feat: use system PowerManager API to query for low battery status

app/src/main/java/openfoodfacts/github/scrachx/openfood/features/compare/ProductCompareAdapter.kt

@@ -52,7 +52,7 @@ import openfoodfacts.github.scrachx.openfood.utils.getEcoscoreResource
 import openfoodfacts.github.scrachx.openfood.utils.getNovaGroupResource
 import openfoodfacts.github.scrachx.openfood.utils.getNutriScoreResource
 import openfoodfacts.github.scrachx.openfood.utils.isHardwareCameraInstalled
-import openfoodfacts.github.scrachx.openfood.utils.isLowBatteryMode
+import openfoodfacts.github.scrachx.openfood.utils.shouldLoadImages
 import openfoodfacts.github.scrachx.openfood.utils.toPx
 import pl.aprilapps.easyphotopicker.EasyImage
 import java.io.File
@@ -152,7 +152,7 @@ class ProductCompareAdapter(
         }
         if (!imageUrl.isNullOrBlank()) {
             holder.binding.productComparisonLabel.visibility = View.INVISIBLE
-            if (!activity.isLowBatteryMode()) {
+            if (activity.shouldLoadImages()) {
                 picasso.load(imageUrl).into(holder.binding.productComparisonImage)
             } else {
                 holder.binding.productComparisonImage.visibility = View.GONE

app/src/main/java/openfoodfacts/github/scrachx/openfood/features/product/view/environment/EnvironmentProductFragment.kt

@@ -35,8 +35,8 @@ import openfoodfacts.github.scrachx.openfood.repositories.ProductRepository
 import openfoodfacts.github.scrachx.openfood.utils.LocaleManager
 import openfoodfacts.github.scrachx.openfood.utils.PhotoReceiverHandler
 import openfoodfacts.github.scrachx.openfood.utils.getRoundNumber
-import openfoodfacts.github.scrachx.openfood.utils.isBatteryLevelLow
-import openfoodfacts.github.scrachx.openfood.utils.isDisableImageLoad
+import openfoodfacts.github.scrachx.openfood.utils.isPowerSaveMode
+import openfoodfacts.github.scrachx.openfood.utils.isImageLoadingDisabled
 import openfoodfacts.github.scrachx.openfood.utils.isUserSet
 import openfoodfacts.github.scrachx.openfood.utils.requireProductState
 import java.io.File
@@ -90,7 +90,7 @@ class EnvironmentProductFragment : BaseFragment() {
         binding.imageViewPackaging.setOnClickListener { openFullScreenImage() }
 
         // If Battery Level is low and the user has checked the Disable Image in Preferences , then set isLowBatteryMode to true
-        if (requireContext().isDisableImageLoad() && requireContext().isBatteryLevelLow()) {
+        if (requireContext().isImageLoadingDisabled() && requireContext().isPowerSaveMode()) {
             isLowBatteryMode = true
         }
 

app/src/main/java/openfoodfacts/github/scrachx/openfood/features/product/view/ingredients/IngredientsProductFragment.kt

@@ -78,7 +78,7 @@ import openfoodfacts.github.scrachx.openfood.utils.SearchType
 import openfoodfacts.github.scrachx.openfood.utils.getNovaGroupExplanation
 import openfoodfacts.github.scrachx.openfood.utils.getNovaGroupResource
 import openfoodfacts.github.scrachx.openfood.utils.getSendProduct
-import openfoodfacts.github.scrachx.openfood.utils.isBatteryLevelLow
+import openfoodfacts.github.scrachx.openfood.utils.isPowerSaveMode
 import openfoodfacts.github.scrachx.openfood.utils.isUserSet
 import openfoodfacts.github.scrachx.openfood.utils.requireProductState
 import openfoodfacts.github.scrachx.openfood.utils.showBottomSheet
@@ -270,7 +270,7 @@ class IngredientsProductFragment : BaseFragment() {
             binding.changeIngImg.visibility = View.VISIBLE
 
