UM25: added notification on below current threshold

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSettingsPreferenceConst.java

@@ -178,6 +178,9 @@ public class DeviceSettingsPreferenceConst {
     public static final String PREFS_ACTIVITY_IN_DEVICE_CARD_DISTANCE = "prefs_activity_in_device_card_distance";
     public static final String PREFS_DEVICE_CHARTS_TABS = "charts_tabs";
 
+    public static final String PREF_UM25_SHOW_THRESHOLD_NOTIFICATION = "um25_current_threshold_notify";
+    public static final String PREF_UM25_SHOW_THRESHOLD = "um25_current_threshold";
+
     public static final String PREF_SOUNDS = "sounds";
     public static final String PREF_AUTH_KEY = "authkey";
     public static final String PREF_USER_FITNESS_GOAL = "fitness_goal";

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSpecificSettingsFragment.java

@@ -456,6 +456,9 @@ public class DeviceSpecificSettingsFragment extends PreferenceFragmentCompat imp
         addPreferenceHandlerFor(PREF_QC35_NOISE_CANCELLING_LEVEL);
         addPreferenceHandlerFor(PREF_USER_FITNESS_GOAL);
 
+        addPreferenceHandlerFor(PREF_UM25_SHOW_THRESHOLD_NOTIFICATION);
+        addPreferenceHandlerFor(PREF_UM25_SHOW_THRESHOLD);
+
         String sleepTimeState = prefs.getString(PREF_SLEEP_TIME, PREF_DO_NOT_DISTURB_OFF);
         boolean sleepTimeScheduled = sleepTimeState.equals(PREF_DO_NOT_DISTURB_SCHEDULED);
 

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/um25/Coordinator/UM25Coordinator.java

@@ -16,6 +16,7 @@ import java.util.Collections;
 
 import cyanogenmod.app.CustomTile;
 import nodomain.freeyourgadget.gadgetbridge.GBException;
+import nodomain.freeyourgadget.gadgetbridge.R;
 import nodomain.freeyourgadget.gadgetbridge.devices.AbstractDeviceCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.DeviceCoordinator;
 import nodomain.freeyourgadget.gadgetbridge.devices.InstallHandler;
@@ -55,6 +56,13 @@ public class UM25Coordinator extends AbstractDeviceCoordinator {
         return DeviceType.UNKNOWN;
     }
 
+    @Override
+    public int[] getSupportedDeviceSpecificSettings(GBDevice device) {
+        return new int[]{
+                R.xml.devicesettings_um25
+        };
+    }
+
     @Override
     public DeviceType getDeviceType() {
         return DeviceType.UM25;

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/um25/Support/UM25Support.java

@@ -1,12 +1,15 @@
 package nodomain.freeyourgadget.gadgetbridge.service.devices.um25.Support;
 
+import android.app.Notification;
 import android.bluetooth.BluetoothGatt;
 import android.bluetooth.BluetoothGattCharacteristic;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.SharedPreferences;
 
+import androidx.core.app.NotificationCompat;
 import androidx.localbroadcastmanager.content.LocalBroadcastManager;
 
 import org.slf4j.Logger;
@@ -19,12 +22,16 @@ import java.util.UUID;
 import java.util.concurrent.ScheduledThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 
+import nodomain.freeyourgadget.gadgetbridge.GBApplication;
+import nodomain.freeyourgadget.gadgetbridge.R;
+import nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst;
 import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
 import nodomain.freeyourgadget.gadgetbridge.service.btle.BtLEAction;
 import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder;
 import nodomain.freeyourgadget.gadgetbridge.service.btle.actions.SetDeviceStateAction;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.um25.Data.CaptureGroup;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.um25.Data.MeasurementData;
+import nodomain.freeyourgadget.gadgetbridge.util.GB;
 import nodomain.freeyourgadget.gadgetbridge.util.StringUtils;
 
 public class UM25Support extends UM25BaseSupport {
@@ -44,6 +51,12 @@ public class UM25Support extends UM25BaseSupport {
 
     private static final  Logger logger = LoggerFactory.getLogger(UM25Support.class);
 
