@extends('admin.layout')

@section('content')
<div class="flex justify-between items-center mb-6">
    <h1 class="text-3xl font-bold text-gray-800">Research Papers Management</h1>
    <a href="{{ route('admin.research-papers.create') }}" class="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg flex items-center">
        <i class="fas fa-plus mr-2"></i> Add New Research Paper
    </a>
</div>

<!-- Search and Filters -->
<div class="bg-white rounded-lg shadow p-6 mb-6">
    <form action="{{ route('admin.research-papers.index') }}" method="GET" class="grid grid-cols-1 md:grid-cols-5 gap-4">
        <div>
            <label class="block text-sm font-medium text-gray-700 mb-1">Search</label>
            <input type="text" name="search" value="{{ request('search') }}" 
                   class="w-full border border-gray-300 rounded-lg px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500"
                   placeholder="Search papers...">
        </div>
        
        <div>
            <label class="block text-sm font-medium text-gray-700 mb-1">Research Field</label>
            <select name="research_field" class="w-full border border-gray-300 rounded-lg px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500">
                <option value="">All Fields</option>
                @foreach($researchFields as $field)
                    <option value="{{ $field }}" {{ request('research_field') == $field ? 'selected' : '' }}>{{ $field }}</option>
                @endforeach
            </select>
        </div>
        
        <div>
            <label class="block text-sm font-medium text-gray-700 mb-1">Judge</label>
            <select name="judge_id" class="w-full border border-gray-300 rounded-lg px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500">
                <option value="">All Judges</option>
                @foreach($judges as $judge)
                    <option value="{{ $judge->id }}" {{ request('judge_id') == $judge->id ? 'selected' : '' }}>{{ $judge->first_name }} {{ $judge->last_name }}</option>
                @endforeach
            </select>
        </div>
        
        <div>
            <label class="block text-sm font-medium text-gray-700 mb-1">Status</label>
            <select name="status" class="w-full border border-gray-300 rounded-lg px-3 py-2 focus:outline-none focus:ring-2 focus:ring-blue-500">
                <option value="">All Statuses</option>
                @foreach($statuses as $status)
                    <option value="{{ $status }}" {{ request('status') == $status ? 'selected' : '' }}>{{ ucfirst(str_replace('_', ' ', $status)) }}</option>
                @endforeach
            </select>
        </div>
        
        <div class="flex items-end">
            <button type="submit" class="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded-lg w-full">
                <i class="fas fa-filter mr-2"></i> Filter
            </button>
        </div>
    </form>
</div>

<!-- Research Papers Table -->
<div class="bg-white rounded-lg shadow overflow-hidden">
    <div class="overflow-x-auto">
        <table class="min-w-full divide-y divide-gray-200">
            <thead class="bg-gray-50">
                <tr>
                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Title</th>
                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Author</th>
                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Research Field</th>
                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Judge</th>
                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Status</th>
                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Submitted</th>
                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Actions</th>
                </tr>
            </thead>
            <tbody class="bg-white divide-y divide-gray-200">
                @forelse($papers as $paper)
                <tr class="hover:bg-gray-50">
                    <td class="px-6 py-4">
                        <div class="text-sm font-medium text-gray-900">
                            {{ Str::limit($paper->title, 50) }}
                        </div>
                    </td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-900">
                        {{ $paper->user->first_name }} {{ $paper->user->last_name }}
                    </td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-900">
                        {{ $paper->research_field ?? 'N/A' }}
                    </td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-900">
                        {{ $paper->judge->first_name ?? 'N/A' }} {{ $paper->judge->last_name ?? '' }}
                    </td>
                    <td class="px-6 py-4 whitespace-nowrap">
                        <span class="px-2 inline-flex text-xs leading-5 font-semibold rounded-full {{ $paper->status_badge }}">
                            {{ ucfirst(str_replace('_', ' ', $paper->status)) }}
                        </span>
                    </td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                        {{ $paper->submitted_at->format('M j, Y') }}
                    </td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm font-medium">
                        <div class="flex space-x-2">
                            <a href="{{ route('admin.research-papers.show', $paper) }}" 
                               class="text-blue-600 hover:text-blue-900" title="View">
                                <i class="fas fa-eye"></i>
                            </a>
                            <a href="{{ route('admin.research-papers.edit', $paper) }}" 
                               class="text-green-600 hover:text-green-900" title="Edit">
                                <i class="fas fa-edit"></i>
                            </a>
                            <form action="{{ route('admin.research-papers.destroy', $paper) }}" method="POST" class="inline">
                                @csrf
                                @method('DELETE')
                                <button type="submit" class="text-red-600 hover:text-red-900" 
                                        onclick="return confirm('Are you sure you want to delete this research paper?')"
                                        title="Delete">
                                    <i class="fas fa-trash"></i>
                                </button>
                            </form>
                        </div>
                    </td>
                </tr>
                @empty
                <tr>
                    <td colspan="7" class="px-6 py-4 text-center text-sm text-gray-500">
                        No research papers found.
                    </td>
                </tr>
                @endforelse
            </tbody>
        </table>
    </div>
    
    <!-- Pagination -->
    <div class="bg-white px-4 py-3 border-t border-gray-200 sm:px-6">
        {{ $papers->links() }}
    </div>
</div>

<!-- Quick Stats -->
<div class="grid grid-cols-1 md:grid-cols-4 gap-6 mt-6">
    <div class="bg-white rounded-lg shadow p-6">
        <div class="flex items-center">
            <div class="p-3 rounded-full bg-blue-100 text-blue-600">
                <i class="fas fa-file-pdf text-xl"></i>
            </div>
            <div class="ml-4">
                <h3 class="text-lg font-semibold text-gray-600">Total Papers</h3>
                <p class="text-3xl font-bold text-gray-800">{{ $papers->total() }}</p>
            </div>
        </div>
    </div>
    
    <div class="bg-white rounded-lg shadow p-6">
        <div class="flex items-center">
            <div class="p-3 rounded-full bg-green-100 text-green-600">
                <i class="fas fa-check-circle text-xl"></i>
            </div>
            <div class="ml-4">
                <h3 class="text-lg font-semibold text-gray-600">Published</h3>
                <p class="text-3xl font-bold text-gray-800">{{ $papers->where('status', 'published')->count() }}</p>
            </div>
        </div>
    </div>
    
    <div class="bg-white rounded-lg shadow p-6">
        <div class="flex items-center">
            <div class="p-3 rounded-full bg-yellow-100 text-yellow-600">
                <i class="fas fa-clock text-xl"></i>
            </div>
            <div class="ml-4">
                <h3 class="text-lg font-semibold text-gray-600">Under Review</h3>
                <p class="text-3xl font-bold text-gray-800">{{ $papers->where('status', 'under_review')->count() }}</p>
            </div>
        </div>
    </div>
    
    <div class="bg-white rounded-lg shadow p-6">
        <div class="flex items-center">
            <div class="p-3 rounded-full bg-purple-100 text-purple-600">
                <i class="fas fa-star text-xl"></i>
            </div>
            <div class="ml-4">
                <h3 class="text-lg font-semibold text-gray-600">Featured</h3>
                <p class="text-3xl font-bold text-gray-800">{{ $papers->where('is_featured', true)->count() }}</p>
            </div>
        </div>
    </div>
</div>
@endsection