@extends('layout.layout')

@section('content')
    @include('components.alert')

    <div class="container-fluid app-bg quizzes-page">
        <div class="page-shell">
            <div class="space-y-4">

                <x-page-title
                    title="Quizzes"
                    description="View assigned quizzes, track start and due times, check results, and start available quizzes.">
                </x-page-title>

                <div id="container">
                    <div class="ui-card quizzes-filter-card">
                        <div class="quizzes-filter-head">
                            <div class="quizzes-filter-head__main">
                                <div class="quizzes-filter-head__icon">
                                    <iconify-icon icon="ri:filter-3-line"></iconify-icon>
                                </div>

                                <div>
                                    <h5 class="quizzes-filter-head__title mb-0">Quiz Filters</h5>
                                    <p class="quizzes-filter-head__sub mb-0">
                                        Control how many quizzes appear and search by quiz information.
                                    </p>
                                </div>
                            </div>

                            @if (request('search') || request('per_page'))
                                <a href="{{ url()->current() }}" class="asset-btn asset-btn--secondary">
                                    <iconify-icon icon="ri:restart-line"></iconify-icon>
                                    Reset
                                </a>
                            @endif
                        </div>

                        <div class="quizzes-filter-grid">
                            <form action="" method="GET" class="quizzes-filter-item">
                                <input type="hidden" name="search" value="{{ request('search') }}">

                                <label for="per_page" class="asset-label">Show Records</label>
                                <select name="per_page" id="per_page" class="asset-select" onchange="this.form.submit()">
                                    @foreach ([5, 10, 25, 50, 100, 150] as $count)
                                        <option value="{{ $count }}" {{ request('per_page', 10) == $count ? 'selected' : '' }}>
                                            {{ $count }}
                                        </option>
                                    @endforeach
                                </select>
                            </form>

                            <form class="quizzes-search-form" action="" method="GET">
                                <input type="hidden" name="per_page" value="{{ request('per_page', 10) }}">

                                <label for="quiz_search" class="asset-label">Search</label>
                                <div class="quizzes-search">
                                    <input type="text"
                                           class="quizzes-search__input"
                                           id="quiz_search"
                                           name="search"
                                           placeholder="Search quizzes..."
                                           value="{{ request('search') }}">

                                    <button class="quizzes-search__button" type="submit" aria-label="Search">
                                        <iconify-icon icon="ion:search-outline"></iconify-icon>
                                    </button>
                                </div>
                            </form>
                        </div>
                    </div>

                    <div class="ui-card quizzes-table-card">
                        <div class="quizzes-table-head">
                            <div>
                                <h5 class="quizzes-table-title mb-0">Quiz Records</h5>
                                <p class="quizzes-table-sub mb-0">
                                    Quiz title, availability, teacher, admin, result, submission date, and available actions.
                                </p>
                            </div>

                            <span class="ui-pill ui-pill--info">
                                {{ $quizzes->total() ?? $quizzes->count() }} Quiz(zes)
                            </span>
                        </div>

                        <div class="quizzes-table-wrap">
                            <table class="table quizzes-table mb-0">
                                <thead>
                                    <tr>
                                        <th class="text-center">ID</th>
                                        <th>Name</th>
                                        <th>Due Date</th>
                                        <th>Teacher</th>
                                        <th>Admin</th>
                                        <th class="text-center">Result</th>
                                        <th class="text-center">Submitted Date</th>
                                        <th class="text-center">Actions</th>
                                    </tr>
                                </thead>

                                <tbody>
                                    @forelse ($quizzes as $quiz)
                                        @php
                                            $submission = $quiz->quizSubmissions;
                                            $teacher = $quiz->teacher;
                                            $admins = $quiz->admins ?? collect();
                                            $availableFrom = $quiz->available_from ? \Carbon\Carbon::parse($quiz->available_from) : null;
                                            $availableUntil = $quiz->available_until ? \Carbon\Carbon::parse($quiz->available_until) : null;
                                        @endphp