             // Load Image if isLowBatteryMode is false
-            if (!requireContext().isBatteryLevelLow()) {
+            if (!requireContext().isPowerSaveMode()) {
                 picasso.load(product.getImageIngredientsUrl(langCode)).into(binding.imageViewIngredients)
             } else {
                 binding.imageViewIngredients.visibility = View.GONE

app/src/main/java/openfoodfacts/github/scrachx/openfood/features/product/view/nutrition/NutritionProductFragment.kt

@@ -101,8 +101,8 @@ import openfoodfacts.github.scrachx.openfood.utils.getRoundNumber
 import openfoodfacts.github.scrachx.openfood.utils.getServingInL
 import openfoodfacts.github.scrachx.openfood.utils.getServingInOz
 import openfoodfacts.github.scrachx.openfood.utils.hideKeyboard
-import openfoodfacts.github.scrachx.openfood.utils.isBatteryLevelLow
-import openfoodfacts.github.scrachx.openfood.utils.isDisableImageLoad
+import openfoodfacts.github.scrachx.openfood.utils.isPowerSaveMode
+import openfoodfacts.github.scrachx.openfood.utils.isImageLoadingDisabled
 import openfoodfacts.github.scrachx.openfood.utils.isPerServingInLiter
 import openfoodfacts.github.scrachx.openfood.utils.isUserSet
 import openfoodfacts.github.scrachx.openfood.utils.requireProductState
@@ -143,7 +143,7 @@ class NutritionProductFragment : BaseFragment(), CustomTabActivityHelper.Connect
      * Boolean to determine if image should be loaded or not
      */
     private val isLowBatteryMode by lazy {
-        requireContext().isDisableImageLoad() && requireContext().isBatteryLevelLow()
+        requireContext().isImageLoadingDisabled() && requireContext().isPowerSaveMode()
     }
 
     private var nutrientsImageUrl: String? = null

app/src/main/java/openfoodfacts/github/scrachx/openfood/features/product/view/summary/SummaryProductFragment.kt

@@ -112,8 +112,8 @@ import openfoodfacts.github.scrachx.openfood.utils.getEcoscoreResource
 import openfoodfacts.github.scrachx.openfood.utils.getNovaGroupResource
 import openfoodfacts.github.scrachx.openfood.utils.getNutriScoreResource
 import openfoodfacts.github.scrachx.openfood.utils.getProductBrandsQuantityDetails
-import openfoodfacts.github.scrachx.openfood.utils.isBatteryLevelLow
-import openfoodfacts.github.scrachx.openfood.utils.isDisableImageLoad
+import openfoodfacts.github.scrachx.openfood.utils.isPowerSaveMode
+import openfoodfacts.github.scrachx.openfood.utils.isImageLoadingDisabled
 import openfoodfacts.github.scrachx.openfood.utils.isHardwareCameraInstalled
 import openfoodfacts.github.scrachx.openfood.utils.isPerServingInLiter
 import openfoodfacts.github.scrachx.openfood.utils.isUserSet
@@ -173,7 +173,7 @@ class SummaryProductFragment : BaseFragment(), ISummaryProductPresenter.View {
     private var annotation: AnnotationAnswer? = null
 
     //boolean to determine if image should be loaded or not
-    private val isLowBatteryMode by lazy { requireContext().isDisableImageLoad() && requireContext().isBatteryLevelLow() }
+    private val isLowBatteryMode by lazy { requireContext().isImageLoadingDisabled() && requireContext().isPowerSaveMode() }
     private var mUrlImage: String? = null
 
     private var nutritionScoreUri: Uri? = null

app/src/main/java/openfoodfacts/github/scrachx/openfood/features/productlist/ProductListAdapter.kt

@@ -6,23 +6,22 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.core.content.res.ResourcesCompat
 import androidx.recyclerview.widget.RecyclerView
-import com.squareup.picasso.Callback
 import com.squareup.picasso.Picasso
 import openfoodfacts.github.scrachx.openfood.R
 import openfoodfacts.github.scrachx.openfood.databinding.YourListedProductsItemBinding
-import openfoodfacts.github.scrachx.openfood.features.productlist.ProductListAdapter.ProductViewHolder
 import openfoodfacts.github.scrachx.openfood.models.entities.ListedProduct
-import openfoodfacts.github.scrachx.openfood.utils.isLowBatteryMode
+import openfoodfacts.github.scrachx.openfood.utils.into
+import openfoodfacts.github.scrachx.openfood.utils.shouldLoadImages
 
 class ProductListAdapter(
     private val context: Context,
-    private val picasso: Picasso
-) : RecyclerView.Adapter<ProductViewHolder>() {
+    private val picasso: Picasso,
+) : RecyclerView.Adapter<ProductListAdapter.ProductViewHolder>() {
 
     var products = mutableListOf<ListedProduct>()
     var onItemClickListener: (ListedProduct) -> Unit = { }
 
