Send analytics option

User can now decide whether or not the app will send analytics (enabled by default)

app/src/main/AndroidManifest.xml

@@ -11,8 +11,8 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.Unitto">
         <meta-data
-            android:name="firebase_analytics_collection_deactivated"
+            android:name="firebase_analytics_collection_enabled"
-            android:value="${analytics_deactivated}" />
+            android:value="false" />
         <meta-data
             android:name="firebase_crashlytics_collection_enabled"
             android:value="${crashlytics_enabled}" />

app/src/main/java/com/sadellie/unitto/data/preferences/UserPreferences.kt

@@ -1,10 +1,7 @@
 package com.sadellie.unitto.data.preferences
 
 import android.content.Context
-import androidx.datastore.preferences.core.Preferences
+import androidx.datastore.preferences.core.*
-import androidx.datastore.preferences.core.edit
-import androidx.datastore.preferences.core.intPreferencesKey
-import androidx.datastore.preferences.core.stringPreferencesKey
 import androidx.datastore.preferences.preferencesDataStore
 import dagger.hilt.android.qualifiers.ApplicationContext
 import kotlinx.coroutines.flow.Flow
@@ -26,6 +23,7 @@ object UserPreferenceKeys {
     val OUTPUT_FORMAT = intPreferencesKey("OUTPUT_FORMAT_PREF_KEY")
     val LATEST_LEFT_SIDE = stringPreferencesKey("LATEST_LEFT_SIDE_PREF_KEY")
     val LATEST_RIGHT_SIDE = stringPreferencesKey("LATEST_RIGHT_SIDE_PREF_KEY")
+    val ENABLE_ANALYTICS = booleanPreferencesKey("ENABLE_ANALYTICS_PREF_KEY")
 }
 
 /**
@@ -56,10 +54,21 @@ class UserPreferences @Inject constructor(@ApplicationContext private val contex
         }
     }
 
+    /**
+     * Gets boolean from datastore
+     *
+     * @param[default] Value to return if didn't find anything on fresh install
+     */
+    fun getItem(key: Preferences.Key<Boolean>, default: Boolean): Flow<Boolean> {
+        return context.settingsDataStore.data.map {
+            it[key] ?: default
+        }
+    }
+
     /**
      * Saves string value by key
      */
-    suspend fun saveString(key: Preferences.Key<String>, value: String) {
+    suspend fun saveItem(key: Preferences.Key<String>, value: String) {
         context.settingsDataStore.edit {
             it[key] = value
         }
@@ -68,7 +77,16 @@ class UserPreferences @Inject constructor(@ApplicationContext private val contex
     /**
      * Saves int value by key
      */
-    suspend fun saveInt(key: Preferences.Key<Int>, value: Int) {
+    suspend fun saveItem(key: Preferences.Key<Int>, value: Int) {
+        context.settingsDataStore.edit {
+            it[key] = value
+        }
+    }
+
+    /**
+     * Saves boolean value by key
+     */
+    suspend fun saveItem(key: Preferences.Key<Boolean>, value: Boolean) {
         context.settingsDataStore.edit {
             it[key] = value
         }

app/src/main/java/com/sadellie/unitto/screens/MainViewModel.kt

@@ -7,6 +7,7 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
+import com.google.firebase.analytics.FirebaseAnalytics
 import com.google.firebase.crashlytics.FirebaseCrashlytics
 import com.sadellie.unitto.data.KEY_0
 import com.sadellie.unitto.data.KEY_DOT
@@ -45,7 +46,7 @@ class MainViewModel @Inject constructor(
 
     fun saveCurrentAppTheme(value: Int) {
         viewModelScope.launch {
-            mySettingsPrefs.saveInt(key = UserPreferenceKeys.CURRENT_APP_THEME, value)
+            mySettingsPrefs.saveItem(key = UserPreferenceKeys.CURRENT_APP_THEME, value)
         }
     }
 
