93 lines
1.9 KiB
Go
93 lines
1.9 KiB
Go
package tariff
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import (
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"slices"
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"sync"
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"time"
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"github.com/cenkalti/backoff/v4"
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"github.com/evcc-io/evcc/api"
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"github.com/evcc-io/evcc/tariff/smartenergy"
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"github.com/evcc-io/evcc/util"
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"github.com/evcc-io/evcc/util/request"
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)
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type SmartEnergy struct {
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*embed
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log *util.Logger
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data *util.Monitor[api.Rates]
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}
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var _ api.Tariff = (*SmartEnergy)(nil)
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func init() {
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registry.Add("smartenergy", NewSmartEnergyFromConfig)
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}
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func NewSmartEnergyFromConfig(other map[string]interface{}) (api.Tariff, error) {
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var cc struct {
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embed `mapstructure:",squash"`
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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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t := &SmartEnergy{
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embed: &cc.embed,
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log: util.NewLogger("smartenergy"),
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data: util.NewMonitor[api.Rates](2 * time.Hour),
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}
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done := make(chan error)
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go t.run(done)
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err := <-done
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return t, err
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}
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func (t *SmartEnergy) run(done chan error) {
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var once sync.Once
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client := request.NewHelper(t.log)
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tick := time.NewTicker(time.Hour)
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for ; true; <-tick.C {
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var res smartenergy.Prices
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if err := backoff.Retry(func() error {
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return backoffPermanentError(client.GetJSON(smartenergy.URI, &res))
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}, bo()); err != nil {
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once.Do(func() { done <- err })
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t.log.ERROR.Println(err)
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continue
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}
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data := make(api.Rates, 0, len(res.Data))
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for _, r := range res.Data {
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ar := api.Rate{
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Start: r.Date.Local(),
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End: r.Date.Add(15 * time.Minute).Local(),
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Price: t.totalPrice(r.Value / 100),
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}
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data = append(data, ar)
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}
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mergeRates(t.data, data)
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once.Do(func() { close(done) })
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}
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}
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// Rates implements the api.Tariff interface
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func (t *SmartEnergy) Rates() (api.Rates, error) {
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var res api.Rates
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err := t.data.GetFunc(func(val api.Rates) {
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res = slices.Clone(val)
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})
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return res, err
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}
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// Type implements the api.Tariff interface
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func (t *SmartEnergy) Type() api.TariffType {
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return api.TariffTypePriceForecast
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}
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