@extends('layouts.admin')

@section('title', 'القائمة الذهبية')

@section('content')
<div class="container-fluid">
    <div class="row">
        @include('components.admin-sidebar')
        <div class="col-md-9 col-lg-10">
            <!-- Header -->
            <div class="card mb-4" style="background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);">
                <div class="card-body text-white">
                    <div class="d-flex justify-content-between align-items-center">
                        <div>
                            <h3 class="mb-2">
                                <i class="fas fa-video me-2"></i>
                                استعراض الفيديوهات
                            </h3>
                            <p class="mb-0 opacity-75">ابحث عن الفيديوهات وأضفها للقائمة الذهبية مباشرة</p>
                        </div>
                        <a href="{{ route($routePrefix . '.golden-list.index') }}" class="btn btn-light btn-lg">
                            <i class="fas fa-arrow-right me-2"></i>
                            العودة للقائمة الذهبية
                        </a>
                        </div>
                    </div>
                </div>

                <!-- Search -->
                <div class="card mb-4">
                    <div class="card-body">
                        <form method="GET" action="{{ route($routePrefix . '.golden-list.browse') }}" class="row g-3">
                            <div class="col-md-8">
                                <label class="form-label">البحث</label>
                                <input type="text" name="search" class="form-control" placeholder="ابحث بعنوان الفيديو" value="{{ $search }}">
                            </div>
                            <div class="col-md-2">
                                <label class="form-label">عدد النتائج</label>
                                <select name="per_page" class="form-select">
                                    <option value="10" {{ $perPage == 10 ? 'selected' : '' }}>10</option>
                                    <option value="20" {{ $perPage == 20 ? 'selected' : '' }}>20</option>
                                    <option value="50" {{ $perPage == 50 ? 'selected' : '' }}>50</option>
                                    <option value="100" {{ $perPage == 100 ? 'selected' : '' }}>100</option>
                                </select>
                            </div>
                            <div class="col-md-2 d-flex align-items-end gap-2">
                                <button type="submit" class="btn btn-primary flex-grow-1">
                                    <i class="fas fa-search me-2"></i> بحث
                                </button>
                                @if($search)
                                    <a href="{{ route($routePrefix . '.golden-list.browse') }}" class="btn btn-secondary">
                                        <i class="fas fa-times"></i>
                                    </a>
                                @endif
                            </div>
                        </form>
                    </div>
                </div>

                <!-- Videos Grid -->
                <div class="row">
                    @forelse($videos as $video)
                        <div class="col-md-6 col-lg-4 mb-4">
                            <div class="card h-100 shadow-sm">
                                <!-- Video Thumbnail -->
                                <div class="position-relative">
                                    <img data-src="{{ $video->getThumbnailUrl() }}"
                                         src="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='200'%3E%3Crect width='400' height='200' fill='%23f0f0f0'/%3E%3Ctext x='50%25' y='50%25' dominant-baseline='middle' text-anchor='middle' fill='%23999' font-size='16'%3E%D8%AC%D8%A7%D8%B1%D9%8A %D8%A7%D9%84%D8%AA%D8%AD%D9%85%D9%8A%D9%84...%3C/text%3E%3C/svg%3E"
                                         class="card-img-top lazy-load"
                                         alt="{{ $video->title }}"
                                         style="height: 200px; object-fit: cover;"
                                         onerror="this.src='data:image/svg+xml,%3Csvg xmlns=\'http://www.w3.org/2000/svg\' width=\'400\' height=\'200\'%3E%3Crect width=\'400\' height=\'200\' fill=\'%23ddd\'/%3E%3Ctext x=\'50%25\' y=\'50%25\' dominant-baseline=\'middle\' text-anchor=\'middle\' fill=\'%23999\' font-size=\'20\'%3ENo Image%3C/text%3E%3C/svg%3E'">
                                    
                                    <!-- Golden Badge if in list -->
                                    @if($video->isInGoldenList())
                                        <span class="position-absolute top-0 end-0 m-2 badge bg-warning text-dark">
                                            <i class="fas fa-star"></i> ذهبي
                                        </span>
                                    @endif
                                    
