solving problems of validations and adding query of application

backend/dataconnect/connector/application/queries.gql

@@ -543,6 +543,36 @@ query listAcceptedApplicationsByShiftRoleKey(
   }
 }
 
+query listOverlappingAcceptedApplicationsByStaff(
+  $staffId: UUID!
+  $newStart: Timestamp!
+  $newEnd: Timestamp!
+  $offset: Int
+  $limit: Int
+) @auth(level: USER) {
+  applications(
+    where: {
+      staffId: { eq: $staffId }
+      status: { in: [ CONFIRMED, CHECKED_IN, CHECKED_OUT, LATE ] }
+      shiftRole: {
+        startTime: { lt: $newEnd }
+        endTime: { gt: $newStart }
+      }
+    }
+    offset: $offset
+    limit: $limit
+    orderBy: { appliedAt: ASC }
+  ) {
+    id
+    shiftId
+    roleId
+    checkInTime
+    checkOutTime
+    staff { id fullName email phone photoUrl }
+    shiftRole { startTime endTime }
+  }
+}
+
 #getting staffs of an shiftrole status for orders of the day view client 
 query listAcceptedApplicationsByBusinessForDay(
   $businessId: UUID!