<?php

namespace app\service;

use think\facade\Config;

class UploadService extends BaseService
{

    public function __construct() {
        parent::__construct();
    }


    /**
     * 上传文件
     * @param mixed          $filename      上传文件
     * @param array|string[] $limitSuffix   限制后缀，默认允许所有后缀
     * @param int            $size          大小限制默认10m；单位b
     * @return array
     */
    public function uploadpic($filename, array $limitSuffix = ['*'], int $size = 0){
        $path = "/pic";
        if(is_string($filename)){
            $file = request()->file($filename);
        }else{
            $file = $filename;
        }
        if(empty($file)){
            throw new \think\Exception('没有上传的文件', 400);
        }

        $upload = config('upload');
        $size = $size ?: ((int)$upload['maxsize'] * 1024 * 1024);

        $fileInfo = [];
        $fileInfo['name'] = $file->getOriginalName();
        $fileInfo['type'] = $file->getOriginalMime();
        $fileInfo['tmp_name'] = $file->getPathname();
        $fileInfo['size'] = $file->getSize();

        if($fileInfo['size'] > $size){
            throw new \think\Exception('没有上传的文件', 400);
        }

        $suffix = strtolower(pathinfo($fileInfo['name'], PATHINFO_EXTENSION));
        $suffix = $suffix && preg_match('/^[a-zA-Z0-9]+$/', $suffix) ? $suffix : 'file';
        $mimetypeArr = explode(',', strtolower($upload['mimetype']));
        $typeArr = explode('/', $fileInfo['type']);

        if ($limitSuffix != ['*'] && !in_array($suffix, $limitSuffix)){
            throw new \think\Exception('该文件类型不可上传', 400);
        }
        //禁止上传PHP和HTML文件
        if (in_array($fileInfo['type'], ['text/x-php', 'text/html']) || in_array($suffix, ['php', 'html', 'htm'])) {
            throw new \think\Exception('该文件类型不可上传', 400);
        }

        //验证文件后缀
        if ($upload['mimetype'] !== '*' &&
            (!in_array($suffix, $mimetypeArr) ||
                (stripos($upload['mimetype'], $typeArr[1]) !== false &&
                    (!in_array($typeArr[1], $mimetypeArr))))) {
            throw new \think\Exception('该文件类型不可上传', 400);
        }
        //验证是否为图片文件
        $imagewidth = $imageheight = 0;
        if (in_array($typeArr[1], explode('/', $fileInfo['type']))) {
            $imgInfo = getimagesize($fileInfo['tmp_name']);
            if (!$imgInfo || !isset($imgInfo[0]) || !isset($imgInfo[1])) {
                throw new \think\Exception('不是图片文件', 400);
            }
            $imagewidth = isset($imgInfo[0]) ? $imgInfo[0] : $imagewidth;
            $imageheight = isset($imgInfo[1]) ? $imgInfo[1] : $imageheight;
        }

        //上传图片
        $savename = false;
        try {
            $savename = upload_file($file, 'public', $path);    //保存用；存数据库不需要拼接Config::get('app.app_host')
            $showname = trim(Config::get('app.cdnurl'), '/') . $savename; //展示用；
        } catch (\Exception $e) {
            $this->log->info($e->getMessage());
            throw new \think\Exception('上传失败', 400);
        }
        return ['img' => $savename, 'show_img' => $showname];

    }


}