<?php


namespace app\api\controller;


use app\common\controller\Api;
use app\common\exception\UploadException;
use app\common\library\Upload;
use app\common\model\Attachment;
use think\Exception;

class Resource extends Api
{

    protected $noNeedLogin = ["*"];

    private function compressedImage($imgsrc, $imgdst)
    {
        if (filesize($imgsrc) < 150000) {
            return;
        }
        list($width, $height, $type) = getimagesize($imgsrc);
        $new_width = $width > 800 ? 800 : $width;//图片宽度的限制
        $new_height = $height > 800 ? ceil($height * 800 / $width) : $height;//自适应匹配图片高度
        switch ($type) {
            case 1:
                $giftype = $this->check_gifcartoon($imgsrc);
                if ($giftype) {
                    header('Content-Type:image/gif');
                    $image_wp = imagecreatetruecolor($new_width, $new_height);
                    $image = imagecreatefromgif($imgsrc);
                    imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
                    //90代表的是质量、压缩图片容量大小
                    imagejpeg($image_wp, $imgdst, 90);
                    imagedestroy($image_wp);
                    imagedestroy($image);
                }
                break;
            case 2:
                header('Content-Type:image/jpeg');
                $image_wp = imagecreatetruecolor($new_width, $new_height);
                $image = imagecreatefromjpeg($imgsrc);
                imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
                //90代表的是质量、压缩图片容量大小
                imagejpeg($image_wp, $imgdst, 90);
                imagedestroy($image_wp);
                imagedestroy($image);
                break;
            case 3:
                header('Content-Type:image/png');
                $image_wp = imagecreatetruecolor($new_width, $new_height);
                $image = imagecreatefrompng($imgsrc);
                imagecopyresampled($image_wp, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
                //90代表的是质量、压缩图片容量大小
                imagejpeg($image_wp, $imgdst, 90);
                imagedestroy($image_wp);
                imagedestroy($image);
                break;
        }
    }

    private function check_gifcartoon($image_file)
    {
        $fp = fopen($image_file, 'rb');
        $image_head = fread($fp, 1024);
        fclose($fp);
        return preg_match("/" . chr(0x21) . chr(0xff) . chr(0x0b) . 'NETSCAPE2.0' . "/", $image_head) ? false : true;
    }

    public function upload()
    {
        //默认普通上传文件
        $file = $this->request->file('file');
        try {
            $upload = new Upload($file);
            $attachment = $upload->upload();
        } catch (UploadException $e) {
            $this->error($e->getMessage());
        }
        $image_url = join("/", explode("\\", dirname(realpath(APP_PATH)))) . "/public" . $attachment->url;
        //$this->compressedImage($image_url, $image_url);
        $this->success([
            'url' => $attachment->url,
        ]);
    }


    public function batch_compress($start_index = 0, $end_index = 10, $filenames = [])
    {
        $res = [
            "dir" => [],
            "images" => [],
            "errors" => [],
        ];
        $base = join("/", explode("\\", dirname(realpath(APP_PATH)))) . "/public/uploads";

        $handler = opendir($base);
        $files = $filenames;
//        while (($filename = readdir($handler)) !== false) {
//            if (strpos($filename, ".") === false) {
//                $files[] = $filename;
//            }
//        }
//        closedir($handler);
        $res["dir"] = $files;
        $images = [];
        for ($i = $start_index; $i <= $end_index; $i++) {
            $file_name = isset($files[$i]) ? $files[$i] : null;
            if (null === $file_name)
                continue;
            $handler = opendir($base . "/" . $file_name);
            while (($filename = readdir($handler)) !== false) {
                if (strlen($filename) > 3) {
                    $images[] = $base . "/" . $file_name . "/" . $filename;
                }
            }
            closedir($handler);
        }
        $res["images"] = $images;

        foreach ($images as $item) {
            try {
                $this->compressedImage($item, $item);
            } catch (Exception $e) {
            $res["errors"][] = "$item -> {$e->getMessage()}";
            }
        }
        $this->success($res);
    }
}