package com.commafeed.backend.service;
import javax.inject.Inject;
import javax.inject.Singleton;
import lombok.RequiredArgsConstructor;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.lang3.StringUtils;
import com.commafeed.backend.dao.FeedEntryContentDAO;
import com.commafeed.backend.feed.FeedUtils;
import com.commafeed.backend.model.FeedEntryContent;
@RequiredArgsConstructor(onConstructor = @__({ @Inject }))
@Singleton
public class FeedEntryContentService {
private final FeedEntryContentDAO feedEntryContentDAO;
/**
* this is NOT thread-safe
*/
public FeedEntryContent findOrCreate(FeedEntryContent content, String baseUrl) {
String contentHash = DigestUtils.sha1Hex(StringUtils.trimToEmpty(content.getContent()));
String titleHash = DigestUtils.sha1Hex(StringUtils.trimToEmpty(content.getTitle()));
Long existingId = feedEntryContentDAO.findExisting(contentHash, titleHash);
FeedEntryContent result = null;
if (existingId == null) {
content.setContentHash(contentHash);
content.setTitleHash(titleHash);
content.setAuthor(FeedUtils.truncate(FeedUtils.handleContent(content.getAuthor(), baseUrl, true), 128));
content.setTitle(FeedUtils.truncate(FeedUtils.handleContent(content.getTitle(), baseUrl, true), 2048));
content.setContent(FeedUtils.handleContent(content.getContent(), baseUrl, false));
result = content;
feedEntryContentDAO.saveOrUpdate(result);
} else {
result = new FeedEntryContent();
result.setId(existingId);
}
return result;
}
}