<?php
/**
 * Invoice Ninja (https://invoiceninja.com).
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2023. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://www.elastic.co/licensing/elastic-license
 */

namespace App\Http\Controllers;

use App\Exceptions\FilePermissionsFailure;
use App\Utils\Ninja;
use App\Utils\Traits\AppSetup;
use App\Utils\Traits\ClientGroupSettingsSaver;
use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Support\Facades\Artisan;
use Illuminate\Support\Facades\Storage;

class SelfUpdateController extends BaseController
{
    use DispatchesJobs;
    use ClientGroupSettingsSaver;
    use AppSetup;

    private bool $use_tar = false;

    private string $filename = 'invoiceninja.zip';

    private array $purge_file_list = [
        'bootstrap/cache/compiled.php',
        'bootstrap/cache/config.php',
        'bootstrap/cache/packages.php',
        'bootstrap/cache/services.php',
        'bootstrap/cache/routes-v7.php',
        'bootstrap/cache/livewire-components.php',
    ];

    public function __construct()
    {
    }

    public function update()
    {
        set_time_limit(0);
        define('STDIN', fopen('php://stdin', 'r'));

        if (Ninja::isHosted()) {
            return response()->json(['message' => ctrans('texts.self_update_not_available')], 403);
        }

        if(request()->has('tar')) {
            $this->use_tar = true;
            $this->filename = 'invoiceninja.tar';
        }

        nlog('Test filesystem is writable');

        $this->testWritable();

        nlog('Clear cache directory');

        $this->clearCacheDir();

        nlog('copying release file');

        // if (copy($this->getDownloadUrl(), storage_path('app/invoiceninja.zip'))) {
        if (copy($this->getDownloadUrl(), storage_path("app/{$this->filename}"))) {
            nlog('Copied file from URL');
        } else {
            return response()->json(['message' => 'Download not yet available. Please try again shortly.'], 410);
        }

        nlog('Finished copying');

        if($this->use_tar) {
            $file = Storage::disk('local')->path($this->filename);

            nlog('Extracting tar');

            $phar = new \PharData($file);
            $phar->extractTo(base_path());

            nlog('Finished extracting files');

            unlink($file);
        }
        else {
            $this->extractUsingZip();
        }

        nlog('Deleted release zip file');

        foreach ($this->purge_file_list as $purge_file_path) {
            $purge_file = base_path($purge_file_path);
            if (file_exists($purge_file)) {
                unlink($purge_file);
            }
        }

        nlog('Removing cache files');

        Artisan::call('clear-compiled');
        Artisan::call('route:clear');
        Artisan::call('view:clear');
        Artisan::call('migrate', ['--force' => true]);
        Artisan::call('config:clear');

        $this->buildCache(true);

        nlog('Called Artisan commands');

        return response()->json(['message' => 'Update completed'], 200);
    }

    private function extractUsingZip()
    {

        $file = Storage::disk('local')->path($this->filename);

        nlog('Extracting zip');

        $zipFile = new \PhpZip\ZipFile();
        $zipFile->openFile($file);
        $zipFile->deleteFromName(".htaccess");
        $zipFile->rewrite();
        $zipFile->extractTo(base_path());
        $zipFile->close();
        $zipFile = null;
                
        unlink($file);

    }


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

    //     if (! is_dir($dir) || is_link($dir)) {
    //         return unlink($dir);
    //     }
    //     foreach (scandir($dir) as $item) {
    //         if ($item == '.' || $item == '..') {
    //             continue;
    //         }
    //         if (! $this->deleteDirectory($dir.'/'.$item)) {
    //             if (! $this->deleteDirectory($dir.'/'.$item)) {
    //                 return false;
    //             }
    //         }
    //     }

    //     return rmdir($dir);
    // }

    // private function postHookUpdate()
    // {
    //     if (config('ninja.app_version') == '5.3.82') {
    //         Client::withTrashed()->cursor()->each(function ($client) {
    //             $entity_settings = $this->checkSettingType($client->settings);
    //             $entity_settings->md5 = md5(time());
    //             $client->settings = $entity_settings;
    //             $client->save();
    //         });
    //     }
    // }

    private function clearCacheDir()
    {
        $directoryIterator = new \RecursiveDirectoryIterator(base_path('bootstrap/cache'), \RecursiveDirectoryIterator::SKIP_DOTS);

        foreach (new \RecursiveIteratorIterator($directoryIterator) as $file) {
            unlink(base_path('bootstrap/cache/').$file->getFileName());
        }

        $directoryIterator = null;
    }

    private function testWritable()
    {
        $directoryIterator = new \RecursiveDirectoryIterator(base_path(), \RecursiveDirectoryIterator::SKIP_DOTS);

        foreach (new \RecursiveIteratorIterator($directoryIterator) as $file) {
            if (strpos($file->getPathname(), '.git') !== false) {
                continue;
            }

            if ($file->isFile() && ! $file->isWritable()) {

                nlog("Cannot update system because {$file->getFileName()} is not writable");
                throw new FilePermissionsFailure("Cannot update system because {$file->getFileName()} is not writable");

            }
        }

        $directoryIterator = null;
        
        return true;
    }

    public function checkVersion()
    {
        return trim(file_get_contents(config('ninja.version_url')));
    }

    private function getDownloadUrl()
    {
        $version = $this->checkVersion();

        if(request()->has('tar'))
            return "https://github.com/invoiceninja/invoiceninja/releases/download/v{$version}/invoiceninja.tar";

        return "https://github.com/invoiceninja/invoiceninja/releases/download/v{$version}/invoiceninja.zip";

    }
}