class LLMS_Question_Types {

	/**
	 * Initializer
	 *
	 * @return   void
	 * @since    3.16.0
	 * @version  3.16.0
	 */
	public static function init() {

		add_filter( 'llms_get_question_types', array( __CLASS__, 'load' ), 5 );

	}

	/**
	 * Retrieve question type model defaults
	 *
	 * @since 3.16.0
	 * @since 3.30.3 Fixed typo in icon name.
	 *
	 * @return array
	 */
	public static function get_model() {

		return apply_filters(
			'llms_question_type_model_defaults',
			array(
				'choices'         => array(
					'selectable' => true,
					'markers'    => range( 'A', 'Z' ),
					'max'        => 26,
					'min'        => 2,
					'multi'      => true,
					'type'       => 'text',
				),
				'clarifications'  => true,
				'description'     => true,
				'default_choices' => array(),
				'grading'         => 'auto',
				'group'           => array(
					'order' => 20,
					'name'  => __( 'Other', 'lifterlms' ),
				),
				'icon'            => 'question-circle',
				'id'              => 'generic',
				'image'           => true,
				'name'            => esc_html__( 'Question', 'lifterlms' ),
				'placeholder'     => esc_attr__( 'Enter your question...', 'lifterlms' ),
				'points'          => true,
				'random_lock'     => false,
				'video'           => true,
			)
		);

	}

	/**
	 * Retrieve all the default question types loaded by the LifterLMS core
	 *
	 * @return   array
	 * @since    3.16.0
	 * @version  3.27.0
	 */
	private static function get_types() {

		$upgrade_url = 'https://lifterlms.com/product/advanced-quizzes/?utm_source=LifterLMS%20Plugin&utm_medium=Quiz%20Builder%20Button&utm_campaign=Advanced%20Question%20Upsell&utm_content=3.16.0&utm_term=';

		return array(

			'choice'          => array(
				'choices' => array(),
				'group'   => array(
					'order' => 0,
					'name'  => __( 'Basic Questions', 'lifterlms' ),
				),
				'icon'    => 'check',
				'id'      => 'choice',
				'name'    => esc_html__( 'Multiple Choice', 'lifterlms' ),
			),

			'picture_choice'  => array(
				'choices' => array(
					'type' => 'image',
				),
				'group'   => array(
					'order' => 0,
					'name'  => __( 'Basic Questions', 'lifterlms' ),
				),
				'icon'    => 'picture-o',
				'id'      => 'picture_choice',
				'name'    => esc_html__( 'Picture Choice', 'lifterlms' ),
			),

			'true_false'      => array(
				'choices'         => array(
					'max'   => 2,
					'min'   => 2,
					'multi' => false,
				),
				'default_choices' => array(
					array(
						'choice'  => esc_html__( 'True', 'lifterlms' ),
						'correct' => true,
						'marker'  => 'A',
					),
					array(
						'choice' => esc_html__( 'False', 'lifterlms' ),
						'marker' => 'B',
					),
				),
				'group'           => array(
					'order' => 0,
					'name'  => __( 'Basic Questions', 'lifterlms' ),
				),
				'icon'            => 'toggle-on',
				'id'              => 'true_false',
				'name'            => esc_html__( 'True or False', 'lifterlms' ),
			),

			'content'         => array(
				'choices'        => false,
				'clarifications' => false,
				'icon'           => 'window-maximize',
				'id'             => 'content',
				'grading'        => false,
				'name'           => esc_html__( 'Content', 'lifterlms' ),
				'placeholder'    => esc_attr__( 'Enter your content title...', 'lifterlms' ),
				'points'         => false,
				'random_lock'    => true,
			),

			'existing'        => array(
				'choices'        => false,
				'clarifications' => false,
				'icon'           => 'file-text-o',
				'id'             => 'existing',
				'grading'        => false,
				'name'           => esc_html__( 'Add Existing Question', 'lifterlms' ),
				'placeholder'    => '',
				'points'         => false,
				'random_lock'    => true,
			),

