@extends('layouts.app')

@section('styles')
<style>
.sortable-ghost {
    opacity: 0.4;
    background-color: #f8f9fa;
}
.drag-handle {
    cursor: move;
    cursor: grab;
}
.drag-handle:active {
    cursor: grabbing;
}
</style>
@endsection

@section('content')
    <div class="page">
        <div class="page-inner">
            <header class="page-title-bar">
                <nav aria-label="breadcrumb">
                    <ol class="breadcrumb">
                        <li class="breadcrumb-item">
                            <a href="{{ route('tests.index') }}"><i class="breadcrumb-icon fa fa-angle-left mr-2"></i>{{ __('Tests') }}</a>
                        </li>
                        <li class="breadcrumb-item">
                            <a href="{{ route('tests.edit', $test->id) }}">{{ $test->trans('name') }}</a>
                        </li>
                        <li class="breadcrumb-item active">{{ __('Questions') }}</li>
                    </ol>
                </nav>
                <div class="d-md-flex align-items-md-start">
                    <h1 class="page-title mr-sm-auto">{{ __('Questions') }}: {{ $test->trans('name') }}</h1>
                    <div class="btn-toolbar">
                        <a href="{{ route('tests.questions.create', $test->id) }}" class="btn btn-primary">{{ __('Add Question') }}</a>
                    </div>
                </div>
            </header>

            @if(session('success'))
                <div class="alert alert-success alert-dismissible fade show" role="alert">
                    {{ session('success') }}
                    <button type="button" class="close" data-dismiss="alert" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
            @endif

            @if($categories->count() == 0)
                <div class="alert alert-warning">
                    {{ __('Please add point categories first before adding questions.') }}
                    <a href="{{ route('tests.categories', $test->id) }}">{{ __('Add Categories') }}</a>
                </div>
            @endif

            <div class="page-section">
                @php
                    $questionsPerPage = $test->questions_per_page ?? 5;
                    $totalPages = $questions->count() > 0 ? ceil($questions->count() / $questionsPerPage) : 0;
                    $pageHeaders = $test->pageHeaders->keyBy('page_number');
                @endphp

                @if($questions->count() > 0)
                    @for($pageNum = 1; $pageNum <= $totalPages; $pageNum++)
                        @php
                            $startIndex = ($pageNum - 1) * $questionsPerPage;
                            $pageQuestions = $questions->slice($startIndex, $questionsPerPage);
                            $pageHeader = $pageHeaders->get($pageNum);
                        @endphp

                        <section class="card card-fluid mb-4">
                            <div class="card-header bg-light d-flex justify-content-between align-items-center">
                                <h5 class="mb-0">
                                    <i class="fa fa-file-alt mr-2"></i>{{ __('Page') }} {{ $pageNum }}
                                </h5>
                                <button type="button" class="btn btn-sm btn-outline-secondary" 
                                    data-toggle="modal" data-target="#pageHeaderModal{{ $pageNum }}">
                                    <i class="fa fa-edit"></i> {{ __('Edit Page Header') }}
                                </button>
                            </div>
                            
                            @if($pageHeader && $pageHeader->title)
                                <div class="card-body bg-info text-white py-2">
                                    <strong>{{ __('Page Header') }}:</strong> {!! $pageHeader->title !!}
                                </div>
                            @endif

                            <div class="card-body p-0">
                                <table class="table table-hover mb-0">
                                    <thead>
                                        <tr>
                                            <th style="width: 50px;">#</th>
                                            <th>{{ __('Question') }}</th>
                                            <th>{{ __('Type') }}</th>
                                            <th>{{ __('Render') }}</th>
                                            <th>{{ __('Answers') }}</th>
                                            <th>{{ __('Categories') }}</th>
                                            <th>{{ __('Actions') }}</th>
                                        </tr>
                                    </thead>
                                    <tbody class="questions-list" data-page="{{ $pageNum }}">
                                        @foreach($pageQuestions as $question)
                                            @php $questionNumber = $startIndex + $loop->iteration; @endphp
                                            <tr data-id="{{ $question->id }}">
                                                <td>
                                                    <i class="fa fa-bars text-muted mr-2 drag-handle"></i>
                                                    <span class="question-number">{{ $questionNumber }}</span>
                                                </td>
                                                <td>
                                                    {{ \Illuminate\Support\Str::limit($question->question, 60) }}
                                                    @if($question->extra_content)
                                                        <br><small class="text-muted"><em>{{ \Illuminate\Support\Str::limit($question->extra_content, 40) }}</em></small>
                                                    @endif
                                                </td>
                                                <td>
                                                    @if($question->type == 0)
                                                        <span class="badge badge-primary">{{ __('Single') }}</span>
                                                    @elseif($question->type == 1)
                                                        <span class="badge badge-info">{{ __('Multiple') }}</span>
                                                    @else
                                                        <span class="badge badge-secondary">{{ __('Other') }}</span>
                                                    @endif
                                                </td>
                                                <td>
                                                    <span class="badge badge-light">{{ $question->render_type ?? 'radio' }}</span>
                                                </td>
                                                <td>{{ $question->answers->count() }}</td>
                                                <td>
                                                    @if($question->render_type === 'slider')
                                                        {{ $question->categoryScores->count() }}
                                                    @else
                                                        @php
                                                            $uniqueCats = collect();
                                                            foreach($question->answers as $ans) {
                                                                foreach($ans->categoryScores as $cs) {
                                                                    $uniqueCats->push($cs->category_id);
                                                                }
                                                                if($ans->category_id) {
                                                                    $uniqueCats->push($ans->category_id);
                                                                }
                                                            }
                                                        @endphp
                                                        {{ $uniqueCats->unique()->count() }}
                                                    @endif
                                                </td>
                                                <td>
                                                    <a href="{{ route('tests.questions.edit', [$test->id, $question->id]) }}" class="btn btn-sm btn-primary">{{ __('Edit') }}</a>
                                                    <form method="POST" action="{{ route('tests.questions.destroy', [$test->id, $question->id]) }}" 
                                                        style="display:inline" onsubmit="return confirm('{{ __('Are you sure?') }}')">
                                                        @csrf
                                                        @method('DELETE')
                                                        <button type="submit" class="btn btn-sm btn-danger">{{ __('Delete') }}</button>
                                                    </form>
                                                </td>
                                            </tr>
                                        @endforeach
                                    </tbody>
                                </table>
                            </div>
                        </section>