                                    <!-- Views Badge -->
                                    <span class="position-absolute bottom-0 start-0 m-2 badge bg-dark bg-opacity-75">
                                        <i class="fas fa-eye"></i> {{ number_format($video->video_views) }}
                                    </span>
                                </div>

                                <div class="card-body">
                                    <h6 class="card-title">{{ Str::limit($video->title, 50) }}</h6>
                                    <p class="card-text small text-muted mb-2">
                                        <i class="fas fa-user"></i> {{ $video->user ? $video->user->name : 'غير معروف' }}
                                    </p>
                                    <p class="card-text small text-muted">
                                        <i class="fas fa-calendar"></i> {{ $video->createdAt ? $video->createdAt->format('Y-m-d') : '-' }}
                                    </p>

                                    <!-- Quick Add Button -->
                                    <button type="button"
                                            class="btn btn-warning btn-sm w-100 quick-add-btn"
                                            data-video-id="{{ $video->id }}"
                                            data-video-title="{{ $video->title }}"
                                            data-video-url="{{ $video->getVideoUrl() }}"
                                            data-video-thumbnail="{{ $video->getThumbnailUrl() }}">
                                        <i class="fas fa-star me-1"></i>
                                        إضافة للقائمة الذهبية
                                    </button>
                                </div>
                            </div>
                        </div>
                    @empty
                        <div class="col-12">
                            <div class="card">
                                <div class="card-body text-center py-5">
                                    <i class="fas fa-inbox fa-3x text-muted mb-3"></i>
                                    <p class="text-muted">لا توجد فيديوهات</p>
                                </div>
                            </div>
                        </div>
                    @endforelse
                </div>

                <!-- Pagination -->
                @if($videos->hasPages())
                    <div class="d-flex justify-content-center mt-4">
                        {{ $videos->links('vendor.pagination.bootstrap-5') }}
                    </div>
                @endif
            </div>
        </div>
    </div>
</div>

<!-- Quick Add Modal -->
<div class="modal fade" id="quickAddModal" tabindex="-1">
    <div class="modal-dialog modal-lg">
        <div class="modal-content">
            <div class="modal-header">
                <h5 class="modal-title">
                    <i class="fas fa-star text-warning me-2"></i>
                    إضافة للقائمة الذهبية
                </h5>
                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
            </div>
            <div class="modal-body">
                <div class="row">
                    <!-- Video Player Column -->
                    <div class="col-md-6 mb-3">
                        <div class="card bg-dark">
                            <div class="card-body p-2">
                                <video id="modal_video_player"
                                       class="w-100"
                                       controls
                                       style="max-height: 400px; border-radius: 8px;"
                                       poster="">
                                    <source id="modal_video_source" src="" type="video/mp4">
                                    المتصفح لا يدعم تشغيل الفيديو
                                </video>
                            </div>
                        </div>
                        <div class="mt-2">
                            <h6 id="modal_video_title" class="mb-0"></h6>
                        </div>
                    </div>

                    <!-- Form Column -->
                    <div class="col-md-6">
                        <form id="quickAddForm">
                            @csrf
                            <input type="hidden" id="modal_video_id" name="video_id">

                            <div class="mb-3">
                                <label class="form-label required">التصنيفات</label>
                                <small class="text-muted d-block mb-2">ابحث واختر تصنيف أو أكثر</small>

                                <!-- Search Box -->
                                <input type="text"
                                       id="category_search"
                                       class="form-control mb-2"
                                       placeholder="🔍 ابحث عن تصنيف...">

                                <!-- Categories List -->
                                <div class="border rounded p-3" style="max-height: 250px; overflow-y: auto;" id="categories_list">
                                    @foreach($categories as $category)
                                        <div class="form-check category-item" data-category-name="{{ strtolower($category->name_ar) }}">
                                            <input class="form-check-input category-checkbox" type="checkbox" name="category_ids[]" value="{{ $category->id }}" id="cat_{{ $category->id }}">
                                            <label class="form-check-label" for="cat_{{ $category->id }}">
                                                {{ $category->name_ar }}
                                            </label>
                                        </div>
                                    @endforeach
                                </div>
                                <small class="text-muted">تم اختيار: <span id="selected_count" class="fw-bold">0</span> تصنيف</small>
                            </div>