			// 'group' => array(
			// 'choices' => false,
			// 'clarifications' => false,
			// 'group' => array(
			// 'order' => 0,
			// 'name' => __( 'Basic Questions', 'lifterlms' )
			// ),
			// 'icon' => 'sitemap',
			// 'id' => 'group',
			// 'grading' => false,
			// 'name' => esc_html__( 'Question Group', 'lifterlms' ),
			// 'placeholder' => esc_attr__( 'Enter your group title...', 'lifterlms' ),
			// ),

			'blank'           => array(
				'choices' => false,
				'group'   => array(
					'order' => 10,
					'name'  => __( 'Advanced Questions', 'lifterlms' ),
				),
				'icon'    => 'window-minimize',
				'id'      => 'blank',
				'name'    => esc_html__( 'Fill in the Blank', 'lifterlms' ),
				'upgrade' => $upgrade_url . 'blank',
			),

			'reorder'         => array(
				'choices' => false,
				'group'   => array(
					'order' => 10,
					'name'  => __( 'Advanced Questions', 'lifterlms' ),
				),
				'icon'    => 'sort-numeric-asc',
				'id'      => 'reorder',
				'name'    => esc_html__( 'Reorder Items', 'lifterlms' ),
				'upgrade' => $upgrade_url . 'reorder',
			),

			'picture_reorder' => array(
				'choices' => false,
				'group'   => array(
					'order' => 10,
					'name'  => __( 'Advanced Questions', 'lifterlms' ),
				),
				'icon'    => 'picture-o',
				'id'      => 'picture_reorder',
				'name'    => esc_html__( 'Reorder Pictures', 'lifterlms' ),
				'upgrade' => $upgrade_url . 'picture_reorder',
			),

			'short_answer'    => array(
				'choices' => false,
				'group'   => array(
					'order' => 10,
					'name'  => __( 'Advanced Questions', 'lifterlms' ),
				),
				'icon'    => 'align-left',
				'id'      => 'short_answer',
				'name'    => esc_html__( 'Short Answer', 'lifterlms' ),
				'upgrade' => $upgrade_url . 'short_answer',
			),

			'long_answer'     => array(
				'choices' => false,
				'group'   => array(
					'order' => 10,
					'name'  => __( 'Advanced Questions', 'lifterlms' ),
				),
				'icon'    => 'paragraph',
				'id'      => 'long_answer',
				'name'    => esc_html__( 'Long Answer', 'lifterlms' ),
				'upgrade' => $upgrade_url . 'long_answer',
			),

			'upload'          => array(
				'choices' => false,
				'group'   => array(
					'order' => 10,
					'name'  => __( 'Advanced Questions', 'lifterlms' ),
				),
				'icon'    => 'cloud-upload',
				'id'      => 'upload',
				'name'    => esc_html__( 'File Upload', 'lifterlms' ),
				'upgrade' => $upgrade_url . 'upload',
			),

			'code'            => array(
				'choices' => false,
				'group'   => array(
					'order' => 10,
					'name'  => __( 'Advanced Questions', 'lifterlms' ),
				),
				'icon'    => 'code',
				'id'      => 'code',
				'name'    => esc_html__( 'Code', 'lifterlms' ),
				'upgrade' => $upgrade_url . 'code',
			),

			'scale'           => array(
				'choices' => false,
				'group'   => array(
					'order' => 10,
					'name'  => __( 'Advanced Questions', 'lifterlms' ),
				),
				'icon'    => 'sliders',
				'id'      => 'scale',
				'name'    => esc_html__( 'Scale', 'lifterlms' ),
				'upgrade' => $upgrade_url . 'scale',
			),

		);

	}

	/**
	 * Load core question types
	 *
	 * @param    array $questions  array of question types (probably empty).
	 * @return   void
	 * @since    3.16.0
	 * @version  3.16.0
	 */
	public static function load( $questions ) {

		$model = self::get_model();

		foreach ( self::get_types() as $id => $type ) {

			if ( is_array( $type['choices'] ) ) {
				$type['choices'] = wp_parse_args( $type['choices'], $model['choices'] );
			}
			$questions[ $id ] = wp_parse_args( $type, $model );

		}

		return $questions;

	}

}