Entry.java

/*
 * Copyright (C) 2012 Alex Kuiper
 * 
 * This file is part of PageTurner
 *
 * PageTurner is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PageTurner is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with PageTurner.  If not, see <http://www.gnu.org/licenses/>.*
 */
package net.nightwhistler.nucular.atom;

import jedi.option.Option;

import java.util.ArrayList;
import java.util.List;

import static jedi.functional.FunctionalPrimitives.firstOption;
import static jedi.functional.FunctionalPrimitives.isEmpty;
import static jedi.option.Options.none;
import static jedi.option.Options.option;
import static jedi.option.Options.some;
import static net.nightwhistler.nucular.atom.AtomConstants.*;

public class Entry extends AtomElement {

	private String updated;
	private String summary;

    private Feed feed;

    private String baseURL;

	public String getUpdated() {
		return updated;
	}

    public String getBaseURL() {
        return baseURL;
    }

    public void setBaseURL( String baseURL ) {
        this.baseURL = baseURL;
    }

	public void setUpdated(String updated) {
		this.updated = updated;
	}

    public void setFeed(Feed feed) {
        this.feed = feed;
    }

    public Option<Feed> getFeed() {
        return option(feed);
    }

    public Option<Link> getWebsiteLink() {
        return findByRel(AtomConstants.REL_WEBSITE);
    }

	public Option<Link> getAlternateLink() {
		Option<Link> atomLink = getAtomLink();

        return atomLink.filter(l -> l.getRel() != null && l.getRel().equalsIgnoreCase(REL_ALTERNATE));
	}
	
	public Option<Link> getAtomLink() {
		List<Link> links = getLinks();

        return firstOption( links, l -> l.getType().startsWith(TYPE_ATOM));
	}
	
	public String getSummary() {
		return summary;
	}
	
	public void setSummary(String summary) {
		this.summary = summary;
	}
	
	private Option<Link> findByRel(String... items) {
		Option<Link> link = none();

		for ( int i=0; i < items.length && isEmpty(link); i++ ) {
			link = findByRel( items[i] );
		}
		
		return link;
	}

    public List<Link> getAlternateLinks() {

        List<Link> result = new ArrayList<Link>();

        for ( Link link: getLinks() ) {

            String rel = link.getRel() != null ? link.getRel() : "";
            String type = link.getType() != null ? link.getType() : "";

            if ( rel.equals(REL_RELATED) && type.startsWith(TYPE_ATOM ) ) {
                result.add(link);
            }
        }

        return result;

    }

	public Option<Link> getThumbnailLink() {
		return findByRel(REL_THUMBNAIL, REL_THUMBNAIL_ALT, REL_STANZA_THUMBNAIL_IMAGE);
	}
	
	public Option<Link> getImageLink() {
		return findByRel(REL_IMAGE, REL_COVER, REL_STANZA_COVER_IMAGE );		
	}
	
	public Option<Link> getBuyLink() {
		return findByRel(REL_BUY, REL_STANZA_BUY);
	}
	
	public Option<Link> getEpubLink() {
        return firstOption( getLinks(), link -> link.getType() != null && link.getType().equals(TYPE_EPUB));
	}
}