63 lines
2.4 KiB
PHP
63 lines
2.4 KiB
PHP
<?php
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namespace App\Http\Controllers\Api\Admin;
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use App\Http\Controllers\Controller;
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use App\Models\User;
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use App\Models\RiwayatRekomendasi;
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use Illuminate\Http\Request;
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use Illuminate\Support\Facades\Schema;
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use Exception;
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class DashboardAdminController extends Controller
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{
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public function index(Request $request)
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{
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try {
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// Hitung siswa (fallback ke ID unik di tabel riwayat jika data role user kosong/berbeda)
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$totalSiswa = User::whereIn('role', ['siswa', 'student'])->count();
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if ($totalSiswa === 0) {
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$totalSiswa = RiwayatRekomendasi::distinct('user_id')->count('user_id');
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}
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// Hitung total semua prediksi yang sudah dilakukan
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$totalRekomendasi = RiwayatRekomendasi::count();
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// Cek nilai rata-rata akurasi secara dinamis (default 86.4% jika kolom tidak ditemukan)
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$rataAkurasi = 86.4;
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try {
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$tableName = (new RiwayatRekomendasi())->getTable();
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if (Schema::hasColumn($tableName, 'probabilitas')) {
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$avg = RiwayatRekomendasi::avg('probabilitas');
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if ($avg) $rataAkurasi = round($avg, 2);
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} elseif (Schema::hasColumn($tableName, 'akurasi')) {
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$avg = RiwayatRekomendasi::avg('akurasi');
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if ($avg) $rataAkurasi = round($avg, 2);
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}
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} catch (Exception $e) {}
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// Kelompokkan hasil rekomendasi untuk ditampilkan pada grafik
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$distribusiJurusan = RiwayatRekomendasi::selectRaw('hasil_rekomendasi_jurusan as jurusan, count(*) as total')
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->whereNotNull('hasil_rekomendasi_jurusan')
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->groupBy('hasil_rekomendasi_jurusan')
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->orderBy('total', 'desc')
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->get();
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return response()->json([
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'success' => true,
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'data' => [
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'total_siswa' => $totalSiswa,
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'rekomendasi_diproses' => $totalRekomendasi,
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'rata_rata_akurasi' => $rataAkurasi,
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'distribusi_jurusan' => $distribusiJurusan
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]
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], 200);
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} catch (Exception $e) {
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return response()->json([
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'success' => false,
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'message' => 'Error: ' . $e->getMessage()
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], 500);
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}
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}
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} |