                                        <tr>
                                            <td class="text-center">
                                                <span class="quiz-id">#{{ $quiz->id }}</span>
                                            </td>

                                            <td>
                                                <div class="quiz-title-cell">
                                                    <div class="quiz-title">{{ $quiz->title }}</div>
                                                    <div class="quiz-subtitle">
                                                        {{ count($quiz->questions) }} Question(s)
                                                    </div>
                                                </div>
                                            </td>

                                            <td>
                                                <div class="quiz-schedule-stack">
                                                    <span class="ui-pill ui-pill--neutral">
                                                        Available:
                                                        <strong>{{ $availableFrom?->format('Y-m-d') ?? '-' }}</strong>
                                                        {{ $availableFrom?->format('H:i') ?? '' }}
                                                    </span>

                                                    <span class="ui-pill {{ $availableUntil ? 'ui-pill--warn' : 'ui-pill--success' }}">
                                                        Until:
                                                        <strong>{{ $availableUntil?->format('Y-m-d H:i') ?? 'No day limit' }}</strong>
                                                    </span>

                                                    @if ($quiz->starts_at_timestamp)
                                                        <span class="ui-pill ui-pill--info"
                                                              data-countdown="{{ $quiz->starts_at_timestamp }}"
                                                              data-countdown-label="Starts in"
                                                              data-quiz-id="{{ $quiz->id }}">
                                                            <i class="bi bi-clock"></i>
                                                            Loading...
                                                        </span>
                                                    @endif

                                                    @if ($quiz->due_at_timestamp)
                                                        <span class="ui-pill ui-pill--warn"
                                                              data-countdown="{{ $quiz->due_at_timestamp }}"
                                                              data-countdown-label="Due in"
                                                              data-countdown-ended="Quiz Expired"
                                                              data-quiz-id="{{ $quiz->id }}">
                                                            <i class="bi bi-clock"></i>
                                                            Loading...
                                                        </span>
                                                    @endif

                                                </div>
                                            </td>

                                            <td>
                                                <div class="quiz-person">
                                                    <div class="quiz-person__avatar">
                                                        {{ strtoupper(substr($teacher->first_name ?? 'T', 0, 1) . substr($teacher->last_name ?? '', 0, 1)) }}
                                                    </div>
                                                    <div class="quiz-person__name">
                                                        {{ $teacher->first_name ?? '' }} {{ $teacher->last_name ?? '' }}
                                                    </div>
                                                </div>
                                            </td>

                                            <td>
                                                <div class="quiz-admin-list">
                                                    @forelse ($admins as $admin)
                                                        <span class="ui-pill ui-pill--neutral">
                                                            {{ $admin->admin->full_name ?? '' }}
                                                        </span>
                                                    @empty
                                                        <span class="text-muted">-</span>
                                                    @endforelse
                                                </div>
                                            </td>

                                            <td class="text-center">
                                                @if ($quiz->quizSubmissions)
                                                    @if ($submission->passed)
                                                        <span class="ui-pill ui-pill--success">Pass</span>
                                                    @else
                                                        <span class="ui-pill ui-pill--danger">Fail</span>
                                                    @endif
                                                @else
                                                    <span class="ui-pill ui-pill--neutral">No Result</span>
                                                @endif
                                            </td>

