@extends('layout.main')

@section('content')
    <div class="container mx-auto px-6">
        <!-- Page Header -->
        <div class="flex items-center justify-between my-6">
            <div>
                <h2 class="text-2xl font-semibold text-gray-700 dark:text-gray-200">
                    Expense Categories
                </h2>
                <p class="mt-1 text-sm text-gray-600 dark:text-gray-400">
                    Organize and manage your expense classification structure
                </p>
            </div>
            @if (Auth::user()->can('expenses-category-create'))
                <a href="{{ route('expense-categories.create') }}"
                    class="inline-flex items-center px-4 py-2 text-sm font-medium text-white bg-purple-600 border border-transparent rounded-lg hover:bg-purple-700 focus:outline-none focus:ring-2 focus:ring-purple-500 focus:ring-offset-2 transition-all duration-200">
                    <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 Category
                </a>
            @endif
        </div>

        <!-- Stats Cards for Categories -->
        <div class="grid grid-cols-1 md:grid-cols-4 gap-6 mb-6">
            <div class="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
                <div class="flex items-center">
                    <div class="flex-shrink-0">
                        <div class="w-8 h-8 bg-blue-100 dark:bg-blue-900 rounded-full flex items-center justify-center">
                            <svg class="w-4 h-4 text-blue-600 dark:text-blue-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10"></path>
                            </svg>
                        </div>
                    </div>
                    <div class="ml-4">
                        <div class="text-sm font-medium text-gray-500 dark:text-gray-400">Main Categories</div>
                        <div class="text-2xl font-bold text-gray-900 dark:text-white">{{ $categories->count() }}</div>
                    </div>
                </div>
            </div>

            <div class="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
                <div class="flex items-center">
                    <div class="flex-shrink-0">
                        <div class="w-8 h-8 bg-green-100 dark:bg-green-900 rounded-full flex items-center justify-center">
                            <svg class="w-4 h-4 text-green-600 dark:text-green-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 7h.01M7 3h5c.512 0 1.024.195 1.414.586l7 7a2 2 0 010 2.828l-7 7a2 2 0 01-2.828 0l-7-7A1.994 1.994 0 013 12V7a4 4 0 014-4z"></path>
                            </svg>
                        </div>
                    </div>
                    <div class="ml-4">
                        <div class="text-sm font-medium text-gray-500 dark:text-gray-400">Subcategories</div>
                        <div class="text-2xl font-bold text-gray-900 dark:text-white">{{ $categories->sum(function($cat) { return $cat->children->count(); }) }}</div>
                    </div>
                </div>
            </div>

            <div class="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
                <div class="flex items-center">
                    <div class="flex-shrink-0">
                        <div class="w-8 h-8 bg-purple-100 dark:bg-purple-900 rounded-full flex items-center justify-center">
                            <svg class="w-4 h-4 text-purple-600 dark:text-purple-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5H7a2 2 0 00-2 2v10a2 2 0 002 2h8a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2"></path>
                            </svg>
                        </div>
                    </div>
                    <div class="ml-4">
                        <div class="text-sm font-medium text-gray-500 dark:text-gray-400">Total Categories</div>
                        <div class="text-2xl font-bold text-gray-900 dark:text-white">
                            {{ $categories->count() + $categories->sum(function($cat) { return $cat->children->count(); }) }}
                        </div>
                    </div>
                </div>
            </div>

