@extends('bk.layouts.app')

@section('title', 'Dashboard')

@section('content')
    <div class="mb-6">
        <h2 class="text-2xl font-bold text-bk">📊 Dashboard Guru BK</h2>
        <p class="text-sm text-gray-500 mt-1">Selamat datang, {{ Auth::user()->name }}</p>
    </div>

    <!-- Statistics Cards -->
    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4 mb-8">
        <div class="stat-card bg-white rounded-lg shadow p-6 border-t-4 border-teal-500">
            <p class="text-gray-600 text-sm font-semibold">👥 Total Siswa</p>
            <p class="text-3xl font-bold text-bk mt-2">{{ $totalSiswa }}</p>
        </div>
        <div class="stat-card bg-white rounded-lg shadow p-6 border-t-4 border-yellow-400">
            <p class="text-gray-600 text-sm font-semibold">🎯 Total Rekomendasi</p>
            <p class="text-3xl font-bold mt-2" style="color: #EA580C;">{{ $totalRekomendasi }}</p>
        </div>
        <div class="stat-card bg-white rounded-lg shadow p-6 border-t-4 border-blue-400">
            <p class="text-gray-600 text-sm font-semibold">💬 Chat History</p>
            <p class="text-3xl font-bold text-blue-600 mt-2">{{ $totalChatHistory }}</p>
        </div>
        <div class="stat-card bg-white rounded-lg shadow p-6 border-t-4 border-green-400">
            <p class="text-gray-600 text-sm font-semibold">🎓 Jurusan Tersedia</p>
            <p class="text-3xl font-bold text-green-600 mt-2">{{ $totalJurusan }}</p>
        </div>
    </div>

    <!-- Charts Section -->
    <div class="grid grid-cols-1 lg:grid-cols-2 gap-6 mb-6">
        <!-- Rekomendasi Distribution Chart -->
        <div class="bg-white rounded-lg shadow p-6 border-l-4 border-purple-400">
            <h3 class="text-lg font-bold text-bk mb-4">📊 Distribusi Rekomendasi per Jurusan</h3>
            <div style="position: relative; height: 300px;">
                <canvas id="chartRecommendations"></canvas>
            </div>
        </div>

        <!-- Kelompok Distribution Chart -->
        <div class="bg-white rounded-lg shadow p-6 border-l-4 border-indigo-400">
            <h3 class="text-lg font-bold text-bk mb-4">📈 Distribusi Siswa per Kelompok</h3>
            <div style="position: relative; height: 300px;">
                <canvas id="chartKelompok"></canvas>
            </div>
        </div>
    </div>

    <!-- Kelompok Distribution & Top Majors -->
    <div class="grid grid-cols-1 lg:grid-cols-2 gap-6 mb-6">
        <!-- Kelompok Chart -->
        <div class="bg-white rounded-lg shadow p-6 border-l-4 border-teal-500">
            <h3 class="text-lg font-bold text-bk mb-4">📊 Siswa per Kelompok</h3>
            <div style="position: relative; height: 250px;">
                <canvas id="chartKelompokPie"></canvas>
            </div>
        </div>

        <!-- Top Recommended Majors Chart -->
        <div class="bg-white rounded-lg shadow p-6 border-l-4 border-green-400">
            <h3 class="text-lg font-bold text-bk mb-4">🎯 Jurusan Terpopuler</h3>
            <div style="position: relative; height: 250px;">
                <canvas id="chartTopMajors"></canvas>
            </div>
        </div>
    </div>

    <!-- Recent Students -->
    <div class="bg-white rounded-lg shadow p-6 mb-6 border-l-4 border-yellow-400">
        <h3 class="text-lg font-bold text-bk mb-4">👥 Siswa Terbaru</h3>
        @if($recentStudents->isNotEmpty())
            <div class="overflow-x-auto">
                <table class="w-full text-sm">
                    <thead class="border-b-2 border-teal-500">
                        <tr>
                            <th class="text-left px-4 py-2 font-bold text-bk">Nama</th>
                            <th class="text-center px-4 py-2 font-bold text-bk">NIS</th>
                            <th class="text-center px-4 py-2 font-bold text-bk">Kelompok</th>
                            <th class="text-center px-4 py-2 font-bold text-bk">Aksi</th>
                        </tr>
                    </thead>
                    <tbody class="divide-y">
                        @foreach($recentStudents as $student)
                            <tr class="hover:bg-gray-50">
                                <td class="px-4 py-2 font-semibold text-gray-800">{{ $student->name }}</td>
                                <td class="px-4 py-2 text-center text-gray-600">{{ $student->nis ?? '-' }}</td>
                                <td class="px-4 py-2 text-center">
                                    <span class="px-2 py-1 rounded text-xs font-bold" style="{{ $student->kelompok_asal == 'IPA' ? 'background-color: #E0F2FE; color: #0369A1;' : 'background-color: #FEF3C7; color: #92400E;' }}">
                                        {{ $student->kelompok_asal ?? '-' }}
                                    </span>
                                </td>
                                <td class="px-4 py-2 text-center">
                                    <a href="{{ route('bk.student.detail', $student->id) }}" class="text-teal-600 hover:text-teal-800 font-semibold text-xs">👁 Lihat</a>
                                </td>
                            </tr>
                        @endforeach
                    </tbody>
                </table>
            </div>
        @else
            <p class="text-gray-500 text-sm">Belum ada siswa terdaftar</p>
        @endif
    </div>

