Updated on 2026-08-14

core/datasource/src/main/java/com/tangem/datasource/asset/AndroidAssetReader.kt

@@ -0,0 +1,23 @@
+package com.tangem.datasource.asset
+
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
+import java.io.BufferedReader
+import javax.inject.Inject
+
+/**
+ * Implementation of asset file reader
+ *
+ * @property context application context
+ */
+internal class AndroidAssetReader @Inject constructor(
+    @ApplicationContext private val context: Context,
+) : AssetReader {
+
+    override fun readJson(fileName: String): String {
+        return context.assets
+            .open("$fileName.json")
+            .bufferedReader()
+            .use(BufferedReader::readText)
+    }
+}

core/datasource/src/main/java/com/tangem/datasource/asset/AssetReader.kt

@@ -0,0 +1,12 @@
+package com.tangem.datasource.asset
+
+/**
+ * Asset file reader
+ *
+[REDACTED_AUTHOR]
+ */
+interface AssetReader {
+
+    /** Read content of json file [fileName] from asset */
+    fun readJson(fileName: String): String
+}

core/datasource/src/main/java/com/tangem/datasource/config/FeaturesLocalLoader.kt

@@ -2,10 +2,10 @@ package com.tangem.datasource.config
 
 import com.squareup.moshi.JsonAdapter
 import com.squareup.moshi.Moshi
+import com.tangem.datasource.asset.AssetReader
 import com.tangem.datasource.config.models.ConfigModel
 import com.tangem.datasource.config.models.ConfigValueModel
 import com.tangem.datasource.config.models.FeatureModel
-import com.tangem.datasource.utils.AssetReader
 import timber.log.Timber
 
 /**
@@ -25,8 +25,8 @@ class FeaturesLocalLoader(
             val featureAdapter: JsonAdapter<FeatureModel> = moshi.adapter(FeatureModel::class.java)
             val valuesAdapter: JsonAdapter<ConfigValueModel> = moshi.adapter(ConfigValueModel::class.java)
 
-            val jsonFeatures = assetReader.readAssetAsString(featuresName)
-            val jsonConfigValues = assetReader.readAssetAsString(configValuesName)
+            val jsonFeatures = assetReader.readJson(featuresName)
+            val jsonConfigValues = assetReader.readJson(configValuesName)
 
             ConfigModel(featureAdapter.fromJson(jsonFeatures), valuesAdapter.fromJson(jsonConfigValues))
         } catch (ex: Exception) {

core/datasource/src/main/java/com/tangem/datasource/di/AppPreferenceStorageModule.kt

@@ -0,0 +1,18 @@
+package com.tangem.datasource.di
+
+import com.tangem.datasource.local.AppPreferenceStorage
+import com.tangem.datasource.local.AppPreferenceStorageImpl
+import dagger.Binds
+import dagger.Module
+import dagger.hilt.InstallIn
+import dagger.hilt.components.SingletonComponent
+import javax.inject.Singleton
+
+@Module
+@InstallIn(SingletonComponent::class)
+internal interface AppPreferenceStorageModule {
+
+    @Binds
+    @Singleton
+    fun bindAppPreferenceStorage(appPreferenceStorageImpl: AppPreferenceStorageImpl): AppPreferenceStorage
+}

core/datasource/src/main/java/com/tangem/datasource/di/AssetModule.kt

@@ -0,0 +1,18 @@
+package com.tangem.datasource.di
+
+import com.tangem.datasource.asset.AndroidAssetReader
+import com.tangem.datasource.asset.AssetReader
+import dagger.Binds
+import dagger.Module
+import dagger.hilt.InstallIn
+import dagger.hilt.components.SingletonComponent
+import javax.inject.Singleton
+
+@Module
+@InstallIn(SingletonComponent::class)
+internal interface AssetModule {
+
+    @Binds
+    @Singleton
+    fun bindAsserReader(androidAssetReader: AndroidAssetReader): AssetReader
+}

core/datasource/src/main/java/com/tangem/datasource/local/AppPreferenceStorage.kt

@@ -0,0 +1,12 @@
+package com.tangem.datasource.local
+
+/**
+ * Application local storage
+ *
+[REDACTED_AUTHOR]
+ */
+interface AppPreferenceStorage {
+
+    /** Json config with feature toggles 'ToggleName: String - Availability: Boolean' */
+    var featureToggles: String
+}

core/datasource/src/main/java/com/tangem/datasource/local/AppPreferenceStorageImpl.kt

@@ -0,0 +1,24 @@
+package com.tangem.datasource.local
+
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
+import hu.autsoft.krate.SimpleKrate
+import hu.autsoft.krate.default.withDefault
+import hu.autsoft.krate.stringPref
+import javax.inject.Inject
+import javax.inject.Singleton
+
+/**
+ * Implementation of application local storage
+ *
+ * @param context application context
+ *
+[REDACTED_AUTHOR]
+ */
+@Singleton
+internal class AppPreferenceStorageImpl @Inject constructor(
+    @ApplicationContext context: Context,
+) : SimpleKrate(context = context), AppPreferenceStorage {
+
+    override var featureToggles: String by stringPref().withDefault("")
+}

core/datasource/src/main/java/com/tangem/datasource/utils/AssetReader.kt

@@ -1,23 +0,0 @@
-package com.tangem.datasource.utils
-
-import android.content.Context
-
-/**
-[REDACTED_AUTHOR]
- */
-interface AssetReader {
-    fun readAssetAsString(name: String): String
-}
-
-class AndroidAssetReader(
-    private val context: Context,
-) : AssetReader {
-
-    override fun readAssetAsString(name: String): String {
-        return context.readAssetAsString(name)
-    }
-}
-
-fun Context.readAssetAsString(fileName: String): String {
-    return this.assets.open("$fileName.json").bufferedReader().readText()
-}