add* backup and restore db

android/app/src/main/AndroidManifest.xml

@@ -6,6 +6,7 @@
          additional functionality it is fine to subclass or reimplement
          FlutterApplication and put your custom class here. -->
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <application
         android:name="${applicationName}"
         android:label="assetstock"

lib/home.dart

@@ -9,6 +9,8 @@ import 'package:path_provider/path_provider.dart';
 import 'main.dart';
 import 'util/prefsKey.dart';
 import 'util/dbHandler.dart';
+import 'package:permission_handler/permission_handler.dart' as pHandler;
+
 
 class Home extends StatefulWidget {
   Home({Key key}) : super(key: key);
@@ -43,12 +45,14 @@ class _HomeState extends State<Home> {
     super.initState();
     WidgetsBinding.instance.addPostFrameCallback((_) async {
 //      await loadMenu();
+      await util.permissionCheck(context,pHandler.Permission.storage,()async{print("storage permit granted!");},customMessage: " untuk menyimpan data backup");
+
     });
   }
 
   clearData(context)async{
     String errMsg;
-    Directory documentsDirectory = await getApplicationDocumentsDirectory();
+    Directory documentsDirectory = await getExternalStorageDirectory();
     String path = join(documentsDirectory.path, "assets.db");
     File db = File(path);
     if(db.existsSync()){
@@ -120,7 +124,7 @@ class _HomeState extends State<Home> {
         padding: const EdgeInsets.only(bottom:45.0),
         child: FloatingActionButton(
           onPressed: ()async{
-            Directory documentsDirectory = await getApplicationDocumentsDirectory();
+            Directory documentsDirectory = await getExternalStorageDirectory();
             String path = join(documentsDirectory.path, "assets.db");
             File db = File(path);
             if(db.existsSync()){
@@ -168,7 +172,27 @@ class _HomeState extends State<Home> {
                               Text('Change Host Address',style: TextStyle(color: Colors.blueGrey,fontWeight: FontWeight.w500),)
                             ],
                           ),
-                        )
+                        ),
+                        PopupMenuItem(
+                          value:'backup',
+                          child: Row(
+                            children: <Widget>[
+                              Icon(Icons.save,color: Colors.black,),
+                              SizedBox(width: 10,),
+                              Text('Backup Data')
+                            ],
+                          ),
+                        ),
+                        PopupMenuItem(
+                          value:'restore',
+                          child: Row(
+                            children: <Widget>[
+                              Icon(Icons.sync,color: Colors.black,),
+                              SizedBox(width: 10,),
+                              Text('Restore Data')
+                            ],
+                          ),
+                        ),
                       ],
                       onSelected: (value)async{
                         if(value == "changeAddress"){
@@ -196,6 +220,108 @@ class _HomeState extends State<Home> {
 
