<?php
namespace Qrcode\Src;

use Dever;

class Api
{
    private $path = 'upload/qrcode';
    public function __construct()
    {
        //$this->config = Dever::config('base', 'project')->qrcode;
        $this->config = Dever::config('base', 'qrcode')->qrcode;
        Dever::apply('lib/phpqrcode');
    }

    public function qrcode($string, $local = false, $logo = false, $uid = false)
    {
        if ($local) {
            $this->config['local'] = true;
        }
        if ($this->config['local']) {
            $result = $this->create($string, $local, $logo, $uid);
        } else {
            $result = $this->create($string);
        }
        return $result;
    }

    private function create($value, $local = false, $logo = false, $uid = false)
    {
        $file = false;
        if ($local) {
            if ($uid) {
                $path = Dever::pathAvatar($this->path, $uid);
            } else {
                $path = Dever::pathDay($this->path);
            }
            
            $file = $path . $local . '.png';
        }
        if (!is_file($file)) {
            $QR = \QRcode::png($value, $file, 'L', $this->config['size'], 2);

            if ($logo) {
                if (strstr($file, 'http')) {
                    $file_string = Dever::curl($file);
                } else {
                    $file_string = file_get_contents($file);
                }

                if (Dever::project('upload')) {
                    $logo_string = Dever::load('upload/lib/file')->content($logo);
                } else {
                    $logo_string = file_get_contents($logo);
                }
                
                $QR = imagecreatefromstring($file_string);
                $logo = imagecreatefromstring($logo_string);
                $QR_width = imagesx($QR);//二维码图片宽度
                $QR_height = imagesy($QR);//二维码图片高度
                $logo_width = imagesx($logo);//logo图片宽度
                $logo_height = imagesy($logo);//logo图片高度
                $logo_qr_width = $QR_width / 5;
                $scale = $logo_width/$logo_qr_width;
                $logo_qr_height = $logo_height/$scale;
                $from_width = ($QR_width - $logo_qr_width) / 2;//重新组合图片并调整大小
                imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width,$logo_qr_height, $logo_width, $logo_height);//输出图片
                imagepng($QR, $file);
            }
        }
        
        $url = str_replace(Dever::data() . 'upload/', Dever::config('host')->uploadRes, $file);
        $result = array
        (
            'local' => $file,
            'url' => $url,
        );
        return $result;
    }
}