<?php

namespace App\Services;

use GuzzleHttp\Client;
use GuzzleHttp\Exception\GuzzleException;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Log;

class PayPalService
{
    private Client $client;

    private string $mode;

    private string $clientId;

    private string $clientSecret;

    public function __construct()
    {
        $this->mode = config('habbo.paypal.mode', 'sandbox');
        $this->clientId = config("habbo.paypal.{$this->mode}.client_id", '');
        $this->clientSecret = config("habbo.paypal.{$this->mode}.client_secret", '');

        $baseUrl = $this->mode === 'live'
            ? 'https://api-m.paypal.com'
            : 'https://api-m.sandbox.paypal.com';

        $this->client = new Client([
            'base_uri' => $baseUrl,
            'timeout' => 30,
            'http_errors' => false,
        ]);
    }

    public function getAccessToken(): ?string
    {
        $cacheKey = 'paypal_access_token_' . $this->mode;

        return Cache::remember($cacheKey, 32400, function () {
            try {
                $response = $this->client->post('/v1/oauth2/token', [
                    'headers' => [
                        'Accept' => 'application/json',
                        'Content-Type' => 'application/x-www-form-urlencoded',
                    ],
                    'auth' => [$this->clientId, $this->clientSecret],
                    'form_params' => [
                        'grant_type' => 'client_credentials',
                    ],
                ]);

                $body = json_decode($response->getBody(), true);

                if ($response->getStatusCode() !== 200 || ! isset($body['access_token'])) {
                    Log::error('PayPal access token request failed', [
                        'status' => $response->getStatusCode(),
                        'response' => $body,
                    ]);

                    return;
                }

                return $body['access_token'];
            } catch (GuzzleException $e) {
                Log::error('PayPal access token exception', [
                    'message' => $e->getMessage(),
                ]);

                return;
            }
        });
    }

    public function createOrder(array $orderData): ?array
    {
        $accessToken = $this->getAccessToken();

        if ($accessToken === null) {
            return null;
        }

        try {
            $response = $this->client->post('/v2/checkout/orders', [
                'headers' => [
                    'Content-Type' => 'application/json',
                    'Authorization' => "Bearer {$accessToken}",
                    'Accept' => 'application/json',
                ],
                'json' => $orderData,
            ]);

            $body = json_decode($response->getBody(), true);

            if ($response->getStatusCode() >= 400) {
                Log::error('PayPal create order failed', [
                    'status' => $response->getStatusCode(),
                    'response' => $body,
                ]);

                return $body;
            }

            return $body;
        } catch (GuzzleException $e) {
            Log::error('PayPal create order exception', [
                'message' => $e->getMessage(),
            ]);

            return null;
        }
    }

    public function capturePaymentOrder(string $orderId): ?array
    {
        $accessToken = $this->getAccessToken();

        if ($accessToken === null) {
            return null;
        }

        try {
            $response = $this->client->post("/v2/checkout/orders/{$orderId}/capture", [
                'headers' => [
                    'Content-Type' => 'application/json',
                    'Authorization' => "Bearer {$accessToken}",
                    'Accept' => 'application/json',
                ],
            ]);

            $body = json_decode($response->getBody(), true);

            if ($response->getStatusCode() >= 400) {
                Log::error('PayPal capture order failed', [
                    'status' => $response->getStatusCode(),
                    'response' => $body,
                ]);

                return $body;
            }

            return $body;
        } catch (GuzzleException $e) {
            Log::error('PayPal capture order exception', [
                'message' => $e->getMessage(),
            ]);

            return null;
        }
    }
}