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package fxpodcastviewer.feed;
import java.io.InputStream;
import javafx.io.http.HttpRequest;
import javafx.data.pull.*;

/**
 * @author Raghu Nair
 *
 */

public class FeedValidator extends HttpRequest {

    //podcastParser uses to parse the location if it is a valid feed.
    public-init var podcastParser:PodcastParser;

    //Error if any while connecting.
    public var connectError:Boolean = false;

    //Will be set to 1 if Atom feed, 2 Rss Feed -1 if not a feed.
    public var type = -1;

    //If the xml starts with <feed> or <rss> it is a valid feed.
    override var onInput = function(input:InputStream){
        var parser = PullParser {input:input;}
        parser.forward(2);
        var e = parser.event;
        if ( e.qname.name == "rss" ) {
            type = PodcastParser.RSS;
        }else if (e.qname.name == "feed" ){
            type = PodcastParser.ATOM;
        }        
        input.close();
        podcastParser.type = type;
    }

    override var onException = function(exception: java.lang.Exception) {
            exception.printStackTrace();
            println("Error - {exception}");
            connectError = true;
    }

    override var onResponseCode = function(responseCode:Integer) {
        if (responseCode != 200) {
            println("failed, response: {responseCode} {responseMessage}");
            connectError = true;
        }
    }


}