mod tidy
+	go build -o $(BIN_FILE)
+
+.PHONY: webui
+webui:
+	npm install --prefix webui
+	npm run build --prefix webui
+
+.PHONY: clean
+clean:
+	go clean
+	rm -rf bin
+	rm -rf webui/build webui/node_modules webui/.svelte-kit
+	-rm $(PROJECT_NAME).tar.gz
+
+.PHONY: install
+install: all
+	# Config file
+	@if [ -f $(CONFIG_DIR)/$(notdir $(CONFIG_FILE)) ]; then \
+		echo "$(CONFIG_DIR)/$(notdir $(CONFIG_FILE)) already exists - skipping..."; \
+	else \
+		install -d $(CONFIG_DIR); \
+		install -m 0644 $(CONFIG_FILE) $(CONFIG_DIR); \
+		echo "install -d $(CONFIG_DIR)"; \
+		echo "install -m 0644 $(CONFIG_FILE) $(CONFIG_DIR)"; \
+	fi
+	
+	# Binary
+	install -d $(PREFIX)
+	install -m 0755 $(BIN_FILE) $(PREFIX)
+
+	# System unit
+	install -d $(SYSTEM_DIR)
+	install -m 0644 $(UNIT_FILE) $(SYSTEM_DIR)
+
+	# Web ui
+	install -d $(WEB_DIR)
+	cp -r webui/build/* $(WEB_DIR)
+
+.PHONY: uninstall
+uninstall:
+	rm -rf $(CONFIG_DIR)
+	rm -rf $(SYSTEM_DIR)/$(UNIT_FILE)
+	rm -rf $(PREFIX)/$(PROJECT_NAME)
+	rm -rf $(WEB_DIR)
+
+.PHONY: package
+package: all
+	tar cvzf $(PROJECT_NAME).tar.gz $(CONFIG_FILE) $(BIN_FILE) $(UNIT_FILE) $(README_FILE) webui/build/*

config/config.json

@@ -1,12 +0,0 @@
-{
-    "outer_gate": {
-        "state": 1,
-        "open_time": 4,
-        "close_time": 2
-    },
-    "inner_gate": {
-        "state": 1,
-        "open_time": 2,
-        "close_time": 2
-    }
-}

go.mod

@@ -1,3 +1,11 @@
 module webserver
 
 go 1.19
+
+require github.com/eclipse/paho.mqtt.golang v1.4.2
+
+require (
+	github.com/gorilla/websocket v1.4.2 // indirect
+	golang.org/x/net v0.0.0-20200425230154-ff2c4b7c35a0 // indirect
+	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
+)

go.sum

@@ -0,0 +1,12 @@
+github.com/eclipse/paho.mqtt.golang v1.4.2 h1:66wOzfUHSSI1zamx7jR6yMEI5EuHnT1G6rNA5PM12m4=
+github.com/eclipse/paho.mqtt.golang v1.4.2/go.mod h1:JGt0RsEwEX+Xa/agj90YJ9d9DH2b7upDZMK9HRbFvCA=
+github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
+github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/net v0.0.0-20200425230154-ff2c4b7c35a0 h1:Jcxah/M+oLZ/R4/z5RzfPzGbPXnVDPkEDtf2JnuxN+U=
+golang.org/x/net v0.0.0-20200425230154-ff2c4b7c35a0/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

homeservice.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=homeservice service
+After=multi-user.target
+
+[Service]
+Type=idle
+ExecStart=/usr/bin/homeservice -c /etc/homeservice/config.json
+
+[Install]
+WantedBy=multi-user.target

main.go

@@ -2,144 +2,107 @@ package main
 
 import (
 	"encoding/json"
-	"flag"
-	"fmt"
-	"io"
 	"log"
+	"mime"
 	"net/http"
-	"os"
+	"sync"
+
+	mqtt "github.com/eclipse/paho.mqtt.golang"
 )
 
-const (
-	OPENED  uint = 1
-	CLOSED  uint = 2
-	CLOSING uint = 3
-	OPENING uint = 4
-)
-
-type gate struct {
-	State     uint `json:"state"`
-	OpenTime  uint `json:"open_time"`
-	CloseTime uint `json:"close_time"`
-}
-
-type config struct {
-	InnerGate gate `json:"inner_gate"`
-	OuterGate gate `json:"outer_gate"`
+type temperature struct {
+	Value float64 `json:"value"`
+	Unit  string  `json:"unit"`
 }
 
 var (
 	logger log.Logger = *log.Default()
-	config_path string
 
-	cache_inner_gate = gate{
-		State:     1,
-		OpenTime:  2,
-		CloseTime: 2,
-	}
-
-	cache_outer_gate = gate{
-		State:     1,
-		OpenTime:  4,
-		CloseTime: 2,
-	}
-
-	config_cache = config{
-		InnerGate: cache_inner_gate,
-		OuterGate: cache_outer_gate,
+	sauna_mutex       sync.Mutex
+	sauna_temperature = temperature{
+		Value: 0.0,
+		Unit:  "°C",
 	}
 )
 
