<?php
/**
 * Plugin settings, stored in one option.
 *
 * @package Prodtabs
 */

namespace Prodtabs;

defined( 'ABSPATH' ) || exit;

/**
 * Reads and cleans the option prodtabs_settings.
 */
final class Settings {

	const OPTION = 'prodtabs_settings';

	/** Default values. */
	public static function defaults(): array {
		$natives = array();
		foreach ( Tabs::NATIVE as $key ) {
			$natives[ $key ] = array(
				'title'   => '',
				'visible' => true,
			);
		}
		return array(
			// Shop title (empty: the WooCommerce title) and visibility of each WooCommerce tab, for every product.
			'natives'           => $natives,
			// Order of the WooCommerce tabs on products that have no order of their own.
			'native_order'      => Tabs::NATIVE,
			// Title of the tab repeated as a heading at the top of its panel, as WooCommerce does for Description.
			'heading'           => true,
			// Tabs shown as an accordion on screens narrower than accordion_width (pixels).
			'accordion'         => true,
			'accordion_width'   => 768,
			// A tab without a translation in the language of the page is hidden instead of showing the original text.
			'hide_untranslated' => false,
			// Run the full the_content filter on tab content instead of the core formatting only.
			'the_content'       => false,
			// Delete tabs, library and settings when the plugin is deleted.
			'delete_data'       => false,
			// Apply the filters and classes of Custom Product Tabs (YIKES), so that customizations made for it keep working.
			'yikes_compat'      => false,
			// Prodtabs menu in the main WordPress menu: overview, shared tabs, settings. Off, everything stays under Products and WooCommerce.
			'menu'              => true,
		);
	}

	/** Settings merged with the defaults. */
	public static function all(): array {
		return self::sanitize( get_option( self::OPTION, array() ) );
	}

	/**
	 * One setting.
	 *
	 * @param string $key Setting name.
	 * @return mixed
	 */
	public static function get( string $key ) {
		$all = self::all();
		return $all[ $key ] ?? null;
	}

	/**
	 * Cleans a settings array; missing values take their default.
	 *
	 * @param mixed $value Raw settings.
	 */
	public static function sanitize( $value ): array {
		$value    = is_array( $value ) ? $value : array();
		$defaults = self::defaults();
		$out      = $defaults;

		foreach ( Tabs::NATIVE as $key ) {
			$raw = isset( $value['natives'][ $key ] ) && is_array( $value['natives'][ $key ] ) ? $value['natives'][ $key ] : array();
			if ( isset( $raw['title'] ) ) {
				$out['natives'][ $key ]['title'] = sanitize_text_field( (string) $raw['title'] );
			}
			if ( isset( $raw['visible'] ) ) {
				$out['natives'][ $key ]['visible'] = Tabs::to_bool( $raw['visible'] );
			}
		}

		if ( isset( $value['native_order'] ) && is_array( $value['native_order'] ) ) {
			$order = array_values( array_intersect( array_map( 'strval', $value['native_order'] ), Tabs::NATIVE ) );
			$order = array_values( array_unique( $order ) );
			if ( count( $order ) === count( Tabs::NATIVE ) ) {
				$out['native_order'] = $order;
			}
		}

		foreach ( array( 'heading', 'the_content', 'delete_data', 'yikes_compat', 'menu', 'accordion', 'hide_untranslated' ) as $flag ) {
			if ( isset( $value[ $flag ] ) ) {
				$out[ $flag ] = Tabs::to_bool( $value[ $flag ] );
			}
		}
		if ( isset( $value['accordion_width'] ) && is_numeric( $value['accordion_width'] ) ) {
			$out['accordion_width'] = max( 320, min( 2000, (int) $value['accordion_width'] ) );
		}
		return $out;
	}

	/**
	 * Shop title chosen for a WooCommerce tab; empty when it keeps the WooCommerce title. With WPML or Polylang the
	 * option arrives already translated (admin texts of wpml-config.xml).
	 *
	 * @param string $key Native key.
	 */
	public static function native_title( string $key ): string {
		$natives = self::get( 'natives' );
		return Multilingual::native_title( (string) ( $natives[ $key ]['title'] ?? '' ), $key );
	}
}