<?php
/**
 * ownCloud - gpxedit
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later. See the COPYING file.
 *
 * @author Julien Veyssier <eneiluj@gmx.fr>
 * @copyright Julien Veyssier 2015
 */

namespace OCA\GpxEdit\Controller;

use \OC_App;

use OCP\IURLGenerator;
use OCP\IConfig;

use OCP\AppFramework\Http;
use OCP\AppFramework\Http\RedirectResponse;

use OCP\AppFramework\Http\ContentSecurityPolicy;

use OCP\IRequest;
use OCP\AppFramework\Http\TemplateResponse;
use OCP\AppFramework\Http\DataResponse;
use OCP\AppFramework\Controller;

function delTree($dir) {
    $files = array_diff(scandir($dir), array('.','..'));
    foreach ($files as $file) {
        (is_dir("$dir/$file")) ? delTree("$dir/$file") : unlink("$dir/$file");
    }
    return rmdir($dir);
}

/**
 * Recursive find files from name pattern
 */
function globRecursive($path, $find, $recursive=True) {
    $result = Array();
    $dh = opendir($path);
    while (($file = readdir($dh)) !== false) {
        if (substr($file, 0, 1) === '.') continue;
        $rfile = "{$path}/{$file}";
        if (is_dir($rfile) and $recursive) {
            foreach (globRecursive($rfile, $find) as $ret) {
                array_push($result, $ret);
            }
        } else {
            if (fnmatch($find, $file)){
                array_push($result, $rfile);
            }
        }
    }
    closedir($dh);
    return $result;
}

/*
 * search into all directories in PATH environment variable
 * to find a program and return it if found
 */
function getProgramPath($progname){
    $path_ar = explode(':',getenv('path'));
    foreach ($path_ar as $path){
        $supposed_gpath = $path.'/'.$progname;
        if (file_exists($supposed_gpath) and
            is_executable($supposed_gpath)){
            return $supposed_gpath;
        }
    }
    return null;
}

function endswith($string, $test) {
    $strlen = strlen($string);
    $testlen = strlen($test);
    if ($testlen > $strlen) return false;
    return substr_compare($string, $test, $strlen - $testlen, $testlen) === 0;
}

class PageController extends Controller {

    private $userId;
    private $userfolder;
    private $config;
    private $appVersion;
    private $userAbsoluteDataPath;
    private $shareManager;
    private $dbconnection;
    private $dbtype;
    private $dbdblquotes;
    private $appPath;

    public function __construct($AppName, IRequest $request, $UserId,
                                $userfolder, $config, $shareManager){
        parent::__construct($AppName, $request);
        $this->appVersion = $config->getAppValue('gpxedit', 'installed_version');
        $this->appPath = \OC_App::getAppPath('gpxedit');
        $this->userId = $UserId;
        $this->dbtype = $config->getSystemValue('dbtype');
        // IConfig object
        $this->config = $config;

        if ($this->dbtype === 'pgsql'){
            $this->dbdblquotes = '"';
        }
        else{
            $this->dbdblquotes = '';
        }
        if ($UserId !== '' and $userfolder !== null){
            // path of user files folder relative to DATA folder
            $this->userfolder = $userfolder;
            // absolute path to user files folder
            $this->userAbsoluteDataPath =
                $this->config->getSystemValue('datadirectory').
                rtrim($this->userfolder->getFullPath(''), '/');

            // make cache if it does not exist
            $cachedirpath = $this->userAbsoluteDataPath.'/../cache';
            if (! is_dir($cachedirpath)){
                mkdir($cachedirpath);
            }

            $this->dbconnection = \OC::$server->getDatabaseConnection();
        }
        //$this->shareManager = \OC::$server->getShareManager();
        $this->shareManager = $shareManager;
    }

    /**
     * Welcome page.
     * @NoAdminRequired
     * @NoCSRFRequired
     */
    public function index() {
        $userFolder = \OC::$server->getUserFolder();
        $userfolder_path = $userFolder->getPath();