-    private val isLowBatteryMode by lazy { context.isLowBatteryMode() }
+    private val shouldLoadImages by lazy { context.shouldLoadImages() }
 
     override fun getItemCount() = products.size
 
@@ -42,29 +41,27 @@ class ProductListAdapter(
         binding.imageProgressbarYourListedProduct.visibility = View.VISIBLE
 
 
-        if (isLowBatteryMode || product.imageUrl.isNullOrEmpty()) {
-            binding.imgProductYourListedProduct.background = ResourcesCompat.getDrawable(
-                context.resources,
-                R.drawable.placeholder_thumb,
-                context.theme
-            )
-            binding.imageProgressbarYourListedProduct.visibility = View.INVISIBLE
-        } else {
+        if (shouldLoadImages && !product.imageUrl.isNullOrEmpty()) {
             picasso
                 .load(product.imageUrl)
                 .placeholder(R.drawable.placeholder_thumb)
                 .error(R.drawable.ic_no_red_24dp)
                 .fit()
                 .centerCrop()
-                .into(binding.imgProductYourListedProduct, object : Callback {
-                    override fun onSuccess() {
+                .into(binding.imgProductYourListedProduct,
+                    onSuccess = {
                         binding.imageProgressbarYourListedProduct.visibility = View.GONE
-                    }
-
-                    override fun onError(ex: Exception) {
+                    }, onError = {
                         binding.imageProgressbarYourListedProduct.visibility = View.GONE
                     }
-                })
+                )
+        } else {
+            binding.imgProductYourListedProduct.background = ResourcesCompat.getDrawable(
+                context.resources,
+                R.drawable.placeholder_thumb,
+                context.theme
+            )
+            binding.imageProgressbarYourListedProduct.visibility = View.INVISIBLE
         }
 
         // Set on click listener

app/src/main/java/openfoodfacts/github/scrachx/openfood/features/scanhistory/ScanHistoryActivity.kt

@@ -45,8 +45,8 @@ import openfoodfacts.github.scrachx.openfood.utils.SortType.TIME
 import openfoodfacts.github.scrachx.openfood.utils.SortType.TITLE
 import openfoodfacts.github.scrachx.openfood.utils.SwipeController
 import openfoodfacts.github.scrachx.openfood.utils.getCsvFolderName
-import openfoodfacts.github.scrachx.openfood.utils.isBatteryLevelLow
-import openfoodfacts.github.scrachx.openfood.utils.isDisableImageLoad
+import openfoodfacts.github.scrachx.openfood.utils.isPowerSaveMode
+import openfoodfacts.github.scrachx.openfood.utils.isImageLoadingDisabled
 import openfoodfacts.github.scrachx.openfood.utils.isHardwareCameraInstalled
 import openfoodfacts.github.scrachx.openfood.utils.writeHistoryToFile
 import java.io.File
@@ -75,7 +75,7 @@ class ScanHistoryActivity : BaseActivity() {
     private var menuButtonsEnabled = false
 
     private val adapter by lazy {
-        ScanHistoryAdapter(isLowBatteryMode = isDisableImageLoad() && isBatteryLevelLow(), picasso) {
+        ScanHistoryAdapter(isLowBatteryMode = isImageLoadingDisabled() && isPowerSaveMode(), picasso) {
             productViewActivityStarter.openProduct(it.barcode, this)
         }
     }

app/src/main/java/openfoodfacts/github/scrachx/openfood/features/search/ProductSearchActivity.kt

