@extends('layouts.admin')

@section('title', 'User Statistics')

@section('content')
<div class="container-fluid">
    <!-- Page Header -->
    <div class="d-flex justify-content-between align-items-center mb-4">
        <div>
            <h1 class="h3 mb-0 text-gray-800">User Statistics</h1>
            <p class="text-muted">Comprehensive user analytics and insights</p>
        </div>
        <div>
            <a href="{{ route('admin.users.index') }}" class="btn btn-outline-secondary">
                <i class="fas fa-arrow-left me-2"></i>Back to Users
            </a>
        </div>
    </div>

    <!-- Summary Statistics -->
    <div class="row mb-4">
        <div class="col-xl-3 col-md-6 mb-4">
            <div class="card border-left-primary shadow h-100 py-2">
                <div class="card-body">
                    <div class="row no-gutters align-items-center">
                        <div class="col mr-2">
                            <div class="text-xs font-weight-bold text-primary text-uppercase mb-1">
                                Total Users
                            </div>
                            <div class="h5 mb-0 font-weight-bold text-gray-800">
                                {{ $stats['total_users'] }}
                            </div>
                        </div>
                        <div class="col-auto">
                            <i class="fas fa-users fa-2x text-gray-300"></i>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <div class="col-xl-3 col-md-6 mb-4">
            <div class="card border-left-success shadow h-100 py-2">
                <div class="card-body">
                    <div class="row no-gutters align-items-center">
                        <div class="col mr-2">
                            <div class="text-xs font-weight-bold text-success text-uppercase mb-1">
                                Active Last 30 Days
                            </div>
                            <div class="h5 mb-0 font-weight-bold text-gray-800">
                                {{ $stats['active_users_last_30_days'] }}
                            </div>
                        </div>
                        <div class="col-auto">
                            <i class="fas fa-user-check fa-2x text-gray-300"></i>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <div class="col-xl-3 col-md-6 mb-4">
            <div class="card border-left-info shadow h-100 py-2">
                <div class="card-body">
                    <div class="row no-gutters align-items-center">
                        <div class="col mr-2">
                            <div class="text-xs font-weight-bold text-info text-uppercase mb-1">
                                With Applications
                            </div>
                            <div class="h5 mb-0 font-weight-bold text-gray-800">
                                {{ $stats['users_with_applications'] }}
                            </div>
                        </div>
                        <div class="col-auto">
                            <i class="fas fa-file-alt fa-2x text-gray-300"></i>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <div class="col-xl-3 col-md-6 mb-4">
            <div class="card border-left-warning shadow h-100 py-2">
                <div class="card-body">
                    <div class="row no-gutters align-items-center">
                        <div class="col mr-2">
                            <div class="text-xs font-weight-bold text-warning text-uppercase mb-1">
                                Without Applications
                            </div>
                            <div class="h5 mb-0 font-weight-bold text-gray-800">
                                {{ $stats['users_without_applications'] }}
                            </div>
                        </div>
                        <div class="col-auto">
                            <i class="fas fa-user-times fa-2x text-gray-300"></i>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Charts and Breakdowns -->
    <div class="row">
        <!-- Users by Role -->
        <div class="col-lg-6">
            <div class="card shadow mb-4">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-primary">Users by Role</h6>
                </div>
                <div class="card-body">
                    @if($stats['by_role']->count() > 0)
                        @foreach($stats['by_role'] as $role => $count)
                        <div class="d-flex justify-content-between align-items-center mb-3">
                            <div>
                                <span class="badge bg-{{ $role === 'admin' ? 'danger' : 'primary' }} me-2">
                                    {{ ucfirst($role) }}
                                </span>
                            </div>
                            <div>
                                <span class="h5 mb-0 text-gray-800">{{ $count }}</span>
                                <span class="text-muted small">
                                    ({{ $stats['total_users'] > 0 ? round(($count / $stats['total_users']) * 100, 1) : 0 }}%)
                                </span>
                            </div>
                        </div>
                        @endforeach
                    @else
                        <p class="text-muted">No role data available.</p>
                    @endif
                </div>
            </div>
        </div>

        <!-- Users by Status -->
        <div class="col-lg-6">
            <div class="card shadow mb-4">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-success">Users by Status</h6>
                </div>
                <div class="card-body">
                    @if($stats['by_status']->count() > 0)
                        @foreach($stats['by_status'] as $status => $count)
                        <div class="d-flex justify-content-between align-items-center mb-3">
                            <div>
                                @php
                                    $statusColors = [
                                        'active' => 'success',
                                        'inactive' => 'secondary',
                                        'suspended' => 'warning'
                                    ];
                                    $statusColor = $statusColors[$status] ?? 'secondary';
                                @endphp
                                <span class="badge bg-{{ $statusColor }} me-2">
                                    {{ ucfirst($status) }}
                                </span>
                            </div>
                            <div>
                                <span class="h5 mb-0 text-gray-800">{{ $count }}</span>
                                <span class="text-muted small">
                                    ({{ $stats['total_users'] > 0 ? round(($count / $stats['total_users']) * 100, 1) : 0 }}%)
                                </span>
                            </div>
                        </div>
                        @endforeach
                    @else
                        <p class="text-muted">No status data available.</p>
                    @endif
                </div>
            </div>
        </div>
    </div>

