{{-- 
    Lokasi File: resources/views/guru/ujian/monitoring.blade.php (Sesuaikan dengan nama file Anda)
    Deskripsi: Halaman Live Monitoring Ujian CBT (Mobile-Optimized & Auto-Sync)
--}}

@extends('layouts.guru_master')

@section('title', 'Live Monitor Ujian | Smart Cendekia')

@section('css')
<meta name="csrf-token" content="{{ csrf_token() }}"> 
<style>
    :root {
        --app-bg: #f4f7fb;
        --primary: #4f46e5;
        --text-main: #0f172a;
        --font-mono: 'JetBrains Mono', monospace;
        --c-online: #10b981; 
        --c-offline: #ef4444; 
        --c-done: #3b82f6;    
        --c-wait: #9ca3af;    
    }

    body { font-family: 'Plus Jakarta Sans', sans-serif !important; background-color: var(--app-bg); }

    /* === HERO GRADIENT CARD === */
    .hero-gradient {
        background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
        border-radius: 28px; padding: 25px 20px; color: white;
        position: relative; overflow: hidden;
        box-shadow: 0 15px 30px -10px rgba(59, 130, 246, 0.4);
        margin-bottom: 20px;
    }
    .hero-gradient::after {
        content: ''; position: absolute; width: 150px; height: 150px;
        background: rgba(255,255,255,0.1); border-radius: 50%;
        top: -40px; right: -20px;
    }

    /* === TOKEN TICKET === */
    .token-ticket {
        background: rgba(255,255,255,0.15); border: 1px dashed rgba(255,255,255,0.5);
        padding: 8px 15px; border-radius: 16px; text-align: center; cursor: pointer;
        backdrop-filter: blur(5px); display: inline-block; transition: 0.2s; user-select: none;
    }
    .token-ticket:active { transform: scale(0.95); }
    .token-code { font-family: var(--font-mono); font-size: 1.4rem; font-weight: 800; letter-spacing: 3px; margin-top: -2px; }
    .token-label { font-size: 0.65rem; text-transform: uppercase; font-weight: 800; opacity: 0.8; letter-spacing: 0.5px; }

    /* === STAT BOXES (GRID) === */
    .stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 25px; }
    @media (min-width: 768px) { .stat-grid { grid-template-columns: repeat(4, 1fr); gap: 15px; } }
    .stat-box { background: white; border-radius: 20px; padding: 15px; border: 1px solid #f1f5f9; box-shadow: 0 8px 15px rgba(0,0,0,0.02); display: flex; align-items: center; }
    .stat-icon { width: 42px; height: 42px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; margin-right: 12px; flex-shrink: 0; }
    .stat-val { font-size: 1.3rem; font-weight: 900; line-height: 1; color: var(--text-main); margin-bottom: 2px; }
    .stat-label { font-size: 0.7rem; color: #64748b; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }

    /* === CONTROL BAR === */
    .control-bar { background: white; border-radius: 20px; padding: 12px 20px; margin-bottom: 20px; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 8px 15px rgba(0,0,0,0.02); border: 1px solid #f1f5f9; }
    .custom-switch .custom-control-label::before { height: 1.25rem; width: 2.25rem; border-radius: 2rem; }
    .custom-switch .custom-control-label::after { width: calc(1.25rem - 4px); height: calc(1.25rem - 4px); border-radius: 50%; }
    .custom-switch .custom-control-input:checked ~ .custom-control-label::after { transform: translateX(1rem); }

    /* === STUDENT CARDS === */
    .student-card { background: white; border-radius: 20px; padding: 15px 10px; position: relative; transition: all 0.3s ease; box-shadow: 0 5px 15px rgba(0,0,0,0.03); border: 2px solid transparent; height: 100%; display: flex; flex-direction: column; align-items: center; text-align: center; }
    
    .card-online { border-color: rgba(16, 185, 129, 0.3); background: #f0fdf4; }
    .card-offline { border-color: rgba(239, 68, 68, 0.3); background: #fef2f2; }
    .card-done { border-color: rgba(59, 130, 246, 0.3); background: #eff6ff; }
    .card-wait { border-color: #f1f5f9; background: #f8fafc; }

