co.aurasphere.botmill.kik.util.json.IncomingMessagesDeserializer.java Source code

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Here is the source code for co.aurasphere.botmill.kik.util.json.IncomingMessagesDeserializer.java

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/*
 * 
 * MIT License
 *
 * Copyright (c) 2016 BotMill.io
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 * 
 */
package co.aurasphere.botmill.kik.util.json;

import java.lang.reflect.Type;

import co.aurasphere.botmill.kik.incoming.model.FriendPickerMessage;
import co.aurasphere.botmill.kik.incoming.model.IsTypingMessage;
import co.aurasphere.botmill.kik.incoming.model.LinkMessage;
import co.aurasphere.botmill.kik.incoming.model.PictureMessage;
import co.aurasphere.botmill.kik.incoming.model.ReadReceiptMessage;
import co.aurasphere.botmill.kik.incoming.model.ScanDataMessage;
import co.aurasphere.botmill.kik.incoming.model.StartChattingMessage;
import co.aurasphere.botmill.kik.incoming.model.StickerMessage;
import co.aurasphere.botmill.kik.incoming.model.TextMessage;
import co.aurasphere.botmill.kik.incoming.model.VideoMessage;
import co.aurasphere.botmill.kik.model.Message;
import co.aurasphere.botmill.kik.model.MessageCallback;
import co.aurasphere.botmill.kik.model.MessageType;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;

/**
 * The Class IncomingMessagesDeserializer.
 * 
 * @author Alvin P. Reyes
 */
public class IncomingMessagesDeserializer implements JsonDeserializer<MessageCallback> {

    /**
     * Gson delegate used to avoid infinite loops during the deserialization.
     */
    private static Gson delegateGson;

    /**
     * Instantiates a new AttachmentDeserializer.
     */
    public IncomingMessagesDeserializer() {
        GsonBuilder builder = new GsonBuilder();
        builder.addDeserializationExclusionStrategy(new SkipDeserializationAnnotationExclusionStrategy());
        delegateGson = builder.create();
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * com.google.gson.JsonDeserializer#deserialize(com.google.gson.JsonElement,
     * java.lang.reflect.Type, com.google.gson.JsonDeserializationContext)
     */
    @SuppressWarnings("incomplete-switch")
    public MessageCallback deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
            throws JsonParseException {

        MessageCallback messageCallback = new MessageCallback();
        //   The message callback can have multiple message bodies.
        JsonElement jsonMessages = json.getAsJsonObject().get("messages");

        for (int i = 0; i < jsonMessages.getAsJsonArray().size(); i++) {
            //   get type.
            JsonObject jsonMessage = jsonMessages.getAsJsonArray().get(i).getAsJsonObject();
            String typeString = jsonMessage.get("type").getAsString();
            MessageType messageType = MessageType.valueOf(typeString.replace('-', '_').toUpperCase());
            Class<? extends Message> messageClass = null;
            switch (messageType) {
            case TEXT:
                messageClass = TextMessage.class;
                break;
            case PICTURE:
                messageClass = PictureMessage.class;
                break;
            case VIDEO:
                messageClass = VideoMessage.class;
                break;
            case LINK:
                messageClass = LinkMessage.class;
                break;
            case SCAN_DATA:
                messageClass = ScanDataMessage.class;
                break;
            case STICKER:
                messageClass = StickerMessage.class;
                break;
            case FRIEND_PICKER:
                messageClass = FriendPickerMessage.class;
                break;
            case IS_TYPING:
                messageClass = IsTypingMessage.class;
                break;
            case READ_RECEIPT:
                messageClass = ReadReceiptMessage.class;
                break;
            case START_CHATTING:
                messageClass = StartChattingMessage.class;
                break;
            }

            Message message = context.deserialize(jsonMessage, messageClass);
            messageCallback.addMessage(message);
        }

        return messageCallback;
    }

    /*
     * (non-Javadoc)
     * 
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        return "IncomingMessagesDeserializer []";
    }

}