    <!-- Registration Trends -->
    <div class="row">
        <div class="col-lg-12">
            <div class="card shadow mb-4">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-info">Registration Trends</h6>
                </div>
                <div class="card-body">
                    @if($stats['registration_trends']->count() > 0)
                        <div class="table-responsive">
                            <table class="table table-bordered">
                                <thead>
                                    <tr>
                                        <th>Month</th>
                                        <th>New Registrations</th>
                                        <th>Percentage of Total</th>
                                        <th>Growth</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    @php $previousCount = 0; @endphp
                                    @foreach($stats['registration_trends'] as $month => $count)
                                    <tr>
                                        <td>{{ \Carbon\Carbon::createFromFormat('Y-m', $month)->format('F Y') }}</td>
                                        <td>
                                            <span class="badge bg-primary">{{ $count }}</span>
                                        </td>
                                        <td>
                                            {{ $stats['total_users'] > 0 ? round(($count / $stats['total_users']) * 100, 1) : 0 }}%
                                        </td>
                                        <td>
                                            @if($previousCount > 0)
                                                @php
                                                    $growth = (($count - $previousCount) / $previousCount) * 100;
                                                    $growthColor = $growth >= 0 ? 'success' : 'danger';
                                                    $growthIcon = $growth >= 0 ? 'arrow-up' : 'arrow-down';
                                                @endphp
                                                <span class="text-{{ $growthColor }}">
                                                    <i class="fas fa-{{ $growthIcon }} me-1"></i>
                                                    {{ abs(round($growth, 1)) }}%
                                                </span>
                                            @else
                                                <span class="text-muted">-</span>
                                            @endif
                                        </td>
                                    </tr>
                                    @php $previousCount = $count; @endphp
                                    @endforeach
                                </tbody>
                            </table>
                        </div>
                    @else
                        <div class="text-center py-4">
                            <i class="fas fa-chart-line fa-3x text-muted mb-3"></i>
                            <h5 class="text-muted">No Registration Data</h5>
                            <p class="text-muted">No registration trends data available.</p>
                        </div>
                    @endif
                </div>
            </div>
        </div>
    </div>

    <!-- Engagement Metrics -->
    <div class="row">
        <div class="col-lg-6">
            <div class="card shadow mb-4">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-warning">User Engagement</h6>
                </div>
                <div class="card-body">
                    <div class="mb-3">
                        <div class="d-flex justify-content-between align-items-center">
                            <span>Users with Applications:</span>
                            <div>
                                <span class="badge bg-success">{{ $stats['users_with_applications'] }}</span>
                                <span class="text-muted small">
                                    ({{ $stats['total_users'] > 0 ? round(($stats['users_with_applications'] / $stats['total_users']) * 100, 1) : 0 }}%)
                                </span>
                            </div>
                        </div>
                    </div>
                    
                    <div class="mb-3">
                        <div class="d-flex justify-content-between align-items-center">
                            <span>Users without Applications:</span>
                            <div>
                                <span class="badge bg-warning">{{ $stats['users_without_applications'] }}</span>
                                <span class="text-muted small">
                                    ({{ $stats['total_users'] > 0 ? round(($stats['users_without_applications'] / $stats['total_users']) * 100, 1) : 0 }}%)
                                </span>
                            </div>
                        </div>
                    </div>
                    
                    <div class="mb-3">
                        <div class="d-flex justify-content-between align-items-center">
                            <span>Active in Last 30 Days:</span>
                            <div>
                                <span class="badge bg-info">{{ $stats['active_users_last_30_days'] }}</span>
                                <span class="text-muted small">
                                    ({{ $stats['total_users'] > 0 ? round(($stats['active_users_last_30_days'] / $stats['total_users']) * 100, 1) : 0 }}%)
                                </span>
                            </div>
                        </div>
                    </div>
                    
                    @php
                        $engagementRate = $stats['total_users'] > 0 
                            ? round(($stats['users_with_applications'] / $stats['total_users']) * 100, 1) 
                            : 0;
                        $engagementColor = $engagementRate >= 50 ? 'success' : ($engagementRate >= 25 ? 'warning' : 'danger');
                    @endphp
                    <hr>
                    <div class="text-center">
                        <div class="h4 mb-0 text-{{ $engagementColor }}">{{ $engagementRate }}%</div>
                        <div class="text-xs text-muted">Overall Engagement Rate</div>
                    </div>
                </div>
            </div>
        </div>

        <div class="col-lg-6">
            <div class="card shadow mb-4">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-secondary">Quick Actions</h6>
                </div>
                <div class="card-body">
                    <div class="d-grid gap-2">
                        <a href="{{ route('admin.users.index') }}" class="btn btn-primary">
                            <i class="fas fa-users me-2"></i>View All Users
                        </a>
                        
                        <a href="{{ route('admin.users.create') }}" class="btn btn-success">
                            <i class="fas fa-plus me-2"></i>Create New User
                        </a>
                        
                        <a href="{{ route('admin.users.index', ['status' => 'active']) }}" class="btn btn-info">
                            <i class="fas fa-user-check me-2"></i>View Active Users
                        </a>
                        
                        <a href="{{ route('admin.users.index', ['role' => 'applicant']) }}" class="btn btn-warning">
                            <i class="fas fa-user-graduate me-2"></i>View Applicants
                        </a>
                        
                        <a href="{{ route('admin.users.index', ['role' => 'admin']) }}" class="btn btn-danger">
                            <i class="fas fa-user-shield me-2"></i>View Administrators
                        </a>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
@endsection