<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Classification;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Storage;

class ClassificationController extends Controller
{
    public function process(Request $request)
    {
        // 🔹 Ambil base64 dari frontend
        $imageData = $request->input('image');
        $image = str_replace('data:image/png;base64,', '', $imageData);
        $image = str_replace(' ', '+', $image);

        // 🔹 Simpan sementara
        $imageName = 'temp_' . time() . '.png';
        Storage::disk('public')->put('scans/' . $imageName, base64_decode($image));

        // 🔹 Path file untuk Python
        $imagePath = storage_path('app/public/scans/' . $imageName);

        // 🔹 Path Python & script
        $python = "C:\\Program Files\\Python310\\python.exe";
        $script = base_path('python/predict.py');

        // 🔹 Jalankan Python
        $command = "\"$python\" \"$script\" \"$imagePath\"";
        $output = shell_exec($command);

        // 🔥 HANDLE ERROR DARI PYTHON
        if (!$output || str_contains($output, 'ERROR')) {
            return response()->json([
                'status' => 'error',
                'message' => 'Gagal memproses gambar (objek tidak terdeteksi)'
            ], 500);
        }

        // 🔹 Format output: label|confidence
        $result = explode('|', trim($output));

        if (count($result) < 2) {
            return response()->json([
                'status' => 'error',
                'message' => 'Format output Python tidak valid'
            ], 500);
        }

        $label = $result[0];
        $confidence = round($result[1] * 100, 2);

        // 🔹 Mapping label biar lebih user-friendly
        $labelMap = [
            'light'  => 'Light Roast',
            'medium' => 'Medium Roast',
            'dark'   => 'Dark Roast'
        ];

        $finalLabel = $labelMap[$label] ?? $label;

        return response()->json([
            'status'     => 'success',
            'label'      => $finalLabel,
            'confidence' => $confidence . '%',
            'image_name' => $imageName,
            'image_url'  => asset('storage/scans/' . $imageName),
            'created_at' => now()->translatedFormat('d F Y, H:i') . ' WIB'
        ]);
    }

    public function store(Request $request)
    {
        Classification::create([
            'user_id'    => Auth::id(),
            'image_path' => 'scans/' . $request->image_name,
            'label'      => $request->label,
            'confidence' => str_replace('%', '', $request->confidence),
            'color_data' => json_encode([
                'r' => 120,
                'g' => 80,
                'b' => 50
            ])
        ]);

        return response()->json(['message' => 'Data berhasil disimpan ke riwayat!']);
    }

    public function destroyTemp(Request $request)
    {
        $imagePath = 'scans/' . $request->image_name;

        if (Storage::disk('public')->exists($imagePath)) {
            Storage::disk('public')->delete($imagePath);
            return response()->json(['message' => 'File sampah berhasil dibuang!']);
        }

        return response()->json(['message' => 'File tidak ditemukan'], 404);
    }

    public function history()
    {
        $histories = Classification::where('user_id', Auth::id())
            ->orderBy('created_at', 'desc')
            ->get();

        return view('history', compact('histories'));
    }

    public function destroy($id)
    {
        $data = Classification::where('id', $id)
            ->where('user_id', Auth::id())
            ->firstOrFail();

        if (Storage::disk('public')->exists($data->image_path)) {
            Storage::disk('public')->delete($data->image_path);
        }

        $data->delete();

        return redirect()->route('history')->with('success', 'Data riwayat berhasil dihapus.');
    }
    public function karakteristik()
    {
        return view('karakteristik');
    }
}