<?php

namespace RoosterLMS\Community;

defined( 'ABSPATH' ) || exit;

final class CommunitySettings {

	public const OPTION = 'rooster_lms_community';

	public const DEFAULTS = array(
		'qa_enabled'          => true,
		'qa_mode'             => 3,
		'qa_private'          => true,
		'qa_place'            => 'panel',
		'qa_rate_limit'       => 20,
		'reviews_enabled'     => true,
		'reviews_eligibility' => 'completed',
		'reviews_min_percent' => 50,
		'reviews_approval'    => true,
		'waitlist_guests'     => true,
	);

	public const ELIGIBILITY = array( 'enrolled', 'progress', 'completed' );

	public const QA_PLACES = array( 'panel', 'corner', 'end' );

	public static function all(): array {
		$stored = get_option( self::OPTION, array() );
		return self::sanitize( is_array( $stored ) ? $stored : array() );
	}

	public static function get( string $key ) {
		return array_key_exists( $key, self::DEFAULTS ) ? self::all()[ $key ] : null;
	}

	public static function update( array $values ): array {
		$new = self::sanitize( array_merge( self::all(), $values ) );
		update_option( self::OPTION, $new, true );
		return $new;
	}

	public static function sanitize( array $values ): array {
		$out = array();
		foreach ( self::DEFAULTS as $key => $default ) {
			$value = $values[ $key ] ?? $default;
			if ( is_bool( $default ) ) {
				$bool        = filter_var( $value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE );
				$out[ $key ] = null === $bool ? $default : $bool;
			} elseif ( is_int( $default ) ) {
				$out[ $key ] = is_numeric( $value ) ? max( 0, (int) $value ) : $default;
			} else {
				$out[ $key ] = is_string( $value ) && in_array( $value, 'qa_place' === $key ? self::QA_PLACES : self::ELIGIBILITY, true ) ? $value : $default;
			}
		}
		$out['qa_mode']             = $out['qa_mode'] >= 1 && $out['qa_mode'] <= 5 ? $out['qa_mode'] : self::DEFAULTS['qa_mode'];
		$out['qa_rate_limit']       = min( 1000, $out['qa_rate_limit'] );
		$out['reviews_min_percent'] = max( 1, min( 100, $out['reviews_min_percent'] ) );
		return $out;
	}
}