feat: per-program statistics dashboard (Fasa 9)

- StatisticsController: attendance by session/source, cert status, response rate, question averages
- Statistics export as CSV
- Chart.js visualisations: bar (session), doughnut (source), progress bars (cert status, ratings)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Http/Controllers/Admin/StatisticsController.php

@@ -3,9 +3,129 @@
 namespace App\Http\Controllers\Admin;
 
 use App\Http\Controllers\Controller;
+use App\Models\Program;
+use App\Models\Attendance;
+use App\Models\Certificate;
+use App\Models\QuestionnaireAnswer;
+use App\Models\QuestionnaireQuestion;
+use App\Models\QuestionnaireResponse;
 use Illuminate\Http\Request;
+use Illuminate\Http\Response;
+use Illuminate\View\View;
 
 class StatisticsController extends Controller
 {
-    //
+    public function show(Program $program): View
+    {
+        $program->load(['attendances.participant', 'questionnaire.questionnaireSet.questions']);
+
+        // Attendance by session
+        $bySession = $program->attendances()
+            ->selectRaw('attendance_session, COUNT(*) as total')
+            ->groupBy('attendance_session')
+            ->pluck('total', 'attendance_session')
+            ->toArray();
+
+        // Attendance by source
+        $bySource = $program->attendances()
+            ->selectRaw('source, COUNT(*) as total')
+            ->groupBy('source')
+            ->pluck('total', 'source')
+            ->toArray();
+
+        // Certificate status breakdown
+        $certStats = $program->certificates()
+            ->selectRaw('status, COUNT(*) as total')
+            ->groupBy('status')
+            ->pluck('total', 'status')
+            ->toArray();
+
+        // Response rate
+        $pq = $program->questionnaire;
+        $responseRate = null;
+        $questionStats = [];
+
+        if ($pq && $pq->is_confirmed) {
+            $totalAttended = $program->attendances()->count();
+            $totalResponses = QuestionnaireResponse::where('program_id', $program->id)->count();
+            $responseRate = $totalAttended > 0 ? round($totalResponses / $totalAttended * 100) : 0;
+
+            // Rating question averages
+            $questions = $pq->questionnaireSet->questions ?? collect();
+            foreach ($questions as $q) {
+                if ($q->question_type === 'rating') {
+                    $answers = QuestionnaireAnswer::where('questionnaire_question_id', $q->id)
+                        ->pluck('answer_value');
+                    $values = $answers->map(fn($v) => is_array($v) ? (int)($v[0] ?? 0) : (int)$v);
+                    $questionStats[] = [
+                        'id'      => $q->id,
+                        'text'    => $q->question_text,
+                        'type'    => 'rating',
+                        'average' => $values->count() > 0 ? round($values->avg(), 2) : null,
+                        'count'   => $values->count(),
+                    ];
+                } elseif (in_array($q->question_type, ['single_choice', 'multiple_choice'])) {
+                    $answers = QuestionnaireAnswer::where('questionnaire_question_id', $q->id)
+                        ->pluck('answer_value');
+                    $counts = [];
+                    foreach ($answers as $val) {
+                        $items = is_array($val) ? $val : [$val];
+                        foreach ($items as $item) {
+                            $counts[$item] = ($counts[$item] ?? 0) + 1;
+                        }
+                    }
+                    $questionStats[] = [
+                        'id'      => $q->id,
+                        'text'    => $q->question_text,
+                        'type'    => $q->question_type,
+                        'options' => $q->options_json ?? [],
+                        'counts'  => $counts,
+                        'total'   => $answers->count(),
+                    ];
+                }
+            }
+        }
+
+        $summary = [
+            'total_attendances'    => $program->attendances()->count(),
+            'pre_registered'       => $program->attendances()->where('source', 'pre_registered_staff')->count(),
+            'walk_in'              => $program->attendances()->where('source', 'walk_in_external')->count(),
+            'total_certificates'   => $program->certificates()->count(),
+            'generated_certs'      => $program->certificates()->whereIn('status', ['generated', 'emailed', 'downloaded'])->count(),
+            'downloaded_certs'     => $program->certificates()->where('status', 'downloaded')->count(),
+            'total_responses'      => QuestionnaireResponse::where('program_id', $program->id)->count(),
+        ];
+
+        return view('admin.programs.statistics.show', compact(
+            'program', 'summary', 'bySession', 'bySource',
+            'certStats', 'responseRate', 'questionStats'
+        ));
+    }
+
+    public function export(Program $program): Response
+    {
+        $rows = $program->attendances()
+            ->with('participant')
+            ->get()
+            ->map(fn($a) => [
+                $a->participant->name,
+                $a->participant->agency ?: '',
+                $a->attendance_session,
+                $a->source,
+                $a->checked_in_at->format('d/m/Y H:i'),
+            ]);
+
+        $csv = "\xEF\xBB\xBF";
+        $csv .= implode(',', ['Nama', 'Agensi', 'Sesi', 'Sumber', 'Masa Check-In']) . "\n";
+        foreach ($rows as $row) {
+            $csv .= implode(',', array_map(fn($v) => '"' . str_replace('"', '""', $v) . '"', $row)) . "\n";
+        }
+
+        $filename = 'statistik-' . str($program->title)->slug() . '-' . now()->format('Ymd') . '.csv';
+
+        return response($csv, 200, [
+            'Content-Type'        => 'text/csv; charset=UTF-8',
+            'Content-Disposition' => 'attachment; filename="' . $filename . '"',
+        ]);
+    }
 }

