<?php

namespace app\support;

class Kuaidi100Client
{
    private const QUERY_URL = 'https://poll.kuaidi100.com/poll/query.do';
    private const SUBSCRIBE_URL = 'https://poll.kuaidi100.com/poll';
    private const AUTONUMBER_URL = 'http://www.kuaidi100.com/autonumber/auto';
    private const COMPANY_CATALOG_URL = 'http://api.kuaidi100.com/manager/openapi/download/kdbm.do';

    public function __construct(private ?Kuaidi100ConfigService $configService = null)
    {
        $this->configService ??= new Kuaidi100ConfigService();
    }

    public function query(string $companyCode, string $trackingNo, string $phone = ''): array
    {
        $config = $this->configService->getConfig();
        if (!$this->configService->isReadyForQuery()) {
            throw new \RuntimeException('快递100实时查询配置未完成');
        }

        $param = [
            'com' => $companyCode,
            'num' => $trackingNo,
            'resultv2' => '1',
        ];
        if ($phone !== '') {
            $param['phone'] = $phone;
        }

        $paramJson = $this->encodeJson($param);
        $response = $this->postForm(self::QUERY_URL, [
            'customer' => $config['customer'],
            'sign' => strtoupper(md5($paramJson . $config['key'] . $config['customer'])),
            'param' => $paramJson,
        ]);

        $decoded = json_decode($response, true);
        if (!is_array($decoded)) {
            throw new \RuntimeException('快递100实时查询返回格式异常');
        }

        return $decoded;
    }

    public function recognize(string $trackingNo): array
    {
        $trackingNo = trim($trackingNo);
        if ($trackingNo === '') {
            throw new \InvalidArgumentException('快递100单号不能为空');
        }
        if (!$this->configService->isReadyForRecognition()) {
            throw new \RuntimeException('快递100智能识别配置未完成');
        }

        $config = $this->configService->getConfig();
        $response = $this->requestGet(self::AUTONUMBER_URL, [
            'num' => $trackingNo,
            'key' => $config['key'],
        ]);

        $decoded = json_decode($response, true);
        if (!is_array($decoded)) {
            throw new \RuntimeException('快递100智能识别返回格式异常');
        }

        return $decoded;
    }

    public function downloadCompanyCatalogWorkbook(): string
    {
        return $this->requestGet(self::COMPANY_CATALOG_URL, [], 30, 15);
    }

    public function subscribe(string $companyCode, string $trackingNo, string $phone = ''): array
    {
        $config = $this->configService->getConfig();
        if (!$this->configService->isReadyForSubscribe()) {
            throw new \RuntimeException('快递100订阅配置未完成');
        }

        $parameters = [
            'callbackurl' => $config['callback_url'],
            'resultv2' => '1',
        ];
        if ($config['callback_salt'] !== '') {
            $parameters['salt'] = $config['callback_salt'];
        }
        if ($phone !== '') {
            $parameters['phone'] = $phone;
        }

        $requestPayload = [
            'company' => $companyCode,
            'number' => $trackingNo,
            'key' => $config['key'],
            'parameters' => $parameters,
        ];
        if ($companyCode === '') {
            unset($requestPayload['company']);
            $requestPayload['autoCom'] = '1';
        }

        $paramJson = $this->encodeJson($requestPayload);

        $response = $this->postForm(self::SUBSCRIBE_URL, [
            'schema' => 'json',
            'param' => $paramJson,
        ]);

        $decoded = json_decode($response, true);
        if (!is_array($decoded)) {
            throw new \RuntimeException('快递100订阅返回格式异常');
        }

        return $decoded;
    }

    private function postForm(string $url, array $fields): string
    {
        $ch = curl_init($url);
        curl_setopt_array($ch, [
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_POST => true,
            CURLOPT_POSTFIELDS => http_build_query($fields),
            CURLOPT_TIMEOUT => 8,
            CURLOPT_CONNECTTIMEOUT => 4,
            CURLOPT_HTTPHEADER => [
                'Content-Type: application/x-www-form-urlencoded',
            ],
        ]);

        $response = curl_exec($ch);
        $errno = curl_errno($ch);
        $error = curl_error($ch);
        $httpStatus = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        if ($errno) {
            throw new \RuntimeException('快递100请求失败：' . $error);
        }
        if ($httpStatus < 200 || $httpStatus >= 300) {
            throw new \RuntimeException('快递100请求 HTTP 状态异常：' . $httpStatus);
        }

        return is_string($response) ? $response : '';
    }

    private function requestGet(string $url, array $query = [], int $timeout = 10, int $connectTimeout = 5): string
    {
        $fullUrl = $query ? $url . (str_contains($url, '?') ? '&' : '?') . http_build_query($query) : $url;
        $ch = curl_init($fullUrl);
        curl_setopt_array($ch, [
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_HTTPGET => true,
            CURLOPT_TIMEOUT => $timeout,
            CURLOPT_CONNECTTIMEOUT => $connectTimeout,
        ]);

        $response = curl_exec($ch);
        $errno = curl_errno($ch);
        $error = curl_error($ch);
        $httpStatus = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        if ($errno) {
            throw new \RuntimeException('快递100请求失败：' . $error);
        }
        if ($httpStatus < 200 || $httpStatus >= 300) {
            throw new \RuntimeException('快递100请求 HTTP 状态异常：' . $httpStatus);
        }

        return is_string($response) ? $response : '';
    }

    private function encodeJson(array $payload): string
    {
        $json = json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
        if (!is_string($json)) {
            throw new \RuntimeException('快递100请求参数编码失败');
        }

        return $json;
    }
}