<?php
/**
 * Global plugin settings.
 *
 * @package Fillaro
 */

namespace Fillaro\Support;

defined( 'ABSPATH' ) || exit;

/**
 * Site-wide settings stored in one option.
 */
class Settings {

	const OPTION = 'fillaro_settings';

	/**
	 * Defaults.
	 *
	 * @return array
	 */
	public static function defaults() {
		/**
		 * Filters global setting defaults. Add-ons add their own keys.
		 *
		 * @param array $defaults Defaults.
		 */
		return apply_filters(
			'fillaro/settings_defaults',
			array(
				'fromName'          => '',
				'fromEmail'         => '',
				'rateLimit'         => 10,
				'keepDays'          => 0,
				'deleteOnUninstall' => false,
			)
		);
	}

	/**
	 * All settings.
	 *
	 * @return array
	 */
	public static function all() {
		$saved = get_option( self::OPTION, array() );
		return array_merge( self::defaults(), is_array( $saved ) ? $saved : array() );
	}

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

	/**
	 * Sanitize and save.
	 *
	 * @param array $raw Raw values.
	 * @return array Saved settings.
	 */
	public static function save( array $raw ) {
		$current = self::all();
		$raw     = array_merge( $current, $raw );
		$clean   = array(
			'fromName'          => is_scalar( $raw['fromName'] ) ? sanitize_text_field( (string) $raw['fromName'] ) : '',
			'fromEmail'         => is_scalar( $raw['fromEmail'] ) ? (string) sanitize_email( (string) $raw['fromEmail'] ) : '',
			'rateLimit'         => max( 0, min( 1000, (int) $raw['rateLimit'] ) ),
			'keepDays'          => max( 0, min( 3650, (int) $raw['keepDays'] ) ),
			'deleteOnUninstall' => (bool) $raw['deleteOnUninstall'],
		);
		/**
		 * Filters sanitized global settings. Add-ons sanitize their own keys.
		 *
		 * @param array $clean Clean core settings.
		 * @param array $raw   Raw values merged with current settings.
		 */
		$clean = (array) apply_filters( 'fillaro/sanitize_settings', $clean, $raw );
		update_option( self::OPTION, $clean, false );
		return $clean;
	}
}