Handle crash upon app launch when storage folder is removed externally

app/src/main/java/dev/arkbuilders/arkmemo/models/LoadError.kt

@@ -0,0 +1,5 @@
+package dev.arkbuilders.arkmemo.models
+
+sealed interface LoadError
+
+data class RootNotFound(val rootPath: String) : LoadError

app/src/main/java/dev/arkbuilders/arkmemo/preferences/MemoPreferences.kt

@@ -12,4 +12,6 @@ interface MemoPreferences {
     fun storeCrashReportEnabled(enabled: Boolean)
 
     fun getCrashReportEnabled(): Boolean
+
+    fun storageNotAvailable(): Boolean
 }

app/src/main/java/dev/arkbuilders/arkmemo/preferences/MemoPreferencesImpl.kt

@@ -7,6 +7,7 @@ import dev.arkbuilders.arkmemo.utils.CRASH_REPORT_ENABLE
 import java.nio.file.Path
 import javax.inject.Inject
 import kotlin.io.path.Path
+import kotlin.io.path.exists
 
 private const val NAME = "memo_prefs"
 private const val CURRENT_NOTES_PATH = "current_notes_path"
@@ -33,4 +34,8 @@ class MemoPreferencesImpl
         }
 
         override fun getCrashReportEnabled(): Boolean = sharedPreferences.getBoolean(CRASH_REPORT_ENABLE, true)
+
+        override fun storageNotAvailable(): Boolean {
+            return getPath().isEmpty() || !getNotesStorage().exists()
+        }
     }

app/src/main/java/dev/arkbuilders/arkmemo/repo/NotesRepoHelper.kt

@@ -10,6 +10,7 @@ import dev.arkbuilders.arklib.user.properties.PropertiesStorageRepo
 import dev.arkbuilders.arkmemo.models.Note
 import dev.arkbuilders.arkmemo.preferences.MemoPreferences
 import dev.arkbuilders.arkmemo.utils.isEqual
+import kotlinx.coroutines.CoroutineExceptionHandler
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import java.nio.file.Path
@@ -30,9 +31,20 @@ class NotesRepoHelper
         private lateinit var root: Path
         private lateinit var propertiesStorage: PropertiesStorage
 
+        private val exceptionHandler by lazy {
+            CoroutineExceptionHandler { _, throwable ->
+                Log.e("tuancoltech", "exceptionHandler got an exception: " + throwable::class.simpleName)
+            }
+        }
+
+        @Throws(UnknownError::class)
         suspend fun init() {
             root = memoPreferences.getNotesStorage()
-            propertiesStorage = propertiesStorageRepo.provide(RootIndex.provide(root))
+            try {
+                propertiesStorage = propertiesStorageRepo.provide(RootIndex.provide(root, exceptionHandler))
+            } catch (e: Exception) {
+                Log.e("tuancoltech", "NotesRepoHelper init() exception: " + e.message)
+            }
         }
 
         suspend fun persistNoteProperties(

app/src/main/java/dev/arkbuilders/arkmemo/repo/graphics/GraphicNotesRepo.kt

@@ -54,6 +54,7 @@ class GraphicNotesRepo
         private val thumbDirectory by lazy { context.getExternalFilesDir(Environment.DIRECTORY_PICTURES) }
 
         override suspend fun init() {
+            Log.d("tuancoltech", "GraphicNotesRepo initializing!")
             helper.init()
             root = memoPreferences.getNotesStorage()
         }

app/src/main/java/dev/arkbuilders/arkmemo/repo/text/TextNotesRepo.kt

@@ -36,7 +36,12 @@ class TextNotesRepo
 
         override suspend fun init() {
             root = memoPreferences.getNotesStorage()
-            helper.init()
+            try {
+                Log.d("tuancoltech", "TextNotesRepo initializing!")
+                helper.init()
+            } catch (exception: Exception) {
+                Log.e("tuancoltech", "helper.init exception: " + exception)
+            }
         }
 