            <div class="bg-white dark:bg-gray-800 rounded-lg shadow p-6">
                <div class="flex items-center">
                    <div class="flex-shrink-0">
                        <div class="w-8 h-8 bg-indigo-100 dark:bg-indigo-900 rounded-full flex items-center justify-center">
                            <svg class="w-4 h-4 text-indigo-600 dark:text-indigo-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"></path>
                            </svg>
                        </div>
                    </div>
                    <div class="ml-4">
                        <div class="text-sm font-medium text-gray-500 dark:text-gray-400">Latest Addition</div>
                        <div class="text-lg font-bold text-gray-900 dark:text-white">
                            @php
                                $latest = $categories->merge($categories->flatMap->children)->sortByDesc('created_at')->first();
                            @endphp
                            {{ $latest ? $latest->created_at->diffForHumans() : 'None' }}
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Categories Table -->
        <div class="bg-white dark:bg-gray-800 rounded-lg shadow overflow-hidden">
            <div class="px-6 py-4 border-b border-gray-200 dark:border-gray-700">
                <div class="flex items-center justify-between">
                    <h3 class="text-lg font-medium text-gray-900 dark:text-white">Category Structure</h3>
                    <div class="flex items-center space-x-2">
                        <span class="inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium bg-blue-100 text-blue-800 dark:bg-blue-900 dark:text-blue-200">
                            <svg class="w-3 h-3 mr-1" fill="currentColor" viewBox="0 0 20 20">
                                <path d="M3 4a1 1 0 011-1h12a1 1 0 011 1v2a1 1 0 01-1 1H4a1 1 0 01-1-1V4zM3 10a1 1 0 011-1h6a1 1 0 011 1v6a1 1 0 01-1 1H4a1 1 0 01-1-1v-6zM14 9a1 1 0 00-1 1v6a1 1 0 001 1h2a1 1 0 001-1v-6a1 1 0 00-1-1h-2z"></path>
                            </svg>
                            Hierarchical
                        </span>
                    </div>
                </div>
            </div>
            
            <div class="overflow-x-auto">
                <x-table.table datatable>
                    <x-table.head>
                        <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wider">
                            Category Name
                        </th>
                        <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wider">
                            Level
                        </th>
                        <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wider">
                            Created Date
                        </th>
                        <th class="px-6 py-3 text-center text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wider">
                            Actions
                        </th>
                    </x-table.head>
                    <x-table.body>
                        @forelse ($categories as $category)
                            <!-- Main Category -->
                            <x-table.row class="hover:bg-gray-50 dark:hover:bg-gray-700 border-l-4 border-blue-500">
                                <x-table.cell class="px-6 py-4">
                                    <div class="flex items-center">
                                        <div class="flex-shrink-0 mr-3">
                                            <div class="w-8 h-8 bg-blue-100 dark:bg-blue-900 rounded-lg flex items-center justify-center">
                                                <svg class="w-4 h-4 text-blue-600 dark:text-blue-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10"></path>
                                                </svg>
                                            </div>
                                        </div>
                                        <div>
                                            <div class="text-sm font-medium text-gray-900 dark:text-white">
                                                {{ $category->name }}
                                            </div>
                                            @if($category->children->count() > 0)
                                                <div class="text-xs text-blue-600 dark:text-blue-400">
                                                    {{ $category->children->count() }} subcategory{{ $category->children->count() !== 1 ? 'ies' : 'y' }}
                                                </div>
                                            @endif
                                        </div>
                                    </div>
                                </x-table.cell>
                                <x-table.cell class="px-6 py-4 whitespace-nowrap">
                                    <span class="inline-flex px-2 py-1 text-xs font-semibold rounded-full bg-blue-100 text-blue-800 dark:bg-blue-900 dark:text-blue-200">
                                        Main Category
                                    </span>
                                </x-table.cell>
                                <x-table.cell class="px-6 py-4 whitespace-nowrap">
                                    <div class="text-sm text-gray-900 dark:text-white">
                                        {{ $category->created_at->format('M j, Y') }}
                                    </div>
                                    <div class="text-xs text-gray-500 dark:text-gray-400">
                                        {{ $category->created_at->diffForHumans() }}
                                    </div>
                                </x-table.cell>
                                <x-table.cell class="px-6 py-4 whitespace-nowrap text-center">
                                    <div class="flex justify-center items-center space-x-2">
                                        @can('expenses-category-edit')
                                            <button title="Edit Category" 
                                                onclick="window.location.href='{{ route('expense-categories.edit', $category) }}'"
                                                class="text-indigo-600 hover:text-indigo-900 dark:text-indigo-400 dark:hover:text-indigo-300">
                                                <svg class="w-4 h-4" 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>
                                            </button>
                                        @endcan
                                        @can('expenses-category-delete')
                                            <x-delete-button route="{{ route('expense-categories.destroy', $category) }}" 
                                                class="text-red-600 hover:text-red-900 dark:text-red-400 dark:hover:text-red-300" />
                                        @endcan
                                    </div>
                                </x-table.cell>
                            </x-table.row>

