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

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Here is the source code for org.magnum.mobilecloud.video.VideoService.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.io.IOException;
import java.security.Principal;
import java.util.Collection;

import javax.servlet.http.HttpServletResponse;

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.http.HttpStatus;
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;
import org.springframework.web.bind.annotation.ResponseStatus;

@Controller
public class VideoService {

    /**
     * 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"
     * 
     * 
        ________  ________  ________  ________          ___       ___  ___  ________  ___  __       
       |\   ____\|\   __  \|\   __  \|\   ___ \        |\  \     |\  \|\  \|\   ____\|\  \|\  \     
       \ \  \___|\ \  \|\  \ \  \|\  \ \  \_|\ \       \ \  \    \ \  \\\  \ \  \___|\ \  \/  /|_   
        \ \  \  __\ \  \\\  \ \  \\\  \ \  \ \\ \       \ \  \    \ \  \\\  \ \  \    \ \   ___  \  
    \ \  \|\  \ \  \\\  \ \  \\\  \ \  \_\\ \       \ \  \____\ \  \\\  \ \  \____\ \  \\ \  \ 
     \ \_______\ \_______\ \_______\ \_______\       \ \_______\ \_______\ \_______\ \__\\ \__\
      \|_______|\|_______|\|_______|\|_______|        \|_______|\|_______|\|_______|\|__| \|__|
                                                                                                                                                                                                                                                                        
     * 
     */

    @Autowired
    private VideoRepository videos;

    @RequestMapping(value = "/go", method = RequestMethod.GET)
    public @ResponseBody String goodLuck() {
        return "Good Luck!";
    }

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

    @RequestMapping(value = VideoSvcApi.VIDEO_SVC_PATH + "/{id}", method = RequestMethod.GET)
    public @ResponseBody Video getVideoById(@PathVariable("id") long id, HttpServletResponse response) {
        Video v = videos.findOne(id);
        if (v == null) {
            sendError(response, HttpServletResponse.SC_NOT_FOUND, "Video not found");
        }
        return v;
    }

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

    @RequestMapping(value = VideoSvcApi.VIDEO_SVC_PATH + "/{id}/like", method = RequestMethod.POST)
    @ResponseStatus(value = HttpStatus.OK)
    public void likeVideo(@PathVariable("id") long id, HttpServletResponse response, Principal p) {
        Video v = videos.findOne(id);
        if (v == null) {
            sendError(response, HttpServletResponse.SC_NOT_FOUND, "Video not found");
            return;
        }
        if (!v.likeVideo(p.getName())) {
            sendError(response, HttpServletResponse.SC_BAD_REQUEST, "Video already liked by user");
            return;
        }
        videos.save(v);
    }

    @RequestMapping(value = VideoSvcApi.VIDEO_SVC_PATH + "/{id}/unlike", method = RequestMethod.POST)
    @ResponseStatus(value = HttpStatus.OK)
    public void unlikeVideo(@PathVariable("id") long id, HttpServletResponse response, Principal p) {
        Video v = videos.findOne(id);
        if (v == null) {
            sendError(response, HttpServletResponse.SC_NOT_FOUND, "Video not found");
            return;
        }
        v.unlikeVideo(p.getName());
        videos.save(v);
    }

    @RequestMapping(value = VideoSvcApi.VIDEO_TITLE_SEARCH_PATH, method = RequestMethod.GET)
    public @ResponseBody Collection<Video> findByTitle(@RequestParam(VideoSvcApi.TITLE_PARAMETER) String title,
            HttpServletResponse response) {
        Collection<Video> v = videos.findByName(title);
        if (v == null) {
            sendError(response, HttpServletResponse.SC_NOT_FOUND, "Video not found");
        }
        return v;
    }

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

    @RequestMapping(value = VideoSvcApi.VIDEO_SVC_PATH + "/{id}/likedby", method = RequestMethod.GET)
    public @ResponseBody Collection<String> getUsersWhoLikedVideo(@PathVariable("id") long id,
            HttpServletResponse response) {
        Video v = videos.findOne(id);
        if (v == null) {
            sendError(response, HttpServletResponse.SC_NOT_FOUND, "Video not found");
        }
        return v.getUsersWhoLiked();
    }

    private String sendError(HttpServletResponse response, int sc, String msg) {
        try {
            response.sendError(sc, msg);
        } catch (Exception e) {
            // ignore
        }
        return msg;
    }
}