         override suspend fun save(
@@ -127,6 +132,7 @@ class TextNotesRepo
                         }
                     } catch (e: Exception) {
                         e.printStackTrace()
+                        Log.e("tuancoltech", "TextNotesRepo readStorage exception path: " + path)
                         TextNote(
                             text = "",
                         )

app/src/main/java/dev/arkbuilders/arkmemo/repo/voices/VoiceNotesRepo.kt

@@ -34,6 +34,7 @@ class VoiceNotesRepo
 
         override suspend fun init() {
             root = memoPreferences.getNotesStorage()
+            Log.d("tuancoltech", "VoicesNotesRepo initializing!")
             helper.init()
         }
 

app/src/main/java/dev/arkbuilders/arkmemo/ui/activities/MainActivity.kt

@@ -15,13 +15,16 @@ import dagger.hilt.android.AndroidEntryPoint
 import dev.arkbuilders.arkmemo.R
 import dev.arkbuilders.arkmemo.contracts.PermissionContract
 import dev.arkbuilders.arkmemo.databinding.ActivityMainBinding
+import dev.arkbuilders.arkmemo.models.RootNotFound
 import dev.arkbuilders.arkmemo.preferences.MemoPreferences
+import dev.arkbuilders.arkmemo.ui.dialogs.CommonActionDialog
 import dev.arkbuilders.arkmemo.ui.dialogs.FilePickerDialog
 import dev.arkbuilders.arkmemo.ui.fragments.BaseFragment
 import dev.arkbuilders.arkmemo.ui.fragments.EditTextNotesFragment
 import dev.arkbuilders.arkmemo.ui.fragments.NotesFragment
 import dev.arkbuilders.components.filepicker.onArkPathPicked
 import javax.inject.Inject
+import kotlin.io.path.exists
 
 @AndroidEntryPoint
 class MainActivity : AppCompatActivity(R.layout.activity_main) {
@@ -92,8 +95,13 @@ class MainActivity : AppCompatActivity(R.layout.activity_main) {
             }
         }
 
-        if (memoPreferences.getPath().isEmpty()) {
-            FilePickerDialog.show(this, supportFragmentManager)
+        val storageFolderExisting = memoPreferences.getNotesStorage().exists()
+        if (memoPreferences.storageNotAvailable()) {
+            if (!storageFolderExisting) {
+                showNoNoteStorageDialog(RootNotFound(rootPath = memoPreferences.getPath()))
+            } else {
+                FilePickerDialog.show(this, supportFragmentManager)
+            }
 
             supportFragmentManager.onArkPathPicked(this) {
                 memoPreferences.storePath(it.toString())
@@ -104,6 +112,27 @@ class MainActivity : AppCompatActivity(R.layout.activity_main) {
         }
     }
 
+    private fun showNoNoteStorageDialog(error: RootNotFound) {
+        val loadFailDialog =
+            CommonActionDialog(
+                title = getString(R.string.error_load_notes_failed_title),
+                message = getString(R.string.error_load_notes_failed_description, error.rootPath),
+                positiveText = R.string.error_load_notes_failed_positive_action,
+                negativeText = R.string.error_load_notes_failed_negative_action,
+                isAlert = false,
+                onPositiveClick = {
+                    FilePickerDialog.show(this, supportFragmentManager)
+                },
+                onNegativeClicked = {
+                    finish()
+                },
+                onCloseClicked = {
+                    finish()
+                },
+            )
+        loadFailDialog.show(supportFragmentManager, CommonActionDialog.TAG)
+    }
+
     override fun onSaveInstanceState(outState: Bundle) {
         outState.putString(CURRENT_FRAGMENT_TAG, fragment.tag)
         super.onSaveInstanceState(outState)

app/src/main/java/dev/arkbuilders/arkmemo/ui/dialogs/FilePickerDialog.kt

@@ -24,20 +24,18 @@ class FilePickerDialog : ArkFilePickerFragment() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        if (storageNotAvailable()) {
+        if (memoPreferences.storageNotAvailable()) {
             isCancelable = false
         }
     }
 
     override fun dismiss() {
         super.dismiss()
-        if (storageNotAvailable()) {
+        if (memoPreferences.storageNotAvailable()) {
             activity?.finish()
         }
     }
 
