86 lines
1.7 KiB
Go
86 lines
1.7 KiB
Go
package plugin
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import (
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"context"
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"fmt"
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"github.com/evcc-io/evcc/api"
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meter "github.com/evcc-io/evcc/meter/config"
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"github.com/evcc-io/evcc/util"
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"github.com/evcc-io/evcc/util/config"
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)
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type meterPlugin struct {
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meter api.Meter
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method Method
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scale float64
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}
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func init() {
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registry.AddCtx("meter", NewMeterFromConfig)
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}
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// NewMeterFromConfig creates type conversion provider
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func NewMeterFromConfig(ctx context.Context, other map[string]any) (Plugin, error) {
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cc := struct {
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Config config.Typed
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Method
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Scale float64
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}{
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Scale: 1,
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}
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if err := util.DecodeOther(other, &cc); err != nil {
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return nil, err
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}
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meter, err := meter.NewFromConfig(ctx, cc.Config.Type, cc.Config.Other)
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if err != nil {
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return nil, err
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}
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o := &meterPlugin{
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meter: meter,
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method: cc.Method,
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scale: cc.Scale,
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}
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return o, nil
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}
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var _ FloatGetter = (*meterPlugin)(nil)
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func (o *meterPlugin) FloatGetter() (func() (float64, error), error) {
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err := fmt.Errorf("unsupported method: %s", o.method.String())
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switch o.method {
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case Energy:
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if !api.HasCap[api.MeterImport](o.meter) && !api.HasCap[api.MeterExport](o.meter) {
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return nil, err
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}
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case Soc:
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if !api.HasCap[api.Battery](o.meter) {
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return nil, err
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}
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}
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return func() (float64, error) {
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switch o.method {
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case Energy:
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if m, ok := api.Cap[api.MeterImport](o.meter); ok {
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f, err := m.ImportEnergy()
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return f * o.scale, err
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}
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m, _ := api.Cap[api.MeterExport](o.meter)
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f, err := m.ExportEnergy()
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return f * o.scale, err
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case Soc:
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m, _ := api.Cap[api.Battery](o.meter)
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f, err := m.Soc()
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return f * o.scale, err
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default:
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f, err := o.meter.CurrentPower()
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return f * o.scale, err
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}
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}, nil
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}
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