@@ -66,8 +66,8 @@ import openfoodfacts.github.scrachx.openfood.utils.SearchType.SEARCH
 import openfoodfacts.github.scrachx.openfood.utils.SearchType.STATE
 import openfoodfacts.github.scrachx.openfood.utils.SearchType.STORE
 import openfoodfacts.github.scrachx.openfood.utils.SearchType.TRACE
-import openfoodfacts.github.scrachx.openfood.utils.isBatteryLevelLow
-import openfoodfacts.github.scrachx.openfood.utils.isDisableImageLoad
+import openfoodfacts.github.scrachx.openfood.utils.isPowerSaveMode
+import openfoodfacts.github.scrachx.openfood.utils.isImageLoadingDisabled
 import openfoodfacts.github.scrachx.openfood.utils.isGranted
 import java.text.NumberFormat
 import java.util.*
@@ -103,7 +103,7 @@ class ProductSearchActivity : BaseActivity() {
     private lateinit var adapter: ProductSearchAdapter
 
     private var contributionType = 0
-    private val lowBatteryMode by lazy { isDisableImageLoad() && isBatteryLevelLow() }
+    private val lowBatteryMode by lazy { isImageLoadingDisabled() && isPowerSaveMode() }
 
     /**
      * boolean to determine if image should be loaded or not

app/src/main/java/openfoodfacts/github/scrachx/openfood/utils/Context.kt

@@ -1,45 +1,43 @@
 package openfoodfacts.github.scrachx.openfood.utils
 
 import android.content.Context
-import android.content.Intent
-import android.content.IntentFilter
 import android.content.pm.PackageManager
 import android.net.ConnectivityManager
 import android.net.NetworkCapabilities
-import android.os.BatteryManager
 import android.os.Build
+import android.os.PowerManager
 import android.util.Log
+import androidx.core.content.getSystemService
 import androidx.preference.PreferenceManager.getDefaultSharedPreferences
+import openfoodfacts.github.scrachx.openfood.R
 import java.io.File
 import java.io.IOException
-import kotlin.math.ceil
+
 
 private const val LOG_TAG = "ContextExt"
 
 /**
- * Function which returns true if the battery level is low
- *
- * @return true if battery is low or false if battery in not low
+ * @return true if the device supports the [PowerManager] API and is
+ * set to power save mode. False otherwise.
  */
-fun Context.isBatteryLevelLow(percent: Int = 15): Boolean {
-    val filter = IntentFilter(Intent.ACTION_BATTERY_CHANGED)
-    val batteryStatus = registerReceiver(null, filter) ?: throw IllegalStateException("cannot get battery level")
-
-    val level = batteryStatus.getIntExtra(BatteryManager.EXTRA_LEVEL, -1)
-    val scale = batteryStatus.getIntExtra(BatteryManager.EXTRA_SCALE, -1)
-
-    val batteryPct = level.toFloat() / scale * 100
-    Log.i("BATTERYSTATUS", batteryPct.toString())
-    return ceil(batteryPct) <= percent
+fun Context.isPowerSaveMode(): Boolean {
+    val powerManager = getSystemService<PowerManager>() ?: return false
+    return powerManager.isPowerSaveMode
 }
 
-fun Context.isLowBatteryMode() = isDisableImageLoad() && isBatteryLevelLow()
+fun Context.shouldLoadImages() = !isImageLoadingDisabled() && !isPowerSaveMode()
 
-fun Context.isDisableImageLoad(defValue: Boolean = false) = getDefaultSharedPreferences(this)
-    .getBoolean("disableImageLoad", defValue)
+fun Context.isImageLoadingDisabled(): Boolean {
+    val preferences = getDefaultSharedPreferences(this)
+    val key = getString(R.string.pref_low_battery_key)
+    return preferences.getBoolean(key, false)
+}
 
-fun Context.isFastAdditionMode(defValue: Boolean = false) = getDefaultSharedPreferences(this)
-    .getBoolean("fastAdditionMode", defValue)
+fun Context.isFastAdditionMode(defValue: Boolean = false): Boolean {
+    val preferences = getDefaultSharedPreferences(this)
+    val key = getString(R.string.pref_fast_addition_key)
+    return preferences.getBoolean(key, defValue)
+}
 
 fun Context.dpsToPixel(dps: Int) = dps.toPx(this)