    <!-- Recent Recommendations -->
    <div class="bg-white rounded-lg shadow p-6 border-l-4 border-blue-400">
        <h3 class="text-lg font-bold text-bk mb-4">🎯 Rekomendasi Terbaru</h3>
        @if($recentRecommendations->isNotEmpty())
            <div class="overflow-x-auto">
                <table class="w-full text-sm">
                    <thead class="border-b-2 border-teal-500">
                        <tr>
                            <th class="text-left px-4 py-2 font-bold text-bk">Siswa</th>
                            <th class="text-left px-4 py-2 font-bold text-bk">Top Rekomendasi</th>
                            <th class="text-center px-4 py-2 font-bold text-bk">Skor</th>
                            <th class="text-center px-4 py-2 font-bold text-bk">Tanggal</th>
                        </tr>
                    </thead>
                    <tbody class="divide-y">
                        @foreach($recentRecommendations as $rec)
                            @php
                                $topJurusan = $rec->hasil_rekomendasi[0]['jurusan'] ?? '-';
                                $skorRaw = $rec->hasil_rekomendasi[0]['skor'] ?? 0;
                                $topSkor = round(($skorRaw > 1 ? $skorRaw : $skorRaw * 100), 1);
                            @endphp
                            <tr class="hover:bg-gray-50">
                                <td class="px-4 py-2 font-semibold text-gray-800">{{ $rec->user->name ?? 'Pengguna Dihapus' }}</td>
                                <td class="px-4 py-2 text-gray-700">{{ $topJurusan }}</td>
                                <td class="px-4 py-2 text-center">
                                    <span class="px-2 py-1 rounded bg-green-100 text-green-800 font-bold">{{ $topSkor }}%</span>
                                </td>
                                <td class="px-4 py-2 text-center text-gray-600">{{ $rec->created_at->format('d M Y') }}</td>
                            </tr>
                        @endforeach
                    </tbody>
                </table>
            </div>
        @else
            <p class="text-gray-500 text-sm">Belum ada rekomendasi</p>
        @endif
    </div>
@endsection

@section('scripts')
    <script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.0/dist/chart.umd.js"></script>
    <script>
        // Chart 1: Rekomendasi Distribution
        const chartRecommendationsCtx = document.getElementById('chartRecommendations').getContext('2d');
        const chartRecommendations = new Chart(chartRecommendationsCtx, {
            type: 'doughnut',
            data: {
                labels: @json($chartMajorNames),
                datasets: [{
                    data: @json($chartMajorCounts),
                    backgroundColor: [
                        '#FF6384', '#36A2EB', '#FFCE56', '#4BC0C0', '#9966FF',
                        '#FF9F40', '#FF6384', '#C9CBCF', '#4BC0C0'
                    ],
                    borderColor: '#fff',
                    borderWidth: 2
                }]
            },
            options: {
                responsive: true,
                maintainAspectRatio: false,
                plugins: {
                    legend: {
                        position: 'bottom',
                        labels: {
                            font: { size: 11 },
                            padding: 10
                        }
                    }
                }
            }
        });

        // Chart 2: Kelompok Distribution Bar
        const chartKelompokCtx = document.getElementById('chartKelompok').getContext('2d');
        const chartKelompok = new Chart(chartKelompokCtx, {
            type: 'bar',
            data: {
                labels: @json($chartKelompokNames),
                datasets: [{
                    label: 'Jumlah Siswa',
                    data: @json($chartKelompokCounts),
                    backgroundColor: ['#0369A1', '#D97706'],
                    borderColor: ['#0369A1', '#D97706'],
                    borderWidth: 1
                }]
            },
            options: {
                responsive: true,
                maintainAspectRatio: false,
                plugins: {
                    legend: {
                        display: true,
                        labels: {
                            font: { size: 11 }
                        }
                    }
                },
                scales: {
                    y: {
                        beginAtZero: true,
                        ticks: {
                            font: { size: 10 }
                        }
                    }
                }
            }
        });

        // Chart 3: Kelompok Pie Chart
        const chartKelompokPieCtx = document.getElementById('chartKelompokPie').getContext('2d');
        const chartKelompokPie = new Chart(chartKelompokPieCtx, {
            type: 'pie',
            data: {
                labels: @json($chartKelompokNames),
                datasets: [{
                    data: @json($chartKelompokCounts),
                    backgroundColor: ['#0369A1', '#D97706'],
                    borderColor: '#fff',
                    borderWidth: 2
                }]
            },
            options: {
                responsive: true,
                maintainAspectRatio: false,
                plugins: {
                    legend: {
                        position: 'bottom',
                        labels: {
                            font: { size: 11 },
                            padding: 10
                        }
                    }
                }
            }
        });

        // Chart 4: Top Majors Horizontal Bar Chart
        const chartTopMajorsCtx = document.getElementById('chartTopMajors').getContext('2d');
        const chartTopMajors = new Chart(chartTopMajorsCtx, {
            type: 'bar',
            data: {
                labels: @json($topMajorsChart),
                datasets: [{
                    label: 'Jumlah Rekomendasi',
                    data: @json($topMajorsCounts),
                    backgroundColor: '#36A2EB',
                    borderColor: '#36A2EB',
                    borderWidth: 1
                }]
            },
            options: {
                indexAxis: 'y',
                responsive: true,
                maintainAspectRatio: false,
                plugins: {
                    legend: {
                        display: true,
                        labels: {
                            font: { size: 11 }
                        }
                    }
                },
                scales: {
                    x: {
                        beginAtZero: true,
                        ticks: {
                            font: { size: 10 }
                        }
                    }
                }
            }
        });
    </script>
@endsection