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chrispr
2020-07-18 21:44:27 -04:00
parent 8a1141b373
commit fea891a268
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lib/nightscout/com/eveningoutpost/dexdrip/G5Model/SensorDays.java Normal file
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package com.eveningoutpost.dexdrip.G5Model;
import android.text.SpannableString;
import com.eveningoutpost.dexdrip.Models.Sensor;
import com.eveningoutpost.dexdrip.R;
import com.eveningoutpost.dexdrip.UtilityModels.Constants;
import com.eveningoutpost.dexdrip.UtilityModels.Pref;
import com.eveningoutpost.dexdrip.UtilityModels.StatusItem.Highlight;
import com.eveningoutpost.dexdrip.ui.helpers.Span;
import com.eveningoutpost.dexdrip.utils.DexCollectionType;
import com.eveningoutpost.dexdrip.xdrip;
import java.text.MessageFormat;
import java.text.SimpleDateFormat;
import java.util.HashMap;
import java.util.Locale;
import lombok.Getter;
import lombok.val;
import static com.eveningoutpost.dexdrip.G5Model.Ob1G5StateMachine.getFirmwareXDetails;
import static com.eveningoutpost.dexdrip.Models.JoH.msSince;
import static com.eveningoutpost.dexdrip.Models.JoH.roundDouble;
import static com.eveningoutpost.dexdrip.Models.JoH.tsl;
import static com.eveningoutpost.dexdrip.Services.G5BaseService.usingG6;
import static com.eveningoutpost.dexdrip.Services.Ob1G5CollectionService.getTransmitterID;
import static com.eveningoutpost.dexdrip.Services.Ob1G5CollectionService.usingNativeMode;
import static com.eveningoutpost.dexdrip.UtilityModels.Constants.DAY_IN_MS;
import static com.eveningoutpost.dexdrip.utils.DexCollectionType.getDexCollectionType;
import static com.eveningoutpost.dexdrip.utils.DexCollectionType.hasDexcomRaw;
import static com.eveningoutpost.dexdrip.utils.DexCollectionType.hasLibre;
// jamorham
// helper class to deal with sensor expiry
public class SensorDays {
private static final String TAG = "SensorDays";
private static final long UNKNOWN = -1;
private static final int USE_DEXCOM_STRATEGY = 5;
private static final int USE_LIBRE_STRATEGY = 6;
private static final long CAL_THRESHOLD1 = DAY_IN_MS * 4;
private static final long CAL_THRESHOLD2 = Constants.HOUR_IN_MS * 18;
private static final HashMap<String, SensorDays> cache = new HashMap<>();
@Getter
private long period = UNKNOWN;
private long created = 0;
private int strategy = 0;
// load current config and compute
public static SensorDays get() {
val type = getDexCollectionType();
val tx_id = getTransmitterID();
return get(type, tx_id);
}
// compute based on type
public static SensorDays get(final DexCollectionType type, final String tx_id) {
// get cached result
val result = cache.get(type.toString() + tx_id);
if (result != null && result.cacheValid()) return result;
val ths = new SensorDays();
if (hasLibre(type)) {
ths.period = Constants.DAY_IN_MS * 14; // TODO 10 day sensors?
ths.strategy = USE_LIBRE_STRATEGY;
} else if (hasDexcomRaw(type)) {
ths.strategy = USE_DEXCOM_STRATEGY;
val vr2 = (VersionRequest2RxMessage)
getFirmwareXDetails(tx_id, 2);
if (vr2 != null) {
ths.period = Constants.DAY_IN_MS * vr2.typicalSensorDays;
} else {
if (usingG6()) {
ths.period = Constants.DAY_IN_MS * 10; // G6 default
} else {
ths.period = Constants.DAY_IN_MS * 7; // G5
}
}
} else {
// unknown type
}
ths.created = tsl();
cache.put(type.toString() + tx_id, ths);
return ths;
}
private long getDexcomStart() {
if (usingNativeMode()) {
return DexSessionKeeper.getStart();
} else {
try {
// In non-native mode the expiration is a guide only
return Sensor.currentSensor().started_at;
} catch (Exception e) {
return -1;
}
}
}
private long getLibreStart() {
try {
val age_minutes = Pref.getInt("nfc_sensor_age", -50000);
if (age_minutes > 0) {
return tsl() - (age_minutes * Constants.MINUTE_IN_MS);
} else {
return Sensor.currentSensor().started_at;
}
} catch (Exception e) {
return -1;
}
}
private long getStart() {
switch (strategy) {
case USE_DEXCOM_STRATEGY:
return getDexcomStart();
case USE_LIBRE_STRATEGY:
return getLibreStart();
default:
return 0; // very large error default will be caught by sanity check
}
}
private boolean isStarted() {
return getStart() > 0;
}
// returns 0 if invalid
long getRemainingSensorPeriodInMs() {
//UserError.Log.d(TAG, "Get start debug returns: " + JoH.dateTimeText(getStart()));
if (isValid()) {
val elapsed = msSince(getStart());
long remaining = period - elapsed;
// sanity check
if ((remaining < 0) || (remaining > period)) {
remaining = 0;
}
return remaining;
} else {
return 0;
}
}
long getSensorEndTimestamp() {
if (isValid()) {
return getStart() + period;
} else {
return 0;
}
}
// Add resolution / update cache
public SpannableString getSpannable() {
val expiryMs = getRemainingSensorPeriodInMs();
if (expiryMs > 0) {
if (expiryMs > CAL_THRESHOLD1) {
val fmt = xdrip.gs(R.string.expires_days);
return new SpannableString(MessageFormat.format(fmt, roundDouble((double) expiryMs / DAY_IN_MS, 1)));
} else {
// expiring soon
val niceTime = new SimpleDateFormat(expiryMs < CAL_THRESHOLD2 ? "h:mm a" : "EEE, h:mm a", Locale.getDefault()).format(getSensorEndTimestamp());
return Span.colorSpan(MessageFormat.format(xdrip.gs(R.string.expires_at), niceTime), expiryMs < CAL_THRESHOLD2 ? Highlight.BAD.color() : Highlight.NOTICE.color());
}
}
return new SpannableString("");
}
public boolean isValid() {
return isKnown() && isSessionLive() && isStarted();
}
private boolean isSessionLive() {
return Sensor.isActive();
}
boolean isKnown() {
return period != UNKNOWN;
}
boolean cacheValid() {
return msSince(created) < Constants.MINUTE_IN_MS * 10;
}
void invalidateCache() {
created = -1;
}
}