Ushio-cn-old/yimian/www/wx/modules/api/models/GoodsQrcodeForm.php

<?php
/**
 * Created by IntelliJ IDEA.
 * User: luwei
 * Date: 2017/9/22
 * Time: 14:53
 */

namespace app\modules\api\models;

use app\utils\GrafikaHelper;
use app\models\Goods;
use app\models\Store;
use Curl\Curl;
use Grafika\Color;
use Grafika\Grafika;
use yii\helpers\VarDumper;

class GoodsQrcodeForm extends ApiModel
{
    public $store_id;
    public $goods_id;
    public $user_id;

    public function rules()
    {
        return [
            [['goods_id'], 'required'],
        ];
    }

    public function search()
    {
        $goods = Goods::findOne($this->goods_id);
        if (!$goods) {
            return [
                'code' => 1,
                'msg' => '商品不存在',
            ];
        }
        $store = Store::findOne($this->store_id);

        $goods_pic_url = $goods->getGoodsPic(0)->pic_url;

        $goods_pic_save_path = \Yii::$app->basePath . '/web/temp/';
        $goods_pic_save_name = md5("v=1.6.2&goods_id={$goods->id}&goods_name={$goods->name}&store_name={$store->name}&user_id={$this->user_id}&goods_pic_url={$goods_pic_url}") . '.jpg';

        $pic_url = str_replace('http://', 'https://', \Yii::$app->request->hostInfo . \Yii::$app->request->baseUrl . '/temp/' . $goods_pic_save_name);
        if (file_exists($goods_pic_save_path . $goods_pic_save_name)) {
            return [
                'code' => 0,
                'data' => [
                    'goods_name' => $goods->name,
                    'pic_url' => $pic_url . '?v=' . time(),
                ],
            ];
        }

        $goods_pic_path = $this->saveTempImage($goods_pic_url);
        if (!$goods_pic_path) {
            return [
                'code' => 1,
                'msg' => '获取商品海报失败：商品图片丢失',
            ];
        }

        $goods_qrcode_dst = \Yii::$app->basePath . '/web/statics/images/goods-qrcode-dst.jpg';
        $font_path = \Yii::$app->basePath . '/web/statics/font/st-heiti-light.ttc';

        $editor = Grafika::createEditor(GrafikaHelper::getSupportEditorLib());
        $editor->open($goods_qrcode, $goods_qrcode_dst);
        $editor->open($goods_pic, $goods_pic_path);

        //获取小程序码图片
        $wxapp_qrcode_file_res = $this->getQrcode($goods->id, $this->user_id);
        if ($wxapp_qrcode_file_res['code'] == 1) {
            unlink($goods_pic_path);
            return [
                'code' => 1,
                'msg' => '获取商品海报失败：获取小程序码失败，' . $wxapp_qrcode_file_res['msg'],
            ];
        }
        $wxapp_qrcode_file_path = $wxapp_qrcode_file_res['file_path'];
        $editor->open($wxapp_qrcode, $wxapp_qrcode_file_path);

        $name_size = 30;
        $name_width = 670;
        //商品名称处理换行
        $name = $this->autowrap($name_size, 0, $font_path, $goods->name, $name_width, 2);
        //加商品名称
        $editor->text($goods_qrcode, $name, $name_size, 40, 750, new Color('#333333'), $font_path, 0);

        //裁剪商品图片
        //$editor->crop($goods_pic, 670, 670, 'smart');
        $editor->resizeFill($goods_pic, 670, 670);
        //附加商品图片
        $editor->blend($goods_qrcode, $goods_pic, 'normal', 1.0, 'top-left', 40, 40);

        //加商品价格
        $editor->text($goods_qrcode, '￥' . $goods->price, 45, 30, 910, new Color('#ff4544'), $font_path, 0);

        //加商城名称
        $editor->text($goods_qrcode, $store->name, 20, 40, 1170, new Color('#888888'), $font_path, 0);

        //调整小程序码图片
        $editor->resizeExactWidth($wxapp_qrcode, 240);
        //附加小程序码图片
        $editor->blend($goods_qrcode, $wxapp_qrcode, 'normal', 1.0, 'top-left', 470, 1040);

