Task/rfr 769 migrate to datastore

build.gradle

@@ -20,13 +20,13 @@
  * Top-level build file where you can add configuration options common to all sub-projects/modules.
  *
  * @author Armin Schnabel
- * @version 3.2.2
+ * @version 3.3.0
  * @since 1.0.0
  */
 
 buildscript {
     ext.gradle_version = "7.4.2"
-    ext.kotlin_version = "1.8.20"
+    ext.kotlin_version = "1.9.0"
 
     repositories {
         google()
@@ -39,33 +39,40 @@ buildscript {
     }
 }
 
+plugins {
+    // To generate Proto DataStore
+    id 'com.google.protobuf' version '0.8.19' apply false // Maybe keep in sync with other usages
+}
+
 ext {
     // This libraries version
     cyfaceEnergySettingsVersion = "0.0.0" // Automatically overwritten by CI
 
     // Cyface dependencies
-    cyfaceUtilsVersion = "3.5.1"
+    cyfaceUtilsVersion = "4.0.0"
 
     // Android SDK versions
     minSdkVersion = 21 // device support
     targetSdkVersion = 33 // behavioral changes, follow migration guide & test the app against this
-    compileSdkVersion = 33 // allows newest APIs to be used and to see deprecations, use latest
+    compileSdkVersion = 34 // allows newest APIs to be used and to see deprecations, use latest
     buildToolsVersion = '34.0.0' // optional, if defined, use latest (SDK Manager > SDK Tools)
 
     // Android dependencies
     androidxAnnotationVersion = "1.6.0"
     androidxAppCompatVersion = "1.6.1"
     androidPreferencesVersion = '1.2.1'
+    datastoreVersion = "1.1.0-alpha05" // only 1.1.0 supports multi-process datastore
 
     // Other dependencies
     materialDialogsVersion = '3.3.0'
+    protobufVersion = '3.22.2' // For Proto Datastore. Maybe keep in sync with other versions.
 
     // Testing
     junitVersion = "1.1.5"
     mockitoVersion = '5.2.0'
     hamcrestVersion = "1.3"
     rulesVersion = "1.5.0"
-    robolectricVersion = "4.8.2"
+    robolectricVersion = "4.10.2"
     androidxTestCoreVersion = "1.4.0"
     testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
 
@@ -92,8 +99,3 @@ allprojects {
 }
 
 apply plugin: 'android-reporting'
-
-// Auto-generated by Android Studio
-task clean(type: Delete) {
-    delete rootProject.buildDir
-}

energy_settings/build.gradle

@@ -20,12 +20,13 @@
  * Gradle's build file for this module.
  *
  * @author Armin Schnabel
- * @version 1.3.0
+ * @version 1.4.0
  * @since 1.0.0
  */
 
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
+apply plugin: 'com.google.protobuf' // For Proto DataStore
 
 android {
     namespace "de.cyface.energy_settings"
@@ -70,6 +71,10 @@ android {
 }
 
 dependencies {
+    // Proto DataStore with SingleProcess support to store settings
+    implementation "androidx.datastore:datastore:${datastoreVersion}"
+    implementation  "com.google.protobuf:protobuf-javalite:${protobufVersion}"
+
     // Other Android libraries
     implementation "androidx.appcompat:appcompat:$rootProject.ext.androidxAppCompatVersion"
     implementation "androidx.preference:preference-ktx:$rootProject.ext.androidPreferencesVersion"
@@ -94,5 +99,25 @@ dependencies {
     testImplementation "org.robolectric:robolectric:$rootProject.ext.robolectricVersion"
 }
 
+// Required for Proto DataStore
+protobuf {
+    protoc {
+        artifact = "com.google.protobuf:protoc:$protobufVersion"
+    }
+
+    // Generates the java Protobuf-lite code for the Protobuf files in this project. See
+    // https://github.com/google/protobuf-gradle-plugin#customizing-protobuf-compilation
+    // for more information.
+    generateProtoTasks {
+        all().each { task ->
+            task.builtins {
+                java {
+                    option 'lite'
+                }
+            }
+        }
+    }
+}
+
 // The gradle publish tasks is defined in a separate file:
 apply from: 'publish.gradle'

energy_settings/src/main/kotlin/de/cyface/energy_settings/Constants.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 Cyface GmbH
+ * Copyright 2019-2023 Cyface GmbH
  *
  * This file is part of the Cyface Energy Settings for Android.
  *
@@ -22,13 +22,12 @@ package de.cyface.energy_settings
  * Holds constants required by multiple classes.
  *
  * @author Armin Schnabel
- * @version 1.0.1
+ * @version 1.1.0
  * @since 1.0.0
  */
 @Suppress("SpellCheckingInspection")
 object Constants {
     const val TAG = "de.cyface.es"
-    private const val PACKAGE = "de.cyface.energy_settings"
 
