<?php
/**
 * ownCloud - News
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later. See the COPYING file.
 *
 * @author Alessandro Cosentino <cosenal@gmail.com>
 * @author Bernhard Posselt <dev@bernhard-posselt.com>
 * @copyright Alessandro Cosentino 2012
 * @copyright Bernhard Posselt 2012, 2014
 */

namespace OCA\News\Controller;

use \OCP\IRequest;
use \OCP\AppFramework\ApiController;
use \OCP\AppFramework\Http;

use \OCA\News\Service\ItemService;
use \OCA\News\Service\ServiceNotFoundException;

class ItemApiController extends ApiController {

    use JSONHttpError;

    private $itemService;
    private $userId;
    private $serializer;

    public function __construct($AppName,
                                IRequest $request,
                                ItemService $itemService,
                                $UserId){
        parent::__construct($AppName, $request);
        $this->itemService = $itemService;
        $this->userId = $UserId;
        $this->serializer = new EntityApiSerializer('items');
    }


    /**
     * @NoAdminRequired
     * @NoCSRFRequired
     * @CORS
     *
     * @param int $type
     * @param int $id
     * @param bool $getRead
     * @param int $batchSize
     * @param int $offset
     * @param bool $oldestFirst
     * @return array|mixed
     */
    public function index($type, $id, $getRead, $batchSize=20, $offset=0,
                          $oldestFirst=false) {
        return $this->serializer->serialize(
            $this->itemService->findAll(
                $id, $type, $batchSize, $offset, $getRead, $oldestFirst,
                $this->userId
            )
        );
    }


    /**
     * @NoAdminRequired
     * @NoCSRFRequired
     * @CORS
     *
     * @param int $type
     * @param int $id
     * @param int $lastModified
     * @return array|mixed
     */
    public function updated($type, $id, $lastModified=0) {
        return $this->serializer->serialize(
            $this->itemService->findAllNew($id, $type, $lastModified,
                                           true, $this->userId)
        );
    }


    private function setRead($isRead, $itemId) {
        try {
            $this->itemService->read($itemId, $isRead, $this->userId);
        } catch(ServiceNotFoundException $ex){
            return $this->error($ex, Http::STATUS_NOT_FOUND);
        }

        return [];
    }


    /**
     * @NoAdminRequired
     * @NoCSRFRequired
     * @CORS
     *
     * @param int $itemId
     * @return array|\OCP\AppFramework\Http\JSONResponse
     */
    public function read($itemId) {
        return $this->setRead(true, $itemId);
    }


    /**
     * @NoAdminRequired
     * @NoCSRFRequired
     * @CORS
     *
     * @param int $itemId
     * @return array|\OCP\AppFramework\Http\JSONResponse
     */
    public function unread($itemId) {
        return $this->setRead(false, $itemId);
    }


    private function setStarred($isStarred, $feedId, $guidHash) {
        try {
            $this->itemService->star(
                $feedId, $guidHash, $isStarred, $this->userId
            );
        } catch(ServiceNotFoundException $ex){
            return $this->error($ex, Http::STATUS_NOT_FOUND);
        }

        return [];
    }


    /**
     * @NoAdminRequired
     * @NoCSRFRequired
     * @CORS
     *
     * @param int $feedId
     * @param string $guidHash
     * @return array|\OCP\AppFramework\Http\JSONResponse
     */
    public function star($feedId, $guidHash) {
        return $this->setStarred(true, $feedId, $guidHash);
    }


    /**
     * @NoAdminRequired
     * @NoCSRFRequired
     * @CORS
     *
     * @param int $feedId
     * @param string $guidHash
     * @return array|\OCP\AppFramework\Http\JSONResponse
     */
    public function unstar($feedId, $guidHash) {
        return $this->setStarred(false, $feedId, $guidHash);
    }


    /**
     * @NoAdminRequired
     * @NoCSRFRequired
     * @CORS
     *
     * @param int $newestItemId
     */
    public function readAll($newestItemId) {
        $this->itemService->readAll($newestItemId, $this->userId);
    }


    private function setMultipleRead($isRead, $items) {
        foreach($items as $id) {
            try {
                $this->itemService->read($id, $isRead, $this->userId);
            } catch(ServiceNotFoundException $ex) {
                continue;
            }
        }
    }


    /**
     * @NoAdminRequired
     * @NoCSRFRequired
     * @CORS
     *
     * @param int[] item ids
     */
    public function readMultiple($items) {
        $this->setMultipleRead(true, $items);
    }


    /**
     * @NoAdminRequired
     * @NoCSRFRequired
     * @CORS
     *
     * @param int[] item ids
     */
    public function unreadMultiple($items) {
        $this->setMultipleRead(false, $items);
    }


    private function setMultipleStarred($isStarred, $items) {
        foreach($items as $item) {
            try {
                $this->itemService->star($item['feedId'], $item['guidHash'],
                                               $isStarred, $this->userId);
            } catch(ServiceNotFoundException $ex) {
                continue;
            }
        }
    }


    /**
     * @NoAdminRequired
     * @NoCSRFRequired
     * @CORS
     *
     * @param int[] item ids
     */
    public function starMultiple($items) {
        $this->setMultipleStarred(true, $items);
    }


    /**
     * @NoAdminRequired
     * @NoCSRFRequired
     * @CORS
     *
     * @param int[] item ids
     */
    public function unstarMultiple($items) {
        $this->setMultipleStarred(false, $items);
    }


}