TriggerCreator.java

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

package com.twilio.rest.api.v2010.account.usage;

import com.twilio.base.Creator;
import com.twilio.exception.ApiConnectionException;
import com.twilio.exception.ApiException;
import com.twilio.exception.RestException;
import com.twilio.http.HttpMethod;
import com.twilio.http.Request;
import com.twilio.http.Response;
import com.twilio.http.TwilioRestClient;
import com.twilio.rest.Domains;

import java.net.URI;

public class TriggerCreator extends Creator<Trigger> {
    private String pathAccountSid;
    private final URI callbackUrl;
    private final String triggerValue;
    private final Trigger.UsageCategory usageCategory;
    private HttpMethod callbackMethod;
    private String friendlyName;
    private Trigger.Recurring recurring;
    private Trigger.TriggerField triggerBy;

    /**
     * Construct a new TriggerCreator.
     * 
     * @param callbackUrl URL Twilio will request when the trigger fires
     * @param triggerValue the value at which the trigger will fire
     * @param usageCategory The usage category the trigger watches
     */
    public TriggerCreator(final URI callbackUrl, 
                          final String triggerValue, 
                          final Trigger.UsageCategory usageCategory) {
        this.callbackUrl = callbackUrl;
        this.triggerValue = triggerValue;
        this.usageCategory = usageCategory;
    }

    /**
     * Construct a new TriggerCreator.
     * 
     * @param pathAccountSid The account_sid
     * @param callbackUrl URL Twilio will request when the trigger fires
     * @param triggerValue the value at which the trigger will fire
     * @param usageCategory The usage category the trigger watches
     */
    public TriggerCreator(final String pathAccountSid, 
                          final URI callbackUrl, 
                          final String triggerValue, 
                          final Trigger.UsageCategory usageCategory) {
        this.pathAccountSid = pathAccountSid;
        this.callbackUrl = callbackUrl;
        this.triggerValue = triggerValue;
        this.usageCategory = usageCategory;
    }

    /**
     * The HTTP method Twilio will use when making a request to the CallbackUrl. 
     * GET or POST..
     * 
     * @param callbackMethod HTTP method to use with callback_url
     * @return this
     */
    public TriggerCreator setCallbackMethod(final HttpMethod callbackMethod) {
        this.callbackMethod = callbackMethod;
        return this;
    }

    /**
     * A user-specified, human-readable name for the trigger..
     * 
     * @param friendlyName A user-specified, human-readable name for the trigger.
     * @return this
     */
    public TriggerCreator setFriendlyName(final String friendlyName) {
        this.friendlyName = friendlyName;
        return this;
    }

    /**
     * How this trigger recurs. Empty for non-recurring triggers. One of `daily`,
     * `monthly`, or `yearly` for recurring triggers.  A trigger will only fire once
     * during each recurring period.  Recurring periods are in GMT..
     * 
     * @param recurring How this trigger recurs
     * @return this
     */
    public TriggerCreator setRecurring(final Trigger.Recurring recurring) {
        this.recurring = recurring;
        return this;
    }

    /**
     * The field in the UsageRecord that fires the trigger. One of `count`, `usage`,
     * or `price`.
     * 
     * @param triggerBy The field in the UsageRecord that fires the trigger
     * @return this
     */
    public TriggerCreator setTriggerBy(final Trigger.TriggerField triggerBy) {
        this.triggerBy = triggerBy;
        return this;
    }

    /**
     * Make the request to the Twilio API to perform the create.
     * 
     * @param client TwilioRestClient with which to make the request
     * @return Created Trigger
     */
    @Override
    @SuppressWarnings("checkstyle:linelength")
    public Trigger create(final TwilioRestClient client) {
        this.pathAccountSid = this.pathAccountSid == null ? client.getAccountSid() : this.pathAccountSid;
        Request request = new Request(
            HttpMethod.POST,
            Domains.API.toString(),
            "/2010-04-01/Accounts/" + this.pathAccountSid + "/Usage/Triggers.json",
            client.getRegion()
        );

        addPostParams(request);
        Response response = client.request(request);

        if (response == null) {
            throw new ApiConnectionException("Trigger 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 Trigger.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 (callbackUrl != null) {
            request.addPostParam("CallbackUrl", callbackUrl.toString());
        }

        if (triggerValue != null) {
            request.addPostParam("TriggerValue", triggerValue);
        }

        if (usageCategory != null) {
            request.addPostParam("UsageCategory", usageCategory.toString());
        }

        if (callbackMethod != null) {
            request.addPostParam("CallbackMethod", callbackMethod.toString());
        }

        if (friendlyName != null) {
            request.addPostParam("FriendlyName", friendlyName);
        }

        if (recurring != null) {
            request.addPostParam("Recurring", recurring.toString());
        }

        if (triggerBy != null) {
            request.addPostParam("TriggerBy", triggerBy.toString());
        }
    }
}