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package de.thedevstack.conversationsplus.xmpp.avatar;
import de.thedevstack.conversationsplus.dto.Avatar;
import de.thedevstack.conversationsplus.xmpp.pubsub.PubSubPacketParser;
import de.thedevstack.conversationsplus.xml.Element;
import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
/**
* Parses the IQ Packets for handling Avatars
* as defined in XEP-0084.
* @see <a href="http://xmpp.org/extensions/xep-0084.html">http://xmpp.org/extensions/xep-0084.html</a>
*/
public class AvatarPacketParser {
/**
* Extracts the base64 encoded avatar data from an IqPacket.
* @param packet the IqPacket to be parsed.
* @return base64 encoded avatar data
*/
public static String parseAvatarData(IqPacket packet) {
Element items = PubSubPacketParser.findItems(packet);
String base64Avatar = null;
if (null != items) {
Element item = items.findChild("item");
if (null != item) {
base64Avatar = item.findChildContent("data", AvatarPacket.NAMESPACE_AVATAR_DATA);
}
}
return base64Avatar;
}
public static Avatar parseMetadata(Element items) {
if (null != items) {
Element item = items.findChild("item");
if (item == null) {
return null;
}
Element metadata = item.findChild("metadata");
if (metadata == null) {
return null;
}
String primaryId = item.getAttribute("id");
if (primaryId == null) {
return null;
}
for (Element child : metadata.getChildren()) {
if (child.getName().equals("info")
&& primaryId.equals(child.getAttribute("id"))) {
Avatar avatar = new Avatar();
String height = child.getAttribute("height");
String width = child.getAttribute("width");
String size = child.getAttribute("bytes");
try {
if (height != null) {
avatar.height = Integer.parseInt(height);
}
if (width != null) {
avatar.width = Integer.parseInt(width);
}
if (size != null) {
avatar.size = Long.parseLong(size);
}
} catch (NumberFormatException e) {
return null;
}
avatar.type = child.getAttribute("type");
String hash = child.getAttribute("id");
if (!Avatar.isValidSHA1(hash)) {
return null;
}
avatar.sha1sum = hash;
avatar.origin = Avatar.Origin.PEP;
return avatar;
}
}
}
return null;
}
public static Avatar parseMetadata(IqPacket packet) {
return parseMetadata(PubSubPacketParser.findItems(packet));
}
}
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