@@ -58,7 +59,7 @@ class MainViewModel @Inject constructor(
     fun setPrecisionPref(value: Int) {
         viewModelScope.launch {
             precision = value
-            mySettingsPrefs.saveInt(UserPreferenceKeys.DIGITS_PRECISION, value)
+            mySettingsPrefs.saveItem(UserPreferenceKeys.DIGITS_PRECISION, value)
             convertValue()
         }
     }
@@ -73,7 +74,7 @@ class MainViewModel @Inject constructor(
         separator = value
         viewModelScope.launch {
             Formatter.setSeparator(value)
-            mySettingsPrefs.saveInt(UserPreferenceKeys.SEPARATOR, value)
+            mySettingsPrefs.saveItem(UserPreferenceKeys.SEPARATOR, value)
             convertValue()
         }
     }
@@ -93,11 +94,24 @@ class MainViewModel @Inject constructor(
         outputFormat = value
         // Updating value on disk
         viewModelScope.launch {
-            mySettingsPrefs.saveInt(UserPreferenceKeys.OUTPUT_FORMAT, value)
+            mySettingsPrefs.saveItem(UserPreferenceKeys.OUTPUT_FORMAT, value)
             convertValue()
         }
     }
 
+    /**
+     * ANALYTICS
+     */
+    var enableAnalytics: Boolean by mutableStateOf(false)
+
+    fun setAnalyticsPref(value: Boolean) {
+        enableAnalytics = value
+        viewModelScope.launch {
+            mySettingsPrefs.saveItem(UserPreferenceKeys.ENABLE_ANALYTICS, value)
+            FirebaseAnalytics.getInstance(application).setAnalyticsCollectionEnabled(enableAnalytics)
+        }
+    }
+
     /**
      * Unit we converting from (left side)
      */
@@ -400,8 +414,8 @@ class MainViewModel @Inject constructor(
      */
     fun saveMe() {
         viewModelScope.launch {
-            mySettingsPrefs.saveString(UserPreferenceKeys.LATEST_LEFT_SIDE, unitFrom.unitId)
+            mySettingsPrefs.saveItem(UserPreferenceKeys.LATEST_LEFT_SIDE, unitFrom.unitId)
-            mySettingsPrefs.saveString(UserPreferenceKeys.LATEST_RIGHT_SIDE, unitTo.unitId)
+            mySettingsPrefs.saveItem(UserPreferenceKeys.LATEST_RIGHT_SIDE, unitTo.unitId)
         }
     }
 
@@ -532,6 +546,9 @@ class MainViewModel @Inject constructor(
             * He can choose another unit group and doesn't need to wait for network to appear.
             * */
             updateCurrenciesBasicUnits()
+
+            enableAnalytics = mySettingsPrefs.getItem(UserPreferenceKeys.ENABLE_ANALYTICS, true).first()
+            FirebaseAnalytics.getInstance(application).setAnalyticsCollectionEnabled(enableAnalytics)
         }
     }
 }

