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package de.thedevstack.conversationsplus.crypto.axolotl;

import android.support.annotation.NonNull;
import android.support.annotation.Nullable;

import org.whispersystems.libaxolotl.AxolotlAddress;
import org.whispersystems.libaxolotl.IdentityKey;
import org.whispersystems.libaxolotl.state.PreKeyRecord;
import org.whispersystems.libaxolotl.state.SignedPreKeyRecord;

import java.security.cert.X509Certificate;
import java.util.List;
import java.util.Set;

import de.thedevstack.conversationsplus.entities.Account;
import de.thedevstack.conversationsplus.entities.Contact;
import de.thedevstack.conversationsplus.entities.Conversation;
import de.thedevstack.conversationsplus.entities.Message;
import de.thedevstack.conversationsplus.xmpp.OnAdvancedStreamFeaturesLoaded;
import de.thedevstack.conversationsplus.xmpp.jid.Jid;

/**
 * Created by tzur on 02.03.2016.
 */
public interface AxolotlService extends OnAdvancedStreamFeaturesLoaded {

	String LOGPREFIX = "AxolotlService";

	String PEP_PREFIX = "eu.siacs.conversations.axolotl";
	String PEP_DEVICE_LIST = PEP_PREFIX + ".devicelist";
	String PEP_BUNDLES = PEP_PREFIX + ".bundles";
	String PEP_VERIFICATION = PEP_PREFIX + ".verification";

    int NUM_KEYS_TO_PUBLISH = 100;

	enum FetchStatus {
		PENDING,
		SUCCESS,
		SUCCESS_VERIFIED,
		TIMEOUT,
		ERROR
	}

	String getOwnFingerprint();

	Set<IdentityKey> getKeysWithTrust(XmppAxolotlSession.Trust trust);


	Set<String> getFingerprintsForOwnSessions();

	Set<String> getFingerprintsForContact(Contact contact);

	boolean isPepBroken();

	void regenerateKeys(boolean wipeOther);

	int getOwnDeviceId();

	Set<Integer> getOwnDeviceIds();

	void registerDevices(Jid jid, @NonNull Set<Integer> deviceIds);

	void wipeOtherPepDevices();

	void purgeKey(String fingerprint);

	void publishOwnDeviceIdIfNeeded();

	void publishOwnDeviceId(Set<Integer> deviceIds);

	void publishDeviceVerificationAndBundle(SignedPreKeyRecord signedPreKeyRecord,
											Set<PreKeyRecord> preKeyRecords,
											boolean announceAfter,
											boolean wipe);

	void publishBundlesIfNeeded(boolean announce, boolean wipe);

	XmppAxolotlSession.Trust getFingerprintTrust(String fingerprint);

	X509Certificate getFingerprintCertificate(String fingerprint);

	void setFingerprintTrust(String fingerprint, XmppAxolotlSession.Trust trust);

	Set<AxolotlAddress> findDevicesWithoutSession(Conversation conversation);

	boolean createSessionsIfNeeded(Conversation conversation);

	boolean trustedSessionVerified(Conversation conversation);

	@Nullable
	XmppAxolotlMessage encrypt(Message message);

	void preparePayloadMessage(Message message, boolean delay);

	XmppAxolotlMessage fetchAxolotlMessageFromCache(Message message);

	XmppAxolotlMessage.XmppAxolotlPlaintextMessage processReceivingPayloadMessage(XmppAxolotlMessage message);

	XmppAxolotlMessage.XmppAxolotlKeyTransportMessage processReceivingKeyTransportMessage(XmppAxolotlMessage message);

	boolean fetchMapHasErrors(List<Jid> jids);

	Set<IdentityKey> getKeysWithTrust(XmppAxolotlSession.Trust trust, Jid jid);

	Set<IdentityKey> getKeysWithTrust(XmppAxolotlSession.Trust trust, List<Jid> jids);

	long getNumTrustedKeys(Jid jid);

	boolean anyTargetHasNoTrustedKeys(List<Jid> jids);

	boolean isConversationAxolotlCapable(Conversation conversation);

	List<Jid> getCryptoTargets(Conversation conversation);

	boolean hasPendingKeyFetches(Account account, List<Jid> jids);

	void prepareKeyTransportMessage(Conversation conversation, OnMessageCreatedCallback onMessageCreatedCallback);

	void resetBrokenness();
}