-func read_config() {
-	data, err := os.ReadFile(config_path)
-	if err != nil {
-		logger.Printf("Unable to read %s", config_path)
-		return
-	}
-	err = json.Unmarshal(data, &config_cache)
-	if err != nil {
-		logger.Print("Unable to evaluate config data")
-		return
-	}
+var messagePubHandler mqtt.MessageHandler = func(client mqtt.Client, msg mqtt.Message) {
+	logger.Printf("Received message: %s from topic: %s\n", msg.Payload(), msg.Topic())
 }
 
-func api_handler_gates(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Content-type", "application/json; charset=utf-8;")
-	if r.Method == "GET" {
-		res, err := json.Marshal(config_cache)
-		if err != nil {
-			res = json.RawMessage(`{"error": "` + err.Error() + `"}`)
-			w.WriteHeader(http.StatusInternalServerError)
-			w.Write(res)
-			return
-		}
-		w.WriteHeader(http.StatusOK)
-		w.Write(res)
-	} else if r.Method == "PATCH" {
-		var tmp config
-		payload, _ := io.ReadAll(r.Body)
-		err := json.Unmarshal(payload, &tmp)
+var saunaHandler mqtt.MessageHandler = func(client mqtt.Client, msg mqtt.Message) {
+	log.Printf("Received message: %s from topic: %s\n", msg.Payload(), msg.Topic())
+	sauna_mutex.Lock()
+	err := json.Unmarshal(msg.Payload(), &sauna_temperature)
+	sauna_mutex.Unlock()
 	if err != nil {
 		logger.Print(err)
-		}
-		logger.Print(r.Body)
-
-	} else {
-		w.WriteHeader(http.StatusMethodNotAllowed)
+		return
 	}
 }
 
-func api_handler_gates_outer(w http.ResponseWriter, r *http.Request) {
-	if r.Method == "GET" {
-		res, err := json.Marshal(map[string]uint{"state": config_cache.OuterGate.State})
-		if err != nil {
-			res = json.RawMessage(`{"error": "` + err.Error() + `"}`)
-			w.WriteHeader(http.StatusInternalServerError)
-			w.Write(res)
-			return
-		}
-		w.WriteHeader(http.StatusOK)
-		w.Write(res)
-	} else if r.Method == "PATCH" {
-		var tmp config
-		payload, _ := io.ReadAll(r.Body)
-		err := json.Unmarshal(payload, &tmp)
-		if err != nil {
-			res := json.RawMessage(`{"error": "` + err.Error() + `"}`)
-			w.WriteHeader(http.StatusInternalServerError)
-			w.Write(res)
-			return
-		}
-		if tmp.OuterGate.State == 1 {
-			config_cache.OuterGate.State = 3 // Schliessen => Schliesst
-		} else if tmp.OuterGate.State == 2 {
-			config_cache.OuterGate.State = 4 // Oeffnen => Oeffnet
-		}
-		// FIXME: add real gate handling
+var connectHandler mqtt.OnConnectHandler = func(client mqtt.Client) {
+	logger.Println("Connected")
+}
 
+var connectLostHandler mqtt.ConnectionLostHandler = func(client mqtt.Client, err error) {
+	logger.Printf("Connect lost: %v", err)
+}
+
+func init() {
+	logger.SetPrefix("Homeservice: ")
+}
+
+func http_endpoint_sauna(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-type", "application/json; charset=utf-8;")
+	if r.Method == http.MethodGet {
+		sauna_mutex.Lock()
+		data, err := json.Marshal(sauna_temperature)
+		sauna_mutex.Unlock()
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write(json.RawMessage(`{"error": "cannot marshal object to json"}`))
+		} else {
 			w.WriteHeader(http.StatusOK)
+			w.Write(data)
+		}
 	} else {
 		w.WriteHeader(http.StatusMethodNotAllowed)
 	}
 }
 
 func main() {
-	flag.StringVar(&config_path, "c", "./config/config.json", "Specify path to find the config file. Default is ./config/config.json")
-	flag.Parse()
-	read_config()
+	logger.Println("starting")
 
+	// MQTT connection
+	opts := mqtt.NewClientOptions()
+	opts.AddBroker("tcp://nuc:1883")
+	opts.SetClientID("homeservice")
+	opts.SetDefaultPublishHandler(messagePubHandler)
+	opts.OnConnect = connectHandler
+	opts.OnConnectionLost = connectLostHandler
+	client := mqtt.NewClient(opts)
+	if token := client.Connect(); token.Wait() && token.Error() != nil {
+		panic(token.Error())
+	}
+
+	// MQTT subscribtion
+	topic := "sauna/temperature"
+	token := client.Subscribe(topic, 1, saunaHandler)
+	token.Wait()
+	logger.Printf("Subscribed to topic %s", topic)
+
+	mime.AddExtensionType(".js", "text/javascript; charset=utf-8")
+	mime.AddExtensionType(".css", "text/css; charset=utf-8")
 	// API routes
 	// Serve files from static folder
-	http.Handle("/", http.FileServer(http.Dir("./svelte/build")))
+	http.Handle("/", http.FileServer(http.Dir("/build/homeservice/webui/build")))
 