+    SharedPreferences preferences;
+
+    private boolean notifyOnCurrentThreshold;
+    private int notificationCurrentThreshold;
+    private boolean wasOverNotificationCurrent = false;
+    private long lastOverThresholdTimestamp = 0;
 
     public UM25Support() {
         super(logger);
@@ -63,8 +76,22 @@ public class UM25Support extends UM25BaseSupport {
         }
     };
 
+    void readPreferences(){
+        notifyOnCurrentThreshold = preferences.getBoolean(DeviceSettingsPreferenceConst.PREF_UM25_SHOW_THRESHOLD_NOTIFICATION, false);
+        notificationCurrentThreshold = Integer.parseInt(preferences.getString(DeviceSettingsPreferenceConst.PREF_UM25_SHOW_THRESHOLD, "100"));
+    }
+
+    @Override
+    public void onSendConfiguration(String config) {
+        readPreferences();
+    }
+
     @Override
     protected TransactionBuilder initializeDevice(TransactionBuilder builder) {
+        preferences = GBApplication.getDeviceSpecificSharedPrefs(getDevice().getAddress());
+
+        readPreferences();
+
         return builder
                 .add(new SetDeviceStateAction(getDevice(), GBDevice.State.INITIALIZING, getContext()))
                 .notify(getCharacteristic(UUID.fromString(UUID_CHAR)), true)
@@ -132,6 +159,46 @@ public class UM25Support extends UM25BaseSupport {
         return true;
     }
 
+    private void handleCurrentNotification(int currentMa){
+        logger.debug("current: " + currentMa);
+
+        if(!notifyOnCurrentThreshold){
+            return;
+        }
+
+        boolean isOverNotificationCurrent = currentMa > notificationCurrentThreshold;
+
+        long now = System.currentTimeMillis();
+
+        if(isOverNotificationCurrent){
+            lastOverThresholdTimestamp = now;
+            wasOverNotificationCurrent = true;
+            return;
+        }
+        long deltaSinceOverThreshold = now - lastOverThresholdTimestamp;
+
+        if(deltaSinceOverThreshold < 5000){
+            // must be below threshold for over certain time before triggering notification
+            return;
+        }
+
+        if(wasOverNotificationCurrent){
+            // handle change from over threshold to below threshold
+            wasOverNotificationCurrent = false;
+            Notification notification = new NotificationCompat.Builder(getContext(), GB.NOTIFICATION_CHANNEL_HIGH_PRIORITY_ID)
+                    .setSmallIcon(R.drawable.ic_notification_low_battery)
+                    .setContentTitle("USB current")
+                    .setContentText("USB current below threshold")
+                    .build();
+
+            GB.notify(
+                    GB.NOTIFICATION_ID_LOW_BATTERY,
+                    notification,
+                    getContext()
+            );
+        }
+    }
+
     private void handlePayload(ByteBuffer payload){
         String payloadString = StringUtils.bytesToHex(payload.array());
         payloadString = payloadString.replaceAll("(..)", "$1 ");
@@ -163,8 +230,6 @@ public class UM25Support extends UM25BaseSupport {
         int chargingSeconds = payload.getInt(112);
         int cableResistance = payload.getInt(122);
 
-        logger.debug("variable: " + chargedCurrent);
-
         MeasurementData data = new MeasurementData(
                 voltage,
                 current,
@@ -185,6 +250,8 @@ public class UM25Support extends UM25BaseSupport {
 
         measurementIntent.putExtra(EXTRA_KEY_MEASUREMENT_DATA, data);
 
+        handleCurrentNotification(current / 10);
+
         LocalBroadcastManager.getInstance(getContext())
                 .sendBroadcast(measurementIntent);
     }

app/src/main/res/xml/devicesettings_um25.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
+    <CheckBoxPreference
+        android:title="Notify if below current threshold"
+        android:key="um25_current_threshold_notify" />
+    <EditTextPreference
+        android:title="Current threshold im mA"
+        android:key="um25_current_threshold"
+        android:inputType="number"
+        android:defaultValue="100"/>
+</PreferenceScreen>