Add Groupe E Vario Plus (CH) (#12767)

tariff/groupe-e.go

@@ -0,0 +1,108 @@
+package tariff
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"slices"
+	"sync"
+	"time"
+
+	"github.com/cenkalti/backoff/v4"
+	"github.com/evcc-io/evcc/api"
+	"github.com/evcc-io/evcc/util"
+	"github.com/evcc-io/evcc/util/request"
+)
+
+type GroupeE struct {
+	*embed
+	log  *util.Logger
+	data *util.Monitor[api.Rates]
+}
+
+var _ api.Tariff = (*GroupeE)(nil)
+
+func init() {
+	registry.Add("groupe-e", NewGroupeEFromConfig)
+}
+
+func NewGroupeEFromConfig(other map[string]interface{}) (api.Tariff, error) {
+	var cc struct {
+		embed `mapstructure:",squash"`
+	}
+
+	if err := util.DecodeOther(other, &cc); err != nil {
+		return nil, err
+	}
+
+	t := &GroupeE{
+		embed: &cc.embed,
+		log:   util.NewLogger("groupe-e"),
+		data:  util.NewMonitor[api.Rates](2 * time.Hour),
+	}
+
+	done := make(chan error)
+	go t.run(done)
+	err := <-done
+
+	return t, err
+}
+
+func (t *GroupeE) run(done chan error) {
+	var once sync.Once
+	bo := newBackoff()
+	client := request.NewHelper(t.log)
+
+	for ; true; <-time.Tick(time.Hour) {
+		var res []struct {
+			StartTimestamp time.Time `json:"start_timestamp"`
+			EndTimestamp   time.Time `json:"end_timestamp"`
+			VarioPlus      float64   `json:"vario_plus"`
+		}
+
+		start := time.Now().Truncate(time.Hour)
+		uri := fmt.Sprintf("https://api.tariffs.groupe-e.ch/v1/tariffs?start_timestamp=%s&end_timestamp=%s", start.Format(time.RFC3339), start.Add(48*time.Hour).Format(time.RFC3339))
+
+		if err := backoff.Retry(func() error {
+			err := client.GetJSON(uri, &res)
+			var se request.StatusError
+			if errors.As(err, &se) && se.HasStatus(http.StatusBadRequest) {
+				return backoff.Permanent(se)
+			}
+			return err
+		}, bo); err != nil {
+			once.Do(func() { done <- err })
+
+			t.log.ERROR.Println(err)
+			continue
+		}
+
+		data := make(api.Rates, 0, len(res))
+		for _, r := range res {
+			ar := api.Rate{
+				Start: r.StartTimestamp.Local(),
+				End:   r.EndTimestamp.Local(),
+				Price: t.totalPrice(r.VarioPlus / 1e2), // Rp/kWh
+			}
+			data = append(data, ar)
+		}
+		data.Sort()
+
+		t.data.Set(data)
+		once.Do(func() { close(done) })
+	}
+}
+
+// Rates implements the api.Tariff interface
+func (t *GroupeE) Rates() (api.Rates, error) {
+	var res api.Rates
+	err := t.data.GetFunc(func(val api.Rates) {
+		res = slices.Clone(val)
+	})
+	return res, err
+}
+
+// Type implements the api.Tariff interface
+func (t *GroupeE) Type() api.TariffType {
+	return api.TariffTypePriceForecast
+}

templates/definition/tariff/groupe-e.yaml

@@ -0,0 +1,10 @@
+template: groupe-e
+products:
+  - brand: Groupe E
+    description:
+      generic: Vario Plus
+params:
+  - preset: tariff-base
+render: |
+  type: groupe-e
+  {{ include "tariff-base" . }}