106 lines
2.3 KiB
Go
106 lines
2.3 KiB
Go
package core
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import (
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"github.com/evcc-io/evcc/api"
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"github.com/evcc-io/evcc/core/db"
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)
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func (lp *Loadpoint) chargeMeterTotal() float64 {
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m, ok := lp.chargeMeter.(api.MeterEnergy)
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if !ok {
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return 0
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}
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f, err := m.TotalEnergy()
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if err != nil {
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lp.log.ERROR.Printf("charge meter total import: %v", err)
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return 0
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}
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lp.log.DEBUG.Printf("charge meter total import: %.3fkWh", f)
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return f
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}
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// createSession creates a charging session. The created timestamp is empty until set by evChargeStartHandler.
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// The session is not persisted yet. That will only happen when stopSession is called.
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func (lp *Loadpoint) createSession() {
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// test guard
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if lp.db == nil || lp.session != nil {
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return
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}
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lp.session = lp.db.Session(lp.chargeMeterTotal())
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if lp.vehicle != nil {
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lp.session.Vehicle = lp.vehicle.Title()
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}
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if c, ok := lp.charger.(api.Identifier); ok {
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if id, err := c.Identify(); err == nil {
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lp.session.Identifier = id
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}
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}
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}
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// stopSession ends a charging session segment and persists the session.
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func (lp *Loadpoint) stopSession() {
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s := lp.session
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// test guard
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if lp.db == nil || s == nil {
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return
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}
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// abort the session if charging has never started
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if s.Created.IsZero() {
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return
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}
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s.Finished = lp.clock.Now()
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meterStop := lp.chargeMeterTotal()
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if meterStop > 0 {
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s.MeterStop = &meterStop
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}
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if chargedEnergy := lp.getChargedEnergy() / 1e3; chargedEnergy > s.ChargedEnergy {
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lp.sessionEnergy.Update(chargedEnergy)
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}
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solarPerc := lp.sessionEnergy.SolarPercentage()
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s.SolarPercentage = &solarPerc
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s.Price = lp.sessionEnergy.Price()
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s.PricePerKWh = lp.sessionEnergy.PricePerKWh()
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s.Co2PerKWh = lp.sessionEnergy.Co2PerKWh()
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s.ChargedEnergy = lp.sessionEnergy.TotalWh() / 1e3
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lp.db.Persist(s)
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}
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type sessionOption func(*db.Session)
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// updateSession updates any parameter of a charging session and persists the session.
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func (lp *Loadpoint) updateSession(opts ...sessionOption) {
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// test guard
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if lp.db == nil || lp.session == nil {
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return
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}
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for _, opt := range opts {
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opt(lp.session)
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}
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if !lp.session.Created.IsZero() {
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lp.db.Persist(lp.session)
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}
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}
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// clearSession clears the charging session without persisting it.
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func (lp *Loadpoint) clearSession() {
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// test guard
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if lp.db == nil {
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return
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}
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lp.session = nil
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}
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