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Add LocalInsulin class and update BolusExtension with iobCalc done with LocalInsulin

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This commit is contained in:
Philoul 2022-05-05 21:56:28 +02:00
parent 50d60e1302
commit a708c45bfb
2 changed files with 52 additions and 0 deletions
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45
core/src/main/java/info/nightscout/androidaps/data/LocalInsulin.kt Normal file
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@ -0,0 +1,45 @@
package info.nightscout.androidaps.data
import info.nightscout.androidaps.database.entities.Bolus
import kotlin.math.exp
import kotlin.math.pow
class LocalInsulin constructor(val name:String?, val peak:Int = DEFAULT_PEAK, private val userDefinedDia: Double = DEFAULT_DIA) {
val dia
get(): Double {
val dia = userDefinedDia
return if (dia >= MIN_DIA) {
dia
} else {
MIN_DIA
}
}
val duration
get() = (60 * 60 * 1000L * dia).toLong()
fun iobCalcForTreatment(bolus: Bolus, time: Long): Iob {
val result = Iob()
if (bolus.amount != 0.0) {
val bolusTime = bolus.timestamp
val t = (time - bolusTime) / 1000.0 / 60.0
val td = dia * 60 //getDIA() always >= MIN_DIA
val tp = peak.toDouble()
// force the IOB to 0 if over DIA hours have passed
if (t < td) {
val tau = tp * (1 - tp / td) / (1 - 2 * tp / td)
val a = 2 * tau / td
val S = 1 / (1 - a + (1 + a) * exp(-td / tau))
result.activityContrib = bolus.amount * (S / tau.pow(2.0)) * t * (1 - t / td) * exp(-t / tau)
result.iobContrib = bolus.amount * (1 - S * (1 - a) * ((t.pow(2.0) / (tau * td * (1 - a)) - t / tau - 1) * Math.exp(-t / tau) + 1))
}
}
return result
}
companion object {
private const val MIN_DIA = 5.0
private const val DEFAULT_DIA = 6.0
private const val DEFAULT_PEAK = 75
}
}

7
core/src/main/java/info/nightscout/androidaps/extensions/BolusExtension.kt
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@ -1,6 +1,7 @@
package info.nightscout.androidaps.extensions
import info.nightscout.androidaps.data.Iob
import info.nightscout.androidaps.data.LocalInsulin
import info.nightscout.androidaps.database.embedments.InterfaceIDs
import info.nightscout.androidaps.database.entities.Bolus
import info.nightscout.androidaps.database.entities.TherapyEvent
@ -16,6 +17,12 @@ fun Bolus.iobCalc(activePlugin: ActivePlugin, time: Long, dia: Double): Iob {
return insulinInterface.iobCalcForTreatment(this, time, dia)
}
// Add specific calculation for Autotune (reference localInsulin for Peak/dia)
fun Bolus.iobCalc(time: Long, localInsulin: LocalInsulin): Iob {
if (!isValid || type == Bolus.Type.PRIMING ) return Iob()
return localInsulin.iobCalcForTreatment(this, time)
}
fun Bolus.toJson(isAdd: Boolean, dateUtil: DateUtil): JSONObject =
JSONObject()
.put("eventType", if (type == Bolus.Type.SMB) TherapyEvent.Type.CORRECTION_BOLUS.text else TherapyEvent.Type.MEAL_BOLUS.text)