                           });
                         }
+                        if(value == 'backup'){
+                          if(prefs.getString(keyClass.dbName) != null){
+                            bool isBackup = await showDialog(context: context,builder: (context)=>AlertDialog(
+                              title: Text('Backup Data ?'),
+                              content: Text('Backup data akan menghapus dan mengganti data backup unit dan cabang sebelumnya.'),
+                              actions: <Widget>[
+                                TextButton(
+                                  child: Text('OK'),
+                                  onPressed: ()async{
+                                    Navigator.pop(context,true);
+                                  },
+                                ),
+                                TextButton(
+                                  child: Text('Cancel'),
+                                  onPressed: ()=>Navigator.pop(context,false),
+                                )
+                              ],
+                            ));
+                            if(isBackup??false){
+                              var result = await DBHelper.database.backupDb(context);
+                              util.showToast(result["STATUS"]==1?'NORMAL':'ERROR', result['MSG']);
+                            }
+                          }
+                          else{
+                            util.showToast('ERROR', "Data Unit cabang tidak ditemukan. Silakan get data terlbih dahulu.");
+                          }
+                        }
+                        if(value == 'restore'){
+                          if(prefs.getString(keyClass.dbName) == null){
+                            util.showToast('ERROR', "Data Unit cabang tidak ditemukan. Silakan get data terlbih dahulu.");
+                          }
+                          else{
+                            if(prefs.getString(keyClass.dbName) == prefs.getString(keyClass.backup_stock_id)){
+                              String stock_taking_id = prefs.getString(keyClass.dbName);
+                              if(stock_taking_id!=null){
+                                bool isRestore = await showDialog(context: context,builder: (context)=>AlertDialog(
+                                  title: Text('Restore Data ?'),
+                                  content: Text('Restore data akan menghapus dan mengganti data unit dan cabang yang ada dengan data backup.'),
+                                  actions: <Widget>[
+                                    TextButton(
+                                      child: Text('OK'),
+                                      onPressed: ()async{
+                                        Navigator.pop(context,true);
+                                      },
+                                    ),
+                                    TextButton(
+                                      child: Text('Cancel'),
+                                      onPressed: ()=>Navigator.pop(context,false),
+                                    )
+                                  ],
+                                ));
+                                if(isRestore??false){
+                                  var response;
+                                  bool isclear;
+                                  Directory documentsDirectory = await getExternalStorageDirectory();
+                                  String path = join(documentsDirectory.path, "assets.db");
+                                  File db = File(path);
+                                  if(db.existsSync()){
+                                    isclear = await clearData(context);
+                                  }
+                                  else{
+                                    isclear = true;
+                                  }
+                                  if(isclear??false){
+                                    var result = await DBHelper.database.restoreDb(context);
+                                    if(result["STATUS"]==1){
+                                      await prefs.remove(keyClass.dbName);
+                                      // await prefs.remove(keyClass.lastDownload);
+                                      // await prefs.remove(keyClass.lastUpload);
+                                      // await prefs.remove(keyClass.targetProccess);
+                                      // await prefs.remove(keyClass.submitProccess);
+                                      setState(() {
+                                      //   lastUpload = '';
+                                      //   lastDownload = '';
+                                      //   timeString = '';
+                                      });
+                                      // valueTab value = await DBHelper.database.getValue(keyClass.tgl_start);
+                                      // if(value != null)await prefs.setString(keyClass.lastDownload, DateFormat('dd-MM-yyyy HH:mm:ss').parse(value.value).toIso8601String());
+                                      // else {
+                                      //   await prefs.setString(keyClass.lastDownload, DateTime.now().toIso8601String());
+                                      // }
+                                      // value = await DBHelper.database.getValue(keyClass.stock_id);
+                                      // if(value != null) await prefs.setString(keyClass.stock_id,value.value);
+                                      // else {
+                                        await prefs.setString(keyClass.dbName,prefs.getString(keyClass.backup_stock_id));
+                                      // }
+                                      // loadState();
+                                      setState(() {
+                                      //   lastDownload = prefs.getString(keyClass.lastDownload);
+                                      });
+                                    }
+                                    response = result["MSG"];
+                                  }
+                                  if(response != null)util.showToast('GENERAL', response);
+                                }
+                              }
+                            }
+                            else {
+                              util.showToast("ERROR", "File Backup tidak ditemukan atau sudah selesai");
+                            }
+                          }
+                        }
                       },
                       child: Padding(
                         padding: const EdgeInsets.all(8.0),
@@ -322,6 +448,7 @@ class _HomeState extends State<Home> {
 //                                  await DBHelper.database.closeDb();
 //                                    var allUnits = await DBHelper.database.getAllAsset();
 //                                    print('${allUnits.length} Units');
+                                      if(prefs.getString(keyClass.backup_stock_id) == null) prefs.setString(keyClass.backup_stock_id,selected);
                                       util.showToast('ALERT','Data Downloaded');
                                     }
                                     if(value==-1.0){
@@ -379,7 +506,7 @@ class _HomeState extends State<Home> {
                         child: InkWell(
                           onTap: ()async{
                             await Future.delayed(Duration(milliseconds: 300));
-                            Directory documentsDirectory = await getApplicationDocumentsDirectory();
+                            Directory documentsDirectory = await getExternalStorageDirectory();
                             String path = join(documentsDirectory.path, "assets.db");
                             File db = File(path);
                             if(db.existsSync()) Navigator.pushNamed(context, '/stocking');
@@ -411,7 +538,7 @@ class _HomeState extends State<Home> {
                     InkWell(
                       onTap: ()async{
                         final file = File(
-                            "${(await getApplicationDocumentsDirectory()).path}/assets.db");
+                            "${(await getExternalStorageDirectory()).path}/assets.db");
                         if(file.existsSync()){
                           TextEditingController sendingUser = new TextEditingController();
                           sendingUser.text = prefs.getString(keyClass.user)??'';
@@ -497,7 +624,7 @@ class _HomeState extends State<Home> {
                     ),
                     InkWell(
                       onTap: ()async{
-                        Directory documentsDirectory = await getApplicationDocumentsDirectory();
+                        Directory documentsDirectory = await getExternalStorageDirectory();
                         String path = join(documentsDirectory.path, "assets.db");
                         File db = File(path);
                         if(db.existsSync()) await clearData(context);

