fix #539, make Import notes more flexible, handle nonjsons too

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

@@ -926,10 +926,10 @@ class MainActivity : SimpleActivity() {
         }
     }
 
-    private fun importNotes(path: String) {
+    private fun importNotes(path: String, filename: String) {
         toast(R.string.importing)
         ensureBackgroundThread {
-            NotesImporter(this).importNotes(path) {
+            NotesImporter(this).importNotes(path, filename) {
                 toast(
                     when (it) {
                         NotesImporter.ImportResult.IMPORT_OK -> R.string.importing_successful
@@ -944,19 +944,20 @@ class MainActivity : SimpleActivity() {
 
     private fun importNotesFrom(uri: Uri) {
         when (uri.scheme) {
-            "file" -> importNotes(uri.path!!)
+            "file" -> importNotes(uri.path!!, uri.path!!.getFilenameFromPath())
             "content" -> {
-                val tempFile = getTempFile("messages", "backup.json")
+                val tempFile = getTempFile("messages", "backup.txt")
                 if (tempFile == null) {
                     toast(R.string.unknown_error_occurred)
                     return
                 }
 
                 try {
+                    val filename = getFilenameFromUri(uri)
                     val inputStream = contentResolver.openInputStream(uri)
                     val out = FileOutputStream(tempFile)
                     inputStream!!.copyTo(out)
-                    importNotes(tempFile.absolutePath)
+                    importNotes(tempFile.absolutePath, filename)
                 } catch (e: Exception) {
                     showErrorToast(e)
                 }

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

@@ -2,8 +2,10 @@ package com.simplemobiletools.notes.pro.helpers
 
 import android.content.Context
 import com.google.gson.Gson
+import com.google.gson.JsonSyntaxException
 import com.google.gson.reflect.TypeToken
 import com.simplemobiletools.commons.extensions.showErrorToast
+import com.simplemobiletools.commons.helpers.PROTECTION_NONE
 import com.simplemobiletools.commons.helpers.ensureBackgroundThread
 import com.simplemobiletools.notes.pro.extensions.notesDB
 import com.simplemobiletools.notes.pro.models.Note
@@ -18,7 +20,7 @@ class NotesImporter(private val context: Context) {
     private var notesImported = 0
     private var notesFailed = 0
 
-    fun importNotes(path: String, callback: (result: ImportResult) -> Unit) {
+    fun importNotes(path: String, filename: String, callback: (result: ImportResult) -> Unit) {
         ensureBackgroundThread {
             try {
                 val inputStream = if (path.contains("/")) {
@@ -45,6 +47,34 @@ class NotesImporter(private val context: Context) {
                         }
                     }
                 }
+            } catch (e: JsonSyntaxException) {
+                // Import notes expects a json with note name, content etc, but lets be more flexible and accept the basic files with note content only too
+                val inputStream = if (path.contains("/")) {
+                    File(path).inputStream()
+                } else {
+                    context.assets.open(path)
+                }
+
+                inputStream.bufferedReader().use { reader ->
+                    val text = reader.readText()
+                    val note = Note(null, filename, text, NoteType.TYPE_TEXT.value, "", PROTECTION_NONE, "")
+                    var i = 1
+                    if (context.notesDB.getNoteIdWithTitle(note.title) != null) {
+                        while (true) {
+                            val tryTitle = "$filename ($i)"
+                            if (context.notesDB.getNoteIdWithTitle(tryTitle) == null) {
+                                break
+                            }
+                            i++
+                        }
+
+                        note.title = "$filename ($i)"
+                    }
+
+                    context.notesDB.insertOrUpdate(note)
+                    notesImported++
+                }
+
             } catch (e: Exception) {
                 context.showErrorToast(e)
                 notesFailed++