<?php

namespace App\Services;

use Illuminate\Support\Facades\Http;

/**
 * 佳博云打印
 * https://dev.poscom.cn/docs
 */
class PrintService
{
    protected $memberCode;
    protected $apiKey;

    function __construct()
    {
        $this->memberCode = config('postcom.memberCode');
        $this->apiKey = config('postcom.apiKey');
    }

    /**
     * 通过模板打印
     * https://dev.poscom.cn/openapi?templetPrint
     * 
     * @param string $deviceID
     * @param string $templetID
     * @param array $data
     * 
     * @return array {code: 0(成功), msg: '错误信息'}
     */
    public function template($deviceID, $templetID, $data)
    {
        $result = ['code' => 0, 'msg' => ''];
        if (config('app.env') === 'local') {
            return $result;
        }
        $url = 'https://api.poscom.cn/apisc/templetPrint';
        $params = $this->params(['deviceID' => $deviceID]);
        $params['templetID'] = $templetID;
        $params['tData'] = json_encode($data);

        $response = Http::asForm()->post($url, $params);
        if ($response->successful()) {
            $result = $response->json();
        } else {
            $result['code'] = 1;
            $result['msg'] = '请求失败: ' . $response->status();
        }

        return $result;
    }

    /**
     * 构造请求参数
     * 
     * @param array $data {deviceID: 终端编号}
     * @return array
     */
    protected function params($data = [])
    {
        $reqTime = $this->getMillisecond();
        $deviceID = data_get($data, 'deviceID');
        $memberCode = $this->memberCode;
        $msgNo = '';
        $securityCode = md5($memberCode.$deviceID.$msgNo.$reqTime.$this->apiKey);
        return [
            'reqTime' => $reqTime,
            'securityCode' => $securityCode,
            'memberCode' => $memberCode,
            'deviceID' => $deviceID,
        ];
    }

    protected function getMillisecond()
    {
        list($t1, $t2) = explode(' ', microtime());
        return (float)sprintf('%.0f',(floatval($t1)+floatval($t2))*1000);
    }

    /**
     * @return PrintService
     */
    public static function make(...$params)
    {
        return new static(...$params);
    }
}