    .avatar-wrapper { position: relative; width: 60px; height: 60px; margin: 0 auto 10px; }
    .avatar-img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; border: 3px solid white; box-shadow: 0 4px 10px rgba(0,0,0,0.1); background: white; }
    
    .status-indicator { position: absolute; bottom: 0; right: 0; width: 16px; height: 16px; border-radius: 50%; border: 3px solid white; }
    .bg-online { background-color: var(--c-online); }
    .bg-offline { background-color: var(--c-offline); }
    .bg-done { background-color: var(--c-done); }
    
    .pulse-ring { position: absolute; top: -2px; left: -2px; bottom: -2px; right: -2px; border-radius: 50%; border: 2px solid var(--c-online); animation: pulse-animation 2s infinite; opacity: 0; }
    @keyframes pulse-animation { 0% { transform: scale(1); opacity: 1; } 100% { transform: scale(1.4); opacity: 0; } }

    .student-name { font-weight: 800; color: var(--text-main); font-size: 0.85rem; width: 100%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; line-height: 1.2; margin-bottom: 2px; }
    .student-nis { font-size: 0.65rem; color: #64748b; font-weight: 600; font-family: var(--font-mono); }
    .timer-badge { font-family: var(--font-mono); background: white; padding: 4px 8px; border-radius: 8px; font-size: 0.75rem; font-weight: 800; color: #334155; display: inline-block; margin-top: 8px; box-shadow: 0 2px 5px rgba(0,0,0,0.02); border: 1px solid #e2e8f0; }
    
    .btn-action-overlay { margin-top: auto; width: 100%; border-radius: 10px; font-size: 0.7rem; font-weight: 700; padding: 6px; margin-top: 12px; }

    /* Modal Aksi */
    .modal-content-rounded { border-radius: 28px; border: none; overflow: hidden; }
</style>
@stop

@section('content_body')
<div class="container-fluid pb-5 px-3 animate__animated animate__fadeIn">

   {{-- NAVIGASI KEMBALI --}}
    <div class="mb-3 mt-4">
        {{-- Menggunakan URL absolut sesuai dengan struktur web Anda --}}
        <a href="{{ url('guru/ujian/jadwal') }}" class="btn btn-white border rounded-pill shadow-sm px-3 py-2 font-weight-bold text-secondary" style="font-size: 0.85rem;">
            <i class="fas fa-arrow-left mr-1"></i> Kembali
        </a>
    </div>

    {{-- HERO HEADER --}}
    <div class="hero-gradient animate__animated animate__fadeInDown">
        <div style="position: relative; z-index: 2;" class="d-flex flex-column flex-md-row justify-content-between align-items-md-center gap-3">
            <div>
                <span class="badge bg-white px-3 py-1 rounded-pill font-weight-bold text-primary shadow-sm mb-2" style="font-size: 0.7rem;">
                    <i class="fas fa-satellite-dish mr-1 blink"></i> Live Monitoring
                </span>
                <h3 class="font-weight-bold mb-1" style="font-size: 1.3rem; line-height: 1.3;">{{ $ujian->nama_ujian ?? 'Sesi Ujian CBT' }}</h3>
                <div class="font-weight-bold" style="opacity: 0.9; font-size: 0.8rem;">
                    <i class="fas fa-book mr-1"></i> {{ $ujian->bankSoal->mataPelajaran->nama_mapel ?? 'Mapel Umum' }}
                    <span class="mx-1">|</span>
                    <i class="fas fa-users mr-1"></i> {{ isset($ujian->kelas) && count($ujian->kelas) > 0 ? $ujian->kelas->pluck('nama_kelas')->join(', ') : 'Semua Kelas' }}
                </div>
            </div>
            
            {{-- TOKEN --}}
            <div class="token-ticket mt-2 mt-md-0 shadow-sm" onclick="copyToken('{{ $ujian->token ?? 'NONE' }}')" title="Tap untuk menyalin">
                <div class="token-label">Token Akses</div>
                <div class="token-code">{{ $ujian->token ?? 'NONE' }}</div>
            </div>
        </div>
    </div>

