voucher/app/Http/Controllers/Customer/CoinExchangeController.php

<?php

namespace App\Http\Controllers\Customer;

use App\Http\Controllers\Controller;
use App\Models\Customer;
use App\Models\Location;
use App\Models\Sale;
use App\Models\Voucher;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Str;

class CoinExchangeController extends Controller
{
    public function index(Request $request)
    {
        $locations = Location::get();
        $vouchers = Voucher::with(['location'])
            ->where(function ($q) {
                $q->where('price_coin', '!=', 0)
                    ->where('price_coin', '!=', null);
            })
            ->where('is_sold', Voucher::UNSOLD)
            ->groupBy('batch_id')
            ->orderBy('updated_at', 'desc');

        if ($request->location_id != '') {
            $vouchers->where('location_id', $request->location_id);
        }

        return inertia('Coin/Exchange', [
            'locations' => $locations,
            'vouchers' => tap($vouchers->paginate(10))->setHidden(['username', 'password']),
            '_location_id' => $request->location_id ?? '',
        ]);
    }

    public function exchange(Voucher $voucher)
    {
        $batchCount = $voucher->count_unsold();
        if ($batchCount < 1) {
            return redirect()->route('customer.coin.exchange')
                ->with('message', ['type' => 'error', 'message' => 'transaksi gagal, voucher sedang tidak tersedia']);
        }

        $customer = Customer::find(auth()->id());

        if ($customer->coin_balance < $voucher->price_coin) {
            return redirect()->route('customer.coin.exchange')
                ->with('message', ['type' => 'error', 'message' => 'koin kamu tidak cukup untuk ditukar voucher ini']);
        }

        DB::beginTransaction();
        $sale = $customer->sales()->create([
            'code' => 'Tukar Coin ' . str()->upper(str()->random(5)),
            'date_time' => now(),
            'amount' => 0,
            'payed_with' => Sale::PAYED_WITH_COIN,
        ]);

        $voucher = $voucher->shuffle_unsold();
        $sale->items()->create([
            'entity_type' => $voucher::class,
            'entity_id' => $voucher->id,
            'price' => $voucher->price_coin,
            'quantity' => 1,
            'additional_info_json' => json_encode([
                'id' => $voucher->id,
                'quantity' => 1,
                'voucher' => $voucher->load(['location'])
            ]),
        ]);

        $voucher->update(['is_sold' => Voucher::SOLD]);
        $voucher->check_stock_notification();

        $sale->create_notification();

        $coin = $customer->coins()->create([
            'credit' => $voucher->price_coin,
            'description' => $sale->code,
        ]);

        $coin->update_customer_balance();
        DB::commit();

        return redirect()->route('transactions.show', $sale)
            ->with('message', ['type' => 'success', 'message' => 'penukaran berhasil']);
    }
}