[refactor] Preference 만드는 로직 분리

Nexters · Jan 28, 2024 · ac725bc · ac725bc
1 parent b99011f
commit ac725bc
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Showing 2 changed files with 65 additions and 49 deletions.
diff --git a/core/datastore/src/main/java/com/moya/funch/datastore/PreferenceFactory.kt b/core/datastore/src/main/java/com/moya/funch/datastore/PreferenceFactory.kt
@@ -0,0 +1,62 @@
+package com.moya.funch.datastore
+
+import android.content.Context
+import android.content.SharedPreferences
+import androidx.security.crypto.EncryptedSharedPreferences
+import androidx.security.crypto.MasterKey
+import com.moja.funch.datastore.BuildConfig
+import dagger.hilt.android.qualifiers.ApplicationContext
+import java.security.GeneralSecurityException
+import java.security.KeyStore
+import javax.inject.Inject
+
+class PreferenceFactory @Inject constructor(
+    @ApplicationContext private val context: Context,
+) {
+    fun create(): SharedPreferences {
+        return if (BuildConfig.DEBUG) {
+            context.getSharedPreferences(DEBUG_DATASTORE_KEY, Context.MODE_PRIVATE)
+        } else {
+            try {
+                createEncryptedSharedPreferences(DATASTORE_KEY, context)
+            } catch (e: GeneralSecurityException) {
+                deleteMasterKeyEntry()
+                deletePreference(DATASTORE_KEY, context)
+                createEncryptedSharedPreferences(DATASTORE_KEY, context)
+            }
+        }
+    }
+
+    private fun createEncryptedSharedPreferences(
+        fileName: String,
+        context: Context,
+    ): SharedPreferences {
+        return EncryptedSharedPreferences.create(
+            context,
+            fileName,
+            MasterKey.Builder(context, MasterKey.DEFAULT_MASTER_KEY_ALIAS)
+                .setKeyScheme(MasterKey.KeyScheme.AES256_GCM)
+                .build(),
+            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
+            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
+
+        )
+    }
+
+    private fun deletePreference(fileName: String, context: Context) {
+        context.deleteSharedPreferences(fileName)
+    }
+
+    private fun deleteMasterKeyEntry() {
+        KeyStore.getInstance(ANDROID_KEY_STORE).apply {
+            load(null)
+            deleteEntry(MasterKey.DEFAULT_MASTER_KEY_ALIAS)
+        }
+    }
+
+    companion object {
+        private const val DEBUG_DATASTORE_KEY = "DEBUG_DATASTORE_KEY"
+        private const val DATASTORE_KEY = "DATASTORE_KEY"
+        private const val ANDROID_KEY_STORE = "AndroidKeyStore"
+    }
+}
diff --git a/core/datastore/src/main/java/com/moya/funch/datastore/di/DataStoreModule.kt b/core/datastore/src/main/java/com/moya/funch/datastore/di/DataStoreModule.kt
@@ -1,71 +1,25 @@
 package com.moya.funch.datastore.di
 
-import android.content.Context
 import android.content.SharedPreferences
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKey
-import com.moja.funch.datastore.BuildConfig
 import com.moya.funch.datastore.DefaultUserCodeDataStore
+import com.moya.funch.datastore.PreferenceFactory
 import com.moya.funch.datastore.UserCodeDataStore
 import dagger.Binds
 import dagger.Module
 import dagger.Provides
 import dagger.hilt.InstallIn
-import dagger.hilt.android.qualifiers.ApplicationContext
 import dagger.hilt.components.SingletonComponent
-import java.security.GeneralSecurityException
-import java.security.KeyStore
 import javax.inject.Singleton
 
 @Module
 @InstallIn(SingletonComponent::class)
 object DataStoreModule {
-    private const val DEBUG_DATASTORE_KEY = "DEBUG_DATASTORE_KEY"
-    private const val DATASTORE_KEY = "DATASTORE_KEY"
-    private const val ANDROID_KEY_STORE = "AndroidKeyStore"
 
     @Provides
     @Singleton
     fun provideAppPreferences(
-        @ApplicationContext context: Context,
-    ): SharedPreferences = if (BuildConfig.DEBUG) {
-        context.getSharedPreferences(DEBUG_DATASTORE_KEY, Context.MODE_PRIVATE)
-    } else {
-        try {
-            createEncryptedSharedPreferences(DATASTORE_KEY, context)
-        } catch (e: GeneralSecurityException) {
-            deleteMasterKeyEntry()
-            deletePreference(DATASTORE_KEY, context)
-            createEncryptedSharedPreferences(DATASTORE_KEY, context)
-        }
-    }
-
-    private fun deletePreference(fileName: String, context: Context) {
-        context.deleteSharedPreferences(fileName)
-    }
-
-    private fun deleteMasterKeyEntry() {
-        KeyStore.getInstance(ANDROID_KEY_STORE).apply {
-            load(null)
-            deleteEntry(MasterKey.DEFAULT_MASTER_KEY_ALIAS)
-        }
-    }
-
-    private fun createEncryptedSharedPreferences(
-        fileName: String,
-        context: Context,
-    ): SharedPreferences {
-        return EncryptedSharedPreferences.create(
-            context,
-            fileName,
-            MasterKey.Builder(context, MasterKey.DEFAULT_MASTER_KEY_ALIAS)
-                .setKeyScheme(MasterKey.KeyScheme.AES256_GCM)
-                .build(),
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-
-        )
-    }
+        factory: PreferenceFactory,
+    ): SharedPreferences = factory.create()
 
     @Module
     @InstallIn(SingletonComponent::class)