    {{-- STATS GRID --}}
    <div class="stat-grid animate__animated animate__fadeInUp" style="animation-delay: 0.1s;">
        <div class="stat-box">
            <div class="stat-icon" style="background: #f1f5f9; color: #475569;"><i class="fas fa-users"></i></div>
            <div>
                <div class="stat-val" id="count-total">0</div>
                <div class="stat-label">Total Peserta</div>
            </div>
        </div>
        <div class="stat-box">
            <div class="stat-icon" style="background: #d1fae5; color: #059669;"><i class="fas fa-laptop-code"></i></div>
            <div>
                <div class="stat-val" id="count-online">0</div>
                <div class="stat-label">Mengerjakan</div>
            </div>
        </div>
        <div class="stat-box">
            <div class="stat-icon" style="background: #dbeafe; color: #2563eb;"><i class="fas fa-check-double"></i></div>
            <div>
                <div class="stat-val" id="count-selesai">0</div>
                <div class="stat-label">Selesai</div>
            </div>
        </div>
        <div class="stat-box">
            <div class="stat-icon" style="background: #fee2e2; color: #dc2626;"><i class="fas fa-wifi"></i></div>
            <div>
                <div class="stat-val text-danger" id="count-offline">0</div>
                <div class="stat-label">Keluar / Error</div>
            </div>
        </div>
    </div>

    {{-- CONTROL BAR --}}
    <div class="control-bar animate__animated animate__fadeInUp" style="animation-delay: 0.2s;">
        <h6 class="font-weight-bold text-dark mb-0"><i class="fas fa-user-clock text-primary mr-2"></i> Status Siswa</h6>
        <div class="d-flex align-items-center">
            {{-- TOGGLE KAMERA (Muncul di Mobile & Desktop) --}}
            <div class="custom-control custom-switch mr-3">
                <input type="checkbox" class="custom-control-input" id="toggleKamera" onchange="gantiModeTampilan()">
                <label class="custom-control-label font-weight-bold text-primary" style="cursor:pointer; font-size: 0.85rem;" for="toggleKamera">
                    <i class="fas fa-camera mr-1"></i> <span class="d-none d-sm-inline">Kamera</span>
                </label>
            </div>
            <button class="btn btn-sm btn-light border rounded-pill px-3 shadow-sm font-weight-bold text-muted" onclick="refreshData(true)">
                <i class="fas fa-sync-alt mr-1"></i> <span class="d-none d-sm-inline">Refresh</span>
            </button>
        </div>
    </div>

    {{-- STUDENT GRID CONTAINER --}}
    <div class="row" id="siswa-grid">
        <div class="col-12 text-center py-5">
            <div class="spinner-border text-primary" role="status"></div>
            <p class="mt-3 text-muted small font-weight-bold">Menyinkronkan data dengan Server CBT...</p>
        </div>
    </div>
</div>

{{-- MODAL FORCE FINISH --}}
<div class="modal fade" id="modalAksi" tabindex="-1" role="dialog" aria-hidden="true">
    <div class="modal-dialog modal-dialog-centered modal-sm" role="document">
        <div class="modal-content modal-content-rounded shadow-lg">
            <div class="modal-body p-4 text-center">
                <div style="width: 70px; height: 70px; background: #fef2f2; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; margin-bottom: 15px; color: #ef4444;">
                    <i class="fas fa-exclamation-triangle fa-2x"></i>
                </div>
                <h5 class="font-weight-bold text-dark mb-1">Force Finish</h5>
                <p class="text-muted small mb-4">Hentikan paksa ujian untuk <strong id="modal-nama-siswa" class="text-dark"></strong>? Siswa tidak akan bisa login kembali.</p>
                <input type="hidden" id="selected-ujian-siswa-id">
                
                <button class="btn btn-danger btn-block shadow-sm rounded-pill mb-2 py-2 font-weight-bold" onclick="forceFinish()">Hentikan Ujian</button>
                <button class="btn btn-light border btn-block rounded-pill text-muted py-2 font-weight-bold" data-dismiss="modal">Batal</button>
            </div>
        </div>
    </div>
</div>
@stop

