163 lines
4.2 KiB
PHP
Executable File
163 lines
4.2 KiB
PHP
Executable File
<?php
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namespace app\common\service\storage\engine;
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use think\Request;
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use think\Exception;
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use think\File;
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/**
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* 存储引擎抽象类
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* Class server
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* @package app\common\library\storage\drivers
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*/
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abstract class Server
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{
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protected $file;
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protected $error;
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protected $fileName;
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protected $fileInfo;
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// 是否为内部上传
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protected $isInternal = false;
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/**
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* 构造函数
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* Server constructor.
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*/
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protected function __construct()
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{
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}
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/**
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* 设置上传的文件信息
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* @param string $name
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* @throws Exception
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*/
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public function setUploadFile($name)
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{
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// 接收上传的文件
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$this->file = request()->file($name);
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if (empty($this->file)) {
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throw new Exception('未找到上传文件的信息');
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}
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// 校验上传文件后缀
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$limit = array_merge(config('project.file_image'), config('project.file_video'), config('project.file_file'));
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if (!in_array(strtolower($this->file->extension()), $limit)) {
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throw new Exception('不允许上传' . $this->file->extension() . '后缀文件');
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}
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// 文件信息
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$this->fileInfo = [
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'ext' => $this->file->extension(),
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'size' => $this->file->getSize(),
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'mime' => $this->file->getMime(),
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'name' => $this->file->getOriginalName(),
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'realPath' => $this->file->getRealPath(),
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];
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// 生成保存文件名
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$this->fileName = $this->buildSaveName();
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}
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/**
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* 设置上传的文件信息
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* @param string $filePath
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*/
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public function setUploadFileByReal($filePath)
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{
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// 设置为系统内部上传
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$this->isInternal = true;
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// 内部上传的是磁盘文件，不是 HTTP UploadedFile。这里统一成与
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// 普通上传相同的存储契约：云存储需要 realPath，本地存储需要 File 对象。
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$this->file = new File($filePath);
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$realPath = $this->file->getRealPath();
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if ($realPath === false || !$this->file->isReadable()) {
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throw new Exception('内部上传文件不可读取');
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}
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// 文件信息
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$this->fileInfo = [
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'ext' => strtolower($this->file->getExtension()),
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'size' => $this->file->getSize(),
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'mime' => $this->file->getMime(),
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'name' => basename($filePath),
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'realPath' => $realPath,
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'tmp_name' => $realPath,
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'error' => UPLOAD_ERR_OK,
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];
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// 生成保存文件名
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$this->fileName = $this->buildSaveName();
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}
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/**
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* Notes: 抓取网络资源
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* @param $url
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* @param $key
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* @author 张无忌(2021/3/2 14:15)
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* @return mixed
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*/
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abstract protected function fetch($url, $key);
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/**
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* 文件上传
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* @param $save_dir (保存路径)
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* @return mixed
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*/
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abstract protected function upload($save_dir);
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/**
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* 文件删除
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* @param $fileName
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* @return mixed
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*/
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abstract protected function delete($fileName);
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/**
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* 返回上传后文件路径
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* @return mixed
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*/
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abstract public function getFileName();
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/**
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* 返回文件信息
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* @return mixed
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*/
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public function getFileInfo()
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{
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return $this->fileInfo;
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}
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protected function getRealPath()
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{
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$realPath = $this->fileInfo['realPath'] ?? '';
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if (!is_string($realPath) || $realPath === '' || !is_file($realPath)) {
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throw new Exception('上传文件真实路径无效');
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}
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return $realPath;
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}
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/**
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* 返回错误信息
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* @return mixed
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*/
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public function getError()
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{
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return $this->error;
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}
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/**
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* 生成保存文件名
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*/
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private function buildSaveName()
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{
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// 要上传图片的本地路径
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$realPath = $this->getRealPath();
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// 扩展名
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$ext = pathinfo($this->getFileInfo()['name'], PATHINFO_EXTENSION);
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// 自动生成文件名
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return date('YmdHis') . substr(md5($realPath), 0, 5)
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. str_pad(rand(0, 9999), 4, '0', STR_PAD_LEFT) . ".{$ext}";
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}
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}
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