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/**
 * This code was generated by
 * \ / _    _  _|   _  _
 *  | (_)\/(_)(_|\/| |(/_  v1.0.0
 *       /       /       
 */

package com.twilio.sdk.creator.preview.wireless;

import com.twilio.sdk.client.TwilioRestClient;
import com.twilio.sdk.converter.Promoter;
import com.twilio.sdk.creator.Creator;
import com.twilio.sdk.exception.ApiConnectionException;
import com.twilio.sdk.exception.ApiException;
import com.twilio.sdk.http.HttpMethod;
import com.twilio.sdk.http.Request;
import com.twilio.sdk.http.Response;
import com.twilio.sdk.resource.RestException;
import com.twilio.sdk.resource.preview.wireless.Command;

import java.net.URI;

public class CommandCreator extends Creator {
    private final String device;
    private final String command;
    private String callbackMethod;
    private URI callbackUrl;

    /**
     * Construct a new CommandCreator.
     * 
     * @param device The device
     * @param command The command
     */
    public CommandCreator(final String device, 
                          final String command) {
        this.device = device;
        this.command = command;
    }

    /**
     * The callback_method.
     * 
     * @param callbackMethod The callback_method
     * @return this
     */
    public CommandCreator setCallbackMethod(final String callbackMethod) {
        this.callbackMethod = callbackMethod;
        return this;
    }

    /**
     * The callback_url.
     * 
     * @param callbackUrl The callback_url
     * @return this
     */
    public CommandCreator setCallbackUrl(final URI callbackUrl) {
        this.callbackUrl = callbackUrl;
        return this;
    }

    /**
     * The callback_url.
     * 
     * @param callbackUrl The callback_url
     * @return this
     */
    public CommandCreator setCallbackUrl(final String callbackUrl) {
        return setCallbackUrl(Promoter.uriFromString(callbackUrl));
    }

    /**
     * Make the request to the Twilio API to perform the create.
     * 
     * @param client TwilioRestClient with which to make the request
     * @return Created Command
     */
    @Override
    @SuppressWarnings("checkstyle:linelength")
    public Command execute(final TwilioRestClient client) {
        Request request = new Request(
            HttpMethod.POST,
            TwilioRestClient.Domains.PREVIEW,
            "/wireless/Commands",
            client.getAccountSid()
        );
        
        addPostParams(request);
        Response response = client.request(request);
        
        if (response == null) {
            throw new ApiConnectionException("Command creation failed: Unable to connect to server");
        } else if (!TwilioRestClient.SUCCESS.apply(response.getStatusCode())) {
            RestException restException = RestException.fromJson(response.getStream(), client.getObjectMapper());
            if (restException == null) {
                throw new ApiException("Server Error, no content");
            }
        
            throw new ApiException(
                restException.getMessage(),
                restException.getCode(),
                restException.getMoreInfo(),
                restException.getStatus(),
                null
            );
        }
        
        return Command.fromJson(response.getStream(), client.getObjectMapper());
    }

    /**
     * Add the requested post parameters to the Request.
     * 
     * @param request Request to add post params to
     */
    private void addPostParams(final Request request) {
        if (device != null) {
            request.addPostParam("Device", device);
        }
        
        if (command != null) {
            request.addPostParam("Command", command);
        }
        
        if (callbackMethod != null) {
            request.addPostParam("CallbackMethod", callbackMethod);
        }
        
        if (callbackUrl != null) {
            request.addPostParam("CallbackUrl", callbackUrl.toString());
        }
    }
}