From aad484dbb00c7ad178f1eef2b995d573059fabf3 Mon Sep 17 00:00:00 2001
From: Aleix <aleixpellicer@gmail.com>
Date: Wed, 25 Dec 2024 12:56:49 +0100
Subject: [PATCH] Add V2C Trydan charger (#17878)

---
 charger/trydan.go                        | 188 +++++++++++++++++++++++
 templates/definition/charger/trydan.yaml |  11 ++
 2 files changed, 199 insertions(+)
 create mode 100644 charger/trydan.go
 create mode 100644 templates/definition/charger/trydan.yaml

diff --git a/charger/trydan.go b/charger/trydan.go
new file mode 100644
index 000000000..38f7205ac
--- /dev/null
+++ b/charger/trydan.go
@@ -0,0 +1,188 @@
+package charger
+
+// https://v2charge.com/trydan/
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/evcc-io/evcc/api"
+	"github.com/evcc-io/evcc/provider"
+	"github.com/evcc-io/evcc/util"
+	"github.com/evcc-io/evcc/util/request"
+	"github.com/evcc-io/evcc/util/sponsor"
+)
+
+type RealTimeData struct {
+	ID               string  `json:"ID"`
+	ChargeState      int     `json:"ChargeState"`
+	ReadyState       int     `json:"ReadyState"`
+	ChargePower      float64 `json:"ChargePower"`
+	ChargeEnergy     float64 `json:"ChargeEnergy"`
+	SlaveError       int     `json:"SlaveError"`
+	ChargeTime       int     `json:"ChargeTime"`
+	HousePower       float64 `json:"HousePower"`
+	FVPower          float64 `json:"FVPower"`
+	BatteryPower     float64 `json:"BatteryPower"`
+	Paused           int     `json:"Paused"`
+	Locked           int     `json:"Locked"`
+	Timer            int     `json:"Timer"`
+	Intensity        int     `json:"Intensity"`
+	Dynamic          int     `json:"Dynamic"`
+	MinIntensity     int     `json:"MinIntensity"`
+	MaxIntensity     int     `json:"MaxIntensity"`
+	PauseDynamic     int     `json:"PauseDynamic"`
+	FirmwareVersion  string  `json:"FirmwareVersion"`
+	DynamicPowerMode int     `json:"DynamicPowerMode"`
+	ContractedPower  int     `json:"ContractedPower"`
+}
+
+// Trydan charger implementation
+type Trydan struct {
+	*request.Helper
+	uri     string
+	statusG provider.Cacheable[RealTimeData]
+	current int
+	enabled bool
+}
+
+func init() {
+	registry.Add("trydan", NewTrydanFromConfig)
+}
+
+// NewTrydanFromConfig creates a Trydan charger from generic config
+func NewTrydanFromConfig(other map[string]interface{}) (api.Charger, error) {
+	cc := struct {
+		URI   string
+		Cache time.Duration
+	}{
+		Cache: time.Second,
+	}
+
+	if err := util.DecodeOther(other, &cc); err != nil {
+		return nil, err
+	}
+
+	if cc.URI == "" {
+		return nil, errors.New("missing uri")
+	}
+
+	return NewTrydan(cc.URI, cc.Cache)
+}
+
+// NewTrydan creates Trydan charger
+func NewTrydan(uri string, cache time.Duration) (api.Charger, error) {
+	if !sponsor.IsAuthorized() {
+		return nil, api.ErrSponsorRequired
+	}
+
+	c := &Trydan{
+		Helper: request.NewHelper(util.NewLogger("trydan")),
+		uri:    util.DefaultScheme(strings.TrimSuffix(uri, "/"), "http"),
+	}
+
+	c.statusG = provider.ResettableCached(func() (RealTimeData, error) {
+		var res RealTimeData
+		uri := fmt.Sprintf("%s/RealTimeData", c.uri)
+		err := c.GetJSON(uri, &res)
+		return res, err
+	}, cache)
+
+	return c, nil
+}
+
+// Status implements the api.Charger interface
+func (t Trydan) Status() (api.ChargeStatus, error) {
+	data, err := t.statusG.Get()
+	if err != nil {
+		return api.StatusNone, err
+	}
+	switch state := data.ChargeState; state {
+	case 0:
+		return api.StatusA, nil
+	case 1:
+		return api.StatusB, nil
+	case 2:
+		return api.StatusC, nil
+	default:
+		return api.StatusNone, fmt.Errorf("unknown status: %d", state)
+	}
+}
+
+// Enabled implements the api.Charger interface
+func (c Trydan) Enabled() (bool, error) {
+	data, err := c.statusG.Get()
+	return data.Paused == 0 && data.Locked == 0, err
+}
+
+func (c *Trydan) setValue(param string, value int) error {
+	uri := fmt.Sprintf("%s/write/%s=%d", c.uri, param, value)
+	res, err := c.GetBody(uri)
+	if str := string(res); err == nil && str != "OK" {
+		err = fmt.Errorf("command failed: %s", res)
+	}
+	return err
+}
+
+// Enable implements the api.Charger interface
+func (c Trydan) Enable(enable bool) error {
+	var pause int
+	if !enable {
+		pause = 1
+	}
+
+	if err := c.setValue("Paused", pause); err != nil {
+		return err
+	}
+	if err := c.setValue("Locked", pause); err != nil {
+		return err
+	}
+	c.enabled = enable
+
+	return nil
+}
+
+// MaxCurrent implements the api.Charger interface
+func (c Trydan) MaxCurrent(current int64) error {
+	err := c.setValue("Intensity", int(current))
+	if err == nil {
+		c.current = int(current)
+	}
+	return err
+}
+
+var _ api.ChargeRater = (*Trydan)(nil)
+
+// ChargedEnergy implements the api.ChargeRater interface
+func (c Trydan) ChargedEnergy() (float64, error) {
+	data, err := c.statusG.Get()
+	return data.ChargeEnergy, err
+}
+
+var _ api.ChargeTimer = (*Trydan)(nil)
+
+// ChargeDuration implements the api.ChargeTimer interface
+func (c Trydan) ChargeDuration() (time.Duration, error) {
+	data, err := c.statusG.Get()
+	return time.Duration(data.ChargeTime) * time.Second, err
+}
+
+var _ api.Meter = (*Trydan)(nil)
+
+// CurrentPower implements the api.Meter interface
+func (c Trydan) CurrentPower() (float64, error) {
+	data, err := c.statusG.Get()
+	return data.ChargePower, err
+}
+
+var _ api.Diagnosis = (*Trydan)(nil)
+
+// Diagnose implements the api.Diagnosis interface
+func (c *Trydan) Diagnose() {
+	data, err := c.statusG.Get()
+	if err != nil {
+		fmt.Printf("%#v", data)
+	}
+}
diff --git a/templates/definition/charger/trydan.yaml b/templates/definition/charger/trydan.yaml
new file mode 100644
index 000000000..1a82272b1
--- /dev/null
+++ b/templates/definition/charger/trydan.yaml
@@ -0,0 +1,11 @@
+template: trydan
+products:
+  - brand: V2C Trydan
+requirements:
+  description:
+    en: V2C trydan
+params:
+  - name: host
+render: |
+  type: trydan
+  uri: http://{{ .host }}