@extends('layouts.app')

@section('title', 'Subjects Management')

@section('content')
<div class="min-h-screen bg-gray-50 py-8">
    <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
        <!-- Header Section -->
        <div class="mb-8">
            <div class="flex flex-col sm:flex-row sm:items-center sm:justify-between">
                <div>
                    <h1 class="text-3xl font-bold text-gray-900">Subjects Management</h1>
                    <p class="mt-2 text-sm text-gray-600">Manage all subjects in the system</p>
                </div>
                <a href="{{ route('subjects.create') }}" 
                   class="mt-4 sm:mt-0 inline-flex items-center px-4 py-2 bg-blue-600 border border-transparent rounded-md font-semibold text-xs text-white uppercase tracking-widest hover:bg-blue-700 focus:bg-blue-700 active:bg-blue-800 focus:outline-none focus:ring-2 focus:ring-blue-500 focus:ring-offset-2 transition ease-in-out duration-150">
                    <svg class="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4v16m8-8H4"></path>
                    </svg>
                    Add New Subject
                </a>
            </div>
        </div>

        <!-- Success Message -->
        @if(session('success'))
            <div class="mb-6 p-4 bg-green-50 border border-green-200 rounded-lg flex items-center">
                <svg class="w-5 h-5 text-green-600 mr-3" fill="currentColor" viewBox="0 0 20 20">
                    <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z" clip-rule="evenodd"></path>
                </svg>
                <span class="text-green-800 font-medium">{{ session('success') }}</span>
            </div>
        @endif

        <!-- Subjects Table -->
        <div class="bg-white shadow-sm rounded-lg overflow-hidden">
            <div class="px-6 py-4 border-b border-gray-200">
                <h2 class="text-lg font-medium text-gray-900">All Subjects</h2>
                <p class="mt-1 text-sm text-gray-500">Total {{ $subjects->count() }} subject(s)</p>
            </div>

            @if($subjects->count() > 0)
                <div class="overflow-x-auto">
                    <table class="min-w-full divide-y divide-gray-200">
                        <thead class="bg-gray-50">
                            <tr>
                                <th scope="col" class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
                                    Subject Name
                                </th>
                                <th scope="col" class="px-6 py-3 text-right text-xs font-medium text-gray-500 uppercase tracking-wider">
                                    Actions
                                </th>
                            </tr>
                        </thead>
                        <tbody class="bg-white divide-y divide-gray-200">
                            @foreach($subjects as $subject)
                                <tr class="hover:bg-gray-50 transition-colors duration-150">
                                    <td class="px-6 py-4 whitespace-nowrap">
                                        <div class="flex items-center">
                                            <div class="flex-shrink-0 h-10 w-10 bg-blue-100 rounded-lg flex items-center justify-center">
                                                <svg class="h-6 w-6 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18.477 18.247 18 16.5 18c-1.746 0-3.332.477-4.5 1.253"></path>
                                                </svg>
                                            </div>
                                            <div class="ml-4">
                                                <div class="text-sm font-medium text-gray-900">{{ $subject->name }}</div>
                                                <div class="text-sm text-gray-500">Subject ID: {{ $subject->id }}</div>
                                            </div>
                                        </div>
                                    </td>
                                    <td class="px-6 py-4 whitespace-nowrap text-right text-sm font-medium">
                                        <div class="flex justify-end space-x-2">
                                            <a href="{{ route('subjects.edit', $subject) }}" 
                                               class="inline-flex items-center px-3 py-2 border border-gray-300 shadow-sm text-sm leading-4 font-medium rounded-md text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500 transition-colors duration-150">
                                                <svg class="w-4 h-4 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"></path>
                                                </svg>
                                                Edit
                                            </a>
                                            <form action="{{ route('subjects.destroy', $subject) }}" method="POST" class="inline">
                                                @csrf @method('DELETE')
                                                <button type="submit" 
                                                        onclick="return confirm('Are you sure you want to delete this subject? This action cannot be undone.')"
                                                        class="inline-flex items-center px-3 py-2 border border-transparent text-sm leading-4 font-medium rounded-md text-white bg-red-600 hover:bg-red-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-red-500 transition-colors duration-150">
                                                    <svg class="w-4 h-4 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"></path>
                                                    </svg>
                                                    Delete
                                                </button>
                                            </form>
                                        </div>
                                    </td>
                                </tr>
                            @endforeach
                        </tbody>
                    </table>
                </div>
            @else
                <!-- Empty State -->
                <div class="text-center py-12">
                    <svg class="mx-auto h-12 w-12 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18.477 18.247 18 16.5 18c-1.746 0-3.332.477-4.5 1.253"></path>
                    </svg>
                    <h3 class="mt-2 text-sm font-medium text-gray-900">No subjects</h3>
                    <p class="mt-1 text-sm text-gray-500">Get started by creating your first subject.</p>
                    <div class="mt-6">
                        <a href="{{ route('subjects.create') }}" 
                           class="inline-flex items-center px-4 py-2 border border-transparent shadow-sm text-sm font-medium rounded-md text-white bg-blue-600 hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500">
                            <svg class="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4v16m8-8H4"></path>
                            </svg>
                            Add Subject
                        </a>
                    </div>
                </div>
            @endif
        </div>

        <!-- Pagination (if using pagination) -->
        @if(method_exists($subjects, 'links'))
            <div class="mt-6">
                {{ $subjects->links() }}
            </div>
        @endif
    </div>
</div>

<!-- Custom Confirmation Dialog (Optional Enhancement) -->
<script>
function confirmDelete(event) {
    event.preventDefault();
    const form = event.target.closest('form');
    
    Swal.fire({
        title: 'Are you sure?',
        text: "You won't be able to revert this!",
        icon: 'warning',
        showCancelButton: true,
        confirmButtonColor: '#d33',
        cancelButtonColor: '#3085d6',
        confirmButtonText: 'Yes, delete it!',
        cancelButtonText: 'Cancel'
    }).then((result) => {
        if (result.isConfirmed) {
            form.submit();
        }
    });
}

// Add event listeners for delete buttons
document.addEventListener('DOMContentLoaded', function() {
    const deleteButtons = document.querySelectorAll('form button[type="submit"]');
    deleteButtons.forEach(button => {
        button.addEventListener('click', function(e) {
            if (!confirm('Are you sure you want to delete this subject? This action cannot be undone.')) {
                e.preventDefault();
            }
        });
    });
});
</script>

<style>
/* Custom scrollbar for table */
.overflow-x-auto::-webkit-scrollbar {
    height: 8px;
}

.overflow-x-auto::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.overflow-x-auto::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

.overflow-x-auto::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}
</style>
@endsection