<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Auth; // <-- WAJIB TAMBAH INI
use App\Models\Prediksi;
use Barryvdh\DomPDF\Facade\Pdf;

class KlasifikasiController extends Controller
{
    public function index()
    {
        return view('welcome');
    }

    public function prediksi(Request $request)
    {
        $request->validate([
            'gambar' => 'required|image'
        ]);

        $gambar = $request->file('gambar');
        $uploadPath = public_path('uploads');

        if (!is_dir($uploadPath)) {
            mkdir($uploadPath, 0755, true);
        }

        $namaFile = time() . '.' . $gambar->getClientOriginalExtension();
        $gambar->move($uploadPath, $namaFile);
        $pathGambar = $uploadPath . DIRECTORY_SEPARATOR . $namaFile;

        try {
            $response = Http::timeout(60)
                ->attach('gambar', file_get_contents($pathGambar), $namaFile)
                ->post('http://127.0.0.1:5000/prediksi');

            if (!$response->successful()) {
                Log::error('Server prediksi gagal', ['body' => $response->body()]);
                return back()->with('error', 'Tidak dapat memproses prediksi.');
            }

            $hasil = $response->json();
            
            // Logika deskripsi tetap sama
            $deskripsi = ''; $solusi = '';
            if ($hasil['penyakit'] == 'Blast') {
                $deskripsi = 'Blast adalah penyakit daun padi akibat jamur Pyricularia oryzae.';
                $solusi = 'Gunakan fungisida dan varietas tahan.';
            } elseif ($hasil['penyakit'] == 'Blight') {
                $deskripsi = 'Blight merupakan hawar daun bakteri.';
                $solusi = 'Gunakan benih sehat dan sanitasi lahan.';
            } elseif ($hasil['penyakit'] == 'Tungro') {
                $deskripsi = 'Tungro adalah penyakit virus.';
                $solusi = 'Kendalikan wereng hijau.';
            } elseif ($hasil['penyakit'] == 'Healthy') {
                $deskripsi = 'Kondisi tanaman sehat.';
                $solusi = 'Pertahankan perawatan yang baik.';
            }

            // SIMPAN DATA DENGAN USER_ID
            Prediksi::create([
                'gambar' => $namaFile,
                'penyakit' => $hasil['penyakit'],
                'confidence' => $hasil['confidence'],
                'user_id' => Auth::id(), // <-- INI YANG MEMBUAT PRIVAT
            ]);

            return back()->with([
                'success' => 'Prediksi berhasil',
                'gambar' => $namaFile,
                'hasil' => $hasil['penyakit'] ?? 'Tidak ada hasil',
                'confidence' => $hasil['confidence'] ?? 0,
                'deskripsi' => $deskripsi,
                'solusi' => $solusi,
                'allPredictions' => $hasil['all_predictions'] ?? [],
            ]);

        } catch (\Exception $e) {
            Log::error('Prediksi request error: ' . $e->getMessage());
            return back()->with('error', 'Terjadi kesalahan server.');
        }
    }

    public function riwayat(Request $request)
    {
        // FILTER BERDASARKAN USER_ID
        $query = Prediksi::where('user_id', Auth::id());

        if ($request->filled('search')) {
            $query->where('penyakit', 'like', '%' . $request->search . '%');
        }

        if ($request->filled('filter')) {
            $query->where('penyakit', $request->filter);
        }

        $data = $query->latest()->get();
        return view('riwayat', compact('data'));
    }

    public function dashboard()
    {
        // FILTER BERDASARKAN USER_ID
        $userId = Auth::id();

        $totalPrediksi = Prediksi::where('user_id', $userId)->count();
        $blast = Prediksi::where('user_id', $userId)->where('penyakit', 'Blast')->count();
        $blight = Prediksi::where('user_id', $userId)->where('penyakit', 'Blight')->count();
        $healthy = Prediksi::where('user_id', $userId)->where('penyakit', 'Healthy')->count();
        $tungro = Prediksi::where('user_id', $userId)->where('penyakit', 'Tungro')->count();
        $terbaru = Prediksi::where('user_id', $userId)->latest()->take(3)->get();

        return view('dashboard', compact('totalPrediksi', 'blast', 'blight', 'healthy', 'tungro', 'terbaru'));
    }

    public function exportPdf()
    {
        $data = Prediksi::where('user_id', Auth::id())->latest()->get();
        $pdf = Pdf::loadView('pdf.laporan', compact('data'));
        return $pdf->download('laporan-prediksi.pdf');
    }

    public function hapus($id)
    {
        // Tambahkan cek user_id agar user tidak bisa hapus data orang lain via URL
        $data = Prediksi::where('id', $id)->where('user_id', Auth::id())->firstOrFail();

        $path = public_path('uploads/' . $data->gambar);
        if (file_exists($path)) {
            unlink($path);
        }

        $data->delete();
        return redirect()->back()->with('success', 'Data berhasil dihapus');
    }

    public function statistik()
    {
        $userId = Auth::id();
        return response()->json([
            'blast' => Prediksi::where('user_id', $userId)->where('penyakit', 'Blast')->count(),
            'blight' => Prediksi::where('user_id', $userId)->where('penyakit', 'Blight')->count(),
            'healthy' => Prediksi::where('user_id', $userId)->where('penyakit', 'Healthy')->count(),
            'tungro' => Prediksi::where('user_id', $userId)->where('penyakit', 'Tungro')->count(),
        ]);
    }
}