64 lines
1 KiB
Go
64 lines
1 KiB
Go
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package main
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import (
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"time"
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)
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const dailySupplyCharge = 105.750 / 100
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var (
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solarFeedInTariff = fixedTariff(8.471 / 100)
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tariff93 = &onOffPeakTariff{
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onPeak: 32.137 / 100,
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offPeak: 14.963 / 100,
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isPeak: (&weekdayHours{
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zone: time.FixedZone("UTC+10", +10*60*60),
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on: [24]bool{
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7: true,
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8: true,
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9: true,
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16: true,
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17: true,
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18: true,
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19: true,
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20: true,
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},
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}).isPeak,
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}
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)
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type tariff interface {
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pricePerKWh(time.Time) float64
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}
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type fixedTariff float64
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func (f fixedTariff) pricePerKWh(time.Time) float64 { return float64(f) }
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type onOffPeakTariff struct {
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onPeak, offPeak float64
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isPeak func(time.Time) bool
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}
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func (o *onOffPeakTariff) pricePerKWh(t time.Time) float64 {
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if o.isPeak(t) {
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return o.onPeak
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}
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return o.offPeak
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}
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type weekdayHours struct {
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zone *time.Location
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on [24]bool
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}
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func (w *weekdayHours) isPeak(t time.Time) bool {
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t = t.In(w.zone)
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switch t.Weekday() {
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case time.Saturday, time.Sunday:
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return false
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default:
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return w.on[t.Hour()]
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}
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}
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