com.github.ithildir.airbot.service.impl.MapQuestGeoServiceImpl.java Source code

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Here is the source code for com.github.ithildir.airbot.service.impl.MapQuestGeoServiceImpl.java

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/**
 * Copyright (c) 2017 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.airbot.service.impl;

import com.github.ithildir.airbot.model.Location;
import com.github.ithildir.airbot.service.GeoService;

import io.netty.handler.codec.http.HttpResponseStatus;

import io.vertx.core.AsyncResult;
import io.vertx.core.Future;
import io.vertx.core.Handler;
import io.vertx.core.Vertx;
import io.vertx.core.buffer.Buffer;
import io.vertx.core.json.JsonArray;
import io.vertx.core.json.JsonObject;
import io.vertx.ext.web.client.HttpRequest;
import io.vertx.ext.web.client.HttpResponse;
import io.vertx.ext.web.client.WebClient;
import io.vertx.ext.web.client.WebClientOptions;
import io.vertx.serviceproxy.ServiceException;

import java.util.Objects;

/**
 * @author Andrea Di Giorgi
 */
public class MapQuestGeoServiceImpl implements GeoService {

    public MapQuestGeoServiceImpl(Vertx vertx, String key, boolean open) {
        _key = Objects.requireNonNull(key);

        WebClientOptions webClientOptions = new WebClientOptions();

        String defaultHost = "www.mapquestapi.com";

        if (open) {
            defaultHost = "open.mapquestapi.com";
        }

        webClientOptions.setDefaultHost(defaultHost);
        webClientOptions.setDefaultPort(443);
        webClientOptions.setSsl(true);

        _webClient = WebClient.create(vertx, webClientOptions);
    }

    @Override
    public void getLocationByCoordinates(double latitude, double longitude,
            Handler<AsyncResult<Location>> handler) {

        HttpRequest<Buffer> httpRequest = _webClient.get("/geocoding/v1/reverse");

        httpRequest.setQueryParam("location", latitude + "," + longitude);

        _getLocation(httpRequest, handler);
    }

    @Override
    public void getLocationByQuery(String query, Handler<AsyncResult<Location>> handler) {

        HttpRequest<Buffer> httpRequest = _webClient.get("/geocoding/v1/address");

        httpRequest.setQueryParam("ignoreLatLngInput", "true");
        httpRequest.setQueryParam("location", query);
        httpRequest.setQueryParam("maxResults", "1");
        httpRequest.setQueryParam("thumbMaps", "false");

        _getLocation(httpRequest, handler);
    }

    private void _getLocation(HttpRequest<Buffer> httpRequest, Handler<AsyncResult<Location>> handler) {

        httpRequest.setQueryParam("key", _key);

        httpRequest.send(asyncResult -> {
            HttpResponse<Buffer> httpResponse = _handleHttpResponse(asyncResult, handler);

            if (httpResponse == null) {
                return;
            }

            Location location = _getLocation(httpResponse.bodyAsJsonObject());

            handler.handle(Future.succeededFuture(location));
        });
    }

    private Location _getLocation(JsonObject jsonObject) {
        JsonArray resultsJsonArray = jsonObject.getJsonArray("results");

        JsonObject resultJsonObject = resultsJsonArray.getJsonObject(0);

        JsonArray locationsJsonArray = resultJsonObject.getJsonArray("locations");

        JsonObject locationJsonObject = locationsJsonArray.getJsonObject(0);

        JsonObject latLngJsonObject = locationJsonObject.getJsonObject("latLng");

        double latitude = latLngJsonObject.getDouble("lat");
        double longitude = latLngJsonObject.getDouble("lng");

        String country = locationJsonObject.getString("adminArea1");

        return new Location(latitude, longitude, country);
    }

    private <R, T> HttpResponse<T> _handleHttpResponse(AsyncResult<HttpResponse<T>> asyncResult,
            Handler<AsyncResult<R>> handler) {

        if (asyncResult.failed()) {
            handler.handle(Future.failedFuture(asyncResult.cause()));

            return null;
        }

        HttpResponse<T> httpResponse = asyncResult.result();

        int statusCode = httpResponse.statusCode();

        if (statusCode != HttpResponseStatus.OK.code()) {
            handler.handle(ServiceException.fail(statusCode, httpResponse.bodyAsString()));

            return null;
        }

        return httpResponse;
    }

    private final String _key;
    private final WebClient _webClient;

}