app: add configuration directory migrator

This adds an automatic configuration migrator which moves the configuration files previously located
on the external public-ish directory to the private app storage, so that existing users can seamlessly
transition to the next version.

The cache directory containing the logs is cleared instead of being migrated, because those files are
considered disposable.

GitHub: related to #103

1 files changed, 6 insertions, 3 deletions

diff --git a/app/src/main/java/org/pacien/tincapp/context/App.kt b/app/src/main/java/org/pacien/tincapp/context/App.kt
index 4d8d5d0..d825d78 100644
--- a/app/src/main/java/org/pacien/tincapp/context/App.kt
+++ b/app/src/main/java/org/pacien/tincapp/context/App.kt
@@ -28,6 +28,7 @@ import android.os.Handler
 import androidx.annotation.StringRes
 import org.pacien.tincapp.BuildConfig
 import org.pacien.tincapp.R
+import org.slf4j.Logger
 import org.slf4j.LoggerFactory
 
 /**
@@ -39,15 +40,17 @@ class App : Application() {
     appContext = applicationContext
     handler = Handler()
     AppLogger.configure()
-    setupCrashHandler()
 
     val logger = LoggerFactory.getLogger(this.javaClass)
+    setupCrashHandler(logger)
+
     logger.info("Starting tinc app {} ({} build), running on {} ({})",
       BuildConfig.VERSION_NAME, BuildConfig.BUILD_TYPE, Build.VERSION.CODENAME, Build.VERSION.RELEASE)
+
+    ConfigurationDirectoryMigrator().migrate()
   }
 
-  private fun setupCrashHandler() {
-    val logger = LoggerFactory.getLogger(this.javaClass)
+  private fun setupCrashHandler(logger: Logger) {
     val systemCrashHandler = Thread.getDefaultUncaughtExceptionHandler()!!
     val crashRecorder = CrashRecorder(logger, systemCrashHandler)
     Thread.setDefaultUncaughtExceptionHandler(crashRecorder)