        // DIRS array population
        $all = $userFolder->search(".gpx");
        $alldirs = Array();
        foreach($all as $file){
            if ($file->getType() === \OCP\Files\FileInfo::TYPE_FILE and
                (
                    endswith($file->getName(), '.gpx') or
                    endswith($file->getName(), '.GPX')
                )
            ){
                $rel_dir = str_replace($userfolder_path, '', dirname($file->getPath()));
                $rel_dir = str_replace('//', '/', $rel_dir);
                if ($rel_dir === ''){
                    $rel_dir = '/';
                }
                if (!in_array($rel_dir, $alldirs)){
                    array_push($alldirs, $rel_dir);
                }
            }
        }

        // PARAMS to view

        sort($alldirs);
        $params = [
            'dirs'=>$alldirs,
            'username'=>$this->userId,
            'gpxedit_version'=>$this->appVersion
        ];
        $response = new TemplateResponse('gpxedit', 'main', $params);
        $csp = new ContentSecurityPolicy();
        $csp->addAllowedImageDomain('*')
            ->addAllowedMediaDomain('*')
            ->addAllowedChildSrcDomain('*')
            ->addAllowedObjectDomain('*')
            ->addAllowedScriptDomain('*')
            //->allowEvalScript('*')
            ->addAllowedConnectDomain('*');
        $response->setContentSecurityPolicy($csp);
        return $response;
    }

    /**
     * 
     * @NoAdminRequired
     * @NoCSRFRequired
     */
    public function getgpx($path) {
        $userFolder = \OC::$server->getUserFolder();
        $cleanpath = str_replace(array('../', '..\\'), '',  $path);
        $gpxContent = '';
        if ($userFolder->nodeExists($cleanpath)){
            $file = $userFolder->get($cleanpath);
            if ($file->getType() === \OCP\Files\FileInfo::TYPE_FILE and
                (endswith($file->getName(), '.GPX') or endswith($file->getName(), '.gpx'))
            ){
                // all ok
            }
            else{
                $file = null;
            }
        }

        if ($file !== null){
            $gpxContent = $file->getContent();
        }

        $response = new DataResponse(
            [
                'gpx'=>$gpxContent
            ]
        );
        $csp = new ContentSecurityPolicy();
        $csp->addAllowedImageDomain('*')
            ->addAllowedMediaDomain('*')
            ->addAllowedConnectDomain('*');
        $response->setContentSecurityPolicy($csp);
        return $response;
    }

    /**
     * 
     * @NoAdminRequired
     * @NoCSRFRequired
     */
    public function savegpx($path, $content) {
        $userFolder = \OC::$server->getUserFolder();
        $cleanpath = str_replace(array('../', '..\\'), '',  $path);
        $status = false;
        if (endswith($cleanpath, '.GPX') or endswith($cleanpath, '.gpx')){
            if ($userFolder->nodeExists($cleanpath)){
                $file = $userFolder->get($cleanpath);
                if ($file->getType() === \OCP\Files\FileInfo::TYPE_FILE and
                    $file->isUpdateable()){
                    $file->putContent($content);
                    $status = true;
                }
                else{
                    $status = 'fiw';
                }
            }
            else{
                $dirpath = dirname($cleanpath);
                $newFileName = basename($cleanpath);
                if ($userFolder->nodeExists($dirpath)){
                    $dir = $userFolder->get($dirpath);
                    if ($dir->getType() === \OCP\Files\FileInfo::TYPE_FOLDER and
                        $dir->isCreatable()){
                        $dir->newFile($newFileName);
                        $dir->get($newFileName)->putContent($content);
                        $status = true;
                    }
                    else{
                        $status = 'fw';
                    }
                }
                else{
                    $status = 'fu';
                }
            }
        }

        $response = new DataResponse(
            [
                'status'=>$status
            ]
        );
        $csp = new ContentSecurityPolicy();
        $csp->addAllowedImageDomain('*')
            ->addAllowedMediaDomain('*')
            ->addAllowedConnectDomain('*');
        $response->setContentSecurityPolicy($csp);
        return $response;
    }

}