@extends('layouts.app')

@section('title', 'Журнал всех уроков')

@php
    $statusLabels = [
        'attended' => ['Присутствовал', 'success'],
        'paid_absence' => ['Оплачиваемый пропуск', 'danger'],
        'free_absence' => ['Пропуск без списания', 'primary'],
    ];

    $pageQuery = function (int $page) use ($dateFrom, $dateTo, $selectedTeacherId, $mode) {
        return '?'.http_build_query([
            'page' => $page,
            'dateFrom' => $dateFrom,
            'dateTo' => $dateTo,
            'teacher_id' => (string) $selectedTeacherId,
            'mode' => $mode,
        ]);
    };

    // The two views share every filter, so switching between them keeps the
    // teacher and period the admin already picked.
    $modeQuery = function (string $targetMode) use ($dateFrom, $dateTo, $selectedTeacherId) {
        return '?'.http_build_query([
            'mode' => $targetMode,
            'dateFrom' => $dateFrom,
            'dateTo' => $dateTo,
            'teacher_id' => (string) $selectedTeacherId,
        ]);
    };
@endphp

@push('styles')
<style>
    .ax-lesson-row .ax-lesson-caret { display: inline-block; transition: transform .15s ease; }
    .ax-lesson-row[aria-expanded="true"] .ax-lesson-caret { transform: rotate(90deg); }
    .ax-lesson-row td { cursor: pointer; }
</style>
@endpush

@section('content')
    <div class="container-fluid">
        <h1 class="mb-3">Журнал всех уроков</h1>

        <div class="btn-group mb-4" role="group" aria-label="Режим просмотра">
            <a href="{{ $modeQuery('all') }}" class="btn {{ $mode === 'all' ? 'btn-primary' : 'btn-outline-primary' }}">Все уроки</a>
            <a href="{{ $modeQuery('blank') }}" class="btn {{ $mode === 'blank' ? 'btn-primary' : 'btn-outline-primary' }}">Незаполненные журналы</a>
        </div>

        @if ($dateError)
            <div class="alert alert-warning">{{ $dateError }}</div>
        @endif

        <h3>Период времени</h3>
        <form method="GET" id="filter-form" class="row g-3 mb-3">
            <input type="hidden" name="mode" value="{{ $mode }}">

            <div class="col-md-4">
                <label class="form-label">Преподаватель</label>
                <select name="teacher_id" class="form-select" onchange="submitForm()">
                    <option value="">Все преподаватели</option>
                    @foreach ($teachers as $teacher)
                        <option value="{{ $teacher->id }}" {{ (string) $teacher->id === (string) $selectedTeacherId ? 'selected' : '' }}>
                            {{ $teacher->name }}
                        </option>
                    @endforeach
                </select>
            </div>

            <div class="col-md-4">
                <label class="form-label">От</label>
                <input type="date" name="dateFrom" value="{{ $dateFrom }}" class="form-control" onchange="submitForm()">
            </div>

            <div class="col-md-4">
                <label class="form-label">До</label>
                <input type="date" name="dateTo" value="{{ $dateTo }}" class="form-control" onchange="submitForm()">
            </div>
        </form>

        @if ($mode === 'blank')
            <p class="text-muted">
                Уроки по расписанию, которые уже прошли, но журнал по ним преподаватель так и не заполнил.
                Праздничные дни и ещё не закончившиеся уроки не показываются.
                Найдено: <strong>{{ $blankTotal }}</strong>.
            </p>

