Add dialog to import messages

app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/MainActivity.kt

@@ -8,10 +8,12 @@ import android.content.pm.ShortcutInfo
 import android.content.pm.ShortcutManager
 import android.graphics.drawable.Icon
 import android.graphics.drawable.LayerDrawable
+import android.net.Uri
 import android.os.Bundle
 import android.provider.Telephony
 import android.view.Menu
 import android.view.MenuItem
+import com.simplemobiletools.commons.dialogs.FilePickerDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.*
 import com.simplemobiletools.commons.models.FAQItem
@@ -19,12 +21,14 @@ import com.simplemobiletools.smsmessenger.BuildConfig
 import com.simplemobiletools.smsmessenger.R
 import com.simplemobiletools.smsmessenger.adapters.ConversationsAdapter
 import com.simplemobiletools.smsmessenger.dialogs.ExportMessagesDialog
+import com.simplemobiletools.smsmessenger.dialogs.ImportMessagesDialog
 import com.simplemobiletools.smsmessenger.extensions.*
 import com.simplemobiletools.smsmessenger.helpers.EXPORT_MIME_TYPE
 import com.simplemobiletools.smsmessenger.helpers.THREAD_ID
 import com.simplemobiletools.smsmessenger.helpers.THREAD_TITLE
 import com.simplemobiletools.smsmessenger.models.Conversation
 import com.simplemobiletools.smsmessenger.models.Events
+import java.io.FileOutputStream
 import java.io.OutputStream
 import java.util.ArrayList
 import java.util.Arrays
@@ -115,7 +119,7 @@ class MainActivity : SimpleActivity() {
             R.id.search -> launchSearch()
             R.id.settings -> launchSettings()
             R.id.export_messages -> tryToExportMessages()
-            R.id.import_messages -> launchSettings()
+            R.id.import_messages -> tryImportMessages()
             R.id.about -> launchAbout()
             else -> return super.onOptionsItemSelected(item)
         }
@@ -131,7 +135,7 @@ class MainActivity : SimpleActivity() {
                 finish()
             }
         } else if (requestCode == PICK_IMPORT_SOURCE_INTENT && resultCode == Activity.RESULT_OK && resultData != null && resultData.data != null) {
-
+            tryImportMessagesFromFile(resultData.data!!)
         } else if (requestCode == PICK_EXPORT_FILE_INTENT && resultCode == Activity.RESULT_OK && resultData != null && resultData.data != null) {
             val outputStream = contentResolver.openOutputStream(resultData.data!!)
             exportMessagesTo(outputStream)
@@ -346,7 +350,7 @@ class MainActivity : SimpleActivity() {
             handlePermission(PERMISSION_WRITE_STORAGE) {
                 if (it) {
                     ExportMessagesDialog(this, config.lastExportPath, false) { file ->
-                        getFileOutputStream(file.toFileDirItem(this), true) { outStream->
+                        getFileOutputStream(file.toFileDirItem(this), true) { outStream ->
                             exportMessagesTo(outStream)
                         }
                     }
@@ -361,6 +365,61 @@ class MainActivity : SimpleActivity() {
         }
     }
 
+    private fun tryImportMessages() {
+        if (isQPlus()) {
+            Intent(Intent.ACTION_GET_CONTENT).apply {
+                addCategory(Intent.CATEGORY_OPENABLE)
+                type = EXPORT_MIME_TYPE
+                startActivityForResult(this, PICK_IMPORT_SOURCE_INTENT)
+            }
+        } else {
+            handlePermission(PERMISSION_READ_STORAGE) {
+                if (it) {
+                    importEvents()
+                }
+            }
+        }
+    }
+
+    private fun importEvents() {
+        FilePickerDialog(this) {
+            showImportEventsDialog(it)
+        }
+    }
+
+    private fun showImportEventsDialog(path: String) {
+        ImportMessagesDialog(this, path) { refresh ->
+            if (refresh) {
+                runOnUiThread {
+                    // refresh
+                }
+            }
+        }
+    }
+
+    private fun tryImportMessagesFromFile(uri: Uri) {
+        when (uri.scheme) {
+            "file" -> showImportEventsDialog(uri.path!!)
+            "content" -> {
+                val tempFile = getTempFile("messages", "backup.json")
+                if (tempFile == null) {
+                    toast(R.string.unknown_error_occurred)
+                    return
+                }
+
+                try {
+                    val inputStream = contentResolver.openInputStream(uri)
+                    val out = FileOutputStream(tempFile)
+                    inputStream!!.copyTo(out)
+                    showImportEventsDialog(tempFile.absolutePath)
+                } catch (e: Exception) {
+                    showErrorToast(e)
+                }
+            }
+            else -> toast(R.string.invalid_file_format)
+        }
+    }
+
     @Subscribe(threadMode = ThreadMode.MAIN)
     fun refreshMessages(event: Events.RefreshMessages) {
         initMessenger()

app/src/main/kotlin/com/simplemobiletools/smsmessenger/dialogs/ImportMessagesDialog.kt

