From a49978ee5f94a6e297266ee84cd5721a765f5850 Mon Sep 17 00:00:00 2001
From: Jarno Rankinen <jarno@oranki.net>
Date: Thu, 9 Mar 2023 16:15:54 +0200
Subject: [PATCH] gh-21 PUT /api/v1/temperature/<action> for changing
 temperature setpoint

---
 enervent-ctrl-go/main.go                | 14 ++++++++-
 enervent-ctrl-go/pingvinKL/pingvinKL.go | 38 +++++++++++++++++++++++++
 2 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/enervent-ctrl-go/main.go b/enervent-ctrl-go/main.go
index 63523cb..54d04dc 100644
--- a/enervent-ctrl-go/main.go
+++ b/enervent-ctrl-go/main.go
@@ -22,7 +22,7 @@ import (
 var static embed.FS
 
 var (
-	version    = "0.0.12"
+	version    = "0.0.13"
 	pingvin    pingvinKL.PingvinKL
 	DEBUG      *bool
 	INTERVAL   *int
@@ -110,11 +110,23 @@ func status(w http.ResponseWriter, r *http.Request) {
 	json.NewEncoder(w).Encode(pingvin.Status)
 }
 
+func temperature(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	pathparams := strings.Split(strings.TrimPrefix(r.URL.Path, "/api/v1/temperature/"), "/")
+	if len(pathparams[0]) > 0 && r.Method == "POST" && len(pathparams) == 1 {
+		pingvin.Temperature(pathparams[0])
+		json.NewEncoder(w).Encode(pingvin.Registers[135])
+	} else {
+		return
+	}
+}
+
 func listen() {
 	log.Println("Starting pingvinAPI...")
 	http.HandleFunc("/api/v1/coils/", coils)
 	http.HandleFunc("/api/v1/registers/", registers)
 	http.HandleFunc("/api/v1/status", status)
+	http.HandleFunc("/api/v1/temperature/", temperature)
 	html, err := fs.Sub(static, "static/html")
 	if err != nil {
 		log.Fatal(err)
diff --git a/enervent-ctrl-go/pingvinKL/pingvinKL.go b/enervent-ctrl-go/pingvinKL/pingvinKL.go
index 6f957fe..a68cdab 100644
--- a/enervent-ctrl-go/pingvinKL/pingvinKL.go
+++ b/enervent-ctrl-go/pingvinKL/pingvinKL.go
@@ -502,6 +502,44 @@ func parseStatus(value int) string {
 
 }
 
+func (p *PingvinKL) Temperature(action string) error {
+	temperature := 0
+	if action == "up" {
+		temperature = p.Registers[135].Value + 1*p.Registers[135].Multiplier
+		p.Debug.Println("Raising temperature to", temperature)
+	} else if action == "down" {
+		temperature = p.Registers[135].Value - 1*p.Registers[135].Multiplier
+		p.Debug.Println("Lowering temperature to", temperature)
+	} else {
+		t, err := strconv.Atoi(action)
+		if err != nil {
+			p.Debug.Println(err)
+			tfloat, err := strconv.ParseFloat(action, 32)
+			if err != nil {
+				p.Debug.Println(err)
+				return err
+			}
+			t = int(tfloat * float64(p.Registers[135].Multiplier))
+			temperature = t
+		}
+		p.Debug.Println("Setting temperature to", temperature)
+		// _, err = p.WriteRegister(135, uint16(t))
+		// if err != nil {
+		// 	return err
+		// }
+	}
+	if temperature > 300 || temperature < 200 {
+		return fmt.Errorf("Temperature setpoint must be between 200 and 300")
+	}
+	p.Debug.Println("Writing register 135 to", temperature)
+	res, err := p.WriteRegister(135, uint16(temperature))
+	if err != nil {
+		return err
+	}
+	p.Debug.Println("Temperature changed to", res)
+	return nil
+}
+
 func (p *PingvinKL) Monitor(interval int) {
 	for {
 		time.Sleep(time.Duration(interval) * time.Second)