app/src/main/java/com/sadellie/unitto/screens/setttings/SettingsListItem.kt

@@ -2,12 +2,10 @@ package com.sadellie.unitto.screens.setttings
 
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.interaction.MutableInteractionSource
-import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.*
-import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.padding
 import androidx.compose.material.ripple.rememberRipple
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
@@ -17,22 +15,24 @@ import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 
 /**
- * Represents one item in list on Settings screen
+ * Basic list item for settings screen. By default only has label and support text, clickable.
+ * This component can be easily modified if you provide additional component to it,
+ * for example a switch or a checkbox
  *
- * @param modifier Modifier that is applied to a [Row]
+ * @param label Main text
- * @param onClick Action to perform when clicking this item
+ * @param supportText Text that is located below label
- * @param label Big text that is above support text
+ * @param onClick Action to perform when user clicks on this component (whole component is clickable)
- * @param supportText Smaller text that is below label
+ * @param content Additional composable: buttons, switches, checkboxes or something else
  */
 @Composable
-fun SettingsListItem(
+private fun BasicSettingsListItem(
-    modifier: Modifier = Modifier,
-    onClick: () -> Unit,
     label: String,
     supportText: String? = null,
+    onClick: () -> Unit = {},
+    content: @Composable RowScope.() -> Unit = {}
 ) {
     Row(
-        modifier = modifier
+        modifier = Modifier
             .fillMaxWidth()
             .clickable(
                 interactionSource = remember { MutableInteractionSource() },
@@ -43,7 +43,9 @@ fun SettingsListItem(
         verticalAlignment = Alignment.CenterVertically,
     ) {
         Column(
-            Modifier.padding(horizontal = 0.dp)
+            Modifier
+                .padding(horizontal = 0.dp)
+                .weight(1f)  // This makes additional composable to be seen
         ) {
             Text(
                 modifier = Modifier
@@ -62,5 +64,38 @@ fun SettingsListItem(
                 )
             }
         }
+        content()
     }
 }
+
+/**
+ * Represents one item in list on Settings screen
+ *
+ * @param label Main text
+ * @param supportText Text that is located below label
+ * @param onClick Action to perform when user clicks on this component (whole component is clickable)
+ */
+@Composable
+fun SettingsListItem(
+    label: String,
+    supportText: String? = null,
+    onClick: () -> Unit,
+) = BasicSettingsListItem(label, supportText, onClick)
+
+/**
+ * Represents one item in list on Settings screen
+ *
+ * @param label Main text
+ * @param supportText Text that is located below label
+ * @param switchState Current switch state
+ * @param onSwitchChange Action to perform when user clicks on this component or just switch
+ */
+@Composable
+fun SettingsListItem(
+    label: String,
+    supportText: String? = null,
+    switchState: Boolean,
+    onSwitchChange: (Boolean) -> Unit
+) = BasicSettingsListItem(label, supportText, { onSwitchChange(switchState) }) {
+    Switch(checked = switchState, onCheckedChange = { onSwitchChange(!it) })
+}

app/src/main/java/com/sadellie/unitto/screens/setttings/SettingsScreen.kt

@@ -130,6 +130,11 @@ fun SettingsScreen(
                                 )
                             }
                         )
+                        SettingsListItem(
+                            label = stringResource(id = R.string.send_usage_statistics),
+                            supportText = stringResource(id = R.string.send_usage_statistics_support),
+                            switchState = mainViewModel.enableAnalytics,
+                            onSwitchChange = { mainViewModel.setAnalyticsPref(!it) })
                         SettingsListItem(
                             label = stringResource(R.string.third_party_licenses),
                             onClick = { navControllerAction(ABOUT_SCREEN) }

app/src/main/res/values-en-rUS/strings.xml

@@ -718,5 +718,7 @@
     <string name="clear_input_description">Clear input</string>
     <string name="favorite_button_description">Add or remove unit from favorites</string>
     <string name="empty_search_result_description">Empty search result</string>
+    <string name="send_usage_statistics">Send usage statistics</string>
+    <string name="send_usage_statistics_support">All data is anonymous and encrypted</string>
 
 </resources>

app/src/main/res/values-ru/strings.xml

@@ -670,5 +670,7 @@
     <string name="sun_mass_short">Солнце M</string>
     <string name="pressure">Давление</string>
     <string name="acceleration">Ускорение</string>
+    <string name="send_usage_statistics">Отправлять статистику использования</string>
+    <string name="send_usage_statistics_support">Все данные анонимны и зашифрованы</string>
 
 </resources>

app/src/main/res/values/strings.xml

@@ -930,6 +930,8 @@
     <string name="privacy_policy">Privacy Policy</string>
     <string name="third_party_licenses">Third party licenses</string>
     <string name="rate_this_app">Rate this app</string>
+    <string name="send_usage_statistics">Send usage statistics</string>
+    <string name="send_usage_statistics_support">All data is anonymous and encrypted</string>
     <string name="general_settings_group">General</string>
     <string name="additional_settings_group">Additional</string>