<?php
namespace app\index\controller;

use Grafika\Color;
use Grafika\Grafika;
use think\Controller;

/**
 * composer require kosinix/grafika
 * https://github.com/kosinix/grafika/
 */
class Sharecode extends Controller
{
    /**
     * 獲取使用者的推廣圖片
     * @param  integer $uid      [UID]
     * @param  string  $text     [姓名]
     * @param  string  $code_url [帶http的二維碼地址]
     * @param  string  $head_url [帶http的頭像地址]
     * @return [str]             [本地儲存絕對路徑]
     */
    public function make_image($uid, $text, $code_url, $head_url)
    {
        $code_url  = $code_url;
        $code_path = ROOT_PATH . 'public/static/' . $uid . "code.jpg";
        $this->download($code_url, $code_path);
        $head_url  = $head_url;
        $head_path = ROOT_PATH . 'public/static/' . $uid . "head.jpg";
        $this->download($head_url, $head_path);
        $text   = $text;
        // 背景圖片
        $base   = ROOT_PATH . 'public/static/base.jpg';
        $code   = $code_path;
        $head   = $head_path;
        $editor = Grafika::createEditor();
        $editor->open($image1, $base); // 背景
        $editor->open($image2, $code); // 二維碼
        $editor->open($image3, $head); // 頭像
        $editor->blend($image1, $image2, 'normal', 0.9, 'center', 0, 300);
        $editor->blend($image1, $image3, 'normal', 0.9, 'top-left', 80, 100);
        // 字型檔案
        $ttf = ROOT_PATH . '/vendor/topthink/think-captcha/assets/zhttfs/1.ttf';
        $editor->text($image1, $text, 30, 250, 150, new Color("#000000"), $ttf, 0);
        $absolute_path = ROOT_PATH . 'public/static/' . $uid . 'shareimg.jpg';
        $editor->save($image1, $absolute_path);
        unlink($code);
        unlink($head);
        return $absolute_path;
    }
    /**
     * 檔案下載
     * @param  [type] $url           [帶http的檔案地址]
     * @param  [type] $absolute_path [儲存的本地絕對路徑帶副檔名]
     * @return [type]                [description]
     */
    public function download($url, $absolute_path = '')
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
        $file = curl_exec($ch);
        curl_close($ch);
        $resource = fopen($absolute_path, 'a');
        fwrite($resource, $file);
        fclose($resource);
    }
}