<?php

namespace App\Http\Controllers;

use App\Models\Testing;
use App\Models\Brand;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class TestingController extends Controller
{
    public function index(Request $request)
    {
        // Ambil semua brand dari tabel brands untuk dropdown
        $brands = Brand::all();

        // Ambil brand yang dipilih dari query parameter (default ke ID pertama)
        $brand = $request->input('brand', $brands->first()->id ?? 1);

        // Ambil data testing sesuai brand
        $testings = Testing::where('brands', $brand)->orderBy('no')->get();

        // Cek apakah ada data testing sama sekali
        $hasData = $testings->isNotEmpty();

        return view('testing', compact('testings', 'brand', 'brands', 'hasData'));
    }

//     public function generate(Request $request)
//     {
//         // Mengambil data dari tabel samples
//         DB::insert("
//         INSERT INTO testing (no, data_1, data_2, data_3, target, brands)
// SELECT
//     ROW_NUMBER() OVER (PARTITION BY s4.brand ORDER BY s4.id) AS no,
//     s1.data AS data_1,  -- minggu -3 sebelum target
//     s2.data AS data_2,  -- minggu -2 sebelum target
//     s3.data AS data_3,  -- minggu -1 sebelum target
//     s4.data AS target,  -- target minggu sekarang
//     s4.brand AS brands
// FROM samples s4
// JOIN samples s3 ON s3.id = s4.id - 1
// JOIN samples s2 ON s2.id = s4.id - 2
// JOIN samples s1 ON s1.id = s4.id - 3
// WHERE s4.brand BETWEEN 1 AND 11
//   AND s3.brand = s4.brand
//   AND s2.brand = s4.brand
//   AND s1.brand = s4.brand
//   AND s4.bulan BETWEEN 9 AND 12
// ORDER BY s4.brand, s4.id;
//     ");
//         return redirect()->route('testing.index')->with('success', 'Data Testing berhasil diambil.');
//     }

    public function reset()
    {
        DB::table('testing')->truncate();

        return redirect()->route('testing.index')->with('success', 'Data Testing berhasil direset.');
    }


    public function generate(Request $request)
{
    $startMonth = session('startMonth'); // Ambil bulan mulai dari session
    if (!$startMonth) {
        return redirect()->route('testing.index')->with('error', 'Start month tidak ditemukan di session.');
    }

    // Hitung bulan untuk testing: 4 bulan setelah training (bulan ke 9–12 dari startMonth)
    $validMonths = [];
    for ($i = 8; $i < 12; $i++) {
        $month = ($startMonth + $i - 1) % 12 + 1;
        $validMonths[] = $month;
    }

    // Ambil brand_id aktif
    $brands = DB::table('products')
        ->where('status', 'aktif')
        ->distinct()
        ->pluck('brand_id')
        ->toArray();

    if (empty($brands)) {
        return redirect()->route('testing.index')->with('error', 'Tidak ada brand aktif ditemukan.');
    }

    // Insert data testing
    DB::insert("
        INSERT INTO testing (no, data_1, data_2, data_3, target, brands)
        SELECT
            ROW_NUMBER() OVER (PARTITION BY s4.brand ORDER BY s4.id) AS no,
            s1.data AS data_1,  -- minggu -3 sebelum target
            s2.data AS data_2,  -- minggu -2 sebelum target
            s3.data AS data_3,  -- minggu -1 sebelum target
            s4.data AS target,  -- target minggu sekarang
            s4.brand AS brands
        FROM samples s4
        JOIN samples s3 ON s3.id = s4.id - 1
        JOIN samples s2 ON s2.id = s4.id - 2
        JOIN samples s1 ON s1.id = s4.id - 3
        WHERE 
            s4.brand IN (" . implode(',', $brands) . ")
            AND s3.brand = s4.brand
            AND s2.brand = s4.brand
            AND s1.brand = s4.brand
            AND s4.bulan IN (" . implode(',', $validMonths) . ")
        ORDER BY s4.brand, s4.id
    ");

    return redirect()->route('testing.index')->with('success', 'Data Testing berhasil diambil.');
}

}