export is implemented, import is broken

app/src/main/java/com/denizd/textbasic/fragment/SettingsNewFragment.kt

@@ -1,14 +1,21 @@
 package com.denizd.textbasic.fragment
 
 import android.annotation.SuppressLint
+import android.app.Activity
 import android.content.Context
+import android.content.Intent
 import android.content.res.ColorStateList
 import android.graphics.Color
+import android.net.Uri
 import android.os.Bundle
+import android.os.Environment
+import android.util.Log
 import android.util.TypedValue
 import android.view.View
 import android.view.ViewGroup
 import android.widget.ImageButton
+import androidx.activity.result.ActivityResultLauncher
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.annotation.ColorInt
 import androidx.annotation.StringRes
 import androidx.transition.TransitionManager
@@ -19,12 +26,23 @@ import com.denizd.textbasic.databinding.FragmentSettingsNewBinding
 import com.denizd.textbasic.db.QuoteStorage
 import com.denizd.textbasic.sheet.TextSheet
 import com.denizd.textbasic.util.getConstrast
+import com.denizd.textbasic.util.showSnackBar
 import com.denizd.textbasic.util.viewBinding
 import com.denizd.textbasic.widget.CanvasText
+import com.google.gson.Gson
 import com.skydoves.colorpickerview.ColorEnvelope
 import com.skydoves.colorpickerview.ColorPickerDialog
 import com.skydoves.colorpickerview.listeners.ColorEnvelopeListener
+import java.io.BufferedWriter
+import java.io.File
+import java.io.FileReader
+import java.io.FileWriter
+import java.io.IOException
+import java.text.SimpleDateFormat
 import java.util.Calendar
+import java.util.Date
+import java.util.Locale
+
 
 class SettingsNewFragment : BaseFragment(R.layout.fragment_settings_new) {
 
@@ -32,6 +50,8 @@ class SettingsNewFragment : BaseFragment(R.layout.fragment_settings_new) {
 
     private val binding: FragmentSettingsNewBinding by viewBinding(FragmentSettingsNewBinding::bind)
 
+    private lateinit var resultIntent: ActivityResultLauncher<Intent>
+
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
@@ -236,6 +256,36 @@ class SettingsNewFragment : BaseFragment(R.layout.fragment_settings_new) {
             }
         }
 
+        binding.buttonImport.setOnClickListener {
+            importFile()
+        }
+
+        resultIntent = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
+            try {
+                if (result.resultCode == Activity.RESULT_OK) {
+                    val data = result.data
+                    data?.let {
+                        it.data?.let { u ->
+//                            val s = BufferedReader(FileReader(File(u.path ?: throw IllegalArgumentException()))).readLines().joinToString()
+                            val a = Gson().fromJson(FileReader(getFile(getApplicationContext(), u)), Array<String>::class.java)
+                            Log.d("TAGSARELOST", a[0])
+                        }
+                    }
+                }
+            } catch (e: IllegalArgumentException) {
+
+            }
+        }
+
+        binding.buttonExport.setOnClickListener {
+            val date = SimpleDateFormat("yyyyMMddHHmmss", Locale.ROOT).format(Date(System.currentTimeMillis())).run {
+                this.substring(0, 8) + "T" + this.substring(8)
+            }
+            val fileName = getString(R.string.export_file_name, date)
+            Log.d("TAGSARELOST", fileName)
+            createFile(fileName, "hello test")
+        }
+
         // Set click listener for showing licences dialogue
         binding.buttonLicences.setOnClickListener {
             openBottomSheet(
@@ -262,6 +312,23 @@ class SettingsNewFragment : BaseFragment(R.layout.fragment_settings_new) {
         updatePreview()
     }
 
+    @Throws(IOException::class)
+    fun getFile(context: Context, uri: Uri): File {
+        val destinationFilename =
+            File(context.filesDir.path + File.separatorChar + queryName(context, uri))
+        try {
+            context.contentResolver.openInputStream(uri).use { ins ->
+                createFileFromStream(
+                    ins,
+                    destinationFilename
+                )
+            }
+        } catch (ex: Exception) {
+            ex.printStackTrace()
+        }
+        return destinationFilename
+    }
+
     private fun setGravityButtons(buttons: List<ImageButton>, gravity: Int) {
         val transparent = context.getColor(android.R.color.transparent)
 
@@ -374,10 +441,31 @@ class SettingsNewFragment : BaseFragment(R.layout.fragment_settings_new) {
             .show()
     }
 
+    private fun importFile() {
+        var intent = Intent(Intent.ACTION_OPEN_DOCUMENT)
+        intent.addCategory(Intent.CATEGORY_OPENABLE)
+        intent.type = "application/json"
+        intent = Intent.createChooser(intent, "Choose file")
+        resultIntent.launch(intent)
+    }
+
+    private fun createFile(fileName: String, content: String) {
+        val path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS)
+        try {
+            val writer = BufferedWriter(FileWriter(File(path, fileName)))
+            writer.write(content)
+            writer.close()
+            context.theme.showSnackBar(
+                binding.coordinatorLayout,
+                getString(R.string.settings_fragment_export_successful, fileName),
+            )
+        } catch (e: IOException) {
+            e.printStackTrace()
+        }
+    }
+
     private fun updatePreview() {
-
         val bitmap = CanvasText.drawText(context, true)
-
         binding.textPreview.setImageBitmap(bitmap)
     }
 }

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

@@ -72,6 +72,7 @@
     <string name="sheet_licences_header">Lizenzen</string>
 
     <string name="settings_misc_app_version">App-Version</string>
+    <string name="settings_fragment_export_successful">Zum Dokumenten-Ordner exportiert: %s</string>
 
     <string name="edit">Text bearbeiten</string>
     <string name="nav_items_entries">Einträge</string>

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

@@ -73,6 +73,9 @@
 
     <string name="settings_misc_app_version">App Version</string>
 
+    <string name="export_file_name" translatable="false">textbasic_export_%s.json</string>
+    <string name="settings_fragment_export_successful">Exported to Documents folder: %s</string>
+
     <string name="edit">Edit Text</string>
     <string name="nav_items_entries">Entries</string>
     <string name="guide">Guide</string>