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package de.thedevstack.conversationsplus.xmpp.avatar;
import de.thedevstack.conversationsplus.xmpp.pubsub.PubSubPacketGenerator;
import de.thedevstack.conversationsplus.xml.Element;
import de.thedevstack.conversationsplus.xmpp.jid.Jid;
import de.thedevstack.conversationsplus.dto.Avatar;
import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
/**
* Generates the IQ Packets for handling Avatars
* as defined in XEP-0084.
* @see {@link http://xmpp.org/extensions/xep-0084.html}
*/
public final class AvatarPacketGenerator {
public static final String NAMESPACE_AVATAR_DATA = "urn:xmpp:avatar:data";
public static final String NAMESPACE_AVATAR_METADATA = "urn:xmpp:avatar:metadata";
/**
* Generates an IqPacket for publishing avatar data.
* The attributes from and id are not set in here - this is added while sending the packet.
* <pre>
* <iq type='set'>
* <pubsub xmlns='http://jabber.org/protocol/pubsub'>
* <publish node='urn:xmpp:avatar:data'>
* <item id='111f4b3c50d7b0df729d299bc6f8e9ef9066971f'>
* <data xmlns='urn:xmpp:avatar:data'>
* qANQR1DBwU4DX7jmYZnncm...
* </data>
* </item>
* </publish>
* </pubsub>
* </iq>
* </pre>
* @param avatar the avatar to publish
* @return the IqPacket
*/
public static IqPacket generatePublishAvatarPacket(Avatar avatar) {
final Element item = new Element("item");
item.setAttribute("id", avatar.sha1sum);
final Element data = item.addChild("data", NAMESPACE_AVATAR_DATA);
data.setContent(avatar.image);
return PubSubPacketGenerator.generatePubSubPublishPacket(NAMESPACE_AVATAR_DATA, item);
}
/**
* Generates an IqPacket to retrieve avatar data.
* The attributes from and id are not set in here - this is added while sending the packet.
* <pre>
* <iq type='get'>
* <pubsub xmlns='http://jabber.org/protocol/pubsub'>
* <items node='urn:xmpp:avatar:data'>
* <item id='111f4b3c50d7b0df729d299bc6f8e9ef9066971f'/>
* </items>
* </pubsub>
* </iq>
* </pre>
* @param avatar the avatar to retrieve
* @return the IqPacket
*/
public static IqPacket generateRetrieveAvatarPacket(Avatar avatar) {
final Element item = new Element("item");
item.setAttribute("id", avatar.sha1sum);
final IqPacket packet = PubSubPacketGenerator.generatePubSubRetrievePacket(NAMESPACE_AVATAR_DATA, item);
packet.setTo(avatar.owner);
return packet;
}
/**
* Generates an IqPacket to publish metadata for an avatar.
* The attributes from and id are not set in here - this is added while sending the packet.
* <pre>
* <iq type='set'>
* <pubsub xmlns='http://jabber.org/protocol/pubsub'>
* <publish node='urn:xmpp:avatar:metadata'>
* <item id='111f4b3c50d7b0df729d299bc6f8e9ef9066971f'>
* <metadata xmlns='urn:xmpp:avatar:metadata'>
* <info bytes='12345'
* id='111f4b3c50d7b0df729d299bc6f8e9ef9066971f'
* height='64'
* type='image/png'
* width='64'/>
* </metadata>
* </item>
* </publish>
* </pubsub>
* </iq>
* </pre>
* @param avatar the avatar to publish the metadata
* @return the IqPacket
*/
public static IqPacket generatePublishAvatarMetadataPacket(Avatar avatar) {
final Element item = new Element("item");
item.setAttribute("id", avatar.sha1sum);
final Element metadata = item.addChild("metadata", NAMESPACE_AVATAR_METADATA);
final Element info = metadata.addChild("info");
info.setAttribute("bytes", avatar.size);
info.setAttribute("id", avatar.sha1sum);
info.setAttribute("height", avatar.height);
info.setAttribute("width", avatar.height);
info.setAttribute("type", avatar.type);
return PubSubPacketGenerator.generatePubSubPublishPacket(NAMESPACE_AVATAR_METADATA, item);
}
/**
* Generates an IqPacket to retrieve metadata of an avatar.
* The attributes from and id are not set in here - this is added while sending the packet.
* @param to the Jid to deliver the metadata to
* @return the IqPacket
*/
public static IqPacket generateRetrieveAvatarMetadataPacket(Jid to) {
final IqPacket packet = PubSubPacketGenerator.generatePubSubRetrievePacket(NAMESPACE_AVATAR_METADATA, null);
if (to != null) {
packet.setTo(to);
}
return packet;
}
/**
* Helper class - private constructor to avoid instantiation
*/
private AvatarPacketGenerator() {
// avoid instantiation
}
}
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