Add steps counter sensor (#792)

* Add steps sensor

* Fix permission and set correct icon

app/src/main/AndroidManifest.xml

@@ -15,6 +15,7 @@
     <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
     <uses-permission android:name="android.permission.NFC" />
     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
+    <uses-permission android:name="android.permission.ACTIVITY_RECOGNITION" />
     
     <uses-feature android:name="android.hardware.touchscreen" android:required="false"/>
     <uses-feature android:name="android.hardware.telephony" android:required="false"/>

app/src/main/java/io/homeassistant/companion/android/sensors/SensorReceiver.kt

@@ -27,6 +27,7 @@ class SensorReceiver : BroadcastReceiver() {
             LightSensorManager(),
             NextAlarmManager(),
             PhoneStateSensorManager(),
+            StepsSensorManager(),
             StorageSensorManager()
         )
     }

app/src/main/java/io/homeassistant/companion/android/sensors/StepsSensorManager.kt

@@ -0,0 +1,90 @@
+package io.homeassistant.companion.android.sensors
+
+import android.Manifest
+import android.content.Context
+import android.content.Context.SENSOR_SERVICE
+import android.hardware.Sensor
+import android.hardware.SensorEvent
+import android.hardware.SensorEventListener
+import android.hardware.SensorManager.SENSOR_DELAY_NORMAL
+import android.os.Build
+import io.homeassistant.companion.android.domain.integration.SensorRegistration
+import kotlin.math.roundToInt
+
+class StepsSensorManager : SensorManager, SensorEventListener {
+    companion object {
+
+        private const val TAG = "StepsSensor"
+        private val stepsSensor = SensorManager.BasicSensor(
+            "steps_sensor",
+            "sensor",
+            "Steps Sensor",
+            unitOfMeasurement = "steps"
+        )
+        private var stepsReading: String = "unavailable"
+        lateinit var mySensorManager: android.hardware.SensorManager
+    }
+
+    override val name: String
+        get() = "Steps Sensors"
+
+    override val availableSensors: List<SensorManager.BasicSensor>
+        get() = listOf(stepsSensor)
+
+    override fun requiredPermissions(): Array<String> {
+        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            arrayOf(
+                Manifest.permission.ACTIVITY_RECOGNITION
+            )
+        } else {
+            arrayOf()
+        }
+    }
+
+    override fun getSensorData(
+        context: Context,
+        sensorId: String
+    ): SensorRegistration<Any> {
+        return when (sensorId) {
+            stepsSensor.id -> getStepsSensor(context)
+            else -> throw IllegalArgumentException("Unknown sensorId: $sensorId")
+        }
+    }
+
+    private fun getStepsSensor(context: Context): SensorRegistration<Any> {
+
+        if (checkPermission(context)) {
+            mySensorManager =
+                context.getSystemService(SENSOR_SERVICE) as android.hardware.SensorManager
+
+            val stepsSensors = mySensorManager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER)
+            if (stepsSensors != null) {
+                mySensorManager.registerListener(
+                    this,
+                    stepsSensors,
+                    SENSOR_DELAY_NORMAL
+                )
+            }
+        }
+        val icon = "mdi:walk"
+
+        return stepsSensor.toSensorRegistration(
+            stepsReading,
+            icon,
+            mapOf()
+        )
+    }
+
+    override fun onAccuracyChanged(p0: Sensor?, p1: Int) {
+        // Nothing happening here but we are required to call onAccuracyChanged for sensor events
+    }
+
+    override fun onSensorChanged(event: SensorEvent?) {
+        if (event != null) {
+            if (event.sensor.type == Sensor.TYPE_STEP_COUNTER) {
+                stepsReading = event.values[0].roundToInt().toString()
+            }
+        }
+        mySensorManager.unregisterListener(this)
+    }
+}