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<?php
namespace App\Http\Controllers;

use App\Models\Plan;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Log;

class AsaasController extends Controller
{
    private $apiKey;
    private $baseUrl;

    public function __construct()
    {
        $this->apiKey  = env('ASAAS_API_KEY');
        $this->baseUrl = env('ASAAS_BASE_URL', 'https://api.asaas.com/v3');
    }

    public function showCheckout($planId)
    {
        $plan = Plan::with('currency')->findOrFail($planId);
        abort_unless($plan->currency->currency_code === 'BRL', 403);
        return view('asaas.checkout', compact('plan'));
    }

    public function processPayment(Request $request, $planId)
    {
        $request->validate([
            'cpf_cnpj' => ['required','string','min:11','max:18'],
            'name'     => ['required','string'],
            'email'    => ['required','email'],
        ]);
        $plan     = Plan::with('currency')->findOrFail($planId);
        $cpf      = preg_replace('/[^0-9]/', '', $request->cpf_cnpj);
        $customer = $this->createOrFindCustomer($cpf, $request->name, $request->email);
        if (!$customer || isset($customer['errors'])) {
            return back()->withErrors(['asaas' => 'Erro cliente: '.json_encode($customer['errors'] ?? [])]);
        }
        $userId = Auth::id();
        $charge = $this->createPixCharge($customer['id'], $plan->price, 'Plano '.$plan->name, $planId, $userId);
        if (!$charge || isset($charge['errors'])) {
            return back()->withErrors(['asaas' => 'Erro cobranca: '.json_encode($charge['errors'] ?? [])]);
        }
        $pixData = $this->getPixQrCode($charge['id']);
        return view('asaas.pix', compact('plan', 'charge', 'pixData'));
    }

    private function createOrFindCustomer($cpfCnpj, $name, $email)
    {
        $search = Http::withHeaders(['access_token' => $this->apiKey])
            ->get($this->baseUrl.'/customers', ['cpfCnpj' => $cpfCnpj]);
        if ($search->ok() && $search->json('totalCount') > 0) {
            return $search->json('data')[0];
        }
        return Http::withHeaders(['access_token' => $this->apiKey])
            ->post($this->baseUrl.'/customers', ['name' => $name, 'email' => $email, 'cpfCnpj' => $cpfCnpj])
            ->json();
    }

    private function createPixCharge($customerId, $value, $description, $planId, $userId)
    {
        return Http::withHeaders(['access_token' => $this->apiKey])
            ->post($this->baseUrl.'/payments', [
                'customer'          => $customerId,
                'billingType'       => 'PIX',
                'value'             => $value,
                'dueDate'           => date('Y-m-d', strtotime('+1 day')),
                'description'       => $description,
                'externalReference' => 'plan_'.$planId.'_user_'.$userId,
            ])->json();
    }

    private function getPixQrCode($chargeId)
    {
        return Http::withHeaders(['access_token' => $this->apiKey])
            ->get($this->baseUrl.'/payments/'.$chargeId.'/pixQrCode')
            ->json();
    }
}