                                            @if ($quiz->has_submission)
                                                <td class="text-center">
                                                    <span class="quiz-date">{{ $quiz->quizSubmissions->submitted_at }}</span>
                                                </td>
                                                <td class="text-center">
                                                    <a href="{{ route('quiz.feedback.page', $quiz->quizSubmissions->id) }}"
                                                       class="quiz-action-btn quiz-action-btn--primary">
                                                        <iconify-icon icon="ri:feedback-line"></iconify-icon>
                                                        Feedback
                                                    </a>
                                                </td>
                                            @elseif ($quiz->is_upcoming)
                                                <td class="text-center">
                                                    <span class="quiz-date">Not Started Yet</span>
                                                </td>
                                                <td class="text-center">
                                                    <span class="quiz-action-btn quiz-action-btn--disabled">
                                                        <iconify-icon icon="ri:time-line"></iconify-icon>
                                                        Not Started Yet
                                                    </span>
                                                </td>
                                            @elseif ($quiz->attempts->isNotEmpty() && $quiz->attempts->first()->status === 'in_progress')
                                                <td class="text-center">
                                                    <span class="quiz-date">Already Started</span>
                                                </td>
                                                <td class="text-center">
                                                    <span class="quiz-action-btn quiz-action-btn--disabled">
                                                        <iconify-icon icon="ri:loader-4-line"></iconify-icon>
                                                        Already Started
                                                    </span>
                                                </td>
                                            @elseif ($quiz->is_expired)
                                                <td class="text-center">
                                                    <span class="quiz-date">Expired</span>
                                                </td>
                                                <td class="text-center">
                                                    <span class="quiz-action-btn quiz-action-btn--danger">
                                                        <iconify-icon icon="ri:close-circle-line"></iconify-icon>
                                                        Expired
                                                    </span>
                                                </td>
                                            @elseif (!$quiz->can_start_now)
                                                <td class="text-center">
                                                    <span class="quiz-date">-</span>
                                                </td>
                                                <td class="text-center">
                                                    <span class="quiz-action-btn quiz-action-btn--disabled">
                                                        <iconify-icon icon="ri:play-circle-line"></iconify-icon>
                                                        Start Quiz
                                                    </span>
                                                </td>
                                            @else
                                                <td class="text-center">
                                                    <span class="quiz-date">Start Quiz</span>
                                                </td>
                                                <td class="text-center">
                                                    <a href="javascript:void(0)"
                                                       class="quiz-action-btn quiz-action-btn--success load-quiz"
                                                       data-quiz-id="{{ $quiz->id }}">
                                                        <iconify-icon icon="ri:play-circle-line"></iconify-icon>
                                                        Start Quiz
                                                    </a>
                                                </td>
                                            @endif
                                        </tr>
                                    @empty
                                        <tr>
                                            <td colspan="8">
                                                <div class="quizzes-empty">
                                                    <iconify-icon icon="ri:file-list-3-line"></iconify-icon>
                                                    <h6>No quizzes found.</h6>
                                                    <p>There are no quizzes matching your current filters.</p>
                                                </div>
                                            </td>
                                        </tr>
                                    @endforelse
                                </tbody>
                            </table>
                        </div>

                        @if ($quizzes->hasPages())
                            <div class="quizzes-pagination">
                                {{ $quizzes->appends(request()->except('page'))->links('pagination::bootstrap-5') }}
                            </div>
                        @endif
                    </div>
                </div>

            </div>
        </div>
    </div>
@endsection


@push('scripts')
    <script>
        $(document).ready(function () {
            $('.load-quiz').on('click', function (e) {
                e.preventDefault();

                const quizId = $(this).data('quiz-id');

                $.ajax({
                    url: "{{ route('getQuiz', ['id' => 'id']) }}".replace('id', quizId),
                    method: 'GET',
                    headers: {
                        'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
                    },
                    success: function (response) {
                        loadQuizContent(response, quizId);
                    },
                    error: function (xhr) {
                        toastr.error('Failed to load the quiz. Please try again.', xhr);
                    }
                });
            });

            function loadQuizContent(quizData, quizId) {
                const quizHtml = `
                    <div class="ui-card quiz-start-card">
                        <div class="quiz-start-card__icon">
                            <iconify-icon icon="ri:file-edit-line"></iconify-icon>
                        </div>

                        <h4 class="quiz-start-card__title">${quizData.title || 'Untitled Assessment'}</h4>

                        <p class="quiz-start-card__description">
                            ${quizData.description || 'No description available.'}
                        </p>

                        <button class="asset-btn asset-btn--primary start-quiz"
                                data-quiz-id="${quizData.id}">
                            <i class="bi bi-play-circle"></i>
                            Start Quiz
                        </button>
                    </div>
                `;

