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package syncloud.google.docs.model;

import com.google.api.client.http.HttpRequest;
import com.google.api.client.http.HttpRequestFactory;
import com.google.api.client.http.HttpResponse;
import com.google.api.client.http.xml.atom.AtomContent;
import com.google.api.client.util.Key;
import syncloud.core.log.Logger;
import syncloud.google.docs.DocumentIterator;
import syncloud.google.docs.RequestExecutor;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Feed {

    private static Logger logger = Logger.getLogger(Feed.class);
    private static RequestExecutor requestExecutor = new RequestExecutor();

    @Key("openSearch:totalResults")
    public int totalResults;

    @Key("link")
    public List links;

    @Key("entry")
    public List docs = new ArrayList();

    public Link getLink(LinkRel linkRel) {
        return Link.find(links, linkRel);
    }

    public static Feed first100Entries(HttpRequestFactory requestFactory, DocsUrl url) throws IOException {
        HttpRequest request = requestFactory.buildGetRequest(url);
        HttpResponse response = requestExecutor.executeNonSensitive(request);
        return response.parseAs(Feed.class);
    }

    public static Iterable allEntries(final HttpRequestFactory requestFactory, final DocsUrl url) throws IOException {

        return new Iterable() {
            @Override
            public Iterator iterator() {
                return new DocumentIterator(requestFactory, url);
            }
        };

    }

    public static Entry executeGet(HttpRequestFactory requestFactory, DocsUrl url, Class feedClass) throws IOException {

        HttpRequest request = requestFactory.buildGetRequest(url);
        HttpResponse response = requestExecutor.executeNonSensitive(request);
        return response.parseAs(feedClass);

    }

    public static InputStream executeGetContent(HttpRequestFactory requestFactory, DocsUrl url) throws IOException {

        HttpRequest request = requestFactory.buildGetRequest(url);
        HttpResponse response = requestExecutor.executeNonSensitive(request);
        return response.getContent();

    }

    public static DocumentListEntry executePost(HttpRequestFactory requestFactory, DocsUrl url, AtomContent content) throws IOException {

        HttpRequest request = requestFactory.buildPostRequest(url, content);
        HttpResponse response = requestExecutor.executeSensitive(request);
        return response.parseAs(DocumentListEntry.class);
    }

    public static void executeDelete(HttpRequestFactory requestFactory, DocsUrl url, String etag, boolean matchAll) throws IOException {
        HttpRequest request = requestFactory.buildDeleteRequest(url);
        if (matchAll)
            request.getHeaders().setIfMatch("*");
        else
            request.getHeaders().setIfMatch(etag);
        HttpResponse response = requestExecutor.executeNonSensitive(request);
        response.ignore();
    }

}