com.github.ithildir.numbers.game.util.ConversationUtil.java Source code

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Here is the source code for com.github.ithildir.numbers.game.util.ConversationUtil.java

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/**
 * Copyright (c) 2016 Andrea Di Giorgi
 *
 * 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 com.github.ithildir.numbers.game.util;

import io.vertx.core.http.HttpHeaders;
import io.vertx.core.http.HttpServerResponse;
import io.vertx.core.json.JsonArray;
import io.vertx.core.json.JsonObject;

/**
 * @author Andrea Di Giorgi
 */
public class ConversationUtil {

    public static final String INTENT_MAIN = "assistant.intent.action.MAIN";

    public static final String INTENT_TEXT = "assistant.intent.action.TEXT";

    public static void ask(HttpServerResponse httpServerResponse, String conversationToken, String initialPrompt,
            String[] noInputPrompts) {

        httpServerResponse.putHeader(HttpHeaders.CONTENT_TYPE, "application/json; charset=utf-8");
        httpServerResponse.putHeader("Google-Assistant-API-Version", "v1");

        JsonObject responseJSON = new JsonObject();

        if (conversationToken != null) {
            responseJSON.put("conversation_token", conversationToken);
        }

        responseJSON.put("expect_user_response", true);
        responseJSON.put("expected_inputs",
                JsonUtil.getArray(_getExpectedInputJSON(initialPrompt, noInputPrompts)));

        httpServerResponse.end(responseJSON.encode());
    }

    public static void tell(HttpServerResponse httpServerResponse, String textToSpeech) {

        httpServerResponse.putHeader(HttpHeaders.CONTENT_TYPE, "application/json; charset=utf-8");
        httpServerResponse.putHeader("Google-Assistant-API-Version", "v1");

        JsonObject responseJSON = new JsonObject();

        JsonObject finalResponseJSON = new JsonObject();

        finalResponseJSON.put("speech_response", _getPromptJSON(textToSpeech));

        responseJSON.put("final_response", finalResponseJSON);

        httpServerResponse.end(responseJSON.encode());
    }

    private static JsonObject _getExpectedInputJSON(String initialPrompt, String[] noInputPrompts) {

        JsonObject expectedInputJSON = new JsonObject();

        JsonObject inputPromptJSON = new JsonObject();

        inputPromptJSON.put("initial_prompts", JsonUtil.getArray(_getPromptJSON(initialPrompt)));

        if (noInputPrompts.length > 0) {
            JsonArray noInputPromptsJSON = new JsonArray();

            for (String noInputPrompt : noInputPrompts) {
                noInputPromptsJSON.add(_getPromptJSON(noInputPrompt));
            }

            inputPromptJSON.put("no_input_prompts", noInputPromptsJSON);
        }

        expectedInputJSON.put("input_prompt", inputPromptJSON);

        expectedInputJSON.put("possible_intents", _getPossibleIntentsJSON(INTENT_TEXT));

        return expectedInputJSON;
    }

    private static JsonArray _getPossibleIntentsJSON(String intent) {
        JsonObject jsonObject = new JsonObject();

        jsonObject.put("intent", intent);

        return JsonUtil.getArray(jsonObject);
    }

    private static JsonObject _getPromptJSON(String textToSpeech) {
        JsonObject jsonObject = new JsonObject();

        jsonObject.put("text_to_speech", textToSpeech);

        return jsonObject;
    }

}