                            <!-- Display Subcategories -->
                            @foreach ($category->children as $child)
                                <x-table.row class="hover:bg-green-50 dark:hover:bg-green-900/10 border-l-4 border-green-400">
                                    <x-table.cell class="px-6 py-4">
                                        <div class="flex items-center pl-8">
                                            <div class="flex-shrink-0 mr-3">
                                                <div class="w-6 h-6 bg-green-100 dark:bg-green-900 rounded-md flex items-center justify-center">
                                                    <svg class="w-3 h-3 text-green-600 dark:text-green-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 7h.01M7 3h5c.512 0 1.024.195 1.414.586l7 7a2 2 0 010 2.828l-7 7a2 2 0 01-2.828 0l-7-7A1.994 1.994 0 013 12V7a4 4 0 014-4z"></path>
                                                    </svg>
                                                </div>
                                            </div>
                                            <div class="flex items-center">
                                                <svg class="w-4 h-4 text-gray-400 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17 8l4 4m0 0l-4 4m4-4H3"></path>
                                                </svg>
                                                <div class="text-sm text-gray-900 dark:text-white">
                                                    {{ $child->name }}
                                                </div>
                                            </div>
                                        </div>
                                    </x-table.cell>
                                    <x-table.cell class="px-6 py-4 whitespace-nowrap">
                                        <span class="inline-flex px-2 py-1 text-xs font-semibold rounded-full bg-green-100 text-green-800 dark:bg-green-900 dark:text-green-200">
                                            Subcategory
                                        </span>
                                    </x-table.cell>
                                    <x-table.cell class="px-6 py-4 whitespace-nowrap">
                                        <div class="text-sm text-gray-900 dark:text-white">
                                            {{ $child->created_at->format('M j, Y') }}
                                        </div>
                                        <div class="text-xs text-gray-500 dark:text-gray-400">
                                            {{ $child->created_at->diffForHumans() }}
                                        </div>
                                    </x-table.cell>
                                    <x-table.cell class="px-6 py-4 whitespace-nowrap text-center">
                                        <div class="flex justify-center items-center space-x-2">
                                            @can('expenses-category-edit')
                                                <button title="Edit Subcategory" 
                                                    onclick="window.location.href='{{ route('expense-categories.edit', $child) }}'"
                                                    class="text-indigo-600 hover:text-indigo-900 dark:text-indigo-400 dark:hover:text-indigo-300">
                                                    <svg class="w-4 h-4" 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>
                                                </button>
                                            @endcan
                                            @can('expenses-category-delete')
                                                <x-delete-button route="{{ route('expense-categories.destroy', $child) }}" 
                                                    class="text-red-600 hover:text-red-900 dark:text-red-400 dark:hover:text-red-300" />
                                            @endcan
                                        </div>
                                    </x-table.cell>
                                </x-table.row>
                            @endforeach
                        @empty
                            <x-table.row>
                                <x-table.cell colspan="4" class="px-6 py-8 text-center">
                                    <div class="flex flex-col items-center justify-center space-y-3">
                                        <svg class="w-12 h-12 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1" 
                                                d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10"></path>
                                        </svg>
                                        <div class="text-gray-500 dark:text-gray-400">
                                            <p class="text-lg font-medium">No expense categories found</p>
                                            <p class="text-sm">Create your first category to organize expenses.</p>
                                        </div>
                                        @if (Auth::user()->can('expenses-category-create'))
                                            <a href="{{ route('expense-categories.create') }}" 
                                                class="inline-flex items-center px-4 py-2 text-sm font-medium text-purple-600 bg-purple-100 rounded-lg hover:bg-purple-200 transition-colors duration-200">
                                                Create First Category
                                            </a>
                                        @endif
                                    </div>
                                </x-table.cell>
                            </x-table.row>
                        @endforelse
                    </x-table.body>
                </x-table.table>
            </div>
        </div>
    </div>
@endsection