149 lines
2.9 KiB
Go
149 lines
2.9 KiB
Go
package tariff
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import (
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"context"
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"errors"
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"sync"
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"time"
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"github.com/evcc-io/evcc/api"
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"github.com/evcc-io/evcc/meter/tibber"
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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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"github.com/shurcooL/graphql"
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"golang.org/x/exp/slices"
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)
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type Tibber struct {
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mux sync.Mutex
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log *util.Logger
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homeID string
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unit string
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client *tibber.Client
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data api.Rates
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updated time.Time
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}
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var _ api.Tariff = (*Tibber)(nil)
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func init() {
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registry.Add("tibber", NewTibberFromConfig)
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}
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func NewTibberFromConfig(other map[string]interface{}) (api.Tariff, error) {
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var cc struct {
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Token string
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HomeID string
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Unit string
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Cheap any // TODO deprecated
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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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if cc.Token == "" {
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return nil, errors.New("missing token")
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}
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log := util.NewLogger("tibber").Redact(cc.Token, cc.HomeID)
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t := &Tibber{
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log: log,
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homeID: cc.HomeID,
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unit: cc.Unit,
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client: tibber.NewClient(log, cc.Token),
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}
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if t.homeID == "" || t.unit == "" {
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home, err := t.client.DefaultHome(t.homeID)
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if err != nil {
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return nil, err
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}
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if t.homeID == "" {
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t.homeID = home.ID
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}
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if t.unit == "" {
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t.unit = home.CurrentSubscription.PriceInfo.Current.Currency
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}
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}
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// TODO deprecated
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if cc.Cheap != nil {
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t.log.WARN.Println("cheap rate configuration has been replaced by target charging and is deprecated")
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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 *Tibber) run(done chan error) {
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var once sync.Once
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var res struct {
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Viewer struct {
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Home struct {
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ID string
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TimeZone string
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CurrentSubscription tibber.Subscription
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} `graphql:"home(id: $id)"`
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}
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}
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v := map[string]interface{}{
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"id": graphql.ID(t.homeID),
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}
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for ; true; <-time.Tick(time.Hour) {
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ctx, cancel := context.WithTimeout(context.Background(), request.Timeout)
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err := t.client.Query(ctx, &res, v)
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cancel()
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if 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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once.Do(func() { close(done) })
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t.mux.Lock()
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t.updated = time.Now()
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pi := res.Viewer.Home.CurrentSubscription.PriceInfo
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t.data = make(api.Rates, 0, len(pi.Today)+len(pi.Tomorrow))
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t.data = append(t.rates(pi.Today), t.rates(pi.Tomorrow)...)
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t.mux.Unlock()
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}
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}
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func (t *Tibber) rates(pi []tibber.Price) api.Rates {
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data := make(api.Rates, 0, len(pi))
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for _, r := range pi {
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ar := api.Rate{
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Start: r.StartsAt.Local(),
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End: r.StartsAt.Add(time.Hour).Local(),
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Price: r.Total,
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}
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data = append(data, ar)
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}
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return data
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}
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// Unit implements the api.Tariff interface
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func (t *Tibber) Unit() string {
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return t.unit
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}
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// Rates implements the api.Tariff interface
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func (t *Tibber) Rates() (api.Rates, error) {
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t.mux.Lock()
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defer t.mux.Unlock()
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return slices.Clone(t.data), outdatedError(t.updated, time.Hour)
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}
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