awsmug/alexa-sdk

<?php

namespace Alexa\Output;

use Alexa\Output_Object;
use Alexa\Exception;

/**
 * Class Directive
 *
 * @since 1.0.0
 *
 * @package Alexa
 */
class Directive implements Output_Object {
    /**
     * Type of Directive
     *
     * @since 1.0.0
     *
     * @var string
     */
    private $type = 'AudioPlayer.Play';

    /**
     * Play behaviour
     *
     * @since 1.0.0
     *
     * @var string
     */
    private $play_behavior = 'REPLACE_ALL';

    /**
     * Audio item object
     *
     * @since 1.0.0
     *
     * @var Audio_Item
     */
    private $audio_item;

    /**
     * Directive type
     *
     * @since 1.0.0
     *
     * @param string $type AudioPlayer.Play, AudioPlayer.Stop or AudioPlayer.ClearQueue
     *
     * @throws Exception
     */
    public function set_type( $type ) {
        if( 'AudioPlayer.Play' !== $type && 'AudioPlayer.Stop' !== $type && 'AudioPlayer.ClearQueue' !== $type ) {
            throw new Exception( sprintf( 'Directive Type %s does not exist', $type ) );
        }

        $this->type = $type;
    }

    /**
     * Get directive type
     *
     * @since 1.0.0
     *
     * @return string AudioPlayer.Play, AudioPlayer.Stop or AudioPlayer.ClearQueue
     */
    public function get_type() {
        return $this->type;
    }

    /**
     * Play behaviour
     *
     * @since 1.0.0
     *
     * @param string $behavior REPLACE_ALL, ENQUEUE or REPLACE_ENQUEUED
     *
     * @throws Exception
     */
    public function set_play_behavior( $play_behavior ) {
        if( 'REPLACE_ALL' !== $play_behavior && 'ENQUEUE' !== $play_behavior && 'REPLACE_ENQUEUED' !== $play_behavior ) {
            throw new Exception( sprintf( 'Play Behaviour %s does not exist', $play_behavior ) );
        }

        $this->play_behavior = $play_behavior;
    }

    /**
     * Get directive type
     *
     * @since 1.0.0
     *
     * @return string REPLACE_ALL, ENQUEUE or REPLACE_ENQUEUED
     */
    public function get_play_behavior() {
        return $this->play_behavior;
    }

    /**
     * Accessing Audio Item Object
     *
     * @since 1.0.0
     *
     * @return Audio_Item
     */
    public function audio_item() {
        if( empty ( $this->audio_item ) ) {
            $this->audio_item = new Audio_Item();
        }
        return $this->audio_item;
    }

    /**
     * Getting Object content
     *
     * @since 1.0.0
     *
     * @return \StdClass $object
     */
    public function get() {
        $object = new \stdClass();

        $object->type = $this->type;

        $object->playBehavior = $this->play_behavior;

        if( $this->audio_item()->has_values() ) {
            $object->audioItem = $this->audio_item()->get();
        }

        return $object;
    }
}