<?php
  /**
   * @author Thomas Tanghus

   * @copyright 2013-2014 Thomas Tanghus (thomas@tanghus.net)
   *

   * This file is licensed under the Affero General Public License version 3 or
   * later.
   * See the COPYING-README file.
   */
  
  namespace OCA\Contacts\Controller;
  
  use OCA\Contacts\App,
  	OCA\Contacts\JSONResponse,

  	OCA\Contacts\Controller,
  	OCP\AppFramework\Http,
  	OCP\ITags,
  	OCP\IRequest;

  
  /**
   * Controller class for groups/categories
   */
  class GroupController extends Controller {

  	public function __construct($appName, IRequest $request, App $app, ITags $tags) {
  		parent::__construct($appName, $request, $app);
  		$this->app = $app;
  		$this->tagMgr = $tags;
  	}

  	/**
  	 * @NoAdminRequired
  	 */
  	public function getGroups() {

  		$tags = $this->tagMgr->getTags();
  
  		foreach ($tags as &$tag) {

  			try {

  				$ids = $this->tagMgr->getIdsForTag($tag['name']);
  				$tag['contacts'] = $ids;

  			} catch(\Exception $e) {
  				$this->api->log(__METHOD__ . ' ' . $e->getMessage());
  			}
  		}

  		$favorites = $this->tagMgr->getFavorites();

  
  		$groups = array(
  			'categories' => $tags,
  			'favorites' => $favorites,
  			'shared' => \OCP\Share::getItemsSharedWith('addressbook', \OCA\Contacts\Share\Addressbook::FORMAT_ADDRESSBOOKS),

  			'lastgroup' => \OCP\Config::getUserValue(\OCP\User::getUser(), 'contacts', 'lastgroup', 'all'),
  			'sortorder' => \OCP\Config::getUserValue(\OCP\User::getUser(), 'contacts', 'groupsort', ''),

  			);
  
  		return new JSONResponse($groups);
  	}
  
  	/**
  	 * @NoAdminRequired
  	 */
  	public function addGroup() {
  		$name = $this->request->post['name'];
  
  		$response = new JSONResponse();

  
  		if (is_null($name) || $name === "") {

  			$response->bailOut(App::$l10n->t('No group name given.'));
  		}

  		$id = $this->tagMgr->add($name);

  		if ($id === false) {

  			$response->bailOut(App::$l10n->t('Error adding group.'));
  		} else {
  			$response->setParams(array('id'=>$id, 'name' => $name));
  		}

  		return $response;
  	}
  
  	/**
  	 * @NoAdminRequired
  	 */
  	public function deleteGroup() {
  		$name = $this->request->post['name'];
  
  		$response = new JSONResponse();

  		if (is_null($name) || $name === '') {

  			$response->bailOut(App::$l10n->t('No group name given.'));
  			return $response;
  		}

  		try {

  			$ids = $this->tagMgr->getIdsForTag($name);

  		} catch(\Exception $e) {
  			$response->setErrorMessage($e->getMessage());

  			\OCP\Util::writeLog('contacts', __METHOD__.', ' . $e->getMessage(), \OCP\Util::ERROR);

  			return $response;
  		}

  
  		if ($ids !== false) {

  			$backend = $this->app->getBackend('local');

  
  			foreach ($ids as $id) {

  				$contact = $backend->getContact(null, $id, array('noCollection' => true));
  				$obj = \Sabre\VObject\Reader::read(
  					$contact['carddata'],
  					\Sabre\VObject\Reader::OPTION_IGNORE_INVALID_LINES
  				);

  
  				if ($obj) {
  
  					if (!$obj->inGroup($name)) {

  						continue;
  					}

  
  					if ($obj->removeFromGroup($name)) {

  						$backend->updateContact(null, $id, $obj, array('noCollection' => true, 'isBatch' => true));
  					}

  				} else {
  					\OCP\Util::writeLog('contacts', __METHOD__.', could not parse card ' . $id, \OCP\Util::DEBUG);
  				}
  			}

  		}

  		try {

  			$this->tagMgr->delete($name);

  		} catch(\Exception $e) {
  			$response->setErrorMessage($e->getMessage());

  			\OCP\Util::writeLog('contacts', __METHOD__.', ' . $e->getMessage(), \OCP\Util::ERROR);

  		}

  		return $response;
  	}
  
  	/**
  	 * @NoAdminRequired
  	 */
  	public function renameGroup() {
  		$from = $this->request->post['from'];
  		$to = $this->request->post['to'];
  
  		$response = new JSONResponse();

  
  		if (is_null($from) || $from === '') {

  			$response->bailOut(App::$l10n->t('No group name to rename from given.'));
  			return $response;
  		}

  
  		if (is_null($to) || $to === '') {

  			$response->bailOut(App::$l10n->t('No group name to rename to given.'));
  			return $response;
  		}

  		if (!$this->tagMgr->rename($from, $to)) {

  			$response->bailOut(App::$l10n->t('Error renaming group.'));
  			return $response;
  		}

