<?php
/**
 * Checkboxes (many answers) field.
 *
 * @package Fillaro
 */

namespace Fillaro\Fields;

defined( 'ABSPATH' ) || exit;

/**
 * Checkbox group.
 */
class Checkboxes extends Radio {

	/** {@inheritdoc} */
	public function type() {
		return 'checkboxes';
	}

	/** {@inheritdoc} */
	public function label() {
		return __( 'Checkboxes', 'fillaro' );
	}

	/** {@inheritdoc} */
	protected function choice_type() {
		return 'checkbox';
	}

	/** {@inheritdoc} */
	protected function is_checked( $current, $value ) {
		return is_array( $current ) && in_array( (string) $value, array_map( 'strval', $current ), true );
	}

	/** {@inheritdoc} */
	public function sanitize_value( $raw, array $field ) {
		if ( ! is_array( $raw ) ) {
			$raw = ( is_scalar( $raw ) && '' !== (string) $raw ) ? array( $raw ) : array();
		}
		$clean = array();
		foreach ( $raw as $v ) {
			if ( is_scalar( $v ) ) {
				$clean[] = sanitize_text_field( (string) $v );
			}
		}
		return array_values( array_unique( $clean ) );
	}

	/** {@inheritdoc} */
	public function validate( $value, array $field ) {
		$allowed = $this->option_values( $field );
		foreach ( (array) $value as $v ) {
			if ( ! in_array( (string) $v, $allowed, true ) ) {
				return __( 'Choose from the listed options.', 'fillaro' );
			}
		}
		return '';
	}

	/** {@inheritdoc} */
	public function to_text( $value, array $field ) {
		$labels = array();
		foreach ( (array) $value as $v ) {
			$labels[] = $this->option_label( $field, $v );
		}
		return implode( ', ', $labels );
	}
}