@section('title', 'Ujian Kecemasan')
{{-- @section('body_status_overflow', 'overflow: hidden;') --}}
@section('main_style', 'min-height: 100vh;')
@extends('user.layouts.test_layout.index')
@section('content')
  <div class="container-fluid p-0 d-flex flex-column" style="min-height: 100vh">
    <nav class="navbar navbar-expand-lg bg-body-tertiary px-2">
      <div class="container-fluid">
        <a class="navbar-brand" href="#">Smart Anxiety</a>
        <div class="collapse navbar-collapse justify-content-between" id="navbarSupportedContent">
          <ul class="navbar-nav me-auto mb-2 mb-lg-0"></ul>
          <div class="d-flex col-md-4">
            <div class="col-md-4 d-flex justify-content-center align-items-center">
              Time Left: <span id="time_left"></span>
            </div>
            <div class="col-md-4 d-flex justify-content-center align-items-center">
              <span id="bg_status_tobii" class="rounded bg-warning d-block mx-2" style="width: 10px; aspect-ratio: 1/1;"></span>Status Tobii
            </div>
            <div class="col-md-4 d-flex justify-content-center align-items-center">
              <button id="fullscreen_btn" data-status="fullscreen" class="btn btn-sm btn-outline-secondary" onclick="openFullscreen()">Fullscreen</button>
            </div>
          </div>
        </div>
      </div>
    </nav>

    <div class="d-flex flex-grow-1 container-fluid">
      <div class="row flex-grow-1">
        <div class="col-md-9 border-end">
          <div class="row justify-content-center flex-column p-4">
            <div class="col-md-12 border-bottom fs-4 fw-bold p-2">Soal</div>
            <div class="col-md-12 p-2" id="text_question" style="text-align: justify"></div>
            <div class="col-md-12" id="answer_field">
              <div class="fs-4 fw-bold p-2">Jawaban:</div>
                {{-- <div class="form-check m-2">
                  <input class="form-check-input" type="radio" name="jawaban_final" id="jawaban_{{ $item['key'] }}">
                  <label class="form-check-label" for="jawaban_{{ $item['key'] }}">{{ $item['value'] }}</label>
                </div> --}}
            </div>
          </div>
        </div>
        <div class="col-md-3">
          <div class="row p-3">
            <div class="col-md-12 border-bottom fs-4 fw-bold p-2 mb-3" id="navigation_field">Navigasi Soal</div>
            {{-- @foreach ($answered_question as $question)
              <div onclick="changeQuestion({{ $question['nomor_soal'] }})" id="nomor_{{ $question['nomor_soal'] }}" class="col-md-1 btn d-flex justify-content-center align-items-center {{ $question['answered'] ? 'bg-secondary-subtle' : 'bg-light-subtle' }} border rounded p-0 m-1" style="aspect-ratio: 1/1.5;">{{ $question['nomor_soal'] }}</div>
            @endforeach

            <div class="col-md-12 p-0 mt-3">
              @if ($question_number > 1)
                <div class="btn btn-secondary" onclick="changeQuestion({{ $question_number - 1 }})">Previous</div>
              @endif

              @if ($is_last_question)
                <div class="btn btn-success" onclick="finishExam()">Finish</div>
              @else
                <div class="btn btn-primary" onclick="changeQuestion({{ $question_number + 1 }})">Next</div>
              @endif
            </div> --}}
          </div>
          <div class="row p-3">
            <div class="col-md-12">
              <div class="card">
                <div class="card-body">
                  <h5 class="card-title">Instruksi</h5>
                  <p class="card-text">Silahkan baca soal dengan teliti dan pilih jawaban yang paling tepat.</p>
                  <div class="card-text d-flex align-items-center">
                    <span class="col-md-1 bg-light-subtle border rounded p-0 m-1" style="aspect-ratio: 1/1.5;"></span>
                    <span>adalah tanda bahwa jawaban BELUM diisi.</span>
                  </div>
                  <div class="card-text d-flex align-items-center">
                    <span class="col-md-1 bg-secondary-subtle border rounded p-0 m-1" style="aspect-ratio: 1/1.5;"></span>
                    <span>adalah tanda bahwa jawaban SUDAH diisi.</span>
                  </div>
                  <div class="card-text d-flex align-items-center">
                    <span class="col-md-1 bg-info border rounded p-0 m-1 text-white" style="aspect-ratio: 1/1.5;"></span>
                    <span>adalah tanda bahwa anda sedang membaca/menjawab soal ini.</span>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>
@endsection

@section('script')
  <script>
    const ws = new WebSocket('{{ env("WEBSOCKET_URL") }}');
    const SESSION_ID = '{{ $data_session->id_test_sessions }}';
    const TOKEN_SESSION = '{{ $data_session->token_session }}';
    let UNIX_END_TIME = null;
    let QUESTION_INDEX = 1;

    function fetchQuestion(question_index) {
      let xhttp = new XMLHttpRequest();

      xhttp.onreadystatechange = function() {
        if(this.readyState == 4 && this.status == 200) {
          let response = JSON.parse(this.responseText);
          if(response.status) {
            $('#text_question').html(response.data.pertanyaan);
            getCurrentAnswer(response.data.id_soal);
          } else {
            Swal.fire({
              title: 'Error',
              icon: 'error',
              text: 'Terjadi kesalahan saat mengambil soal. Silahkan refresh halaman ini.',
              confirmButtonText: 'OK'
            });
          }
        }
      }

      xhttp.open("GET", "{{ route('ujian.fetchQuestion') }}?session_id=" + SESSION_ID + "&question_index=" + question_index, false);
      xhttp.send();
    }

