org.magnum.mobilecloud.video.VideoController.java Source code

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Here is the source code for org.magnum.mobilecloud.video.VideoController.java

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/*
 * 
 * Copyright 2014 Jules White
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

package org.magnum.mobilecloud.video;

import java.security.Principal;
import java.util.ArrayList;
import java.util.Collection;

import javax.servlet.http.HttpServletResponse;

import org.apache.http.HttpStatus;
import org.magnum.mobilecloud.video.client.VideoSvcApi;
import org.magnum.mobilecloud.video.repository.Video;
import org.magnum.mobilecloud.video.repository.VideoRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class VideoController {

    /**
     * You will need to create one or more Spring controllers to fulfill the
     * requirements of the assignment. If you use this file, please rename it
     * to something other than "AnEmptyController"
     * 
     * 
        ________  ________  ________  ________          ___       ___  ___  ________  ___  __       
       |\   ____\|\   __  \|\   __  \|\   ___ \        |\  \     |\  \|\  \|\   ____\|\  \|\  \     
       \ \  \___|\ \  \|\  \ \  \|\  \ \  \_|\ \       \ \  \    \ \  \\\  \ \  \___|\ \  \/  /|_   
        \ \  \  __\ \  \\\  \ \  \\\  \ \  \ \\ \       \ \  \    \ \  \\\  \ \  \    \ \   ___  \  
    \ \  \|\  \ \  \\\  \ \  \\\  \ \  \_\\ \       \ \  \____\ \  \\\  \ \  \____\ \  \\ \  \ 
     \ \_______\ \_______\ \_______\ \_______\       \ \_______\ \_______\ \_______\ \__\\ \__\
      \|_______|\|_______|\|_______|\|_______|        \|_______|\|_______|\|_______|\|__| \|__|
                                                                                                                                                                                                                                                                        
     * 
     */

    // Guide: https://class.coursera.org/mobilecloud-001/forum/thread?thread_id=924

    @Autowired
    private VideoRepository _videoRepository;

    @RequestMapping(value = VideoSvcApi.VIDEO_SVC_PATH, method = RequestMethod.GET)
    public @ResponseBody Collection<Video> getVideoList() {
        return (Collection<Video>) _videoRepository.findAll();
    }

    @RequestMapping(value = VideoSvcApi.VIDEO_SVC_PATH, method = RequestMethod.POST)
    public @ResponseBody Video addVideo(@RequestBody Video v) {
        v.setLikes(0);
        return _videoRepository.save(v);
    }

    @RequestMapping(value = VideoSvcApi.VIDEO_SVC_PATH + "/{id}", method = RequestMethod.GET)
    public @ResponseBody Video getVideoById(@PathVariable long id, HttpServletResponse response) {
        Video v = _videoRepository.findOne(id);
        if (v == null)
            response.setStatus(HttpStatus.SC_NOT_FOUND);
        return v;
    }

    @RequestMapping(value = VideoSvcApi.VIDEO_SVC_PATH + "/{id}/like", method = RequestMethod.POST)
    public void likeVideo(@PathVariable long id, Principal principal, HttpServletResponse response) {
        Video v = _videoRepository.findOne(id);
        if (v == null) {
            response.setStatus(HttpStatus.SC_NOT_FOUND);
            return;
        }
        String username = principal.getName();
        if (!v.like(username))
            response.setStatus(HttpStatus.SC_BAD_REQUEST);
        _videoRepository.save(v);
    }

    @RequestMapping(value = VideoSvcApi.VIDEO_SVC_PATH + "/{id}/unlike", method = RequestMethod.POST)
    public void unlikeVideo(@PathVariable long id, Principal principal, HttpServletResponse response) {
        Video v = _videoRepository.findOne(id);
        if (v == null) {
            response.setStatus(HttpStatus.SC_NOT_FOUND);
            return;
        }
        String username = principal.getName();
        v.unlike(username);
        _videoRepository.save(v);
    }

    @RequestMapping(value = VideoSvcApi.VIDEO_SVC_PATH + "/{id}/likedby", method = RequestMethod.GET)
    public @ResponseBody Collection<String> getUsersWhoLikedVideo(@PathVariable long id,
            HttpServletResponse response) {
        Video v = _videoRepository.findOne(id);
        if (v == null) {
            response.setStatus(HttpStatus.SC_NOT_FOUND);
            return new ArrayList<String>();
        }
        return v.getUsersWhoLiked();
    }

    @RequestMapping(value = VideoSvcApi.VIDEO_TITLE_SEARCH_PATH, method = RequestMethod.GET)
    public @ResponseBody Collection<Video> findByTitle(@RequestParam String title) {
        return _videoRepository.findByName(title);
    }

    @RequestMapping(value = VideoSvcApi.VIDEO_DURATION_SEARCH_PATH, method = RequestMethod.GET)
    public @ResponseBody Collection<Video> findByDurationLessThan(@RequestParam long duration) {
        return _videoRepository.findByDurationLessThan(duration);
    }
}