-    private fun storageNotAvailable(): Boolean = memoPreferences.getPath().isEmpty()
-
     companion object {
         private const val TAG = "file_picker"
         private lateinit var fragmentManager: FragmentManager

app/src/main/java/dev/arkbuilders/arkmemo/ui/viewmodels/NotesViewModel.kt

@@ -1,5 +1,6 @@
 package dev.arkbuilders.arkmemo.ui.viewmodels
 
+import android.util.Log
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
@@ -15,6 +16,7 @@ import dev.arkbuilders.arkmemo.models.VoiceNote
 import dev.arkbuilders.arkmemo.repo.NotesRepo
 import dev.arkbuilders.arkmemo.utils.extractDuration
 import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.CoroutineExceptionHandler
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.delay
@@ -38,10 +40,27 @@ class NotesViewModel
         private val notes = MutableStateFlow(listOf<Note>())
         private val mSaveNoteResultLiveData = MutableLiveData<SaveNoteResult>()
         private var searchJob: Job? = null
+        private var initializeSuccess = true
+
+        private val initExceptionHandler by lazy {
+            CoroutineExceptionHandler { _, throwable ->
+                Log.e("tuancoltech", "NotesViewModel initExceptionHandler got an exception: " + throwable::class.simpleName)
+                throwable.printStackTrace()
+                initializeSuccess = false
+            }
+        }
+
+        private val readStorageExceptionHandler by lazy {
+            CoroutineExceptionHandler { _, throwable ->
+                Log.e("tuancoltech", "NotesViewModel readStorageExceptionHandler got an exception: " + throwable::class.simpleName)
+                throwable.printStackTrace()
+                initializeSuccess = false
+            }
+        }
 
         fun init(extraBlock: () -> Unit) {
             val initJob =
-                viewModelScope.launch(iODispatcher) {
+                viewModelScope.launch(iODispatcher + initExceptionHandler) {
                     textNotesRepo.init()
                     graphicNotesRepo.init()
                     voiceNotesRepo.init()

app/src/main/res/values/strings.xml

@@ -117,5 +117,9 @@
     </plurals>
     <string name="select_all">Select All</string>
     <string name="deselect_all">Deselect All</string>
+    <string name="error_load_notes_failed_title">Cannot find notes</string>
+    <string name="error_load_notes_failed_description">The folder %s with notes data cannot be located.\nPlease select a new folder.</string>
+    <string name="error_load_notes_failed_positive_action">Select</string>
+    <string name="error_load_notes_failed_negative_action">Leave</string>
 
 </resources>

gradle/libs.versions.toml

@@ -22,7 +22,7 @@ navigationFragmentKtx = "2.5.2"
 preferenceKtx = "1.2.0"
 lifecycleViewmodelKtx = "2.5.1"
 arkFilepicker = "0.2.0"
-arkLib = "0.3.5"
+arkLib = "0.3.6-snapshot-crash-01"
 googleHiltAndroid = "2.48"
 googleHiltCompiler = "2.48"
 googleFirebaseBom = "33.3.0"

settings.gradle

@@ -26,6 +26,7 @@ dependencyResolutionManagement {
                 password = "\u0037\u0066\u0066\u0036\u0030\u0039\u0033\u0066\u0032\u0037\u0033\u0036\u0033\u0037\u0064\u0036\u0037\u0066\u0038\u0030\u0034\u0039\u0062\u0030\u0039\u0038\u0039\u0038\u0066\u0034\u0066\u0034\u0031\u0064\u0062\u0033\u0064\u0033\u0038\u0065"
             }
         }
+        mavenLocal()
     }
 
     versionCatalogs {