     // Dialog codes to identify the different dialogs
     const val DIALOG_ENERGY_SAFER_WARNING_CODE = 2019071101
@@ -37,9 +36,6 @@ object Constants {
     const val DIALOG_GPS_DISABLED_WARNING_CODE = 2019071104
     const val DIALOG_NO_GUIDANCE_NEEDED_DIALOG_CODE = 2019071105
 
-    // Preference key for shared preferences
-    const val PREFERENCES_MANUFACTURER_WARNING_SHOWN_KEY = "$PACKAGE.manufacturer_warning_shown"
-
     // Manufacturer names
     const val MANUFACTURER_HUAWEI = "huawei"
     const val MANUFACTURER_HONOR = "honor" // sub brand of huawei

energy_settings/src/main/kotlin/de/cyface/energy_settings/ProblematicManufacturerWarningDialog.kt

@@ -28,10 +28,13 @@ import android.content.pm.PackageManager
 import android.os.Build
 import android.os.Bundle
 import android.util.Log
+import androidx.lifecycle.LifecycleCoroutineScope
 import com.afollestad.materialdialogs.MaterialDialog
 import de.cyface.energy_settings.Constants.TAG
 import de.cyface.energy_settings.GnssDisabledWarningDialog.Companion.create
 import de.cyface.energy_settings.ProblematicManufacturerWarningDialog.Companion.create
+import de.cyface.energy_settings.settings.EnergySettings
+import kotlinx.coroutines.launch
 import java.util.Locale
 
 /**
@@ -51,12 +54,18 @@ import java.util.Locale
  * 2. As [MaterialDialog]. Use the static [create] method which returns the dialog.
  *
  * @author Armin Schnabel
- * @version 2.1.0
+ * @version 3.0.0
  * @since 1.0.0
  *
- * @param recipientEmail The e-mail address to which the feedback email should be addressed to in the generated template.
+ * @property recipientEmail The e-mail address to which the feedback email should be addressed to in the generated template.
+ * @property scope The scope to execute async code in.
+ * @property settings The settings which contain the user preferences.
  */
-internal class ProblematicManufacturerWarningDialog(private val recipientEmail: String) :
+internal class ProblematicManufacturerWarningDialog(
+    private val recipientEmail: String,
+    private val scope: LifecycleCoroutineScope,
+    private val settings: EnergySettings
+) :
     EnergySettingDialog() {
 
     override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
@@ -67,7 +76,9 @@ internal class ProblematicManufacturerWarningDialog(private val recipientEmail:
 
         // Allow the user to express its preference to disable auto-popup of this dialog
         builder.setNegativeButton(negativeButtonRes) { _, _ ->
-            onNegativeButtonCall(context)
+            scope.launch {
+                onNegativeButtonCall(settings)
+            }
         }
 
         // Show Sony STAMINA specific dialog (no manufacturer specific intent name known yet)
@@ -165,25 +176,37 @@ internal class ProblematicManufacturerWarningDialog(private val recipientEmail:
 
         /**
          * Saves the user's preference to disable auto-popup of this dialog
+         *
+         * @param settings The settings which contain the user preferences.
          */
-        private fun onNegativeButtonCall(context: Context?) {
-            CustomPreferences(context!!).saveWarningShown(true)
+        private suspend fun onNegativeButtonCall(settings: EnergySettings) {
+            settings.setManufacturerWarningShown(true)
         }
 
         /**
          * Alternative, `FragmentManager`-less implementation.
          *
          * @param activity Required to show the dialog
+         * @param recipientEmail The e-mail address to which the feedback email should be addressed to in the generated template.
+         * @param settings The settings which contain the user preferences.
+         * @param scope The scope to execute async code in.
          */
-        fun create(activity: Activity, recipientEmail: String): MaterialDialog {
+        fun create(
+            activity: Activity,
+            recipientEmail: String,
+            settings: EnergySettings,
+            scope: LifecycleCoroutineScope
+        ): MaterialDialog {
 
