<?php
/**
 * This file holds an object for a single checkbox field.
 *
 * @package easy-settings-for-wordpress
 */

namespace easySettingsForWordPress\Fields;

// prevent direct access.
defined( 'ABSPATH' ) || exit;

use easySettingsForWordPress\Field_Base;
use easySettingsForWordPress\Setting;
use easySettingsForWordPress\Settings;

/**
 * Object to handle a checkbox for single setting.
 */
class Checkbox extends Field_Base {
	/**
	 * The type name.
	 *
	 * @var string
	 */
	protected string $type_name = 'Checkbox';

	/**
	 * Show the label with the checkbox.
	 *
	 * @var bool
	 */
	private bool $with_label = false;

	/**
	 * Return the HTML-code to display this field.
	 *
	 * @param array<string,mixed> $attr Attributes for this field.
	 *
	 * @return void
	 */
	public function display( array $attr ): void {
		// bail if no attributes are set.
		if ( empty( $attr ) ) {
			return;
		}

		// bail if no setting object is set.
		if ( empty( $attr['setting'] ) ) {
			return;
		}

		// bail if field is not a Setting object.
		if ( ! $attr['setting'] instanceof Setting ) {
			return;
		}

		// get the setting object.
		$setting = $attr['setting'];

		// show hidden field if this is set to readonly.
		if ( $this->is_readonly() ) {
			?><input type="hidden" name="<?php echo esc_attr( $setting->get_name() ); ?>" value="<?php echo ( 1 === absint( get_option( $setting->get_name(), 0 ) ) ? 1 : 0 ); ?>">
			<?php
		}

		?>
		<input type="checkbox" id="<?php echo esc_attr( $setting->get_name() ); ?>"
				name="<?php echo esc_attr( $setting->get_name() ); ?>"
				value="1"
				<?php
				echo ( $this->is_readonly() ? ' disabled="disabled"' : '' );
				echo ( 1 === absint( get_option( $setting->get_name(), 0 ) ) ? ' checked="checked"' : '' );
				?>
				class="<?php echo esc_attr( $this->get_settings_obj()->get_slug() ); ?>-field-width"
				title="<?php echo esc_attr( $this->get_title() ); ?>"
				data-depends="<?php echo esc_attr( $this->get_depend() ); ?>"
		>
		<?php

		// show the label with the checkbox.
		if ( $this->get_with_label() ) {
			?>
			<label for="<?php echo esc_attr( $setting->get_name() ); ?>"><?php echo wp_kses_post( $this->get_title() ); ?></label>
			<?php
		}

		// show optional description for this checkbox.
		if ( ! empty( $this->get_description() ) ) {
			echo '<p>' . wp_kses_post( $this->get_description() ) . '</p>';
		}
	}

	/**
	 * The sanitize callback for this field.
	 *
	 * @param mixed $value The value to save.
	 *
	 * @return int
	 */
	public function default_sanitize_callback( mixed $value ): int {
		// bail if value is null.
		if ( is_null( $value ) ) {
			return 0;
		}

		// return the value.
		return absint( $value );
	}

	/**
	 * Return whether we show the label with the checkbox.
	 *
	 * @return bool
	 */
	private function get_with_label(): bool {
		return $this->with_label;
	}

	/**
	 * Set to show the label with the checkbox.
	 *
	 * @param bool $with_label True to show the label.
	 *
	 * @return void
	 */
	public function set_with_label( bool $with_label ): void {
		$this->with_label = $with_label;
	}
}
