mirror of
https://github.com/Athou/commafeed.git
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93 lines
2.5 KiB
Java
93 lines
2.5 KiB
Java
package com.commafeed.backend.services;
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import java.util.List;
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import javax.ejb.Stateless;
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import javax.ejb.ApplicationException;
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import javax.inject.Inject;
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import com.commafeed.backend.dao.FeedEntryDAO;
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import com.commafeed.backend.dao.FeedEntryStatusDAO;
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import com.commafeed.backend.dao.FeedSubscriptionDAO;
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import com.commafeed.backend.feeds.FeedRefreshTaskGiver;
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import com.commafeed.backend.model.Feed;
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import com.commafeed.backend.model.FeedCategory;
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import com.commafeed.backend.model.FeedEntry;
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import com.commafeed.backend.model.FeedEntryStatus;
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import com.commafeed.backend.model.FeedSubscription;
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import com.commafeed.backend.model.User;
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import com.google.api.client.util.Lists;
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@Stateless
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public class FeedSubscriptionService {
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@SuppressWarnings("serial")
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@ApplicationException
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public static class FeedSubscriptionException extends RuntimeException {
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public FeedSubscriptionException(String msg) {
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super(msg);
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}
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}
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@Inject
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FeedService feedService;
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@Inject
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FeedEntryDAO feedEntryDAO;
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@Inject
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FeedEntryStatusDAO feedEntryStatusDAO;
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@Inject
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FeedSubscriptionDAO feedSubscriptionDAO;
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@Inject
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ApplicationSettingsService applicationSettingsService;
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@Inject
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FeedRefreshTaskGiver taskGiver;
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public Feed subscribe(User user, String url, String title,
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FeedCategory category) {
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final String pubUrl = applicationSettingsService.get().getPublicUrl();
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if (pubUrl == null) {
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throw new FeedSubscriptionException(
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"Public URL of this CommaFeed is unset");
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}
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if (url.startsWith(pubUrl)) {
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throw new FeedSubscriptionException(
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"Could not subscribe to a feed from this CommaFeed instance");
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}
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Feed feed = feedService.findOrCreate(url);
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FeedSubscription sub = feedSubscriptionDAO.findByFeed(user, feed);
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boolean newSubscription = false;
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if (sub == null) {
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sub = new FeedSubscription();
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sub.setFeed(feed);
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sub.setUser(user);
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newSubscription = true;
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}
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sub.setCategory(category);
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sub.setTitle(title.substring(0, Math.min(128, title.length())));
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feedSubscriptionDAO.saveOrUpdate(sub);
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if (newSubscription) {
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List<FeedEntryStatus> statuses = Lists.newArrayList();
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List<FeedEntry> allEntries = feedEntryDAO.findByFeed(feed, 0, 10);
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for (FeedEntry entry : allEntries) {
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FeedEntryStatus status = new FeedEntryStatus();
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status.setEntry(entry);
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status.setRead(false);
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status.setSubscription(sub);
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statuses.add(status);
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}
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feedEntryStatusDAO.save(statuses);
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}
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taskGiver.add(feed);
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return feed;
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}
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}
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