             // Generate dialog
             val dialog = MaterialDialog(activity, DIALOG_BEHAVIOUR)
             dialog.title(titleRes, null)
 
             // Allow the user to express its preference to disable auto-popup of this dialog
             dialog.negativeButton(negativeButtonRes) {
-                onNegativeButtonCall(activity.applicationContext)
+                scope.launch {
+                    onNegativeButtonCall(settings)
+                }
             }
 
             // Show Sony STAMINA specific dialog (no manufacturer specific intent name known yet)

energy_settings/src/main/kotlin/de/cyface/energy_settings/TrackingSettings.kt

@@ -30,20 +30,38 @@ import android.util.Log
 import androidx.annotation.RequiresApi
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
+import androidx.lifecycle.LifecycleCoroutineScope
+import androidx.lifecycle.lifecycleScope
+import de.cyface.energy_settings.TrackingSettings.initialize
+import de.cyface.energy_settings.settings.EnergySettings
 import de.cyface.utils.Validate
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.runBlocking
 import java.util.Locale
 
 /**
  * Holds the API for this energy setting library.
  *
  * Offers checks and dialogs for energy settings required for background tracking.
  *
+ * Attention: You need to call [initialize] before you use this object, e.g. in Activity.onCreate.
+ *
  * @author Armin Schnabel
- * @version 2.0.3
+ * @version 2.1.0
  * @since 1.0.0
  */
 object TrackingSettings {
 
+    /**
+     * Custom settings used by this library.
+     */
+    private lateinit var settings: EnergySettings
+
+    @JvmStatic
+    fun initialize(context: Context) {
+        settings = EnergySettings(context)
+    }
+
     /**
      * Checks whether the energy safer mode is active *at this moment*.
      *
@@ -311,12 +329,19 @@ object TrackingSettings {
         force: Boolean,
         recipientEmail: String
     ): Boolean {
-
-        val preferences = CustomPreferences(context)
-        if (isProblematicManufacturer && (force || !preferences.getWarningShown())) {
+        // TODO: consider async-preloading data at least, see:
+        // https://developer.android.com/topic/libraries/architecture/datastore#synchronous
+        val warningShown = runBlocking {
+            settings.manufacturerWarningShownFlow.first()
+        }
+        if (isProblematicManufacturer && (force || !warningShown)) {
             val fragmentManager = fragment.fragmentManager
             Validate.notNull(fragmentManager)
-            val dialog = ProblematicManufacturerWarningDialog(recipientEmail)
+            val dialog = ProblematicManufacturerWarningDialog(
+                recipientEmail,
+                fragment.lifecycleScope,
+                settings
+            )
             dialog.setTargetFragment(
                 fragment,
                 Constants.DIALOG_PROBLEMATIC_MANUFACTURER_WARNING_CODE
@@ -336,24 +361,30 @@ object TrackingSettings {
      * @param recipientEmail The e-mail address to which the feedback email should be addressed to in the generated
      * template.
      * @param force `True` if the dialog should be shown no matter of the preferences state
+     * @param scope The scope to execute async code in.
      * @return `True` if the dialog is shown
      */
     @JvmStatic
     @Suppress("MemberVisibilityCanBePrivate") // Used by implementing app
     fun showProblematicManufacturerDialog(
         activity: Activity?,
         force: Boolean,
-        recipientEmail: String
+        recipientEmail: String,
+        scope: LifecycleCoroutineScope
     ): Boolean {
 
         if (activity == null || activity.isFinishing) {
             Log.w(Constants.TAG, "showProblematicManufacturerDialog: aborted, activity is null")
             return false
         }
 
-        val preferences = CustomPreferences(activity.applicationContext)
-        if (isProblematicManufacturer && (force || !preferences.getWarningShown())) {
-            ProblematicManufacturerWarningDialog.create(activity, recipientEmail).show()
+        val warningShown = runBlocking {
+            settings.manufacturerWarningShownFlow.first()
+        }
+
+        if (isProblematicManufacturer && (force || !warningShown)) {
+            ProblematicManufacturerWarningDialog.create(activity, recipientEmail, settings, scope)
+                .show()
             return true
         }
         return false