package org.mercury_im.messenger.core.store.message;

import org.jivesoftware.smack.chat2.IncomingChatMessageListener;
import org.jivesoftware.smack.chat2.OutgoingChatMessageListener;
import org.jivesoftware.smack.packet.MessageBuilder;
import org.jivesoftware.smackx.delay.packet.DelayInformation;
import org.jxmpp.jid.EntityBareJid;
import org.mercury_im.messenger.core.SchedulersFacade;
import org.mercury_im.messenger.core.data.repository.DirectChatRepository;
import org.mercury_im.messenger.core.data.repository.MessageRepository;
import org.mercury_im.messenger.core.data.repository.PeerRepository;
import org.mercury_im.messenger.entity.Account;
import org.mercury_im.messenger.entity.message.Message;
import org.mercury_im.messenger.entity.message.MessageDirection;

import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.inject.Inject;
import javax.inject.Singleton;

import io.reactivex.disposables.CompositeDisposable;
import io.reactivex.disposables.Disposable;

@Singleton
public class MercuryMessageStore implements IncomingChatMessageListener, OutgoingChatMessageListener {

    private static final Logger LOGGER = Logger.getLogger(MercuryMessageStore.class.getName());

    private final MessageRepository messageRepository;
    private final DirectChatRepository directChatRepository;
    private final PeerRepository peerRepository;
    private final SchedulersFacade schedulers;

    private Account account;

    private CompositeDisposable disposable = new CompositeDisposable();

    @Inject
    public MercuryMessageStore(Account account,
                               PeerRepository peerRepository,
                               DirectChatRepository directChatRepository,
                               MessageRepository messageRepository,
                               SchedulersFacade schedulers) {
        this.account = account;
        this.peerRepository = peerRepository;
        this.directChatRepository = directChatRepository;
        this.messageRepository = messageRepository;
        this.schedulers = schedulers;
    }

    @Override
    public void newIncomingMessage(EntityBareJid from,
                                   org.jivesoftware.smack.packet.Message smackMessage,
                                   org.jivesoftware.smack.chat2.Chat smackChat) {
        Message message = new Message();
        message.setDirection(MessageDirection.incoming);
        DelayInformation delayInformation = DelayInformation.from(smackMessage);
        message.setTimestamp(delayInformation != null ? delayInformation.getStamp() : new Date());
        message.setSender(from.asEntityBareJidString());
        message.setRecipient(smackMessage.getTo().asBareJid().toString());
        if (smackMessage.getBody() != null) {
            message.setBody(smackMessage.getBody());
        }
        disposable.add(writeMessageToStore(from.asEntityBareJidString(), message));
    }

    @Override
    public void newOutgoingMessage(EntityBareJid to,
                                   MessageBuilder smackMessage,
                                   org.jivesoftware.smack.chat2.Chat smackChat) {
        Message message = new Message();
        message.setDirection(MessageDirection.outgoing);
        message.setTimestamp(new Date());
        message.setSender(account.getAddress());
        message.setRecipient(to.asBareJid().toString());
        if (smackMessage.getBody() != null) {
            message.setBody(smackMessage.getBody().getMessage());
        }
        disposable.add(writeMessageToStore(to.asEntityBareJidString(), message));
    }

    private Disposable writeMessageToStore(String peer, Message message) {
        return peerRepository.getOrCreatePeer(account, peer)
                .flatMap(directChatRepository::getOrCreateChatWithPeer)
                .flatMap(chat -> messageRepository.insertMessage(chat, message))
                .subscribeOn(schedulers.getIoScheduler())
                .subscribe(m -> LOGGER.log(Level.INFO, "Message written"), e -> LOGGER.log(Level.SEVERE, "Error: ", e));
    }
}