  
  		$ids = $this->tagMgr->getIdsForTag($to);
  
  		if ($ids !== false) {

  			$backend = $this->app->getBackend('local');

  
  			foreach ($ids as $id) {

  				$contact = $backend->getContact(null, $id, array('noCollection' => true));
  				$obj = \Sabre\VObject\Reader::read(
  					$contact['carddata'],
  					\Sabre\VObject\Reader::OPTION_IGNORE_INVALID_LINES
  				);

  
  				if ($obj) {
  
  					if (!isset($obj->CATEGORIES)) {

  						continue;
  					}

  					$obj->CATEGORIES->renameGroup($from, $to);
  					$backend->updateContact(null, $id, $obj, array('noCollection' => true));

  				} else {
  					\OCP\Util::writeLog('contacts', __METHOD__.', could not parse card ' . $id, \OCP\Util::DEBUG);
  				}

  			}

  		}

  		return $response;
  	}
  
  	/**
  	 * @NoAdminRequired
  	 */
  	public function addToGroup() {
  		$response = new JSONResponse();
  		$params = $this->request->urlParams;
  		$categoryId = $params['categoryId'];

  		$categoryName = $this->request->post['name'];

  		$ids = $this->request->post['contactIds'];
  		$response->debug('request: '.print_r($this->request->post, true));

  		if (is_null($categoryId) || $categoryId === '') {
  			throw new \Exception(
  				App::$l10n->t('Group ID missing from request.'),
  				Http::STATUS_PRECONDITION_FAILED
  			);

  		}

  		if (is_null($categoryName) || $categoryName === '') {
  			throw new \Exception(
  				App::$l10n->t('Group name missing from request.'),
  				Http::STATUS_PRECONDITION_FAILED
  			);

  		}

  		if (is_null($ids)) {
  			throw new \Exception(
  				App::$l10n->t('Contact ID missing from request.'),
  				Http::STATUS_PRECONDITION_FAILED
  			);

  		}
  
  		$backend = $this->app->getBackend('local');

  
  		foreach ($ids as $contactId) {

  			$contact = $backend->getContact(null, $contactId, array('noCollection' => true));
  			$obj = \Sabre\VObject\Reader::read(
  				$contact['carddata'],
  				\Sabre\VObject\Reader::OPTION_IGNORE_INVALID_LINES
  			);

  
  			if ($obj) {
  
  				if ($obj->addToGroup($categoryName)) {

  					$backend->updateContact(null, $contactId, $obj, array('noCollection' => true));
  				}

  			}

  			$response->debug('contactId: ' . $contactId . ', categoryId: ' . $categoryId);

  			$this->tagMgr->tagAs($contactId, $categoryId);

  		}
  
  		return $response;
  	}
  
  	/**
  	 * @NoAdminRequired
  	 */
  	public function removeFromGroup() {
  		$response = new JSONResponse();
  		$params = $this->request->urlParams;
  		$categoryId = $params['categoryId'];
  		$categoryname = $this->request->post['name'];
  		$ids = $this->request->post['contactIds'];
  		//$response->debug('request: '.print_r($this->request->post, true));

  		if (is_null($categoryId) || $categoryId === '') {
  			throw new \Exception(
  				App::$l10n->t('Group ID missing from request.'),
  				Http::STATUS_PRECONDITION_FAILED
  			);

  		}

  		if (is_null($categoryName) || $categoryName === '') {
  			throw new \Exception(
  				App::$l10n->t('Group name missing from request.'),
  				Http::STATUS_PRECONDITION_FAILED
  			);
  		}
  
  		if (is_null($ids)) {
  			throw new \Exception(
  				App::$l10n->t('Contact ID missing from request.'),
  				Http::STATUS_PRECONDITION_FAILED
  			);

  		}
  
  		$backend = $this->app->getBackend('local');

  
  		foreach ($ids as $contactId) {

  			$contact = $backend->getContact(null, $contactId, array('noCollection' => true));

  
  			if (!$contact) {

  				$response->debug('Couldn\'t get contact: ' . $contactId);
  				continue;
  			}

  			$obj = \Sabre\VObject\Reader::read(
  				$contact['carddata'],
  				\Sabre\VObject\Reader::OPTION_IGNORE_INVALID_LINES
  			);

  
  			if ($obj) {
  
  				if (!isset($obj->CATEGORIES)) {

  					return $response;
  				}

  
  				if ($obj->removeFromGroup($categoryname)) {

  					$backend->updateContact(null, $contactId, $obj, array('noCollection' => true));
  				}

  			} else {
  				$response->debug('Error parsing contact: ' . $contactId);
  			}

  			$response->debug('contactId: ' . $contactId . ', categoryId: ' . $categoryId);

  			$this->tagMgr->unTag($contactId, $categoryId);

  		}
  
  		return $response;
  	}
  
  }