package de.thedevstack.conversationsplus.utils;

import android.net.Uri;

import de.thedevstack.conversationsplus.ConversationsPlusApplication;
import de.thedevstack.conversationsplus.crypto.PgpEngine;
import de.thedevstack.conversationsplus.entities.Conversation;
import de.thedevstack.conversationsplus.entities.FileParams;
import de.thedevstack.conversationsplus.entities.Message;
import de.thedevstack.conversationsplus.enums.FileStatus;
import de.thedevstack.conversationsplus.enums.MessageStatus;
import de.thedevstack.conversationsplus.exceptions.FileCopyException;
import de.thedevstack.conversationsplus.persistance.FileBackend;
import de.thedevstack.conversationsplus.ui.UiCallback;

/**
 * Utility class to work with conversations.
 */
public class ConversationUtil {

    public static void markMessagesAsDisplayedUpToMessage(Message message) {
        Conversation conversation = message.getConversation();

        while (null != message && (MessageStatus.RECEIVED == message.getMessageStatus() || MessageStatus.TRANSMITTED == message.getMessageStatus())) {
            MessageUtil.setAndSaveMessageStatus(message, MessageStatus.DISPLAYED);

            message = conversation.getMessageBefore(message);
        }
    }

    public static void attachLocationToConversation(final Conversation conversation,
                                             final Uri uri,
                                             final UiCallback<Message> callback) {
        Message message = MessageUtil.createOutgoingMessage(conversation, uri.toString());

        if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
            PgpEngine.getInstance().encrypt(message, callback);
        } else {
            callback.success(message);
        }
    }

    public static void attachFileToConversation(final Conversation conversation,
                                         final Uri uri,
                                         final UiCallback<Message> callback) {
        final Message message = MessageUtil.createOutgoingMessage(conversation, "");

        if (null == message.getFileParams()) {
            message.setFileParams(new FileParams());
        }
        MessageUtil.setFileStatus(message, FileStatus.NEEDS_UPLOAD);
        String path = FileUtils.getPath(uri);
        if (path != null) {
            message.getFileParams().setPath(path);
            message.setRelativeFilePath(path); // TODO: Remove when everything is moved to fileparams
            MessageUtil.updateFileParams(message);
            if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
                PgpEngine.getInstance().encrypt(message, callback);
            } else {
                callback.success(message);
            }
        } else {
            ConversationsPlusApplication.executeFileAdding(new Runnable() {
                @Override
                public void run() {
                    try {
                        FileBackend.copyFileToPrivateStorage(message, uri);
                        MessageUtil.updateFileParams(message);
                        if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
                            PgpEngine.getInstance().encrypt(message, callback);
                        } else {
                            callback.success(message);
                        }
                    } catch (FileCopyException e) {
                        callback.error(e.getResId(), message);
                    }
                }
            });
        }
    }
}