                $('#container')
                    .removeClass('quiz-container')
                    .html(quizHtml)
                    .addClass('quiz-container');

                $('.start-quiz').on('click', function (e) {
                    e.preventDefault();

                    const quizId = $(this).data('quiz-id');

                    $.ajax({
                        url: '{{ route('startQuiz') }}',
                        type: 'POST',
                        data: {
                            quizId: quizId,
                            _token: $('meta[name="csrf-token"]').attr('content')
                        },
                        success: function (response) {
                            if (response.success) {
                                window.location.href = "{{ route('showQuestions', ['quizId' => 'id']) }}".replace('id', quizId);
                            } else {
                                toastr.error(response.error || 'Quiz start failed. Please try again.');
                            }
                        },
                        error: function (xhr) {
                            if (xhr.responseJSON && xhr.responseJSON.error) {
                                toastr.error(xhr.responseJSON.error);
                            } else {
                                toastr.error('Failed to start the Quiz. Please try again.');
                            }
                        }
                    });
                });
            }

            function updateCountdowns() {
                $('[data-countdown]').each(function () {
                    const $this = $(this);
                    const targetTime = parseInt($this.data('countdown'));
                    const now = Math.floor(Date.now() / 1000);
                    const timeDiff = targetTime - now;

                    if (timeDiff <= 0) {
                        $this.removeClass('ui-pill--info ui-pill--warn').addClass('ui-pill--success');
                        const endedText = $this.data('countdown-ended') || 'Quiz Started!';
                        $this.html('<i class="bi bi-check-circle"></i> ' + endedText);

                        setTimeout(function () {
                            location.reload();
                        }, 2000);
                    } else {
                        const days = Math.floor(timeDiff / 86400);
                        const hours = Math.floor((timeDiff % 86400) / 3600);
                        const minutes = Math.floor((timeDiff % 3600) / 60);
                        const seconds = timeDiff % 60;

                        const label = $this.data('countdown-label') || '';
                        let countdownText = '<i class="bi bi-clock"></i> ';

                        if (label) {
                            countdownText += label + ': ';
                        }

                        if (days > 0) {
                            countdownText += days + 'd ';
                        }

                        if (hours > 0 || days > 0) {
                            countdownText += hours + 'h ';
                        }

                        if (minutes > 0 || hours > 0 || days > 0) {
                            countdownText += minutes + 'm ';
                        }

                        countdownText += seconds + 's';

                        $this.html(countdownText);
                    }
                });
            }

            if ($('[data-countdown]').length > 0) {
                updateCountdowns();
                setInterval(updateCountdowns, 1000);
            }
        });
    </script>
@endpush

@push('styles')
    <style>
        .quizzes-page .ui-card {
            border: 1px solid #e5e7eb;
            border-radius: 22px;
            background: #fff;
            box-shadow: 0 14px 38px rgba(15, 23, 42, 0.07);
            padding: 1.25rem;
            overflow: hidden;
        }

        .quizzes-filter-head {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 1rem;
            padding-bottom: 1rem;
            margin-bottom: 1rem;
            border-bottom: 1px solid #eef2f7;
            flex-wrap: wrap;
        }

        .quizzes-filter-head__main {
            display: flex;
            align-items: center;
            gap: 0.85rem;
            min-width: 0;
        }

        .quizzes-filter-head__icon {
            width: 48px;
            height: 48px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #eff6ff, #eef2ff);
            color: #071b3d;
            font-size: 1.45rem;
            flex-shrink: 0;
        }

        .quizzes-filter-head__title {
            font-size: 1.05rem !important;
            font-weight: 900;
            color: #111827;
        }

        .quizzes-filter-head__sub {
            color: #64748b;
            font-size: 0.9rem;
            line-height: 1.55;
            margin-top: 0.2rem;
        }

        .quizzes-filter-grid {
            display: grid;
            grid-template-columns: 180px minmax(260px, 1fr);
            gap: 1rem;
            align-items: end;
        }

