<?php

namespace App\Http\Controllers\file;

use App\Enums\Common\Code;
use App\Models\File\File;
use App\Models\File\Image as ImageModel;
use Illuminate\Http\Exceptions\HttpResponseException;
use Illuminate\Http\JsonResponse;

class FileController
{
    public $upload_img = [
        //设置静态缓存参数(304)
        'header' => [
            'Cache-Control' => 'max-age=2592000',
            'Pragma' => 'cache',
            'Expires' => "%Expires%", // cache 1 month
            'etag' => "%etag%",
            'Last-Modified' => "%Last-Modified%",
            'Content-Description' => 'File Transfer',
        ],
    ];
    public $path = '';

    public $config = '';

    public $thr_path = '';

    public $request = '';

    public function __construct()
    {
        $this->request = request();
        $this->config = config('filesystems.disks.upload');
        $this->path = $this->config['root'].'/file/';
    }

    /**
     * @param  :(获取文件)$hash
     * @name   :index
     * @author :lyh
     * @method :post
     * @time   :2023/5/9 9:15
     */
    public function index($hash = ''){
        if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) || isset($_SERVER['HTTP_IF_NONE_MATCH'])) {
            header("HTTP/1.1 304 Not Modified");
            exit;
        }
        $file_model = new File();
        $info = $file_model->read(['hash'=>$hash]);
        if ($info === false) {
            $this->response('指定文件不存在!', Code::USER_ERROR);
        }
        $path = $info['path'];
        if (!is_file($path)) {
            $this->response('指定文件已被系统删除!', Code::USER_ERROR);
        }
        $content = file_get_contents($path);
        $header['Content-Length'] = $info['size'];
        return response($content, 200, $header);
    }
    /**
     * 图片上传
     */
    public function upload() {
        $this->request->validate([
            'image'=>['required'],
        ],[
            'image.required'=>'图片必须填写',
        ]);
        $files = $this->request->file('file');
        if (empty($files)) {
            $this->response('没有上传的文件!', 400);
        }
        $type = $this->request->post('type', 'single');
        if ($type == 'multi') {
            return $this->multi($files);
        } else {
            return $this->single($files);
        }
    }
    /**
     * @name :上传
     * @return void
     * @author :liyuhang
     * @method
     */
    public function single($files){
        $hash = hash_file('md5', $files->getPathname());
        //查看文件是否存在
        $fileModel = new File();
        $file_hash = $fileModel->read(['hash'=>$hash]);
        if($file_hash !== false){
            return $hash;
        }
        $url = $this->path;
        $fileName = uniqid().rand(10000,99999).'.'.$files->getClientOriginalExtension();
        $res =  $files->move($url,$fileName);
        if ($res === false) {
            return $this->response($files->getError(), Code::USER_ERROR);
        }
        $data = [
            'path' => $url.'/'.$fileName,
            'created_at' => date('Y-m-d H:i:s',time()),
            'size' => $res->getSize(),
            'hash' => $hash,
            'type'=>$files->getClientOriginalExtension(),
        ];
        $rs = $fileModel->add($data);
        if ($rs === false) {
            return $this->response('添加失败', Code::USER_ERROR);
        }
        return $hash;
    }
    /**
     * 多文件上传
     * @param type $files file对象集合
     * @return type
     */
    private function multi($files) {
        if (!is_array($files)) {
            $files = [$files];
        }
        $save_data = [];
        $data = [];
        foreach ($files as $file) {
            $fileModel = new File();
            $hash = hash_file('md5', $file->getPathname());
            $file_hash = $fileModel->read(['hash'=>$hash]);
            if($file_hash !== false){
                $data[] = $hash;
                continue;
            }
            $url = $this->path;
            $fileName = uniqid().rand(10000,99999).'.'.$files->getClientOriginalExtension();
            $res = $file->move($url,$fileName);
            if ($res === false) {
                return $this->response($file->getError(), Code::USER_ERROR);
            }
            $save_data[] = [
                'path' => $url.'/'.$fileName,
                'created_at' => date('Y-m-d H:i:s',time()),
                'size' => $res->getSize(),
                'hash' => $hash,
                'type'=>$files->getClientOriginalExtension(),
            ];
            $data[] = $hash;
        }
        $fileModel->insert($save_data);
        return $data;
    }
    /**
     * @name 统一返回参数
     * @return JsonResponse
     * @author :liyuhang
     * @method
     */
    public function response($msg = null,string $code = Code::SUCCESS,$data = [],$result_code = 200,$type = 'application/json'): JsonResponse
    {
        $code = Code::fromValue($code);
        $result = [
            'msg' => $msg == ' ' ? $code->description : $msg,
            'code' => $code->value,
            'data' => $data,
        ];
        $this->header['Content-Type'] = $type;
        $response =  response($result,$result_code,$this->header);
        throw new HttpResponseException($response);
    }
}