Add support for merging application data to prevent crashes

app/src/main/java/dev/medzik/librepass/android/MainActivity.kt

@@ -30,6 +30,9 @@ class MainActivity : FragmentActivity() {
             finish()
         }
 
+        // merge application data when application updated
+        UpdateMerge.update(this)
+
         // init datastore
         userSecrets = SecretStore.initialize(this)
 

app/src/main/java/dev/medzik/librepass/android/UpdateMerge.kt

@@ -0,0 +1,45 @@
+package dev.medzik.librepass.android
+
+import android.content.Context
+import dev.medzik.librepass.android.data.getRepository
+import dev.medzik.librepass.android.utils.SecretStore
+import dev.medzik.librepass.android.utils.SecretStore.readKey
+import dev.medzik.librepass.android.utils.SecretStore.writeKey
+import dev.medzik.librepass.android.utils.StoreKey
+import kotlinx.coroutines.runBlocking
+
+object UpdateMerge {
+    fun update(context: Context) {
+        if (context.getRepository().credentials.get() == null)
+            context.writeKey(StoreKey.AppVersionCode, BuildConfig.VERSION_CODE)
+
+        val lastVersionCode = context.readKey(StoreKey.AppVersionCode)
+        var versionCode = lastVersionCode
+
+        while (versionCode < BuildConfig.VERSION_CODE) {
+            when (versionCode) {
+                -1 -> merge4To5(context)
+            }
+
+            versionCode++
+        }
+    }
+
+    private fun merge4To5(context: Context) {
+        val repositoryCredentials = context.getRepository().credentials
+        val credentials = repositoryCredentials.get()
+            ?: return
+
+        SecretStore.delete(context)
+
+        runBlocking {
+            repositoryCredentials.update(
+                credentials.copy(
+                    biometricProtectedPrivateKey = null,
+                    biometricProtectedPrivateKeyIV = null,
+                    biometricEnabled = false
+                )
+            )
+        }
+    }
+}

app/src/main/java/dev/medzik/librepass/android/utils/Store.kt

@@ -54,6 +54,11 @@ sealed class StoreKey<T>(
         stringSetPreferencesKey("custom_servers"),
         emptySet()
     )
+
+    data object AppVersionCode : StoreKey<Int>(
+        intPreferencesKey("app_version_code"),
+        -1
+    )
 }
 
 enum class ThemeValues {