        .quizzes-filter-item,
        .quizzes-search-form {
            min-width: 0;
        }

        .asset-label {
            display: inline-block;
            margin-bottom: 0.45rem;
            font-weight: 750;
            color: #374151;
            font-size: 0.9rem;
        }

        .asset-select {
            width: 100% !important;
            min-height: 44px;
            border: 1px solid #dbe2ea !important;
            border-radius: 14px !important;
            padding: 0.68rem 0.9rem;
            background: #fff;
            color: #111827;
            transition: 0.2s ease;
            box-shadow: none !important;
        }

        .asset-select:focus {
            outline: none;
            border-color: #b8c4d6 !important;
            box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.08) !important;
        }

        .quizzes-search {
            position: relative;
            width: 100%;
        }

        .quizzes-search__input {
            width: 100%;
            min-height: 44px;
            border: 1px solid #dbe2ea;
            border-radius: 14px;
            padding: 0.68rem 3rem 0.68rem 0.9rem;
            background: #fff;
            color: #111827;
            transition: 0.2s ease;
            box-shadow: none;
        }

        .quizzes-search__input:focus {
            outline: none;
            border-color: #b8c4d6;
            box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.08);
        }

        .quizzes-search__button {
            position: absolute;
            right: 0.4rem;
            top: 50%;
            transform: translateY(-50%);
            width: 36px;
            height: 36px;
            border: 0;
            border-radius: 12px;
            background: #111827;
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: 0.2s ease;
        }

        .quizzes-search__button:hover {
            background: #071b3d;
        }

        .quizzes-table-card {
            padding: 0 !important;
        }

        .quizzes-table-head {
            padding: 1.25rem;
            border-bottom: 1px solid #eef2f7;
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            background: #fff;
        }

        .quizzes-table-title {
            font-size: 1.05rem !important;
            font-weight: 900;
            color: #111827;
        }

        .quizzes-table-sub {
            color: #64748b;
            font-size: 0.9rem;
            line-height: 1.55;
            margin-top: 0.2rem;
        }

        .quizzes-table-wrap {
            width: 100%;
            overflow-x: auto;
        }

        .quizzes-table {
            min-width: 1180px;
            width: 100%;
            vertical-align: middle;
        }

        .quizzes-table thead th {
            background: #f8fafc;
            color: #475569;
            font-size: 0.78rem;
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            border-bottom: 1px solid #e5e7eb;
            padding: 0.9rem 1rem;
            white-space: nowrap;
        }

        .quizzes-table tbody td {
            color: #334155;
            font-size: 0.9rem;
            font-weight: 650;
            border-color: #eef2f7;
            padding: 0.95rem 1rem;
            vertical-align: middle;
        }

        .quizzes-table tbody tr {
            transition: 0.16s ease;
        }

        .quizzes-table tbody tr:hover {
            background: #f8fafc;
        }

        .quiz-id {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 42px;
            height: 30px;
            border-radius: 999px;
            background: #f3f4f6;
            color: #374151;
            font-size: 0.78rem;
            font-weight: 900;
        }

        .quiz-title-cell {
            min-width: 240px;
        }

        .quiz-title {
            color: #111827;
            font-weight: 900;
            line-height: 1.35;
            overflow-wrap: anywhere;
        }

        .quiz-subtitle {
            color: #94a3b8;
            font-size: 0.78rem !important;
            margin-top: 0.2rem;
            font-weight: 750;
        }

        .quiz-schedule-stack {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 0.45rem;
            min-width: 210px;
        }

        .quiz-person {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            min-width: 170px;
        }

        .quiz-person__avatar {
            width: 36px;
            height: 36px;
            border-radius: 13px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #eff6ff, #eef2ff);
            color: #071b3d;
            font-size: 0.78rem;
            font-weight: 900;
            flex-shrink: 0;
        }

        .quiz-person__name {
            color: #111827;
            font-size: 0.9rem;
            font-weight: 850;
            line-height: 1.35;
        }

        .quiz-admin-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.35rem;
            min-width: 180px;
        }

