<?php

namespace App\Services\Pagarme;

use App\Models\Address;
use App\Models\ClientPaymentMethod;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;

class PagarmeCardService
{
    public function __construct(
        private readonly PagarmeCustomerService $pagarmeCustomerService,
    ) {}

    public function createCardForPaymentMethod(ClientPaymentMethod $paymentMethod): ?string
    {
        if (! empty($paymentMethod->gateway_card_id)) {
            return $paymentMethod->gateway_card_id;
        }

        if (empty($paymentMethod->token)) {
            throw new \InvalidArgumentException('Token do cartao e obrigatorio para salvar cartao no Pagar.me.');
        }

        $paymentMethod->loadMissing('client.user');

        $customerId = $this->pagarmeCustomerService->createCustomerForClient(
            $paymentMethod->client,
            []
        );

        if (empty($customerId)) {
            throw new \RuntimeException('Cliente precisa ter customer_id do Pagar.me para salvar cartao.');
        }

        $payload = $this->filterFilledRecursive([
            'token'           => $paymentMethod->token,
            'label'           => $paymentMethod->card_name,
            'billing_address' => $this->buildBillingAddress($paymentMethod),
        ]);

        $endpoint = $this->pagarmeUrl("/customers/{$customerId}/cards");

        PagarmeHttpLogger::logRequest('POST', $endpoint, $payload);

        $response = $this->pagarmeRequest($paymentMethod->id)
            ->post($endpoint, $payload);

        if ($response->failed()) {
            $responseBody = $response->json() ?? $response->body();

            Log::channel('pagarme')->error('Pagar.me card creation failed', [
                'client_payment_method_id' => $paymentMethod->id,
                'client_id'                => $paymentMethod->client_id,
                'customer_id'              => $customerId,
                'status'                   => $response->status(),
                'body'                     => $responseBody,
                'payload'                  => $payload,
            ]);

            throw new \RuntimeException($this->gatewayErrorMessage($responseBody));
        }

        $cardData = $response->json();
        $cardId   = $cardData['id'] ?? null;

        if (empty($cardId)) {
            Log::channel('pagarme')->error('Pagar.me card creation returned empty id', [
                'client_payment_method_id' => $paymentMethod->id,
                'client_id'                => $paymentMethod->client_id,
                'customer_id'              => $customerId,
                'response'                 => $cardData,
            ]);

            throw new \RuntimeException('Pagar.me card creation returned an empty id.');
        }

        $paymentMethod->forceFill([
            'gateway_card_id'  => $cardId,
            'brand'            => $paymentMethod->brand ?: ($cardData['brand'] ?? null),
            'last_four_digits' => $paymentMethod->last_four_digits ?: ($cardData['last_four_digits'] ?? null),
        ])->save();

        return $cardId;
    }

    //

    private function pagarmeRequest(int $paymentMethodId)
    {
        $secretKey = config('services.pagarme.secret_key');

        if (empty($secretKey)) {
            Log::channel('pagarme')->error('PAGARME_SECRET_KEY is not configured.');

            throw new \RuntimeException('PAGARME_SECRET_KEY is not configured.');
        }

        return Http::withBasicAuth($secretKey, '')
            ->withHeaders([
                'Idempotency-Key' => "client-payment-method-{$paymentMethodId}-card",
                'Content-Type'    => 'application/json',
                'Accept'          => 'application/json',
            ]);
    }

    private function pagarmeUrl(string $path): string
    {
        return rtrim(config('services.pagarme.base_url'), '/').'/'.ltrim($path, '/');
    }

    //

    private function buildBillingAddress(ClientPaymentMethod $paymentMethod): array
    {
        $address = Address::query()
            ->with(['city.state', 'state'])
            ->where('source', 'client')
            ->where('source_id', $paymentMethod->client_id)
            ->orderByDesc('is_primary')
            ->latest('id')
            ->first();

        if (! $address) {
            throw new \InvalidArgumentException('Cliente precisa ter endereco para salvar cartao no Pagar.me.');
        }

        $state = $address->state?->code ?? $address->city?->state?->code;
        $city  = $address->city?->name;

        $line1 = implode(', ', array_filter([
            $address->number ?: 'S/N',
            $address->address,
            $address->district,
        ]));

        foreach ([
            'estado'   => $state,
            'cidade'   => $city,
            'cep'      => $this->digits($address->zip_code),
            'endereco' => $line1,
        ] as $field => $value) {
            if ($value === null || $value === '') {
                throw new \InvalidArgumentException("Cliente precisa ter {$field} valido para salvar cartao no Pagar.me.");
            }
        }

        return [
            'line_1'   => $line1,
            'line_2'   => $address->complement ?: $address->instructions,
            'zip_code' => $this->digits($address->zip_code),
            'city'     => $city,
            'state'    => $state,
            'country'  => 'BR',
        ];
    }

    private function digits(?string $value): string
    {
        return preg_replace('/\D+/', '', (string) $value) ?? '';
    }

    private function filterFilledRecursive(array $data): array
    {
        $filtered = [];

        foreach ($data as $key => $value) {
            if (is_array($value)) {
                $value = $this->filterFilledRecursive($value);
            }

            if ($value !== null && $value !== '' && $value !== []) {
                $filtered[$key] = $value;
            }
        }

        return $filtered;
    }

    private function gatewayErrorMessage(mixed $responseBody): string
    {
        $message = is_array($responseBody) ? ($responseBody['message'] ?? null) : null;

        if ($message === 'Token not found.') {
            return 'Token do cartao nao encontrado no Pagar.me. Gere o token com a public key do mesmo ambiente da secret key.';
        }

        return 'Erro ao salvar cartao no Pagar.me.';
    }
}