    function getCurrentAnswer(id_question) {
      let xhttp = new XMLHttpRequest();

      xhttp.onreadystatechange = function() {
        if (this.readyState == 4 && this.status == 200) {
          let response = JSON.parse(this.responseText);
          if (response.status) {
            let choices_html = '';
            $('#answer_field').html('<div class="fs-4 fw-bold p-2">Jawaban:</div>');
            response.choices.forEach((choice) => {
              choices_html += `
                <div class="form-check m-2">
                  <input class="form-check-input" type="radio" name="jawaban_final" id="jawaban_${choice.key}">
                  <label class="form-check-label" for="jawaban_${choice.key}">${choice.value}</label>
                </div>
              `;
            });
            $('#answer_field').append(choices_html);
          }
        }
      };
      xhttp.open("GET", "{{ route('ujian.getCurrentAnswer') }}?session_id=" + SESSION_ID + "&id_question=" + id_question, false);
      xhttp.send();
    }

    function getTimeLeft() {
      let xhttp = new XMLHttpRequest();

      xhttp.onreadystatechange = function() {
        if (this.readyState == 4 && this.status == 200) {
          let response = JSON.parse(this.responseText);
          console.log('Time left:', response.time_left);
          UNIX_END_TIME = response.time_left;
        }
      };
      xhttp.open("GET", "{{ route('ujian.getTimeLeft') }}?session_id=" + SESSION_ID, false);
      xhttp.send();
    }

    function updateTimeLeft() {
      let time_left = UNIX_END_TIME - Math.floor(Date.now() / 1000);
      if(time_left < 0) {
        time_left = 0;
        finishExam();
      }
      let minutes = Math.floor(time_left / 60);
      let seconds = time_left % 60;
      document.getElementById('time_left').innerText = ' ' + minutes + ':' + (seconds < 10 ? '0' : '') + seconds;
    }

    function startTobii() {
      ws.send(JSON.stringify({
        type: "command",
        action: "start",
        session_id: SESSION_ID
      }));
    }

    function stopTobii() {
      ws.send(JSON.stringify({
        type: "command",
        action: "stop",
        session_id: SESSION_ID
      }));
    }

    function openFullscreen() {
      const status = $('#fullscreen_btn').attr('data-status');
      const elem = document.documentElement;
      if (status === 'fullscreen') {
        if (elem.requestFullscreen) {
          elem.requestFullscreen();
        } else if (elem.webkitRequestFullscreen) {
          elem.webkitRequestFullscreen(); // Safari
        } else if (elem.msRequestFullscreen) {
          elem.msRequestFullscreen(); // IE
        }
        $('#fullscreen_btn').attr('data-status', 'exit-fullscreen');
        $('#fullscreen_btn').text('Exit Fullscreen');
        startTobii();
      } else if (status === 'exit-fullscreen') {
        if (document.exitFullscreen) {
          document.exitFullscreen();
        } else if (document.webkitExitFullscreen) {
          document.webkitExitFullscreen(); // Safari
        } else if (document.msExitFullscreen) {
          document.msExitFullscreen(); // IE
        }
        $('#fullscreen_btn').attr('data-status', 'fullscreen');
        $('#fullscreen_btn').text('Enter Fullscreen');
      }
    }

    function checkFullscreen() {
      if (!document.fullscreenElement) {
        ws.send(JSON.stringify({
          type: "command",
          action: "stop",
          session_id: SESSION_ID
        }));

        Swal.fire({
          title: 'Alert',
          icon: 'warning',
          text: 'Anda keluar dari mode fullscreen, harap masuk ke mode fullscreen untuk melanjutkan ujian.',
          confirmButtonText: 'Ya',
          showCancelButton: false,
          showCloseButton: false,
          allowOutsideClick: false,
          allowEscapeKey: false,
          backdrop: `rgba(0, 0, 0, 0.4)`
        }).then((result) => {
          if (result.isConfirmed) {
            openFullscreen();
          }
        });
      }
    }

    $(document).ready(function() {
      ws.onopen = () => {
        console.log("Connected to WebSocket");
        ws.send(JSON.stringify({
          type: "register",
          session_id: SESSION_ID,
          token_session: TOKEN_SESSION,
          role: "web"
        }));

        document.addEventListener('fullscreenchange', checkFullscreen);
        // checkFullscreen();

        ws.send(JSON.stringify({
          type: "update_status",
          status_sessions: true,
          session_id: SESSION_ID
        }));

        ws.onmessage = (event) => {
          const data = JSON.parse(event.data);

          if(data.type === 'reset_start_tobii') {
            startTobii();
          }

          if(data.type === 'status_tobii_device') {
            if(data.status) {
              console.log('Tobii device is connected');
              // document.getElementById('status_tobii_device').innerText = 'Connected';
              document.getElementById('bg_status_tobii').classList.remove('bg-warning');
              document.getElementById('bg_status_tobii').classList.remove('bg-danger');
              document.getElementById('bg_status_tobii').classList.add('bg-success');
            } else {
              console.log('Tobii device is not connected');
              // document.getElementById('status_tobii_device').innerText = 'Not Connected';
              document.getElementById('bg_status_tobii').classList.remove('bg-success');
              document.getElementById('bg_status_tobii').classList.remove('bg-warning');
              document.getElementById('bg_status_tobii').classList.add('bg-danger');
            }
          }
        };

        startTobii();
        // getCurrentAnswer();
        getTimeLeft();
        setInterval(updateTimeLeft, 1000);
        fetchQuestion(QUESTION_INDEX);
      };
    });
  </script>
@endsection