moving more db related functions to Room

app/src/main/kotlin/com/simplemobiletools/notes/pro/activities/MainActivity.kt

@@ -236,11 +236,10 @@ class MainActivity : SimpleActivity() {
     }
 
     private fun handleUri(uri: Uri) {
-        val id = dbHelper.getNoteId(uri.path)
-
-        if (id > 0) {
-            updateSelectedNote(id)
-            return
+        NotesHelper(this).getNoteIdWithPath(uri.path) {
+            if (it != null && it > 0L) {
+                updateSelectedNote(it)
+                return@getNoteIdWithPath
             }
 
             handlePermission(PERMISSION_WRITE_STORAGE) {
@@ -249,6 +248,7 @@ class MainActivity : SimpleActivity() {
                 }
             }
         }
+    }
 
     private fun initViewPager() {
         NotesHelper(this).getNotes {

app/src/main/kotlin/com/simplemobiletools/notes/pro/fragments/NoteFragment.kt

@@ -117,7 +117,7 @@ class NoteFragment : androidx.fragment.app.Fragment() {
     }
 
     private fun setupFragment() {
-        val config = config!!
+        val config = config ?: return
         view.notes_view.apply {
             typeface = if (config.monospacedFont) Typeface.MONOSPACE else Typeface.DEFAULT
 
@@ -163,6 +163,10 @@ class NoteFragment : androidx.fragment.app.Fragment() {
     fun getNotesView() = view.notes_view
 
     fun saveText(force: Boolean) {
+        if (note == null) {
+            return
+        }
+
         if (note!!.path.isNotEmpty() && !File(note!!.path).exists()) {
             return
         }

app/src/main/kotlin/com/simplemobiletools/notes/pro/helpers/DBHelper.kt

@@ -7,7 +7,6 @@ import android.database.sqlite.SQLiteDatabase
 import android.database.sqlite.SQLiteDatabase.CONFLICT_IGNORE
 import android.database.sqlite.SQLiteOpenHelper
 import com.simplemobiletools.commons.extensions.getIntValue
-import com.simplemobiletools.commons.extensions.getLongValue
 import com.simplemobiletools.notes.pro.R
 import com.simplemobiletools.notes.pro.models.Note
 import com.simplemobiletools.notes.pro.models.Widget
@@ -92,22 +91,6 @@ class DBHelper private constructor(private val mContext: Context) : SQLiteOpenHe
         }
     }
 
-    fun getNoteId(path: String): Long {
-        val cols = arrayOf(COL_ID)
-        val selection = "$COL_PATH = ?"
-        val selectionArgs = arrayOf(path)
-        var cursor: Cursor? = null
-        try {
-            cursor = mDb.query(NOTES_TABLE_NAME, cols, selection, selectionArgs, null, null, null)
-            if (cursor?.moveToFirst() == true) {
-                return cursor.getLongValue(COL_ID)
-            }
-        } finally {
-            cursor?.close()
-        }
-        return 0
-    }
-
     fun getWidgets(): ArrayList<Widget> {
         val widgets = ArrayList<Widget>()
         val cols = arrayOf(COL_WIDGET_ID, COL_NOTE_ID)

app/src/main/kotlin/com/simplemobiletools/notes/pro/helpers/NotesHelper.kt

@@ -42,6 +42,15 @@ class NotesHelper(val activity: Activity) {
         }.start()
     }
 
+    fun getNoteIdWithPath(path: String, callback: (id: Long?) -> Unit) {
+        Thread {
+            val id = activity.notesDB.getNoteIdWithPath(path)
+            activity.runOnUiThread {
+                callback(id)
+            }
+        }.start()
+    }
+
     fun insertOrUpdateNote(note: Note, callback: ((newNoteId: Long) -> Unit)? = null) {
         Thread {
             val noteId = activity.notesDB.insertOrUpdate(note)

app/src/main/kotlin/com/simplemobiletools/notes/pro/interfaces/NotesDao.kt

@@ -11,6 +11,9 @@ interface NotesDao {
     @Query("SELECT * FROM notes WHERE id = :id")
     fun getNoteWithId(id: Int): Note?
 
+    @Query("SELECT id FROM notes WHERE path = :path")
+    fun getNoteIdWithPath(path: String): Long?
+
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     fun insertOrUpdate(note: Note): Long