<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Services\BalanceService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use InvalidArgumentException;

class GameBalanceController extends Controller
{
    public function show(int $accountId, BalanceService $balances): JsonResponse
    {
        return response()->json(['account_id' => $accountId, 'balance' => $balances->balance($accountId)]);
    }

    public function spend(Request $request, int $accountId, BalanceService $balances): JsonResponse
    {
        $data = $request->validate([
            'amount' => ['required', 'numeric', 'decimal:0,2', 'gt:0'],
            'idempotency_key' => ['required', 'string', 'max:160'],
            'description' => ['nullable', 'string', 'max:255'],
        ]);

        try {
            $transaction = $balances->spend(
                $accountId,
                (string) $data['amount'],
                'game:'.$data['idempotency_key'],
                $data['description'] ?? null,
            );
        } catch (InvalidArgumentException $exception) {
            return response()->json(['message' => $exception->getMessage()], 422);
        }

        return response()->json([
            'transaction_id' => $transaction->id,
            'account_id' => $transaction->account_id,
            'amount' => $transaction->amount,
            'balance' => $transaction->balance_after,
        ]);
    }
}