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ArticleResource.java
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ArticleResource.java
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package com.tanza.rufus.resources;
import com.tanza.rufus.api.Article;
import com.tanza.rufus.api.Source;
import com.tanza.rufus.api.Source.ClientSource;
import com.tanza.rufus.core.User;
import com.tanza.rufus.db.ArticleDao;
import com.tanza.rufus.db.UserDao;
import com.tanza.rufus.feed.FeedConstants;
import com.tanza.rufus.feed.FeedParser;
import com.tanza.rufus.feed.FeedParser.FeedResponse;
import com.tanza.rufus.feed.FeedProcessor;
import com.tanza.rufus.feed.FeedUtils;
import com.tanza.rufus.views.ArticleView;
import io.dropwizard.auth.Auth;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.net.MalformedURLException;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.function.Supplier;
import java.util.stream.Collectors;
/**
* Resource for {@link Article} related processing.
*
* All methods with an {@link Optional<User>} method parameter denote endpoints
* supporting anonymous user sessions; data from these endpoints are generated
* from the collection of {@link FeedConstants#STARTER_FEEDS}.
*
* @author jtanza
*/
@Path("/articles")
@Produces(MediaType.APPLICATION_JSON)
public class ArticleResource {
private final UserDao userDao;
private final ArticleDao articleDao;
private final FeedProcessor processor;
private final FeedParser parser;
public ArticleResource (
UserDao userDao,
ArticleDao articleDao,
FeedProcessor processor,
FeedParser parser
) {
this.userDao = userDao;
this.articleDao = articleDao;
this.processor = processor;
this.parser = parser;
}
@Path("/frontpage")
@Produces({MediaType.TEXT_HTML, MediaType.APPLICATION_JSON})
@GET
public Response frontPage(@Auth Optional<User> user) {
return user.isPresent()
? articleView(() -> processor.buildFrontpageCollection(user.get()))
: articleView(processor::buildFrontpageCollection);
}
@Path("/all")
@Produces({MediaType.TEXT_HTML, MediaType.APPLICATION_JSON})
@GET
public Response all(@Auth Optional<User> user) {
return user.isPresent()
? articleView(() -> processor.buildArticleCollection(user.get()))
: articleView(processor::buildArticleCollection);
}
@Path("/tagged")
@Produces({MediaType.TEXT_HTML, MediaType.APPLICATION_JSON})
@GET
public Response byTag(@Auth Optional<User> user, @QueryParam("tag") String tag) {
return user.isPresent()
? articleView(() -> processor.buildTagCollection(user.get(), tag))
: articleView(() -> processor.buildTagCollection(tag));
}
@Path("/tagStubs")
@GET
public Response tagStubs(@Auth Optional<User> user) {
List<Source> sources;
if (user.isPresent()) {
User present = user.get();
if (!articleDao.hasSubscriptions(present.getId())) {
return Response.status(Response.Status.OK)
.type(MediaType.APPLICATION_JSON_TYPE)
.entity(Collections.EMPTY_LIST)
.build();
} else {
sources = articleDao.getSources(userDao.findByEmail(present.getEmail()).getId());
}
} else {
sources = articleDao.getPublicSources();
}
Set<String> tags = sources.stream()
.map(Source::getTags)
.filter(Objects::nonNull)
.flatMap(List::stream)
.collect(Collectors.toSet());
return Response.ok(tags).build();
}
@Path("/bookmark")
@Consumes(MediaType.APPLICATION_JSON)
@POST
public Response bookmark(@Auth User user, Article article) {
user = userDao.findByEmail(user.getEmail());
if (articleDao.getBookmarked(user.getId()).contains(article)) {
return ResourceUtils.badRequest("Article is already bookmarked.");
}
articleDao.bookmarkArticle(user.getId(), article);
return Response.ok().build();
}
@Path("/removeBookmark")
@Consumes(MediaType.APPLICATION_JSON)
@PUT
public Response removeBookmark(@Auth User user, Article article) {
user = userDao.findByEmail(user.getEmail());
articleDao.removeArticle(user.getId(), article.getUrl());
return Response.ok().build();
}
@Path("/bookmarked")
@Produces({MediaType.TEXT_HTML, MediaType.APPLICATION_JSON})
@GET
public Response bookmarked(@Auth User user) {
final User u = userDao.findByEmail(user.getEmail());
return articleView(() -> articleDao.getBookmarked(u.getId()));
}
@Path("/new")
@Consumes(MediaType.APPLICATION_JSON)
@POST
public Response addFeed(@Auth User user, List<String> feeds) {
if (feeds.isEmpty()) {
return ResourceUtils.badRequest("No feeds provided.");
}
return Response.ok(FeedResponse.formatMessage(parser.parse(user, feeds))).build();
}
@Path("/setFrontpage")
@Consumes(MediaType.APPLICATION_JSON)
@PUT
public Response setFrontpage(@Auth User user, String url) {
user = userDao.findByEmail(user.getEmail());
try {
Source source = new Source(new URL(url));
articleDao.setFrontpage(user.getId(), source);
processor.invalidateCache(user.getId());
return Response.ok().build();
} catch (MalformedURLException e) {
return ResourceUtils.badRequest(e.getMessage());
}
}
@Path("/removeFrontpage")
@Consumes(MediaType.APPLICATION_JSON)
@PUT
public Response removeFrontpage(@Auth User user, String url) {
user = userDao.findByEmail(user.getEmail());
try {
Source source = new Source(new URL(url));
articleDao.removeFrontpage(user.getId(), source);
processor.invalidateCache(user.getId());
return Response.ok().build();
} catch (MalformedURLException e) {
return ResourceUtils.badRequest(e.getMessage());
}
}
@Path("sources")
@GET
public Response getSources(@Auth User user) {
user = userDao.findByEmail(user.getEmail());
return Response.ok(articleDao.getSources(user.getId())).build();
}
@Path("userFeeds")
@GET
public Response userFeeds(@Auth User user) {
user = userDao.findByEmail(user.getEmail());
List<Source> sources = articleDao.getSources(user.getId());
if (FeedUtils.isNull(sources)) {
return Response.ok(Collections.emptyList()).build();
} else {
return Response.ok(sources.stream().map(ClientSource::ofExisting).collect(Collectors.toList())).build();
}
}
@Path("unsubscribe")
@PUT
public Response unsubscribe(@Auth User user, String url) {
user = userDao.findByEmail(user.getEmail());
try {
URL parseUrl = new URL(url); //ensure arg is a valid url
parseUrl.toURI();
articleDao.removeSource(url);
processor.invalidateCache(user.getId());
return Response.ok().build();
} catch (MalformedURLException | URISyntaxException e) {
return ResourceUtils.badRequest(e.getMessage());
}
}
private Response articleView(Supplier<Collection<Article>> articleSupplier) {
Collection<Article> articles = articleSupplier.get();
if (articles.isEmpty() || FeedUtils.isNull(articles)) {
return Response.ok(ArticleView.EMPTY).build();
}
return Response.ok(ArticleView.ofArticles(articles)).build();
}
}