                            <div class="mb-3">
                                <label class="form-label required">الدول</label>
                                <input type="text" id="country_search" class="form-control mb-2" placeholder="🔍 ابحث عن دولة...">
                                <div style="max-height: 200px; overflow-y: auto; border: 1px solid #dee2e6; border-radius: 5px; padding: 10px;">
                                    @foreach($countries as $code => $name)
                                        <div class="form-check country-item">
                                            <input class="form-check-input country-checkbox"
                                                   type="checkbox"
                                                   name="countries[]"
                                                   value="{{ $code }}"
                                                   id="country_{{ $code }}">
                                            <label class="form-check-label" for="country_{{ $code }}">
                                                {{ $name }}
                                            </label>
                                        </div>
                                    @endforeach
                                </div>
                                <small class="text-muted">تم اختيار: <span id="selected_countries_count" class="fw-bold">0</span> دولة</small>
                            </div>
                        </form>
                    </div>
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">إلغاء</button>
                <button type="button" class="btn btn-warning" id="submitQuickAdd">
                    <i class="fas fa-star me-2"></i>
                    إضافة للقائمة الذهبية
                </button>
            </div>
        </div>
    </div>
</div>

@push('scripts')
<script>
document.addEventListener('DOMContentLoaded', function() {
    const modal = new bootstrap.Modal(document.getElementById('quickAddModal'));
    const form = document.getElementById('quickAddForm');
    const submitBtn = document.getElementById('submitQuickAdd');
    const videoPlayer = document.getElementById('modal_video_player');
    const videoSource = document.getElementById('modal_video_source');
    const categorySearch = document.getElementById('category_search');
    const selectedCount = document.getElementById('selected_count');

    // Open modal when clicking quick add button
    document.querySelectorAll('.quick-add-btn').forEach(btn => {
        btn.addEventListener('click', function() {
            const videoId = this.dataset.videoId;
            const videoTitle = this.dataset.videoTitle;
            const videoUrl = this.dataset.videoUrl;
            const videoThumbnail = this.dataset.videoThumbnail;

            document.getElementById('modal_video_id').value = videoId;
            document.getElementById('modal_video_title').textContent = videoTitle;

            // Set video source and poster
            videoSource.src = videoUrl;
            videoPlayer.poster = videoThumbnail;
            videoPlayer.load();

            // Reset checkboxes and search
            form.querySelectorAll('.category-checkbox').forEach(cb => cb.checked = false);
            form.querySelectorAll('.country-checkbox').forEach(cb => cb.checked = false);
            categorySearch.value = '';
            document.getElementById('country_search').value = '';
            updateSelectedCount();
            updateCountriesCount();
            filterCategories('');

            modal.show();
        });
    });

    // Category search functionality
    categorySearch.addEventListener('input', function() {
        const searchTerm = this.value.toLowerCase().trim();
        filterCategories(searchTerm);
    });

    function filterCategories(searchTerm) {
        const categoryItems = document.querySelectorAll('.category-item');
        let visibleCount = 0;

        categoryItems.forEach(item => {
            const categoryName = item.dataset.categoryName;
            if (searchTerm === '' || categoryName.includes(searchTerm)) {
                item.style.display = 'block';
                visibleCount++;
            } else {
                item.style.display = 'none';
            }
        });

        // Show message if no results
        const categoriesList = document.getElementById('categories_list');
        let noResultsMsg = categoriesList.querySelector('.no-results-msg');

        if (visibleCount === 0) {
            if (!noResultsMsg) {
                noResultsMsg = document.createElement('div');
                noResultsMsg.className = 'no-results-msg text-center text-muted py-3';
                noResultsMsg.innerHTML = '<i class="fas fa-search me-2"></i>لا توجد نتائج';
                categoriesList.appendChild(noResultsMsg);
            }
        } else {
            if (noResultsMsg) {
                noResultsMsg.remove();
            }
        }
    }