-	// Serve api
-	http.HandleFunc("/gates", api_handler_gates)
-	http.HandleFunc("/gates/outer", api_handler_gates_outer)
+	http.HandleFunc("/sauna/sample", http_endpoint_sauna)
 
 	port := ":5000"
-	fmt.Println("Server is running on port" + port)
+	logger.Println("Server is running on port" + port)
 
 	// Start server on port specified above
-	log.Fatal(http.ListenAndServe(port, nil))
+	logger.Fatal(http.ListenAndServe(port, nil))
 
 }

webui/src/lib/Header.svelte

@@ -16,12 +16,7 @@
 
     <ul class="menu">
         <li><a href="/">Home</a></li>
-        <li><a href="/chicken">Chicken</a></li>
-        <!-- <li><a href="/Information">Information</a></li>
-        <li><a href="/Configuration">Configuration</a></li>
-        <li><a href="/Security">Security</a></li>
-        <li><a href="/FirmwareUpdate">Firmware update</a></li>
-        <li><a href="/APIDocumentation">API documentation</a></li>
-        <li><a href="https://docs.perinet.io" target="_blank">Online documentation</a></li> -->
+        <li><a href="/sauna">Sauna</a></li>
+        <!-- <li><a href="/chicken">Chicken</a></li> -->
     </ul>
 </header>

webui/src/routes/sauna/+page.js

@@ -0,0 +1 @@
+export const prerender = true;

webui/src/routes/sauna/+page.svelte

@@ -0,0 +1,41 @@
+<script>
+	import { onMount } from "../../../node_modules/svelte/internal";
+	import icon from "../../../static/sauna.svg"
+
+	let backend_url = "https://home.blackfinn.de/sauna/sample";
+
+	let temperature_value = 0.0
+	let temperature_unit = "°C"
+
+	function get_temperature() {
+		fetch(backend_url)
+		.then(response => response.json())
+		.then(data => {
+			temperature_unit = data.unit
+			temperature_value = data.value
+		}).catch(error => {
+			console.log(error);
+			return [];
+		});
+	}
+
+	setInterval(() => {
+		get_temperature();
+	}, 1000)
+
+	onMount(async () => {
+		get_temperature();
+	});
+</script>
+
+<svelte:head>
+	<title>Sauna</title>
+	<meta name="description" content="Sauna"/>
+</svelte:head>
+
+<section id='content_id' class='content'>
+	<figure>
+		<img src={icon} alt="Sauna" width=150/>
+	</figure>
+	<h1>{temperature_value} {temperature_unit}</h1>
+</section>

webui/static/sauna.svg

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Uploaded to: SVG Repo, www.svgrepo.com, Generator: SVG Repo Mixer Tools -->
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg fill="#000000" height="800px" width="800px" version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" 
+	 viewBox="0 0 485.252 485.252" xml:space="preserve">
+<g id="XMLID_288_">
+	<path id="XMLID_289_" d="M315.478,319.287c-7.563-11.352-20.3-18.164-33.928-18.164h-81.497l-1.975-20.936l65.72,9.052
+		c1.497,0.205,2.993,0.301,4.49,0.301c16.032,0,30.012-11.829,32.255-28.154c2.451-17.84-10.014-34.295-27.859-36.753l-67.87-9.347
+		l-14.95-22.24l-2.626-27.853c-2.118-22.402-22.131-39.03-44.403-36.745c-22.417,2.109-38.863,21.994-36.762,44.402l16.303,172.857
+		c1.975,20.936,19.553,36.93,40.582,36.93h96.766l56.248,84.441c7.865,11.79,20.792,18.174,33.958,18.174
+		c7.771,0,15.62-2.221,22.56-6.846c18.738-12.475,23.803-37.779,11.336-56.51L315.478,319.287z"/>
+	<path id="XMLID_290_" d="M163.643,108.688c30.01,0,54.337-24.333,54.337-54.346C217.98,24.333,193.653,0,163.643,0
+		c-30.026,0-54.354,24.333-54.354,54.343C109.29,84.355,133.617,108.688,163.643,108.688z"/>
+	<path id="XMLID_291_" d="M222.741,406.453H108.063L86.762,236.356c-1.115-8.924-9.17-15.292-18.197-14.153
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+		c9.01,0,16.303-7.301,16.303-16.303C239.044,413.752,231.751,406.453,222.741,406.453z"/>
+	<path id="XMLID_292_" d="M406.618,319.467c0-21.502,24.35-30.94,24.35-61.759c0-20.446-15.583-30.286-26.073-34.594
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+		c0,22.987,15.241,34.074,25.869,39.012c2.855,1.327,5.712-1.857,4.087-4.555C411.674,346.781,406.618,335.071,406.618,319.467z"/>
+	<path id="XMLID_293_" d="M369.124,249.696c2.855,1.326,5.712-1.857,4.086-4.555c-4.305-7.142-9.361-18.853-9.361-34.457
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+</g>
+</svg>