@section('js')
<script src="https://cdn.jsdelivr.net/npm/sweetalert2@11"></script>
<script>
    // Konfigurasi Global CSRF
    $.ajaxSetup({
        headers: { 'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content') }
    });

    const monitoringUrl = "{{ route('guru.ujian.monitoring-data', $ujian->id ?? 0) }}";
    const forceFinishUrl = "{{ route('guru.ujian.force-finish') }}"; // Pastikan route ini ada
    
    let studentTimers = {}; 
    let ajaxRequest = null;
    let modeKamera = false;

    function gantiModeTampilan() {
        modeKamera = $('#toggleKamera').is(':checked');
        refreshData(); 
    }

    function copyToken(text) {
        navigator.clipboard.writeText(text).then(() => {
            Swal.fire({ toast: true, position: 'top-end', icon: 'success', title: 'Token berhasil disalin', showConfirmButton: false, timer: 2000, customClass: { popup: 'rounded-12' } });
        });
    }

    function formatTime(seconds) {
        if (seconds <= 0) return "00:00:00";
        let h = Math.floor(seconds / 3600).toString().padStart(2, '0');
        let m = Math.floor((seconds % 3600) / 60).toString().padStart(2, '0');
        let s = (seconds % 60).toString().padStart(2, '0');
        return `${h}:${m}:${s}`;
    }

    function refreshData(isManual = false) {
        if(ajaxRequest) { ajaxRequest.abort(); }

        ajaxRequest = $.ajax({
            url: monitoringUrl,
            method: "GET",
            dataType: "json", 
            success: function(response) {
                if(!response || !response.siswa) {
                    $('#siswa-grid').html(`<div class="col-12 text-center py-5 text-danger"><i class="fas fa-exclamation-triangle fa-3x mb-3 opacity-50"></i><h6 class="font-weight-bold">Format Respons Tidak Valid</h6></div>`);
                    return;
                }

                // Update Statistik Angka
                $('#count-total').text(response.total_siswa);
                $('#count-online').text(response.siswa.filter(s => s.status === 'online').length);
                $('#count-offline').text(response.siswa.filter(s => s.status === 'offline_gangguan').length);
                $('#count-selesai').text(response.selesai);

                if (response.siswa.length === 0) {
                    $('#siswa-grid').html(`<div class="col-12 text-center py-5"><div style="width:70px;height:70px;background:#f8fafc;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;margin-bottom:15px;"><i class="fas fa-user-clock fa-2x text-muted opacity-50"></i></div><h6 class="font-weight-bold text-dark">Belum Ada Peserta</h6><p class="text-muted small">Siswa belum ada yang terdaftar di kelas ujian ini.</p></div>`);
                    return;
                }

                let html = '';
                response.siswa.forEach(siswa => {
                    if(siswa.status === 'online' || siswa.status === 'offline_gangguan') {
                        studentTimers[siswa.id] = siswa.sisa_detik;
                    } else {
                        delete studentTimers[siswa.id];
                    }

                    let cardClass = 'card-wait'; let badgeClass = 'bg-secondary';
                    let timerHtml = '--:--:--'; let pulseHtml = ''; let actionBtn = '';

                    if(siswa.status === 'online') {
                        cardClass = 'card-online'; badgeClass = 'bg-online'; pulseHtml = '<div class="pulse-ring"></div>'; timerHtml = formatTime(siswa.sisa_detik);
                    } else if (siswa.status === 'offline_gangguan') {
                        cardClass = 'card-offline'; badgeClass = 'bg-offline'; timerHtml = `<span class="text-danger">${formatTime(siswa.sisa_detik)}</span>`;
                    } else if (siswa.status === 'selesai') {
                        cardClass = 'card-done'; badgeClass = 'bg-done'; timerHtml = 'Selesai';
                    } else if (siswa.status === 'belum_login') {
                        timerHtml = '<span class="text-muted">Belum Mulai</span>';
                    }

                    let fotoSrc = siswa.foto_profil;
                    let fallbackKamera = `https://ui-avatars.com/api/?name=NO+CAM&background=f1f5f9&color=64748b&bold=true`;
                    
                    if (modeKamera) { fotoSrc = siswa.foto_kamera ? siswa.foto_kamera : fallbackKamera; }

                    let opacity = (siswa.status === 'belum_login') ? '0.4' : '1';

