Add Home Assistant Switch as switchsockets charger (#21358)

charger/homeassistant-switch.go

@@ -0,0 +1,106 @@
+package charger
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/evcc-io/evcc/api"
+	"github.com/evcc-io/evcc/util"
+	"github.com/evcc-io/evcc/util/request"
+	"github.com/evcc-io/evcc/util/transport"
+)
+
+type HomeAssistantSwitch struct {
+	baseURL      string
+	switchEntity string
+	powerEntity  string
+	*request.Helper
+	*switchSocket
+}
+
+func init() {
+	registry.Add("homeassistant-switch", NewHomeAssistantSwitchFromConfig)
+}
+
+func NewHomeAssistantSwitchFromConfig(other map[string]interface{}) (api.Charger, error) {
+	var cc struct {
+		embed        `mapstructure:",squash"`
+		BaseURL      string
+		Token        string
+		SwitchEntity string
+		PowerEntity  string
+		StandbyPower float64
+	}
+
+	if err := util.DecodeOther(other, &cc); err != nil {
+		return nil, err
+	}
+
+	return NewHomeAssistantSwitch(cc.embed, cc.BaseURL, cc.Token, cc.SwitchEntity, cc.PowerEntity, cc.StandbyPower)
+}
+
+//go:generate go tool decorate -f decorateHomeAssistantSwitch -b *HomeAssistantSwitch -r api.Charger -t "api.Meter,CurrentPower,func() (float64, error)"
+
+func NewHomeAssistantSwitch(embed embed, baseURL, token, switchEntity, powerEntity string, standbypower float64) (api.Charger, error) {
+	c := &HomeAssistantSwitch{
+		baseURL:      baseURL,
+		switchEntity: switchEntity,
+		powerEntity:  powerEntity,
+		Helper:       request.NewHelper(util.NewLogger("ha-switch")),
+	}
+
+	c.switchSocket = NewSwitchSocket(&embed, c.Enabled, c.CurrentPower, standbypower)
+	c.Helper.Client.Transport = &transport.Decorator{
+		Decorator: transport.DecorateHeaders(map[string]string{
+			"Authorization": "Bearer " + token,
+			"Content-Type":  "application/json",
+		}),
+		Base: c.Helper.Client.Transport,
+	}
+
+	var currentPower func() (float64, error)
+	if powerEntity != "" {
+		currentPower = c.currentPower
+	}
+
+	return decorateHomeAssistantSwitch(c, currentPower), nil
+}
+
+// Enabled implements the api.Charger interface
+func (c *HomeAssistantSwitch) Enabled() (bool, error) {
+	var res struct {
+		State string `json:"state"`
+	}
+
+	uri := fmt.Sprintf("%s/api/states/%s", c.baseURL, c.switchEntity)
+	err := c.Helper.GetJSON(uri, &res)
+
+	return res.State == "on", err
+}
+
+// Enable implements the api.Charger interface
+func (c *HomeAssistantSwitch) Enable(enable bool) error {
+	service := "turn_off"
+	if enable {
+		service = "turn_on"
+	}
+
+	data := map[string]any{"entity_id": c.switchEntity}
+
+	uri := fmt.Sprintf("%s/api/services/switch/%s", c.baseURL, service)
+	req, _ := request.New(http.MethodPost, uri, request.MarshalJSON(data), request.JSONEncoding)
+
+	return c.Helper.DoJSON(req, nil)
+}
+
+// currentPower implements the api.Meter interface (optional)
+func (c *HomeAssistantSwitch) currentPower() (float64, error) {
+	var res struct {
+		State float64 `json:"state,string"`
+	}
+
+	uri := fmt.Sprintf("%s/api/states/%s", c.baseURL, c.powerEntity)
+	err := c.Helper.GetJSON(uri, &res)
+
+	return res.State, err
+}

charger/homeassistant-switch_decorators.go

@@ -0,0 +1,35 @@
+package charger
+
+// Code generated by github.com/evcc-io/evcc/cmd/tools/decorate.go. DO NOT EDIT.
+
+import (
+	"github.com/evcc-io/evcc/api"
+)
+
+func decorateHomeAssistantSwitch(base *HomeAssistantSwitch, meter func() (float64, error)) api.Charger {
+	switch {
+	case meter == nil:
+		return base
+
+	case meter != nil:
+		return &struct {
+			*HomeAssistantSwitch
+			api.Meter
+		}{
+			HomeAssistantSwitch: base,
+			Meter: &decorateHomeAssistantSwitchMeterImpl{
+				meter: meter,
+			},
+		}
+	}
+
+	return nil
+}
+
+type decorateHomeAssistantSwitchMeterImpl struct {
+	meter func() (float64, error)
+}
+
+func (impl *decorateHomeAssistantSwitchMeterImpl) CurrentPower() (float64, error) {
+	return impl.meter()
+}

templates/definition/charger/homeassistant-switch.yaml

@@ -0,0 +1,34 @@
+template: homeassistant-switch
+products:
+  - brand: Home Assistant Switch
+group: switchsockets
+params:
+  - name: baseurl
+    description:
+      de: Basis-URL der Home Assistant Instanz (z.B. http://homeassistant.local:8123)
+      en: Base URL of the Home Assistant instance (e.g. http://homeassistant.local:8123)
+    required: true
+    default: http://homeassistant.local:8123
+  - name: token
+    mask: true
+    required: true
+    description:
+      de: Long-Lived Access Token aus Home Assistant Profil
+      en: Long-Lived Access Token from Home Assistant profile
+  - name: switchentity
+    required: true
+    description:
+      de: Entity ID des schaltbaren Geräts (z.B. switch.smartsocket)
+      en: Entity ID of the switch device (e.g. switch.smartsocket)
+  - name: powerentity
+    description:
+      de: Entity ID für Leistungsmessung (optional, z.B. sensor.smartsocket_power)
+      en: Entity ID for power measurement (optional, e.g. sensor.smartsocket_power)
+  - preset: switchsocket
+render: |
+  type: homeassistant-switch
+  baseurl: {{ .baseurl }}
+  token: {{ .token }}
+  switchentity: {{ .switchentity }}
+  powerentity: {{ .powerentity }}
+  {{ include "switchsocket" . }}