package eu.siacs.conversations.utils;

import android.net.Uri;

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;

import eu.siacs.conversations.utils.CryptoHelper;
import eu.siacs.conversations.xmpp.jid.InvalidJidException;
import eu.siacs.conversations.xmpp.jid.Jid;

public class XmppUri {

	private String jid;
	private boolean muc;
	private String fingerprint;

	public XmppUri(String uri) {
		try {
			parse(Uri.parse(uri));
		} catch (IllegalArgumentException e) {
			jid = null;
		}
	}

	public XmppUri(Uri uri) {
		parse(uri);
	}

	protected void parse(Uri uri) {
		String scheme = uri.getScheme();
		if ("xmpp".equals(scheme)) {
			// sample: xmpp:jid@foo.com
			muc = "join".equalsIgnoreCase(uri.getQuery());
			if (uri.getAuthority() != null) {
				jid = uri.getAuthority();
			} else {
				jid = uri.getSchemeSpecificPart().split("\\?")[0];
			}
			fingerprint = parseFingerprint(uri.getQuery());
		} else if ("imto".equals(scheme)) {
			// sample: imto://xmpp/jid@foo.com
			try {
				jid = URLDecoder.decode(uri.getEncodedPath(), "UTF-8").split("/")[1];
			} catch (final UnsupportedEncodingException ignored) {
			}
		}
	}

	protected  String parseFingerprint(String query) {
		if (query == null) {
			return null;
		} else {
			final String NEEDLE = "otr-fingerprint=";
			int index = query.indexOf(NEEDLE);
			if (index >= 0 && query.length() >= (NEEDLE.length() + index + 40)) {
				return CryptoHelper.prettifyFingerprint(query.substring(index + NEEDLE.length(), index + NEEDLE.length() + 40));
			} else {
				return null;
			}
		}
	}

	public Jid getJid() {
		try {
			return Jid.fromString(this.jid);
		} catch (InvalidJidException e) {
			return null;
		}
	}

	public String getFingerprint() {
		return this.fingerprint;
	}

	public boolean isMuc() {
		return this.muc;
	}
}