<?php
namespace Qrcode\Controller;

class JumpController extends HomeController
{
    private $secret = "99d5dd03c24a3dbedd7ef176ec5b9a39";
    private $appid = "wxab40e4470236e599";

    private function getAccessToken()
    {
        $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$this->appid}&secret={$this->secret}";
        $r = file_get_contents($url);
        $ret = json_decode($r, true);

        return $ret['access_token'];
    }

    public function getURLScheme()
    {
        header('Access-Control-Allow-Origin: *');
        $uniqueStr = I('request.unique_str', '');
        $url = "https://api.weixin.qq.com/wxa/generatescheme?access_token=".$this->getAccessToken();
        $data = [
            'jump_wxa' => [
                'path' => '/pages/index/index',
                'query' => "id={$uniqueStr}"
            ],
            'is_expire' => true,
            "expire_time" => time() + 86400*21
        ];

        $ret = $this->curl_post($url, json_encode($data));

        echo $ret;
    }

    public function curl_post($url, $post_data = '', $timeout = 3000)
    {
        header("Content-type:text/html;charset=utf-8");
        $ch = curl_init();
        curl_setopt ($ch, CURLOPT_URL, $url);
        curl_setopt ($ch, CURLOPT_POST, 1);
        curl_setopt ($ch, CURLOPT_POSTFIELDS, $post_data);
        curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
        curl_setopt($ch, CURLOPT_HEADER, false);
        $file_contents = curl_exec($ch);
        curl_close($ch);
        return $file_contents;
    }

    public function jumpMp() {
        $uniqueStr = I('server.QUERY_STRING');
        $posStr = 'Qrcode/Jump/jumpMp/';
        $pos = strpos($uniqueStr, $posStr) + strlen($posStr);
        $uniqueStr = substr($uniqueStr, $pos, 8);
        $this->assign("unique_str", $uniqueStr);
        $this->display();
    }

    // MiniTop 二维码推广
    public function getImgs()
    {
        $isHttps = is_https();
        $backgroundImg = ($isHttps? 'https://': 'http://').$_SERVER['HTTP_HOST']."/Public/Qrcode/images/b3.png";
//        $qrCodeImg = ($isHttps? 'https://': 'http://').$_SERVER['HTTP_HOST']."/Public/Qrcode/images/qrcode.png";
        $qrCodeImg = '';
        $id = I('request.id', '');
        if (!$id || $id == 'undefined') {
            $this->ajaxReturn([
                'id' => $_REQUEST['id'],
                'status' => 1,
                'background_img' => $backgroundImg,
                'qrcode_img' => $qrCodeImg
            ]);
        }
        // 二维码：
        $qrcodePromotionList = M('qrcode_promotion_list', 'tab_')->where(['unique_str' => $id])->find();
        if (!$qrcodePromotionList) {
            $this->ajaxReturn([
                'id' => $_REQUEST['id'],
                'status' => 1,
                'background_img' => $backgroundImg,
                'qrcode_img' => $qrCodeImg
            ]);
        }
        $qrcode = json_decode($qrcodePromotionList['qrcode_img'], true);
        $qrcode = array_values($qrcode);
        $qrcodeCnt = count($qrcode);
        $intervalMin = $qrcodePromotionList['interval_min'];
        $elapseMin = floor((time() - $qrcodePromotionList['create_time']) / 60);
        $imgIndex = 0;
        if ($intervalMin > 0) {
            $imgIndex = floor($elapseMin / $intervalMin);
            $imgIndex = $imgIndex % $qrcodeCnt;
        }
        // 背景图
        $qrcodePromotion = M('qrcode_promotion', 'tab_')->where(['id' => $qrcodePromotionList['qp_id']])->find();

        $this->ajaxReturn([
            'id' => $_REQUEST['id'],
            'status' => 1,
            'background_img' => $qrcodePromotion['background_img'],
            'qrcode_img' => $qrcode[$imgIndex]
        ]);
    }

}