fix schedule dashboard project

app/Http/Controllers/ProjectController.php

@@ -448,13 +448,27 @@ class ProjectController extends Controller
         // dd($result->header->start_date);
         $ganttId = $gantt['last_gantt_id'];
 
-        $startDate = Activity::where('version_gantt_id', $ganttId)
+		$actualStartExist = Activity::where('version_gantt_id', $ganttId)->whereNotNull('actual_start')->exists();
-            ->orderBy('start_date')
+		$actualEndExist = Activity::where('version_gantt_id', $ganttId)->whereNotNull('actual_end')->exists();
-            ->value('start_date');
 
-        $endDate = Activity::where('version_gantt_id', $ganttId)
+		if ($actualStartExist) {
-            ->orderByDesc('end_date')
+			$startDate = Activity::where('version_gantt_id', $ganttId)
-            ->value('end_date');
+				->orderBy('actual_start')
+				->value('start_date');
+		} else {
+			$startDate = Activity::where('version_gantt_id', $ganttId)
+				->orderBy('start_date')
+				->value('start_date');
+		}
+		if ($actualEndExist) {
+			$endDate = Activity::where('version_gantt_id', $ganttId)
+				->orderByDesc('actual_end')
+				->value('end_date');
+		} else {
+			$endDate = Activity::where('version_gantt_id', $ganttId)
+				->orderByDesc('end_date')
+				->value('end_date');
+		}
         $result->header->start_date = $startDate;
         $result->header->end_date = $endDate;
 		return response()->json(['status'=>'success','code'=> 200,'data'=>$result, 'gantt'=>$gantt], 200);