lib/util/dbHandler.dart

@@ -1,3 +1,5 @@
+import 'dart:typed_data';
+
 import 'package:assetstock/util/Models.dart';
 import 'package:sqflite/sqflite.dart';
 import 'package:path_provider/path_provider.dart';
@@ -6,6 +8,10 @@ import 'dart:io';
 import 'dart:async';
 import 'package:path/path.dart';
 import 'package:intl/intl.dart';
+import 'package:assetstock/main.dart';
+import 'package:permission_handler/permission_handler.dart' as pHandler;
+
+
 
 class DBHelper{
   DBHelper._();
@@ -19,8 +25,70 @@ class DBHelper{
     return _db;
   }
 
+  backupDb(context) async{
+    var result = {"STATUS":0,"MSG":"Backup gagal!"};
+    var stock_id = prefs.getString(keyClass.dbName)??'';
+    if(stock_id != ''){
+      await util.permissionCheck(context,pHandler.Permission.storage,()async{
+        try{
+          // if(dbPath == null || dbPath == ''){
+          final database = await db;
+          var dbPath = database.path;
+          await DBHelper.database.closeDb();
+          // }
+          await prefs.remove(keyClass.backup_stock_id);
+          if(stock_id !='' && stock_id != null ) await prefs.setString(keyClass.backup_stock_id,stock_id);
+          //backupDatabase
+          print(["aaaaaa",dbPath]);
+          String backupPath = join(dbPath.substring(0,dbPath.indexOf("/Android"))+"/Download", "${prefs.getString(keyClass.backup_stock_id)}_assets.db");
+          print("bbbbbb");
+          File backupFile = new File(backupPath);
+          File dbFile = File(dbPath);
+          if(dbFile.existsSync()){
+            // dbFile.copySync(backupPath);
+            Uint8List byte = dbFile.readAsBytesSync();
+            backupFile.writeAsBytesSync(byte);
+            result = {"STATUS":1,"MSG":"Backup Berhasil!"};
+          }
+          else{
+            result = {"STATUS":0,"MSG":"Backup gagal data unit tidak ditemukan!"};
+            print('file backup dont exist tho');
+          }
+        }
+        catch(e){
+          print("backup gagal $e");
+          result = {"STATUS":0,"MSG":"Backup gagal!"};
+        }
+      },customMessage: " untuk menyimpan data backup");
+    }
+    else{
+      result = {"STATUS":0,"MSG":"Backup gagal data unit tidak ditemukan!"};
+    }
+
+    return result;
+  }
+  restoreDb(context)async{
+    var result = {"STATUS":0,"MSG":"File Backup tidak ditemukan!"};
+    if(prefs.getString(keyClass.backup_stock_id)!=null){
+      await util.permissionCheck(context,pHandler.Permission.storage,()async{
+        Directory documentsDirectory = await getExternalStorageDirectory();
+        String backupPath = join(documentsDirectory.path.substring(0,documentsDirectory.path.indexOf("/Android"))+"/Download", "${prefs.getString(keyClass.backup_stock_id)}_assets.db");
+        File backupdbFile = File(backupPath);
+        if(backupdbFile.existsSync()){
+          File dbFile = new File(join(documentsDirectory.path, "assets.db"));
+          Uint8List byte = backupdbFile.readAsBytesSync();
+          dbFile.writeAsBytesSync(byte);
+          result =  {"STATUS":1,"MSG":"File Back up successfull"};
+          await DBHelper.database.closeDb();
+        }
+        else result =  {"STATUS":0,"MSG":"File Backup tidak ditemukan!"};
+      },customMessage: " untuk menyimpan data backup");
+    }
+    return result;
+  }
+
   initDb() async {
-    Directory documentsDirectory = await getApplicationDocumentsDirectory();
+    Directory documentsDirectory = await getExternalStorageDirectory();
     String path = join(documentsDirectory.path, "assets.db");
     var theDb = await openDatabase(path, version: 1,onCreate: _onCreate);
     return theDb;
@@ -34,7 +102,7 @@ class DBHelper{
   }
 
