update pref data store

Author: quanda-0562

app/src/main/java/com/example/moviedb/data/local/pref/AppPrefs.kt

@@ -1,34 +1,35 @@
 package com.example.moviedb.data.local.pref
 
-import android.content.SharedPreferences
-import androidx.core.content.edit
+import androidx.datastore.core.DataStore
+import androidx.datastore.preferences.core.*
 import com.squareup.moshi.Moshi
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
 import javax.inject.Inject
 
 class AppPrefs @Inject constructor(
-    private val sharedPreferences: SharedPreferences,
-    val moshi: Moshi
+    private val dataStore: DataStore<Preferences>,
+    private val moshi: Moshi
 ) : PrefHelper {
 
-    companion object {
-        private const val FIRST_RUN = "FIRST_RUN"
+    private object Key {
+        val FIRST_RUN = booleanPreferencesKey("first_run")
     }
 
-    override fun isFirstRun(): Boolean {
-        val isFirstRun = sharedPreferences.getBoolean(FIRST_RUN, true)
-        if (isFirstRun) {
-            sharedPreferences.edit { putBoolean(FIRST_RUN, false) }
+    override suspend fun isFirstRun(): Flow<Boolean> =
+        dataStore.data.map { pref ->
+            val firstRun = pref[Key.FIRST_RUN] ?: true
+            if (firstRun) {
+                dataStore.edit { pref ->
+                    pref[Key.FIRST_RUN] = false
+                }
+            }
+            firstRun
         }
-        return isFirstRun
-    }
 
-    override fun remove(key: String) {
-        sharedPreferences.edit {
-            remove(key)
+    override suspend fun clear() {
+        dataStore.edit { pref ->
+            pref.clear()
         }
     }
-
-    override fun clear() {
-        sharedPreferences.edit { clear() }
-    }
 }

app/src/main/java/com/example/moviedb/data/local/pref/PrefHelper.kt

@@ -1,11 +1,11 @@
 package com.example.moviedb.data.local.pref
 
-interface PrefHelper {
+import kotlinx.coroutines.flow.Flow
 
-    fun isFirstRun(): Boolean
+interface PrefHelper {
 
-    fun remove(key: String)
+    suspend fun isFirstRun(): Flow<Boolean>
 
-    fun clear()
+    suspend fun clear()
 
 }

app/src/main/java/com/example/moviedb/di/AppModule.kt

@@ -4,14 +4,16 @@ import android.content.Context
 import android.content.SharedPreferences
 import android.content.res.AssetManager
 import android.content.res.Resources
+import androidx.datastore.core.DataStore
+import androidx.datastore.preferences.core.PreferenceDataStoreFactory
+import androidx.datastore.preferences.core.Preferences
+import androidx.datastore.preferences.preferencesDataStoreFile
 import androidx.room.Room
 import com.example.moviedb.data.constants.Constants
 import com.example.moviedb.data.local.dao.MovieDao
 import com.example.moviedb.data.local.db.AppDatabase
 import com.example.moviedb.data.local.pref.AppPrefs
 import com.example.moviedb.data.local.pref.PrefHelper
-import com.example.moviedb.data.repository.UserRepository
-import com.example.moviedb.data.repository.impl.UserRepositoryImpl
 import com.squareup.moshi.Moshi
 import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
 import dagger.Module
@@ -41,6 +43,14 @@ class AppModule {
     fun provideSharedPrefs(context: Context): SharedPreferences =
         context.getSharedPreferences(context.packageName, Context.MODE_PRIVATE)
 
+    @Singleton
+    @Provides
+    fun providePreferencesDataStore(@ApplicationContext context: Context): DataStore<Preferences> {
+        return PreferenceDataStoreFactory.create(
+            produceFile = { context.preferencesDataStoreFile(context.packageName) }
+        )
+    }
+
     @Singleton
     @Provides
     fun provideAppDatabase(context: Context): AppDatabase =