<?php
define( 'NOTIFIER_THEME_FOLDER_NAME', 'vadimarketv4' );
class updateWPTheme
{

    function __construct()
    {
        $this->oldTheme = wp_get_theme();
        $this->oldThemeName = $this->oldTheme->get('Name');
        $this->oldThemeVersion = $this->oldTheme->get('Version');
        $this->oldthemePath = get_parent_theme_file_path();
    }

    public function backupTheme()
    {
        // Backup and compress to zip the theme
        $themeName = $this->oldThemeName;
        $themeVersion = $this->oldThemeVersion;
        $themePath = get_parent_theme_file_path();
        $bugun = date('d-m-Y--H-i');
        $zipPath = get_theme_root() . '/' . NOTIFIER_THEME_FOLDER_NAME . '-' . $themeVersion . '--' . $bugun . '_old.zip';
        $zip = new ZipArchive;
        $zip->open($zipPath, ZipArchive::CREATE);
        $files = new RecursiveIteratorIterator(
            new RecursiveDirectoryIterator($themePath),
            RecursiveIteratorIterator::LEAVES_ONLY
        );
        foreach ($files as $name => $file) {
            if (!$file->isDir()) {
                $filePath = $file->getRealPath();
                $relativePath = NOTIFIER_THEME_FOLDER_NAME . '/' . substr($filePath, strlen($themePath));
                $zip->addFile($filePath, $relativePath);
            }
        }
        $zip->close();
    }

    private function deleteDirectory($dir)
    {
        if (!file_exists($dir)) {
            return true;
        }

        if (!is_dir($dir)) {
            return unlink($dir);
        }

        foreach (scandir($dir) as $item) {
            if ($item == '.' || $item == '..') {
                continue;
            }

            if (!$this->deleteDirectory($dir . DIRECTORY_SEPARATOR . $item)) {
                return false;
            }
        }

        return rmdir($dir);
    }

    public function installLatestThemeVersion()
    {
	    $klasor = NOTIFIER_THEME_FOLDER_NAME;
        $gelberi = curl_init('https://demo.temavadisi.com/veriler/guncelurl.php?tema='.$klasor);
        curl_setopt($gelberi, CURLOPT_RETURNTRANSFER, true);
        $cekdostum = curl_exec($gelberi);
        curl_close($gelberi);
        // Install the latest version of the theme
        $oldthemePath = $this->oldthemePath;
        $oldThemeName = $this->oldThemeName;
        $themesLocation = get_theme_root();

        $zipLocation = $themesLocation . '/' . $oldThemeName . '.zip';
        $downloadLatestTheme = file_put_contents($zipLocation, fopen($cekdostum , 'r')); // Download the latest theme version
        $this->deleteDirectory($oldthemePath); // Delete the old theme
        $zip = new ZipArchive;
        $zip->open($zipLocation);

        $newThemeName = $zip->getNameIndex(0);

        $zip->extractTo($themesLocation);
        $zip->close();
        // delete the zip file
        unlink($zipLocation);

        // Activate if not active
        if ($oldThemeName != $newThemeName) {
            switch_theme($newThemeName);
        }

        // redirect to the theme options page
        wp_redirect(admin_url('admin.php?page=temavadisi-panel'));
        exit;
    }
}

//post data and proccess

if (isset($_POST['updateTheme'])) {
    $updateTheme = new updateWPTheme();
    $updateTheme->backupTheme();
    $updateTheme->installLatestThemeVersion();
}