@extends('admin.layouts.app')
@section('title','Admin Dashboard')
@section('page-title','Admin Dashboard')
@section('page-subtitle','System overview for the selected conference year')
@section('dashboard-active','active')
@section('content')

<form method="GET" class="mb-4">
    <div class="row g-2 align-items-end">
        <div class="col-md-4">
            <label class="form-label small">Filter by Conference</label>
            <select name="conference_id" class="form-select" onchange="this.form.submit()">
                <option value="">All Conferences</option>
                @foreach($conferences as $conf)
                    <option value="{{ $conf->id }}" @selected($conferenceId == $conf->id)>
                        {{ $conf->name }} ({{ $conf->conference_year }})
                    </option>
                @endforeach
            </select>
        </div>
    </div>
</form>

<div class='row g-3 mb-4'>
 <div class='col-md-3'><div class='cardx metric d-flex gap-3 align-items-center'><div class='metric-icon bg-success-subtle text-success'><i class='fa fa-users'></i></div><div><small class='muted'>Total Participants</small><h3>{{ number_format($stats['totalParticipants']) }}</h3></div></div></div>
 <div class='col-md-3'><div class='cardx metric d-flex gap-3 align-items-center'><div class='metric-icon bg-primary-subtle text-primary'><i class='fa fa-file-lines'></i></div><div><small class='muted'>Total Papers</small><h3>{{ number_format($stats['totalPapers']) }}</h3><span class='text-muted small'>Accepted: {{ $stats['acceptedPapers'] }}</span></div></div></div>
 <div class='col-md-3'><div class='cardx metric d-flex gap-3 align-items-center'><div class='metric-icon bg-warning-subtle text-warning'><i class='fa fa-wallet'></i></div><div><small class='muted'>Total Revenue</small><h3>₦{{ number_format($stats['totalRevenue'], 2) }}</h3><span class='text-muted small'>{{ $stats['successfulPayments'] }} successful</span></div></div></div>
 <div class='col-md-3'><div class='cardx metric d-flex gap-3 align-items-center'><div class='metric-icon bg-success-subtle text-success'><i class='fa fa-qrcode'></i></div><div><small class='muted'>Checked-in</small><h3>{{ number_format($stats['checkedIn']) }}</h3><span class='muted small'>@if($stats['totalParticipants'] > 0){{ round(($stats['checkedIn'] / $stats['totalParticipants']) * 100, 1) }}%@else 0%@endif</span></div></div></div>
</div>

<div class='row g-4'>
 <div class='col-lg-7'><div class='cardx p-4'><div class='d-flex justify-content-between mb-3'><h6 class='fw-bold'>Registration Trend</h6></div>
    @if($stats['registrationTrend']->isNotEmpty())
        <div class='chart-box d-flex align-items-end gap-2 justify-content-around'>
            @php $max = max(1, $stats['registrationTrend']->max('total')); @endphp
            @foreach($stats['registrationTrend'] as $point)
                <div class='bar' style='height:{{ max(20, ($point->total / $max) * 200) }}px' title='{{ $point->date }}: {{ $point->total }}'></div>
            @endforeach
        </div>
    @else
        <p class="text-muted mb-0">No registration data yet.</p>
    @endif
 </div></div>
 <div class='col-lg-5'><div class='cardx p-4'><h6 class='fw-bold mb-3'>Paper & Payment Summary</h6>
    <p>Pending papers: <strong>{{ $stats['pendingPapers'] }}</strong></p>
    <p>Rejected papers: <strong>{{ $stats['rejectedPapers'] }}</strong></p>
    <p>Pending payments: <strong>{{ $stats['pendingPayments'] }}</strong></p>
    <p>Certificate downloads: <strong>{{ $stats['certDownloads'] }}</strong></p>
    <p>Certificates emailed: <strong>{{ $stats['certEmails'] }}</strong></p>
    <hr>
    <p>Conference documents: <strong>{{ $stats['totalDocuments'] }}</strong> ({{ $stats['publishedDocuments'] }} published)</p>
    <p>Presentations uploaded: <strong>{{ $stats['totalPresentations'] }}</strong></p>
    <p>Pending presentation approvals: <strong>{{ $stats['pendingPresentationApprovals'] }}</strong></p>
    <p>Presenters yet to upload: <strong>{{ $stats['presentersWithoutUpload'] }}</strong></p>
    <p>Assigned speakers: <strong>{{ $stats['totalSpeakers'] }}</strong></p>
    <p>Speakers yet to upload: <strong>{{ $stats['speakersWithoutUpload'] }}</strong></p>
    <p>Pending speaker approvals: <strong>{{ $stats['pendingSpeakerApprovals'] }}</strong></p>
    @if($stats['mostDownloadedResource'])
        <p>Most downloaded resource: <strong>{{ Str::limit($stats['mostDownloadedResource']->title, 40) }}</strong> ({{ $stats['mostDownloadedResource']->download_count }} downloads)</p>
    @endif
    <hr>
    <p>Early bird registrations: <strong>{{ $stats['earlyBirdRegistrations'] }}</strong></p>
    <p>Regular registrations: <strong>{{ $stats['regularRegistrations'] }}</strong></p>
    <p>Late registrations: <strong>{{ $stats['lateRegistrations'] }}</strong></p>
    <p>Virtual participants: <strong>{{ $stats['virtualParticipants'] }}</strong> · Physical: <strong>{{ $stats['physicalParticipants'] }}</strong></p>
    <p>Spouse registrations: <strong>{{ $stats['spouseRegistrations'] }}</strong> · Foreign: <strong>{{ $stats['foreignParticipants'] }}</strong></p>
    <p>Virtual access messages sent: <strong>{{ $stats['virtualAccessSent'] }}</strong></p>
 </div></div>
 <div class='col-lg-12'><div class='cardx p-4'><h6 class='fw-bold'>Recent Activities</h6>
    <table class='table'><tbody>
        @forelse($stats['recentActivities'] as $activity)
            <tr><td>{{ $activity->action }} @if($activity->description)- {{ Str::limit($activity->description, 60) }}@endif</td><td>{{ \Carbon\Carbon::parse($activity->created_at)->diffForHumans() }}</td></tr>
        @empty
            <tr><td colspan="2" class="text-muted">No recent activity.</td></tr>
        @endforelse
    </tbody></table>
 </div></div>
</div>

@endsection