@extends('layouts.app')

@section('title', 'Admin Dashboard')

@section('content')
<div class="container mx-auto px-4 py-6">
    <div class="flex justify-between items-center mb-6">
        <h1 class="text-2xl font-bold text-gray-900">Permission Admin Dashboard</h1>
        <div class="flex space-x-2">
            <a href="{{ route('permission.index') }}" class="inline-flex items-center px-4 py-2 border border-gray-300 rounded-md text-sm font-medium text-gray-700 bg-white hover:bg-gray-50">
                <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="M4 6h16M4 10h16M4 14h16M4 18h16"></path>
                </svg>
                All Permissions
            </a>
            <a href="{{ route('permission.create') }}" class="inline-flex items-center px-4 py-2 border border-transparent rounded-md shadow-sm text-sm font-medium text-white bg-blue-600 hover:bg-blue-700">
                <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>
                New Permission
            </a>
        </div>
    </div>

    <!-- Statistics Cards -->
    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4 mb-6">
        <div class="bg-blue-600 rounded-lg shadow-md p-6">
            <div class="flex justify-between items-center">
                <div>
                    <h4 class="text-2xl font-bold text-white">{{ $statistics['total_requests'] }}</h4>
                    <p class="text-blue-100">Total Requests</p>
                </div>
                <div class="flex-shrink-0">
                    <svg class="w-8 h-8 text-blue-200 opacity-75" 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 2v12a2 2 0 002 2h10a2 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>
        <div class="bg-yellow-500 rounded-lg shadow-md p-6">
            <div class="flex justify-between items-center">
                <div>
                    <h4 class="text-2xl font-bold text-white">{{ $statistics['pending_requests'] }}</h4>
                    <p class="text-yellow-100">Pending Requests</p>
                </div>
                <div class="flex-shrink-0">
                    <svg class="w-8 h-8 text-yellow-200 opacity-75" 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>
        <div class="bg-green-600 rounded-lg shadow-md p-6">
            <div class="flex justify-between items-center">
                <div>
                    <h4 class="text-2xl font-bold text-white">{{ $statistics['approved_today'] }}</h4>
                    <p class="text-green-100">Approved Today</p>
                </div>
                <div class="flex-shrink-0">
                    <svg class="w-8 h-8 text-green-200 opacity-75" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"></path>
                    </svg>
                </div>
            </div>
        </div>
        <div class="bg-red-600 rounded-lg shadow-md p-6">
            <div class="flex justify-between items-center">
                <div>
                    <h4 class="text-2xl font-bold text-white">{{ $statistics['rejected_today'] }}</h4>
                    <p class="text-red-100">Rejected Today</p>
                </div>
                <div class="flex-shrink-0">
                    <svg class="w-8 h-8 text-red-200 opacity-75" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10 14l2-2m0 0l2-2m-2 2l-2-2m2 2l2 2m7-2a9 9 0 11-18 0 9 9 0 0118 0z"></path>
                    </svg>
                </div>
            </div>
        </div>
    </div>

    <div class="grid grid-cols-1 lg:grid-cols-2 gap-6">
        <!-- Pending Approvals -->
        <div class="bg-white rounded-lg shadow-md">
            <div class="px-6 py-4 border-b border-gray-200 flex justify-between items-center">
                <h5 class="text-lg font-medium text-gray-900">Pending Approvals</h5>
                <span class="inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium bg-yellow-100 text-yellow-800">
                    {{ $pendingRequests->count() }}
                </span>
            </div>
            <div class="p-6">
                @if($pendingRequests->count() > 0)
                    <div class="overflow-x-auto">
                        <table class="min-w-full divide-y divide-gray-200">
                            <thead>
                                <tr>
                                    <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Employee</th>
                                    <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Type</th>
                                    <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Date</th>
                                    <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Actions</th>
                                </tr>
                            </thead>
                            <tbody class="divide-y divide-gray-200">
                                @foreach($pendingRequests as $request)
                                    <tr>
                                        <td class="px-4 py-3 text-sm text-gray-900">{{ $request->user->name }}</td>
                                        <td class="px-4 py-3 text-sm text-gray-900">{{ $request->permissionType->name }}</td>
                                        <td class="px-4 py-3 text-sm text-gray-900">{{ \Carbon\Carbon::parse($request->permission_date)->format('M d, Y') }}</td>
                                        <td class="px-4 py-3 text-sm">
                                            <div class="flex space-x-2">
                                                <a href="{{ route('permission.show', $request->id) }}" 
                                                   class="text-blue-600 hover:text-blue-900" title="View">
                                                    <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="M15 12a3 3 0 11-6 0 3 3 0 016 0z"></path>
                                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z"></path>
                                                    </svg>
                                                </a>
                                                <form action="{{ route('permission.approve', $request->id) }}" 
                                                      method="POST" class="inline">
                                                    @csrf
                                                    <button type="submit" class="text-green-600 hover:text-green-900" 
                                                            title="Approve"
                                                            onclick="return confirm('Approve this request?')">
                                                        <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="M5 13l4 4L19 7"></path>
                                                        </svg>
                                                    </button>
                                                </form>
                                            </div>
                                        </td>
                                    </tr>
                                @endforeach
                            </tbody>
                        </table>
                    </div>
                @else
                    <div class="text-center py-8">
                        <svg class="w-12 h-12 text-green-500 mx-auto mb-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"></path>
                        </svg>
                        <p class="text-gray-500 mb-0">No pending requests</p>
                    </div>
                @endif
            </div>
        </div>