                        <!-- Page Header Modal -->
                        <div class="modal fade" id="pageHeaderModal{{ $pageNum }}" tabindex="-1" role="dialog">
                            <div class="modal-dialog" role="document">
                                <div class="modal-content">
                                    <form method="POST" action="{{ route('tests.page-headers.update', [$test->id, $pageNum]) }}">
                                        @csrf
                                        @method('PUT')
                                        <div class="modal-header">
                                            <h5 class="modal-title">{{ __('Edit Page Header') }} - {{ __('Page') }} {{ $pageNum }}</h5>
                                            <button type="button" class="close" data-dismiss="modal">
                                                <span>&times;</span>
                                            </button>
                                        </div>
                                        <div class="modal-body">
                                            @include('components.translatable-input', [
                                                'name' => 'title',
                                                'label' => __('Page Header/Title'),
                                                'model' => $pageHeader,
                                                'type' => 'textarea',
                                                'rows' => 3
                                            ])
                                            <small class="text-muted">{{ __('This text will be shown at the top of the page when users take the test.') }}</small>
                                        </div>
                                        <div class="modal-footer">
                                            <button type="button" class="btn btn-secondary" data-dismiss="modal">{{ __('Cancel') }}</button>
                                            <button type="submit" class="btn btn-primary">{{ __('Save') }}</button>
                                        </div>
                                    </form>
                                </div>
                            </div>
                        </div>
                    @endfor
                @else
                    <section class="card card-fluid">
                        <div class="card-body">
                            <p class="text-muted">{{ __('No questions yet. Add your first question.') }}</p>
                        </div>
                    </section>
                @endif

                <div class="mt-3">
                    <a href="{{ route('tests.categories', $test->id) }}" class="btn btn-secondary">{{ __('Back: Categories') }}</a>
                    <a href="{{ route('tests.algorithms', $test->id) }}" class="btn btn-primary">{{ __('Next: Algorithms') }}</a>
                </div>
            </div>
        </div>
    </div>
@endsection

@push('scripts')
<script src="https://cdn.jsdelivr.net/npm/sortablejs@1.15.0/Sortable.min.js"></script>
<script>
document.addEventListener('DOMContentLoaded', function() {
    // Initialize sortable on all question lists (one per page)
    var lists = document.querySelectorAll('.questions-list');
    lists.forEach(function(el) {
        Sortable.create(el, {
            animation: 150,
            handle: '.fa-bars',
            ghostClass: 'sortable-ghost',
            group: 'questions',
            onEnd: function(evt) {
                // Collect all question IDs in order across all pages
                var order = [];
                var counter = 1;
                document.querySelectorAll('.questions-list tr[data-id]').forEach(function(row) {
                    order.push(row.getAttribute('data-id'));
                    var numberSpan = row.querySelector('.question-number');
                    if (numberSpan) {
                        numberSpan.textContent = counter++;
                    }
                });
                
                fetch('/tests/{{ $test->id }}/questions/reorder', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json',
                        'X-CSRF-TOKEN': '{{ csrf_token() }}'
                    },
                    body: JSON.stringify({ order: order })
                })
                .then(response => response.json())
                .then(data => {
                    if (data.success) {
                        // Reload to update page groupings
                        window.location.reload();
                    }
                })
                .catch(error => console.error('Error:', error));
            }
        });
    });
});
</script>
@endpush