            <div class="table-responsive">
                <table class="table table-striped table-hover">
                    <thead>
                        <tr>
                            <th>Дата урока</th>
                            <th>Название группы</th>
                            <th>Преподаватель</th>
                            <th>Время урока</th>
                            <th>Состояние</th>
                            <th></th>
                        </tr>
                    </thead>
                    <tbody>
                    @forelse ($blankLessons as $row)
                        <tr>
                            <td>{{ $row['date'] }}</td>
                            <td>{{ $row['group_name'] }}</td>
                            <td>{{ $row['teacher_name'] ?? 'Без преподавателя' }}</td>
                            <td>{{ substr($row['begin_time'], 0, 5) }} - {{ substr($row['end_time'], 0, 5) }}</td>
                            <td>
                                @if ($row['reason'] === 'auto')
                                    <span class="badge text-bg-warning">Отмечен автоматически</span>
                                @else
                                    <span class="badge text-bg-danger">Журнал не заполнен</span>
                                @endif
                            </td>
                            <td>
                                <a href="/group_admin_info.php?group_id={{ $row['group_id'] }}" class="btn btn-sm btn-outline-secondary">
                                    Группа
                                </a>
                            </td>
                        </tr>
                    @empty
                        <tr><td colspan="6" class="text-center">Незаполненных журналов за этот период нет</td></tr>
                    @endforelse
                    </tbody>
                </table>
            </div>
        @else
        <div class="table-responsive">
            <table class="table table-striped table-hover">
                <thead>
                    <tr>
                        <th style="width: 2rem;"></th>
                        <th>Название группы</th>
                        <th>Преподаватель</th>
                        <th>Время урока</th>
                        <th>Дата урока</th>
                        <th>Кол-во учеников</th>
                        <th>Общее кол-во учеников</th>
                    </tr>
                </thead>
                <tbody>
                @if (!empty($paginatedLessons))
                    @foreach ($paginatedLessons as $lesson)
                        @php
                            $students = $lessonStudents[$lesson->lesson_id] ?? [];
                        @endphp
                        <tr class="ax-lesson-row" role="button" data-bs-toggle="collapse" data-bs-target="#lesson-students-{{ $lesson->lesson_id }}" aria-expanded="false">
                            <td class="text-center"><span class="ax-lesson-caret">&#9656;</span></td>
                            <td>
                                {{ $lesson->group_name ?? 'Без группы' }}
                                @if (!empty($lesson->substitution_for_teacher_name))
                                    <span class="badge text-bg-info">Замена за {{ $lesson->substitution_for_teacher_name }}</span>
                                @endif
                            </td>
                            <td>
                                {{ $lesson->teacher_name ?? '-' }}
                                @if (!empty($lesson->auto_marked))
                                    <span class="badge text-bg-warning">Отмечен автоматически</span>
                                @endif
                            </td>
                            <td>{{ substr($lesson->begin_time, 0, 5) }} - {{ substr($lesson->end_time, 0, 5) }}</td>
                            <td>{{ $lesson->lesson_date }}</td>
                            <td>{{ $lesson->students_present ?? '-' }}</td>
                            <td>{{ $lesson->all_students ?? '-' }}</td>
                        </tr>
                        <tr class="collapse" id="lesson-students-{{ $lesson->lesson_id }}">
                            <td colspan="7" class="p-0 border-0">
                                <div class="p-3 bg-light">
                                    @if (empty($students))
                                        <span class="text-muted">Нет данных по ученикам для этого урока.</span>
                                    @else
                                        <table class="table table-sm table-bordered bg-white mb-0">
                                            <thead>
                                                <tr>
                                                    <th>Ученик</th>
                                                    <th>Статус</th>
                                                    <th>КР</th>
                                                    <th>ДЗ</th>
                                                    <th>Опоздание</th>
                                                </tr>
                                            </thead>
                                            <tbody>
                                            @foreach ($students as $st)
                                                @php
                                                    $statusInfo = $statusLabels[$st->status] ?? [$st->status ?: '-', 'secondary'];
                                                    $dz = $st->dz_not_assigned ? 'Не задавалось' : ($st->dz_score !== null ? $st->dz_score : '-');
                                                @endphp
                                                <tr>
                                                    <td>{{ trim($st->last_name.' '.$st->first_name) }}</td>
                                                    <td><span class="badge text-bg-{{ $statusInfo[1] }}">{{ $statusInfo[0] }}</span></td>
                                                    <td>{{ $st->kr_score !== null ? $st->kr_score : '-' }}</td>
                                                    <td>{{ $dz }}</td>
                                                    <td>{{ $st->lateness ?: '-' }}</td>
                                                </tr>
                                            @endforeach
                                            </tbody>
                                        </table>
                                    @endif
                                </div>
                            </td>
                        </tr>
                    @endforeach
                @else
                    <tr><td colspan="7" class="text-center">Нет данных</td></tr>
                @endif
                </tbody>
            </table>
        </div>
        @endif

        <nav>
            <ul class="pagination justify-content-center">
                @if ($totalPages > 1)
                    @for ($i = 1; $i <= $totalPages; $i++)
                        <li class="page-item {{ $i === $currentPage ? 'active' : '' }}">
                            <a href="{{ $pageQuery($i) }}" class="page-link">{{ $i }}</a>
                        </li>
                    @endfor
                @endif
            </ul>
        </nav>
    </div>
@endsection

@push('scripts')
<script>
    function submitForm() {
        document.getElementById('filter-form').submit();
    }
</script>
@endpush