   void _onCreate(Database db, int version) async {
-    Directory documentsDirectory = await getApplicationDocumentsDirectory();
+    Directory documentsDirectory = await getExternalStorageDirectory();
     String path = join(documentsDirectory.path, "assets.db");
     File file = File(path);
     print('Database created, ${file.lengthSync()}');

lib/util/download_Upload_Handler.dart

@@ -49,7 +49,7 @@ class file_Trans_Handler {
           _progress.add(0.0);
           print('Finish Download');
           final file = File(
-              "${(await getApplicationDocumentsDirectory()).path}/$fileName");
+              "${(await getExternalStorageDirectory()).path}/$fileName");
           await file.writeAsBytes(_bytes);
           _path = file.path;
         })
@@ -72,7 +72,7 @@ class file_Trans_Handler {
     List<int> _bytes = [];
     _finish = false;
     final file = File(
-        "${(await getApplicationDocumentsDirectory()).path}/$fileName");
+        "${(await getExternalStorageDirectory()).path}/$fileName");
       _total = file.lengthSync();
       print(_total/1024);
       try{

lib/util/prefsKey.dart

@@ -2,6 +2,7 @@ class keyClass{
   static String hostAddress = "HOST_ADDRESS";
   static String dbName = "dbName";
   static String user ="user";
+  static String backup_stock_id ='backupDB';
 }
 
 class tableName{

lib/util/utils.dart

@@ -2,11 +2,41 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:http/http.dart' as http;
 import 'package:barcode_scan2/barcode_scan2.dart';
 import 'package:fluttertoast/fluttertoast.dart';
+import 'package:permission_handler/permission_handler.dart' as pHandler;
+
 
 class Util{
+
+  permissionCheck(context,pHandler.Permission permissionType,ifGranted,{customMessage=''})async{
+    pHandler.PermissionStatus permission = await permissionType.status;
+    if(permission!= pHandler.PermissionStatus.granted){
+      if(permission== pHandler.PermissionStatus.denied || permission== pHandler.PermissionStatus.restricted){
+        showToast('NORMAL', '${permissionType.toString().substring(permissionType.toString().lastIndexOf('.')+1)} permission is needed$customMessage. Please grant the permission!');
+        await Future.delayed(Duration(seconds: 3));
+        permission = await permissionType.request();
+      }
+      if(permission== pHandler.PermissionStatus.permanentlyDenied) {
+        showToast('ERROR', 'It seems, your system security explicitly denied access to your ${permissionType.toString().substring(permissionType.toString().lastIndexOf('.')+1)} permission. Please MANUALLY enable it in setings!');
+        await Future.delayed(Duration(seconds: 3));
+        pHandler.openAppSettings();
+        SystemChannels.platform.invokeMethod('SystemNavigator.pop');
+      }
+      if(permission== pHandler.PermissionStatus.denied || permission== pHandler.PermissionStatus.restricted){
+        showToast('NORMAL', '${permissionType.toString().substring(permissionType.toString().lastIndexOf('.')+1)} permission is needed$customMessage. Please grant the permission!');
+        await Future.delayed(Duration(seconds: 3));
+        permission = await permissionType.request();
+      }
+      await permissionCheck(context,permissionType,ifGranted);
+    }
+    else{
+      await ifGranted();
+    }
+  }
+
   scan()async{
     String BarcodeText ='';
     try{

pubspec.lock

@@ -303,6 +303,41 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
+  permission_handler:
+    dependency: "direct main"
+    description:
+      name: permission_handler
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "9.2.0"
+  permission_handler_android:
+    dependency: transitive
+    description:
+      name: permission_handler_android
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "9.0.2+1"
+  permission_handler_apple:
+    dependency: transitive
+    description:
+      name: permission_handler_apple
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "9.0.4"
+  permission_handler_platform_interface:
+    dependency: transitive
+    description:
+      name: permission_handler_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.7.0"
+  permission_handler_windows:
+    dependency: transitive
+    description:
+      name: permission_handler_windows
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.0"
   petitparser:
     dependency: transitive
     description:

pubspec.yaml

@@ -33,6 +33,7 @@ dependencies:
 # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.5
+  permission_handler: ^9.2.0
 
 dev_dependencies:
   flutter_launcher_icons: