tinggal test kalau sudah ado yang open lg

lib/Util/DBHelper.dart

@@ -15,10 +15,15 @@ class DBHelper {
 
   Future<Database> get db async {
     if (_db == null) _db = await initDb();
-    //backupDatabase
-    String backupPath = join(_db.path.substring(0,_db.path.indexOf("/Android"))+"/Download/UnitDBBackup/", "UnitStocking.db");
-    io.File dbFile = io.File(_db.path);
-    dbFile.copySync(backupPath);
+    try{
+      //backupDatabase
+      String backupPath = join(_db.path.substring(0,_db.path.indexOf("/Android"))+"/Download/UnitDBBackup/", "${prefs.getString(keyClass.stock_id)}_UnitStocking.db");
+      io.File dbFile = io.File(_db.path);
+      dbFile.copySync(backupPath);
+    }
+    catch(e){
+      print(e);
+    }
     return _db;
   }
 
@@ -30,7 +35,16 @@ class DBHelper {
   }
 
   restoreDb()async{
-    // do something here
+    await closeDb();
+    io.Directory documentsDirectory = await getExternalStorageDirectory();
+    String backupPath = join(documentsDirectory.path.substring(0,documentsDirectory.path.indexOf("/Android"))+"/Download/UnitDBBackup/", "${prefs.getString(keyClass.stock_id)}_UnitStocking.db");
+    io.File backupdbFile = io.File(backupPath);
+    if(backupdbFile.existsSync()){
+      String path = join(documentsDirectory.path, "UnitStocking.db");
+      backupdbFile.copySync(path);
+      return {"STATUS":1,"MSG":"File Back up successfull"};
+    }
+    return {"STATUS":0,"MSG":"File Backup tidak ditemukan!"};
   }
 
   closeDb() async {

lib/Util/Prefs.dart

@@ -14,6 +14,7 @@ class keyClass{
   static String stock_id = 'STOCK_TAKING_UNIT_ID';
   static String client_credential = 'CLIENT_CREDENTIAL';
   static String rest_data = 'REST_DATA';
+  static String tgl_start = 'TGL_START';
 }
 class columnName{
   static String id = 'ID';

lib/home_page.dart

@@ -522,6 +522,16 @@ class _HomePageState extends State<HomePage> {
                             ),
                           ),
                           PopupMenuItem(
+                            value:'restore',
+                            child: Row(
+                              children: <Widget>[
+                                Icon(Icons.sync,color: Colors.black,),
+                                SizedBox(width: 10,),
+                                Text('Restore Backup')
+                              ],
+                            ),
+                          ),
+                          PopupMenuItem(
                             value:'logout',
                             child: Row(
                               children: <Widget>[
@@ -660,6 +670,41 @@ class _HomePageState extends State<HomePage> {
                           prefs.setBool(keyClass.logged_in, false);
                           Navigator.pushNamed(context, '/login');
                         }
+                        if(value == 'restore'){
+                          await showDialog(context: context,builder: (context)=>AlertDialog(
+                            title: Text('Restore Data ?'),
+                            content: Text('Restore data akan menghapus dan mengganti data unit yang ada dengan data unit backup.'),
+                            actions: <Widget>[
+                              TextButton(
+                                child: Text('Proceed'),
+                                onPressed: ()async{
+                                  util.showLoading(context);
+                                  var result = await DBHelper.database.restoreDb();
+                                  if(result["MSG"]==1){
+                                    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, value.value);
+                                  }
+                                  util.showFlushbar(context, result["MSG"]);
+                                  Navigator.pop(context);
+                                  Navigator.pop(context);
+                                },
+                              ),
+                              TextButton(
+                                child: Text('Cancel'),
+                                onPressed: ()=>Navigator.pop(context),
+                              )
+                            ],
+                          ));
+                        }
                       },
                     ),
                   ],