<?php

namespace App\Services;

use App\Exceptions\YeePayException;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Str;

class YeePayService
{
    public function __construct(
        protected array $config,
    ) {
    }

    /**
     * @param string $service
     * @param array $data
     * @return array
     */
    public function request(string $service, array $data = []): array
    {
        $data = array_merge([
            'requestNo' => Str::uuid()->getHex()->toString(),
            'service' => $service,
            'partnerId' => $this->config['partner_id'],
            'signType' => 'MD5',
            'notifyUrl' => route('yeepay.notify'),
        ], $data);

        $data['sign'] = $this->sign($data);

        $response = Http::asForm()->post($this->config['gateway_url'], $data);

        $response->throw();

        $result = $response->json();

        if ($result['success'] && in_array($result['resultCode'], ['EXECUTE_SUCCESS', 'EXECUTE_PROCESSING'])) {
            return $result;
        }

        $message = $result['resultDetail'] ?? $result['resultMessage'];

        throw new YeePayException($message);
    }

    /**
     * 生成签名
     *
     * @param array $params
     * @return string
     */
    protected function sign(array $params): string
    {
        unset($params['sign']);

        ksort($params);

        $str = '';

        foreach ($params as $key => $value) {
            if (blank($value)) {
                continue;
            }

            if ($str !== '') {
                $str .= '&';
            }

            if (is_array($value)) {
                $value = json_encode($value);
            }

            $str .= "{$key}={$value}";
        }

        $str .= $this->config['secret_key'];

        return md5($str);
    }
}