<?php

namespace Common\Lib;

class MaiyatianBase {
    protected $store = null;
    protected $appKey = '';
    protected $appSecret = '';
    protected $redirectUri = '';

    public function __construct()
    {
        $this->appKey = C('MYT_APPKEY');
        $this->appSecret = C('MYT_APPSECRET');
        $this->redirectUri = C('MYT_REDIRECT_URI');
    }

    public function sign(array $data, $command, $token = '')
    {
        $signData = [
            'app_key'   => $this->appKey,
            'command'   => $command,
            'data'      => $data['data'],
            'timestamp' => $data['timestamp'],
            'token'     => $token,
        ];

        ksort($signData);

        $dataToSign = '';
        foreach ($signData as $k => $v) {
            $dataToSign .= $k . '=' . $v . ',';
        }

        $dataToSign = substr($dataToSign, 0, -1);
        $hash  = hash_hmac('sha256', $dataToSign, $this->appSecret, true);
        $signData['signature'] = strtr(base64_encode($hash), '+/', '-_');
        unset($signData['command']);
        return $signData;
    }

    protected function request($url, $data)
    {
        $token = '';
        $command = explode('/', $url);
        
        if (!in_array($command, ['access_token']) && $this->store) {
            $token = $this->store['maiyatian_token'];
        }

        $data = array_merge($this->sign(array_merge([
            'timestamp' => round(microtime(true) * 1000),
            'data' => json_encode($data)
        ]), $command[count($command) - 1], $token), [
            'request_id' => strtoupper(str_replace([chr(123), chr(125)], '', \Org\Util\String::uuid())),
        ]);
        $response = $this->post(C('MYT_DOMAIN') . $url, $data);
        if (C('MYT_LOGS')) {
            (new \Common\Model\LogsModel())->add([
                'url' => C('MYT_DOMAIN') . $url,
                'data' => @json_encode($data, JSON_UNESCAPED_UNICODE),
                'response' => @json_encode($response, JSON_UNESCAPED_UNICODE),
                'create_time' => time(),
            ]);
        }

        return $response;
    }

    private function post($url, $data = [])
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        if (is_array($data)) {
            $data = json_encode($data);
        }
        curl_setopt($curl, CURLOPT_POST, 1);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        curl_setopt($curl, CURLOPT_HEADER, 0);
        curl_setopt($curl, CURLOPT_HTTPHEADER, array(
            'Content-Type: application/json; charset=utf-8',
            'Content-Length:' . strlen($data),
            'Cache-Control: no-cache',
            'Pragma: no-cache'
        ));
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $result = curl_exec($curl);
        curl_close($curl);
        return @json_decode($result, true);
    }
}