        .quiz-date {
            color: #64748b;
            font-size: 0.85rem;
            font-weight: 750;
            white-space: nowrap;
        }

        .quiz-action-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.35rem;
            min-height: 34px;
            border-radius: 999px;
            padding: 0.45rem 0.8rem;
            font-size: 0.78rem;
            font-weight: 900;
            text-decoration: none;
            transition: 0.18s ease;
            white-space: nowrap;
        }

        .quiz-action-btn--primary {
            background: #eff6ff;
            border: 1px solid #dbeafe;
            color: #0f1724;
        }

        .quiz-action-btn--primary:hover {
            background: #071b3d;
            border-color: #071b3d;
            color: #fff;
            transform: translateY(-1px);
        }

        .quiz-action-btn--success {
            background: #f0fdf4;
            border: 1px solid #bbf7d0;
            color: #166534;
        }

        .quiz-action-btn--success:hover {
            background: #16a34a;
            border-color: #16a34a;
            color: #fff;
            transform: translateY(-1px);
        }

        .quiz-action-btn--danger {
            background: #fef2f2;
            border: 1px solid #fecaca;
            color: #b91c1c;
            cursor: not-allowed;
        }

        .quiz-action-btn--disabled {
            background: #f3f4f6;
            border: 1px solid #e5e7eb;
            color: #6b7280;
            cursor: not-allowed;
        }

        .quizzes-empty {
            padding: 3rem 1rem;
            text-align: center;
            color: #94a3b8;
            background: #fff;
        }

        .quizzes-empty iconify-icon {
            display: block;
            font-size: 2.35rem;
            color: #cbd5e1;
            margin-bottom: 0.75rem;
        }

        .quizzes-empty h6 {
            margin: 0;
            color: #475569;
            font-weight: 850;
        }

        .quizzes-empty p {
            margin: 0.35rem 0 0;
            font-size: 0.9rem;
        }

        .quizzes-pagination {
            padding: 1rem 1.25rem;
            border-top: 1px solid #eef2f7;
            background: #fff;
        }

        .quiz-start-card {
            max-width: 640px;
            margin: 0 auto;
            text-align: center;
            padding: 2rem !important;
        }

        .quiz-start-card__icon {
            width: 70px;
            height: 70px;
            border-radius: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #eff6ff, #eef2ff);
            color: #071b3d;
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        .quiz-start-card__title {
            color: #111827;
            font-size: 1.25rem !important;
            font-weight: 900;
            margin-bottom: 0.5rem;
        }

        .quiz-start-card__description {
            color: #64748b;
            font-size: 0.95rem;
            line-height: 1.65;
            margin-bottom: 1.25rem;
        }

        .asset-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
        }

        .ui-pill {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.35rem;
            border-radius: 999px;
            padding: 0.38rem 0.78rem;
            font-size: 0.76rem;
            font-weight: 850;
            line-height: 1.2;
            white-space: nowrap;
        }

        .ui-pill--primary {
            background: #eff6ff;
            color: #0f1724;
        }

        .ui-pill--info {
            background: #eef2ff;
            color: #4338ca;
        }

        .ui-pill--success {
            background: #f0fdf4;
            color: #166534;
        }

        .ui-pill--warn {
            background: #fffbeb;
            color: #92400e;
        }

        .ui-pill--danger {
            background: #fef2f2;
            color: #b91c1c;
        }

        .ui-pill--neutral {
            background: #f3f4f6;
            color: #374151;
        }

        @media (max-width: 991.98px) {
            .quizzes-filter-grid {
                grid-template-columns: 1fr;
            }

            .quizzes-filter-head__main {
                align-items: flex-start;
            }
        }

        @media (max-width: 575.98px) {
            .quizzes-page .ui-card {
                padding: 1rem;
            }

            .quizzes-table-head,
            .quizzes-pagination {
                padding: 1rem;
            }

            .quiz-start-card {
                padding: 1.25rem !important;
            }
        }
    </style>
@endpush