resources/views/admin/programs/statistics/show.blade.php

@@ -0,0 +1,218 @@
+@extends('layouts.admin')
+
+@section('title', 'Statistik — ' . $program->title)
+@section('header', 'Statistik Program')
+
+@section('breadcrumb')
+<li class="breadcrumb-item"><a href="{{ route('admin.programs.index') }}">Program</a></li>
+<li class="breadcrumb-item"><a href="{{ route('admin.programs.show', $program) }}">{{ Str::limit($program->title, 30) }}</a></li>
+<li class="breadcrumb-item active">Statistik</li>
+@endsection
+
+@section('header-actions')
+<div class="d-flex gap-2">
+    <a href="{{ route('admin.programs.statistics.export', $program) }}" class="btn btn-sm btn-outline-secondary">
+        <i class="bi bi-download me-1"></i> Export CSV
+    </a>
+    <a href="{{ route('admin.programs.show', $program) }}#tab-statistics" class="btn btn-sm btn-outline-secondary">
+        <i class="bi bi-arrow-left me-1"></i> Kembali
+    </a>
+</div>
+@endsection
+
+@section('content')
+
+{{-- Summary Cards --}}
+<div class="row g-3 mb-4">
+    <div class="col-6 col-md-3">
+        <div class="card border-0 bg-primary bg-opacity-10 text-center p-3">
+            <div class="fs-2 fw-bold text-primary">{{ $summary['total_attendances'] }}</div>
+            <div class="small text-muted">Jumlah Hadir</div>
+        </div>
+    </div>
+    <div class="col-6 col-md-3">
+        <div class="card border-0 bg-success bg-opacity-10 text-center p-3">
+            <div class="fs-2 fw-bold text-success">{{ $summary['generated_certs'] }}</div>
+            <div class="small text-muted">Sijil Dijana</div>
+        </div>
+    </div>
+    <div class="col-6 col-md-3">
+        <div class="card border-0 bg-warning bg-opacity-10 text-center p-3">
+            <div class="fs-2 fw-bold text-warning">{{ $summary['downloaded_certs'] }}</div>
+            <div class="small text-muted">Sijil Dimuat Turun</div>
+        </div>
+    </div>
+    <div class="col-6 col-md-3">
+        <div class="card border-0 bg-info bg-opacity-10 text-center p-3">
+            <div class="fs-2 fw-bold text-info">{{ $summary['total_responses'] }}</div>
+            <div class="small text-muted">Respons Soalselidik</div>
+        </div>
+    </div>
+</div>
+
+<div class="row g-4">
+
+    {{-- Attendance by Session --}}
+    <div class="col-md-6">
+        <div class="card border-0 shadow-sm h-100">
+            <div class="card-header bg-white py-3">
+                <h6 class="mb-0 fw-semibold"><i class="bi bi-bar-chart me-2 text-primary"></i>Kehadiran Mengikut Sesi</h6>
+            </div>
+            <div class="card-body">
+                @if(! empty($bySession))
+                <canvas id="sessionChart" height="200"></canvas>
+                @else
+                <div class="text-center py-4 text-muted small">Tiada data kehadiran.</div>
+                @endif
+            </div>
+        </div>
+    </div>
+
+    {{-- Attendance by Source --}}
+    <div class="col-md-6">
+        <div class="card border-0 shadow-sm h-100">
+            <div class="card-header bg-white py-3">
+                <h6 class="mb-0 fw-semibold"><i class="bi bi-pie-chart me-2 text-success"></i>Kehadiran Mengikut Jenis</h6>
+            </div>
+            <div class="card-body d-flex align-items-center justify-content-center">
+                @if(! empty($bySource))
+                <canvas id="sourceChart" height="200"></canvas>
+                @else
+                <div class="text-center py-4 text-muted small">Tiada data kehadiran.</div>
+                @endif
+            </div>
+        </div>
+    </div>
+
+    {{-- Certificate Status --}}
+    <div class="col-md-6">
+        <div class="card border-0 shadow-sm h-100">
+            <div class="card-header bg-white py-3">
+                <h6 class="mb-0 fw-semibold"><i class="bi bi-award me-2 text-warning"></i>Status Sijil</h6>
+            </div>
+            <div class="card-body">
+                @if(! empty($certStats))
+                <table class="table table-sm">
+                    @php
+                        $labels = ['pending' => 'Menunggu', 'generating' => 'Sedang Jana', 'generated' => 'Dijana', 'emailed' => 'Diemailkan', 'downloaded' => 'Dimuat Turun', 'failed' => 'Gagal'];
+                        $colors = ['pending' => 'warning', 'generating' => 'secondary', 'generated' => 'success', 'emailed' => 'info', 'downloaded' => 'primary', 'failed' => 'danger'];
+                    @endphp
+                    @foreach($certStats as $status => $count)
+                    <tr>
+                        <td><span class="badge bg-{{ $colors[$status] ?? 'secondary' }}">{{ $labels[$status] ?? $status }}</span></td>
+                        <td class="fw-bold">{{ $count }}</td>
+                        <td class="w-50">
