68 lines
1.1 KiB
Go
68 lines
1.1 KiB
Go
package tariff
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import (
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"errors"
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"slices"
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"time"
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"github.com/evcc-io/evcc/api"
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)
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type combined struct {
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tariffs []api.Tariff
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}
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func NewCombined(tariffs []api.Tariff) api.Tariff {
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return &combined{
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tariffs: tariffs,
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}
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}
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func (t *combined) Rates() (api.Rates, error) {
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var keys []time.Time
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for _, t := range t.tariffs {
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rr, err := t.Rates()
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if err != nil {
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return nil, err
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}
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for _, r := range rr {
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if !slices.ContainsFunc(keys, r.Start.Equal) {
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keys = append(keys, r.Start)
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}
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}
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}
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var res api.Rates
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keys = slices.SortedFunc(slices.Values(keys), time.Time.Compare)
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for _, ts := range keys {
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var rate api.Rate
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for _, t := range t.tariffs {
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r, err := At(t, ts)
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if err != nil {
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continue
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}
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if rate.Start.IsZero() {
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rate = r
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continue
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}
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if !r.End.Equal(rate.End) {
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return nil, errors.New("combined tariffs must have the same period length")
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}
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rate.Value += r.Value
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}
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res = append(res, rate)
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}
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return res, nil
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}
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func (t *combined) Type() api.TariffType {
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return api.TariffTypeSolar
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}
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