<?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\ImageResponse,
  	OCA\Contacts\Utils\Properties,

  	OCA\Contacts\Utils\TemporaryPhoto,
  	OCA\Contacts\Controller,
  	OCP\IRequest,
  	OCP\ICache;

  
  /**
   * Controller class For Contacts
   */
  class ContactPhotoController extends Controller {
  
  	/**

  	 * @var \OCP\ICache
  	 */
  	protected $cache;
  
  	public function __construct($appName, IRequest $request, App $app, ICache $cache) {
  		parent::__construct($appName, $request, $app);
  		$this->cache = $cache;
  	}
  
  	/**

  	 * @NoAdminRequired
  	 * @NoCSRFRequired
  	 */
  	public function getPhoto($maxSize = 170) {
  		// TODO: Cache resized photo
  		$params = $this->request->urlParams;
  		$etag = null;

  		$addressBook = $this->app->getAddressBook($params['backend'], $params['addressBookId']);
  		$contact = $addressBook->getChild($params['contactId']);

  		$tempPhoto = TemporaryPhoto::create(
  			$this->cache,
  			TemporaryPhoto::PHOTO_CURRENT,
  			$contact
  		);

  		if($tempPhoto->isValid()) {
  			$image = $tempPhoto->getPhoto();

  			$response = new ImageResponse($image);
  			$lastModified = $contact->lastModified();
  			// Force refresh if modified within the last minute.
  			if(!is_null($lastModified)) {
  				$response->setLastModified(\DateTime::createFromFormat('U', $lastModified) ?: null);
  			}
  			if(!is_null($etag)) {
  				$response->setETag($etag);
  			}
  			if ($image->width() > $maxSize || $image->height() > $maxSize) {
  				$image->resize($maxSize);
  			}
  			return $response;
  		} else {

  			return array("data"=> array("FN"=> $contact->getDisplayName()));

  		}
  	}
  
  	/**
  	 * Uploads a photo and saves in oC cache
  	 * @return JSONResponse with data.tmp set to the key in the cache.
  	 *
  	 * @NoAdminRequired

  	 */
  	public function uploadPhoto() {
  		$params = $this->request->urlParams;

  		$response = new JSONResponse();

  		$tempPhoto = TemporaryPhoto::create(
  			$this->cache,
  			TemporaryPhoto::PHOTO_UPLOADED,
  			$this->request
  		);

  		return $response->setParams(array(
  			'tmp'=>$tempPhoto->getKey(),
  			'metadata' => array(
  				'contactId'=> $params['contactId'],
  				'addressBookId'=> $params['addressBookId'],
  				'backend'=> $params['backend'],
  			),

  		));

  	}
  
  	/**
  	 * Saves the photo from the contact being edited to oC cache
  	 * @return JSONResponse with data.tmp set to the key in the cache.
  	 *
  	 * @NoAdminRequired
  	 * @NoCSRFRequired
  	 */
  	public function cacheCurrentPhoto() {
  		$params = $this->request->urlParams;
  		$response = new JSONResponse();

  		$addressBook = $this->app->getAddressBook($params['backend'], $params['addressBookId']);
  		$contact = $addressBook->getChild($params['contactId']);

  		$tempPhoto = TemporaryPhoto::create(
  			$this->cache,
  			TemporaryPhoto::PHOTO_CURRENT,
  			$contact
  		);

  		return $response->setParams(array(
  			'tmp'=>$tempPhoto->getKey(),

  			'metadata' => array(
  				'contactId'=> $params['contactId'],
  				'addressBookId'=> $params['addressBookId'],
  				'backend'=> $params['backend'],
  			),
  		));

  	}
  
  	/**
  	 * Saves the photo from ownCloud FS to oC cache
  	 * @return JSONResponse with data.tmp set to the key in the cache.
  	 *
  	 * @NoAdminRequired
  	 * @NoCSRFRequired
  	 */
  	public function cacheFileSystemPhoto() {
  		$params = $this->request->urlParams;

  		$response = new JSONResponse();
  
  		if(!isset($this->request->get['path'])) {
  			$response->bailOut(App::$l10n->t('No photo path was submitted.'));
  		}

  		$tempPhoto = TemporaryPhoto::create(
  			$this->cache,
  			TemporaryPhoto::PHOTO_FILESYSTEM,
  			$this->request->get['path']
  		);

  		return $response->setParams(array(
  			'tmp'=>$tempPhoto->getKey(),

  			'metadata' => array(
  				'contactId'=> $params['contactId'],
  				'addressBookId'=> $params['addressBookId'],
  				'backend'=> $params['backend'],
  			),
  		));

  	}
  
  	/**
  	 * Get a photo from the oC cache for cropping.
  	 * @NoAdminRequired
  	 * @NoCSRFRequired
  	 */
  	public function getTempPhoto() {
  		$params = $this->request->urlParams;
  		$tmpkey = $params['key'];

  		$tmpPhoto = new TemporaryPhoto($this->cache, $tmpkey);
  		$image = $tmpPhoto->getPhoto();

  		if($image->valid()) {
  			$response = new ImageResponse($image);
  			return $response;
  		} else {
  			$response = new JSONResponse();
  			return $response->bailOut('Error getting temporary photo');
  		}
  	}
  
  	/**
  	 * Get a photo from the oC and crops it with the suplied geometry.
  	 * @NoAdminRequired
  	 * @NoCSRFRequired
  	 */
  	public function cropPhoto() {
  		$params = $this->request->urlParams;

  		$x = $this->params('x', 0);
  		$y = $this->params('y', 0);
  		$w = $this->params('w', -1);
  		$h = $this->params('h', -1);

  		$tmpkey = $params['key'];

  		$addressBook = $this->app->getAddressBook($params['backend'], $params['addressBookId']);

  		$contact = $addressBook->getChild($params['contactId']);
  
  		$response = new JSONResponse();

  		$tmpPhoto = new TemporaryPhoto($this->cache, $tmpkey);
  		$image = $tmpPhoto->getPhoto();
  		if(!$image || !$image->valid()) {
  			return $response->bailOut(App::$l10n->t('Error loading image from cache'));

  		}
  
  		$w = ($w !== -1 ? $w : $image->width());
  		$h = ($h !== -1 ? $h : $image->height());

  		$image->crop($x, $y, $w, $h);

  		if (!$contact->setPhoto($image)) {
  			$tmpPhoto->remove($tmpkey);
  			return $response->bailOut(App::$l10n->t('Error getting PHOTO property.'));

  		}

  		if(!$contact->save()) {
  			return $response->bailOut(App::$l10n->t('Error saving contact.'));
  		}
  
  		$thumbnail = Properties::cacheThumbnail(
  			$params['backend'],
  			$params['addressBookId'],
  			$params['contactId'],

  			$image,
  			$contact

  		);
  
  		$response->setData(array(
  			'status' => 'success',
  			'data' => array(
  				'id' => $params['contactId'],
  				'thumbnail' => $thumbnail,
  			)
  		));

  		$tmpPhoto->remove($tmpkey);

  
  		return $response;
  	}
  
  }