    // Update selected count for categories
    form.querySelectorAll('.category-checkbox').forEach(checkbox => {
        checkbox.addEventListener('change', updateSelectedCount);
    });

    function updateSelectedCount() {
        const count = form.querySelectorAll('.category-checkbox:checked').length;
        selectedCount.textContent = count;
    }

    // Pause video when modal closes
    document.getElementById('quickAddModal').addEventListener('hidden.bs.modal', function() {
        videoPlayer.pause();
    });

    // Submit form
    submitBtn.addEventListener('click', function() {
        const formData = new FormData(form);
        const data = {
            video_id: formData.get('video_id'),
            category_ids: formData.getAll('category_ids[]'),
            countries: formData.getAll('countries[]')
        };

        if (data.category_ids.length === 0) {
            alert('الرجاء اختيار تصنيف واحد على الأقل');
            return;
        }

        if (data.countries.length === 0) {
            alert('الرجاء اختيار دولة واحدة على الأقل');
            return;
        }

        submitBtn.disabled = true;
        submitBtn.innerHTML = '<i class="fas fa-spinner fa-spin me-2"></i> جاري الإضافة...';

        fetch('{{ route($routePrefix . ".golden-list.quick-add") }}', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'X-CSRF-TOKEN': document.querySelector('meta[name="csrf-token"]').content
            },
            body: JSON.stringify(data)
        })
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                alert(data.message);
                modal.hide();
                location.reload();
            } else {
                alert(data.message || 'حدث خطأ');
            }
        })
        .catch(error => {
            console.error('Error:', error);
            alert('حدث خطأ أثناء الإضافة');
        })
        .finally(() => {
            submitBtn.disabled = false;
            submitBtn.innerHTML = '<i class="fas fa-star me-2"></i> إضافة للقائمة الذهبية';
        });
    });

    // ============================================
    // Lazy Loading for Images
    // ============================================

    // Check if browser supports IntersectionObserver
    if ('IntersectionObserver' in window) {
        // Create intersection observer
        const imageObserver = new IntersectionObserver((entries, observer) => {
            entries.forEach(entry => {
                if (entry.isIntersecting) {
                    const img = entry.target;
                    const src = img.getAttribute('data-src');

                    if (src) {
                        // Add loading animation
                        img.style.opacity = '0.5';
                        img.style.transition = 'opacity 0.3s ease-in-out';

                        // Load the image
                        img.src = src;

                        // When image loads successfully
                        img.onload = function() {
                            img.style.opacity = '1';
                            img.classList.add('loaded');
                            img.classList.remove('lazy-load');
                            img.removeAttribute('data-src');
                        };

                        // Stop observing this image
                        observer.unobserve(img);
                    }
                }
            });
        }, {
            // Load images 50px before they enter viewport
            rootMargin: '50px',
            threshold: 0.01
        });

        // Observe all lazy-load images
        document.querySelectorAll('img.lazy-load').forEach(img => {
            imageObserver.observe(img);
        });
    } else {
        // Fallback for browsers that don't support IntersectionObserver
        document.querySelectorAll('img.lazy-load').forEach(img => {
            const src = img.getAttribute('data-src');
            if (src) {
                img.src = src;
                img.removeAttribute('data-src');
                img.classList.remove('lazy-load');
            }
        });
    }

    // Country checkboxes counter
    const countryCheckboxes = document.querySelectorAll('.country-checkbox');
    const selectedCountriesCount = document.getElementById('selected_countries_count');

    function updateCountriesCount() {
        const checkedCount = document.querySelectorAll('.country-checkbox:checked').length;
        selectedCountriesCount.textContent = checkedCount;
    }

    countryCheckboxes.forEach(checkbox => {
        checkbox.addEventListener('change', updateCountriesCount);
    });

    // Country search functionality
    const countrySearch = document.getElementById('country_search');
    const countryItems = document.querySelectorAll('.country-item');

    countrySearch.addEventListener('input', function() {
        const searchTerm = this.value.toLowerCase().trim();

        countryItems.forEach(item => {
            const label = item.querySelector('label').textContent.toLowerCase();
            if (label.includes(searchTerm)) {
                item.style.display = 'block';
            } else {
                item.style.display = 'none';
            }
        });
    });
});
</script>
@endpush
@endsection