import 'package:flutter/material.dart';
import 'package:ftc_mobile_app/utilities/app_session_manager.dart';
import 'package:ftc_mobile_app/utilities/extensions/custom_extensions.dart';
import 'package:get/get.dart';
import 'package:ftc_mobile_app/ftc_mobile_app.dart';

class SplashScreenController extends GetxController {
  final GlobalKey<ScaffoldState> screenKey = GlobalKey<ScaffoldState>();

  @override
  void onInit() {
    5.seconds.delay(() {
      _gotoLoginScreen();

      // if (_loginTokenNotFound) {
      //   _gotoLoginScreen();
      // } else {
      //   _checkOngoingShift();
      // }

    });
    super.onInit();
  }

  //true if login token found in local storage
  bool get _loginTokenNotFound {
    return LocalStorageManager.getLoginToken().isEmpty;
  }

  DateTime _getDateTimeObjFor({required int hour, required int minute}) {
    return DateTime(DateTime.now().year, DateTime.now().month,
        DateTime.now().day, hour, minute);
  }

  //Todo: If Shift present then logout half an hour before start time
  // Else logout 7am uk time
  _checkOngoingShift() {
    final shift = LocalStorageManager.getOngoingShift();

    //if shift present
    if (shift != null) {
      ///boolean value [isShiftExpired] to check
      ///if there is an expired shift in local storage.
      final isShiftExpired = shift.endTime!.isBefore(TimeOfDay.now());
      if (isShiftExpired) {
        LocalStorageManager.removeOngoingShift();
      } else {
        final shiftNotStartedYet = shift.startTime!.isAfter(TimeOfDay.now());

        if (shiftNotStartedYet) {
          ///checking if shift is going to start in 30 minutes or less
          if ((shift.startTime!.minute - TimeOfDay.now().minute) <= 30) {
            _gotoLoginScreen();
            return;
          }

          ///checking if shift is going to start in 60 minutes or less, then
          ///start session timer which will alert session expire to user
          ///if 30minutes left in shift start and logout the user.
          if ((shift.startTime!.minute - TimeOfDay.now().minute) <= 60) {
            //starting session timer

            final sessionExpireDateTime = _getDateTimeObjFor(
              hour: shift.startTime!.hour,
              minute: shift.startTime!.minute,
            ).subtract(30.minutes);

            final millisLeft = sessionExpireDateTime.millisecondsSinceEpoch -
                DateTime.now().millisecondsSinceEpoch;

            AppSessionManager.instance.startSessionTimer(millisLeft);
          }
        }
      }
    } else {
      final currentTime = TimeOfDay.now();
      const time7am = TimeOfDay(hour: 7, minute: 0);

      ///checking if current time is before [7:00 AM]
      if (currentTime.isBefore(time7am)) {
        ///checking if remaining 30 minutes or less time
        if ((time7am.minute - currentTime.minute) <= 30) {
          //starting session timer
          final dateTime7am =
              _getDateTimeObjFor(hour: time7am.hour, minute: time7am.minute);

          final millisLeft = dateTime7am.millisecondsSinceEpoch -
              DateTime.now().millisecondsSinceEpoch;

          AppSessionManager.instance.startSessionTimer(millisLeft);
        }
      }
    }

    _gotoDashboardScreen();
  }

  _gotoLoginScreen() {
    Navigator.pushNamedAndRemoveUntil(
      screenKey.currentContext!,
      CustomRouteNames.kLoginScreenRoute,
      (route) => false,
    );
  }

  _gotoDashboardScreen() {
    Navigator.pushNamedAndRemoveUntil(
      screenKey.currentContext!,
      CustomRouteNames.kDashboardScreenRoute,
      (route) => false,
    );
  }

  @override
  void dispose() {
    Get.delete<SplashScreenController>();
    super.dispose();
  }
}