@@ -0,0 +1,38 @@
+package com.simplemobiletools.smsmessenger.dialogs
+
+import android.view.ViewGroup
+import androidx.appcompat.app.AlertDialog
+import com.simplemobiletools.commons.extensions.setupDialogStuff
+import com.simplemobiletools.smsmessenger.R
+import com.simplemobiletools.smsmessenger.activities.SimpleActivity
+import com.simplemobiletools.smsmessenger.extensions.config
+import kotlinx.android.synthetic.main.dialog_import_messages.view.import_mms_checkbox
+import kotlinx.android.synthetic.main.dialog_import_messages.view.import_sms_checkbox
+
+class ImportMessagesDialog(
+    private val activity: SimpleActivity,
+    private val path: String,
+    private val callback: (refresh: Boolean) -> Unit,
+) {
+
+    private val config = activity.config
+
+    init {
+        val view = (activity.layoutInflater.inflate(R.layout.dialog_import_messages, null) as ViewGroup).apply {
+            import_sms_checkbox.isChecked = config.importSms
+            import_mms_checkbox.isChecked = config.importMms
+        }
+
+        AlertDialog.Builder(activity)
+            .setPositiveButton(R.string.ok, null)
+            .setNegativeButton(R.string.cancel, null)
+            .create().apply {
+                activity.setupDialogStuff(view, this, R.string.import_messages) {
+                    getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener {
+                        dismiss()
+                        callback.invoke(true)
+                    }
+                }
+            }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/smsmessenger/helpers/Config.kt

@@ -38,4 +38,12 @@ class Config(context: Context) : BaseConfig(context) {
         get() = prefs.getBoolean(EXPORT_MMS, true)
         set(exportMms) = prefs.edit().putBoolean(EXPORT_MMS, exportMms).apply()
 
+    var importSms: Boolean
+        get() = prefs.getBoolean(IMPORT_SMS, true)
+        set(importSms) = prefs.edit().putBoolean(IMPORT_SMS, importSms).apply()
+
+    var importMms: Boolean
+        get() = prefs.getBoolean(IMPORT_MMS, true)
+        set(importMms) = prefs.edit().putBoolean(IMPORT_MMS, importMms).apply()
+
 }

app/src/main/kotlin/com/simplemobiletools/smsmessenger/helpers/Constants.kt

@@ -20,6 +20,8 @@ const val EXPORT_SMS = "export_sms"
 const val EXPORT_MMS = "export_mms"
 const val EXPORT_MIME_TYPE = "application/json"
 const val EXPORT_FILE_EXT = ".json"
+const val IMPORT_SMS = "import_sms"
+const val IMPORT_MMS = "import_mms"
 
 private const val PATH = "com.simplemobiletools.smsmessenger.action."
 const val MARK_AS_READ = PATH + "mark_as_read"

app/src/main/res/layout/dialog_import_messages.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/import_messages_scrollview"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <LinearLayout
+        android:id="@+id/import_messages_holder"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:paddingStart="@dimen/activity_margin"
+        android:paddingTop="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin">
+
+        <com.simplemobiletools.commons.views.MyAppCompatCheckbox
+            android:id="@+id/import_sms_checkbox"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="@dimen/activity_margin"
+            android:paddingTop="@dimen/small_margin"
+            android:paddingBottom="@dimen/small_margin"
+            android:text="@string/import_sms" />
+
+        <com.simplemobiletools.commons.views.MyAppCompatCheckbox
+            android:id="@+id/import_mms_checkbox"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="@dimen/activity_margin"
+            android:paddingTop="@dimen/small_margin"
+            android:paddingBottom="@dimen/small_margin"
+            android:text="@string/import_mms" />
+
+    </LinearLayout>
+</ScrollView>

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

@@ -54,6 +54,8 @@
     <string name="export_sms">Export SMS</string>
     <string name="export_mms">Export MMS</string>
     <string name="import_messages">Import messages</string>
+    <string name="import_sms">Import SMS</string>
+    <string name="import_mms">Import MMS</string>
 
     <!-- FAQ -->
     <string name="faq_1_title">Why does the app require access to the internet?</string>