                    if (siswa.ujian_siswa_id && siswa.status !== 'selesai' && siswa.status !== 'belum_login') {
                        actionBtn = `<button class="btn btn-outline-danger btn-action-overlay" onclick="bukaModalAksi(${siswa.ujian_siswa_id}, '${siswa.nama}')"><i class="fas fa-power-off mr-1"></i> Stop</button>`;
                    }

                    let alertBadge = siswa.pelanggaran > 0 ? `<div class="mt-1 text-danger small font-weight-bold"><i class="fas fa-exclamation-triangle"></i> ${siswa.pelanggaran} Alert</div>` : '';

                    html += `
                    <div class="col-6 col-sm-4 col-md-3 col-xl-2 mb-3 px-2">
                        <div class="student-card ${cardClass}">
                            <div class="avatar-wrapper" style="opacity: ${opacity}">
                                ${siswa.status === 'online' ? pulseHtml : ''}
                                <img src="${fotoSrc}" class="avatar-img" alt="Foto" onerror="this.src='https://ui-avatars.com/api/?name=${siswa.nama}&background=eef2ff&color=4f46e5&bold=true'">
                                <div class="status-indicator ${badgeClass}"></div>
                            </div>
                            <div class="student-name" title="${siswa.nama}">${siswa.nama}</div>
                            <div class="student-nis">${siswa.nis}</div>
                            <div class="timer-badge" id="timer-siswa-${siswa.id}">${timerHtml}</div>
                            ${alertBadge}
                            ${actionBtn}
                        </div>
                    </div>`;
                });
                
                $('#siswa-grid').html(html);
                
                if(isManual) {
                    Swal.mixin({ toast: true, position: 'top-end', showConfirmButton: false, timer: 1000 }).fire({ icon: 'success', title: 'Data tersinkronisasi' });
                }
            },
            error: function(xhr, status, error) {
                if(status === 'abort') return; 
                let errorMsg = xhr.responseJSON && xhr.responseJSON.error ? xhr.responseJSON.error : error;
                $('#siswa-grid').html(`
                    <div class="col-12 text-center py-5 text-danger">
                        <div style="width:70px;height:70px;background:#fef2f2;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;margin-bottom:15px;"><i class="fas fa-server fa-2x text-danger opacity-50"></i></div>
                        <h6 class="font-weight-bold">Gagal Sinkronisasi</h6>
                        <p class="small text-muted mb-0">Pastikan koneksi internet stabil (Kode: ${xhr.status})</p>
                    </div>
                `);
            }
        });
    }

    setInterval(() => {
        for (const [siswaId, detik] of Object.entries(studentTimers)) {
            if (detik > 0) {
                studentTimers[siswaId]--;
                $(`#timer-siswa-${siswaId}`).html(formatTime(studentTimers[siswaId]));
            } else if (detik === 0) {
                $(`#timer-siswa-${siswaId}`).html("<span class='text-danger'>Waktu Habis</span>");
            }
        }
    }, 1000);

    $(document).ready(function() {
        refreshData();
        setInterval(() => refreshData(false), 6000); 
    });

    function bukaModalAksi(id, nama) {
        $('#selected-ujian-siswa-id').val(id);
        $('#modal-nama-siswa').text(nama);
        $('#modalAksi').modal('show');
    }

    function forceFinish() {
        let id = $('#selected-ujian-siswa-id').val();
        let btn = $('#modalAksi .btn-danger');
        btn.prop('disabled', true).html('<i class="fas fa-spinner fa-spin"></i> Memproses...');

        $.post(forceFinishUrl, { ujian_siswa_id: id })
        .done(() => { 
             $('#modalAksi').modal('hide'); 
             refreshData(true); 
             Swal.fire({icon: 'success', title: 'Dihentikan', text: 'Ujian siswa berhasil dihentikan paksa.', timer: 1500, showConfirmButton: false, customClass: {popup: 'rounded-24'}}); 
        })
        .fail((xhr) => {
             Swal.fire({icon: 'error', title: 'Gagal', text: 'Terjadi kesalahan pada server.', customClass: {popup: 'rounded-24'}});
        })
        .always(() => { btn.prop('disabled', false).html('Hentikan Ujian'); });
    }
</script>
@stop