<?php
/**
 * ownCloud - Richdocuments App
 *
 * @author Victor Dubiniuk
 * @copyright 2014 Victor Dubiniuk victor.dubiniuk@gmail.com
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later.
 */

namespace OCA\Richdocuments\Controller;

use OCA\Richdocuments\WOPI\DiscoveryManager;
use \OCP\AppFramework\Controller;
use \OCP\IRequest;
use \OCP\IConfig;
use \OCP\IL10N;
use \OCP\AppFramework\Http\ContentSecurityPolicy;
use \OCP\AppFramework\Http\TemplateResponse;
use \OCA\Richdocuments\AppConfig;
use \OCA\Richdocuments\Helper;
use \OC\Files\View;
use \OCP\ICacheFactory;

class DocumentController extends Controller {

	private $uid;
	private $l10n;
	private $settings;
	private $appConfig;
	private $cache;
	/** @var DiscoveryManager */
	private $discoveryManager;
	const ODT_TEMPLATE_PATH = '/assets/odttemplate.odt';

	public function __construct($appName,
								$UserId,
								IRequest $request,
								IConfig $settings,
								AppConfig $appConfig,
								IL10N $l10n,
								ICacheFactory $cache,
								DiscoveryManager $discoveryManager) {
		parent::__construct($appName, $request);
		$this->uid = $UserId;
		$this->l10n = $l10n;
		$this->settings = $settings;
		$this->appConfig = $appConfig;
		$this->cache = $cache->create($appName);
		$this->discoveryManager = $discoveryManager;
	}

	/**
	 * @NoAdminRequired
	 * @NoCSRFRequired
	 *
	 * @return TemplateResponse
	 */
	public function index(){
		$response = new TemplateResponse('richdocuments', 'documents');
		$policy = new ContentSecurityPolicy();
		$policy->addAllowedFrameDomain($this->appConfig->getAppValue('wopi_url'));
		$response->setContentSecurityPolicy($policy);
		return $response;
	}

	/**
	 * @NoAdminRequired
	 */
	public function create(){
		$mimetype = $this->request->post['mimetype'];
		$filename = $this->request->post['filename'];
		$dir = $this->request->post['dir'];

		$view = new View('/' . $this->uid . '/files');
		if (!$dir){
			$dir = '/';
		}

		$basename = $this->l10n->t('New Document.odt');
		switch ($mimetype) {
			case 'application/vnd.oasis.opendocument.spreadsheet':
				$basename = $this->l10n->t('New Spreadsheet.ods');
				break;
			case 'application/vnd.oasis.opendocument.presentation':
				$basename = $this->l10n->t('New Presentation.odp');
				break;
			case 'application/vnd.openxmlformats-officedocument.wordprocessingml.document':
				$basename = $this->l10n->t('New Document.docx');
				break;
			case 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet':
				$basename = $this->l10n->t('New Spreadsheet.xlsx');
				break;
			case 'application/vnd.openxmlformats-officedocument.presentationml.presentation':
				$basename = $this->l10n->t('New Presentation.pptx');
				break;
			default:
				// to be safe
				$mimetype = 'application/vnd.oasis.opendocument.text';
				break;
		}

		if (!$filename){
			$path = Helper::getNewFileName($view, $dir . '/' . $basename);
		} else {
			$path = $dir . '/' . $filename;
		}

		$content = '';
		if (class_exists('\OC\Files\Type\TemplateManager')){
			$manager = \OC_Helper::getFileTemplateManager();
			$content = $manager->getTemplate($mimetype);
		}

		if (!$content){
			$content = file_get_contents(dirname(__DIR__) . self::ODT_TEMPLATE_PATH);
		}

		$discovery_parsed = null;
		try {
			$discovery = $this->discoveryManager->get();

			$loadEntities = libxml_disable_entity_loader(true);
			$discovery_parsed = simplexml_load_string($discovery);
			libxml_disable_entity_loader($loadEntities);

			if ($discovery_parsed === false) {
				$this->cache->remove('discovery.xml');
				$wopiRemote = $this->getWopiUrl(false);

				return array(
					'status' => 'error',
					'message' => $this->l10n->t('Collabora Online: discovery.xml from "%s" is not a well-formed XML string.', array($wopiRemote)),
					'hint' => $this->l10n->t('Please contact the "%s" administrator.', array($wopiRemote))
				);
			}
		}
		catch (ResponseException $e) {
			return array(
				'status' => 'error',
				'message' => $e->getMessage(),
				'hint' => $e->getHint()
			);
		}

		if ($content && $view->file_put_contents($path, $content)){
			$info = $view->getFileInfo($path);
			$ret = $this->getWopiSrcUrl($discovery_parsed, $mimetype);
			$response =  array(
				'status' => 'success',
				'fileid' => $info['fileid'],
				'urlsrc' => $ret['urlsrc'],
				'action' => $ret['action'],
				'lolang' => $this->settings->getUserValue($this->uid, 'core', 'lang', 'en'),
				'data' => \OCA\Files\Helper::formatFileInfo($info)
			);
		} else {
			$response =  array(
				'status' => 'error',
				'message' => (string) $this->l10n->t('Can\'t create document')
			);
		}
		return $response;
	}
}