<?php

class CustomCDN
{
    private $space;
    private $region;
    private $storageType;
    private $accessKey;
    private $secretKey;
    private $public = false;

    public function __construct($space, $region, $storageType, $accessKey, $secretKey)
    {
        $this->space = $space;
        $this->region = $region;
        $this->storageType = $storageType;
        $this->accessKey = $accessKey;
        $this->secretKey = $secretKey;
    }

    public function uploadFile($filePath, $spacePath)
    {
        $file = basename($filePath);
        $date = gmdate('D, d M Y H:i:s T');
        if ($this->public) {
            $acl = "x-amz-acl:public-read";
        } else {
            $acl = "x-amz-acl:private";
        }
        $contentType = $this->getContentType($filePath);
        $storageClass = "x-amz-storage-class:{$this->storageType}";

        $stringToSign = "PUT\n\n{$contentType}\n{$date}\n{$acl}\n{$storageClass}\n/{$this->space}{$spacePath}{$file}";
        $signature = base64_encode(hash_hmac('sha1', $stringToSign, $this->secretKey, true));

        $headers = ["Host: {$this->space}.{$this->region}.digitaloceanspaces.com", "Date: {$date}", "Content-Type: {$contentType}", "{$storageClass}", "{$acl}", "Authorization: AWS {$this->accessKey}:{$signature}"];

        $ch = curl_init("https://{$this->space}.{$this->region}.digitaloceanspaces.com{$spacePath}{$file}");
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_PUT, true);
        curl_setopt($ch, CURLOPT_INFILE, fopen($filePath, 'r'));
        curl_setopt($ch, CURLOPT_INFILESIZE, filesize($filePath));

        $response = curl_exec($ch);
        $error = curl_error($ch);
        curl_close($ch);

        return $error ? $error : $response;
    }

    private function getContentType($filePath)
    {
        $finfo = finfo_open(FILEINFO_MIME_TYPE);
        $mimeType = finfo_file($finfo, $filePath);
        finfo_close($finfo);
        return $mimeType ?: 'application/octet-stream';
    }

    public function setPublic()
    {
        $this->public = true;
    }

    public function setPrivate()
    {
        $this->public = false;
    }
}

?>