        <!-- Recent Activity -->
        <div class="bg-white rounded-lg shadow-md">
            <div class="px-6 py-4 border-b border-gray-200">
                <h5 class="text-lg font-medium text-gray-900">Recent Activity</h5>
            </div>
            <div class="p-6">
                @if($recentRequests->count() > 0)
                    <div class="overflow-x-auto">
                        <table class="min-w-full divide-y divide-gray-200">
                            <thead>
                                <tr>
                                    <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Employee</th>
                                    <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Type</th>
                                    <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Status</th>
                                    <th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Updated</th>
                                </tr>
                            </thead>
                            <tbody class="divide-y divide-gray-200">
                                @foreach($recentRequests as $request)
                                    <tr>
                                        <td class="px-4 py-3 text-sm text-gray-900">{{ $request->user->name }}</td>
                                        <td class="px-4 py-3 text-sm text-gray-900">{{ $request->permissionType->name }}</td>
                                        <td class="px-4 py-3 text-sm">
                                            <span class="inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium 
                                                {{ 
                                                    $request->status->name === 'approved' ? 'bg-green-100 text-green-800' : 
                                                    ($request->status->name === 'rejected' ? 'bg-red-100 text-red-800' : 'bg-yellow-100 text-yellow-800') 
                                                }}">
                                                {{ ucfirst($request->status->name) }}
                                            </span>
                                        </td>
                                        <td class="px-4 py-3 text-sm text-gray-500">{{ $request->updated_at->diffForHumans() }}</td>
                                    </tr>
                                @endforeach
                            </tbody>
                        </table>
                    </div>
                @else
                    <div class="text-center py-8">
                        <svg class="w-12 h-12 text-gray-400 mx-auto mb-2" 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>
                        <p class="text-gray-500 mb-0">No recent activity</p>
                    </div>
                @endif
            </div>
        </div>
    </div>

    <div class="grid grid-cols-1 lg:grid-cols-2 gap-6">
        <!-- Permission Types Chart -->
        <div class="bg-white rounded-lg shadow-md">
            <div class="px-6 py-4 border-b border-gray-200">
                <h5 class="text-lg font-medium text-gray-900">Requests by Type</h5>
            </div>
            <div class="p-6">
                @if(count($permissionTypeLabels) > 0)
                    <canvas id="permissionTypesChart" width="400" height="300"></canvas>
                @else
                    <div class="text-center py-8">
                        <svg class="w-12 h-12 text-gray-400 mx-auto mb-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M11 3.055A9.001 9.001 0 1020.945 13H11V3.055z"></path>
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M20.488 9H15V3.512A9.025 9.025 0 0120.488 9z"></path>
                        </svg>
                        <p class="text-gray-500 mb-0">No data available</p>
                    </div>
                @endif
            </div>
        </div>

        <!-- Weekly Trend Chart -->
        <div class="bg-white rounded-lg shadow-md">
            <div class="px-6 py-4 border-b border-gray-200">
                <h5 class="text-lg font-medium text-gray-900">Weekly Trend</h5>
            </div>
            <div class="p-6">
                @if(count($weeklyData) > 0)
                    <canvas id="weeklyTrendChart" width="400" height="300"></canvas>
                @else
                    <div class="text-center py-8">
                        <svg class="w-12 h-12 text-gray-400 mx-auto mb-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 12l3-3 3 3 4-4M8 21l4-4 4 4M3 4h18M4 4h16v12a1 1 0 01-1 1H5a1 1 0 01-1-1V4z"></path>
                        </svg>
                        <p class="text-gray-500 mb-0">No data available</p>
                    </div>
                @endif
            </div>
        </div>
    </div>
</div>

<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<script>
// Permission Types Chart
@if(count($permissionTypeLabels) > 0)
const permissionTypesCtx = document.getElementById('permissionTypesChart').getContext('2d');
new Chart(permissionTypesCtx, {
    type: 'doughnut',
    data: {
        labels: @json($permissionTypeLabels),
        datasets: [{
            data: @json($permissionTypeData),
            backgroundColor: [
                '#2563eb', '#16a34a', '#eab308', '#dc2626', 
                '#7c3aed', '#ea580c', '#14b8a6', '#db2777'
            ],
            borderWidth: 2,
            borderColor: '#fff'
        }]
    },
    options: {
        responsive: true,
        maintainAspectRatio: false,
        plugins: {
            legend: {
                position: 'bottom'
            }
        }
    }
});
@endif

// Weekly Trend Chart
@if(count($weeklyData) > 0)
const weeklyTrendCtx = document.getElementById('weeklyTrendChart').getContext('2d');
new Chart(weeklyTrendCtx, {
    type: 'line',
    data: {
        labels: @json($weeklyLabels),
        datasets: [{
            label: 'Requests',
            data: @json($weeklyData),
            borderColor: '#2563eb',
            backgroundColor: 'rgba(37, 99, 235, 0.1)',
            borderWidth: 2,
            fill: true,
            tension: 0.4
        }]
    },
    options: {
        responsive: true,
        maintainAspectRatio: false,
        scales: {
            y: {
                beginAtZero: true,
                ticks: {
                    stepSize: 1
                }
            }
        },
        plugins: {
            legend: {
                display: false
            }
        }
    }
});
@endif
</script>
@endsection