        //保存图片
        $editor->save($goods_qrcode, $goods_pic_save_path . $goods_pic_save_name, 'jpeg', 85);

        //删除临时图片
        unlink($goods_pic_path);
        unlink($wxapp_qrcode_file_path);

        return [
            'code' => 0,
            'data' => [
                'goods_name' => $goods->name,
                'pic_url' => $pic_url . '?v=' . time(),
            ],
        ];
    }

    private function getQrcode($goods_id, $user_id)
    {
        $wechat = $this->getWechat();
        $access_token = $wechat->getAccessToken();
        if (!$access_token) {
            return [
                'code' => 1,
                'msg' => $wechat->errMsg,
            ];
        }
        $api = "https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token={$access_token}";
        $curl = new Curl();
        $curl->setOpt(CURLOPT_SSL_VERIFYPEER, false);
        $data = json_encode([
            'scene' => "gid:{$goods_id},uid:{$user_id}",
            'page' => 'pages/goods/goods',
            'width' => 240,
        ]);
        \Yii::trace("GET WXAPP QRCODE:" . $data);
        $curl->post($api, $data);
        if (in_array('Content-Type: image/jpeg', $curl->response_headers)) {
            //返回图片
            return [
                'code' => 0,
                'file_path' => $this->saveTempImageByContent($curl->response),
            ];
        } else {
            //返回文字
            $res = json_decode($curl->response, true);
            return [
                'code' => 1,
                'msg' => $res['errmsg'],
            ];
        }
    }

    /**
     * @param integer $fontsize 字体大小
     * @param integer $angle 角度
     * @param string $fontface 字体名称
     * @param string $string 字符串
     * @param integer $width 预设宽度
     */
    private function autowrap($fontsize, $angle, $fontface, $string, $width, $max_line = null)
    {
        // 这几个变量分别是 字体大小, 角度, 字体名称, 字符串, 预设宽度
        $content = "";
        // 将字符串拆分成一个个单字 保存到数组 letter 中
        $letter = [];
        for ($i = 0; $i < mb_strlen($string, 'UTF-8'); $i++) {
            $letter[] = mb_substr($string, $i, 1, 'UTF-8');
        }
        $line_count = 0;
        foreach ($letter as $l) {
            $teststr = $content . " " . $l;
            $testbox = imagettfbbox($fontsize, $angle, $fontface, $teststr);
            // 判断拼接后的字符串是否超过预设的宽度
            if (($testbox[2] > $width) && ($content !== "")) {
                $line_count++;
                if ($max_line && $line_count >= $max_line) {
                    $content = mb_substr($content, 0, -1, 'UTF-8') . "...";
                    break;
                }
                $content .= "\n";
            }
            $content .= $l;
        }
        return $content;
    }

    //获取网络图片到临时目录
    private function saveTempImage($url)
    {
        $wdcp_patch = false;
        $wdcp_patch_file = \Yii::$app->basePath . '/patch/wdcp.json';
        if (file_exists($wdcp_patch_file)) {
            $wdcp_patch = json_decode(file_get_contents($wdcp_patch_file), true);
            if ($wdcp_patch && in_array(\Yii::$app->request->hostName, $wdcp_patch)) {
                $wdcp_patch = true;
            } else {
                $wdcp_patch = false;
            }
        }
        if ($wdcp_patch) {
            $url = str_replace('http://', 'https://', $url);
        }

        if (!is_dir(\Yii::$app->runtimePath . '/image')) {
            mkdir(\Yii::$app->runtimePath . '/image');
        }
        $save_path = \Yii::$app->runtimePath . '/image/' . md5($url) . '.jpg';
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
        $img = curl_exec($ch);
        curl_close($ch);
        $fp = fopen($save_path, 'w');
        fwrite($fp, $img);
        fclose($fp);
        return $save_path;
    }

    //保存图片内容到临时文件
    private function saveTempImageByContent($content)
    {
        $save_path = \Yii::$app->runtimePath . '/image/' . md5(base64_encode($content)) . '.jpg';
        $fp = fopen($save_path, 'w');
        fwrite($fp, $content);
        fclose($fp);
        return $save_path;
    }
}