+                            <div class="progress" style="height:8px;">
+                                <div class="progress-bar bg-{{ $colors[$status] ?? 'secondary' }}"
+                                     style="width:{{ $summary['total_certificates'] > 0 ? round($count / $summary['total_certificates'] * 100) : 0 }}%"></div>
+                            </div>
+                        </td>
+                    </tr>
+                    @endforeach
+                </table>
+                @else
+                <div class="text-center py-4 text-muted small">Tiada sijil dijana lagi.</div>
+                @endif
+            </div>
+        </div>
+    </div>
+
+    {{-- Response Rate --}}
+    @if($responseRate !== null)
+    <div class="col-md-6">
+        <div class="card border-0 shadow-sm h-100">
+            <div class="card-header bg-white py-3">
+                <h6 class="mb-0 fw-semibold"><i class="bi bi-clipboard2-check me-2 text-info"></i>Kadar Respons Soalselidik</h6>
+            </div>
+            <div class="card-body text-center py-4">
+                <div class="display-4 fw-bold text-primary mb-1">{{ $responseRate }}%</div>
+                <div class="text-muted small">{{ $summary['total_responses'] }} daripada {{ $summary['total_attendances'] }} peserta hadir</div>
+                <div class="progress mt-3" style="height:12px;">
+                    <div class="progress-bar bg-primary" style="width:{{ $responseRate }}%"></div>
+                </div>
+            </div>
+        </div>
+    </div>
+    @endif
+
+    {{-- Question Stats --}}
+    @foreach($questionStats as $qs)
+    <div class="col-md-6">
+        <div class="card border-0 shadow-sm">
+            <div class="card-header bg-white py-3">
+                <h6 class="mb-0 fw-semibold small">{{ $qs['text'] }}</h6>
+            </div>
+            <div class="card-body">
+                @if($qs['type'] === 'rating')
+                <div class="text-center">
+                    <div class="display-6 fw-bold text-warning">{{ $qs['average'] ?? '—' }}</div>
+                    <div class="text-muted small">Purata daripada {{ $qs['count'] }} respons</div>
+                    @php $pct = $qs['average'] ? round($qs['average'] / 5 * 100) : 0; @endphp
+                    <div class="progress mt-2" style="height:10px;">
+                        <div class="progress-bar bg-warning" style="width:{{ $pct }}%"></div>
+                    </div>
+                    <div class="text-muted" style="font-size:0.75rem;">{{ $pct }}% daripada 5</div>
+                </div>
+                @elseif(in_array($qs['type'], ['single_choice', 'multiple_choice']))
+                <table class="table table-sm mb-0">
+                    @foreach($qs['options'] as $opt)
+                    @php $c = $qs['counts'][$opt] ?? 0; $pct = $qs['total'] > 0 ? round($c / $qs['total'] * 100) : 0; @endphp
+                    <tr>
+                        <td class="small text-truncate" style="max-width:180px;">{{ $opt }}</td>
+                        <td class="text-end fw-bold small">{{ $c }}</td>
+                        <td class="w-40">
+                            <div class="progress" style="height:8px;">
+                                <div class="progress-bar bg-info" style="width:{{ $pct }}%"></div>
+                            </div>
+                        </td>
+                        <td class="text-end small text-muted">{{ $pct }}%</td>
+                    </tr>
+                    @endforeach
+                </table>
+                @endif
+            </div>
+        </div>
+    </div>
+    @endforeach
+
+</div>
+
+@endsection
+
+@push('scripts')
+<script>
+@if(! empty($bySession))
+new Chart(document.getElementById('sessionChart'), {
+    type: 'bar',
+    data: {
+        labels: @json(array_map('ucfirst', array_keys($bySession))),
+        datasets: [{
+            label: 'Kehadiran',
+            data: @json(array_values($bySession)),
+            backgroundColor: 'rgba(26,86,160,0.7)',
+            borderRadius: 4,
+        }]
+    },
+    options: { responsive: true, plugins: { legend: { display: false } }, scales: { y: { beginAtZero: true, ticks: { stepSize: 1 } } } }
+});
+@endif
+
+@if(! empty($bySource))
+const sourceLabels = {
+    'pre_registered_staff': 'Kakitangan',
+    'walk_in_external': 'Orang Luar',
+};
+new Chart(document.getElementById('sourceChart'), {
+    type: 'doughnut',
+    data: {
+        labels: @json(array_map(fn($k) => $sourceLabels[$k] ?? $k, array_keys($bySource))),
+        datasets: [{
+            data: @json(array_values($bySource)),
+            backgroundColor: ['rgba(26,86,160,0.7)', 'rgba(34,197,94,0.7)'],
+        }]
+    },
+    options: { responsive: true, plugins: { legend: { position: 'bottom' } } }
+});
+@endif
+</script>
+@endpush