<?php

/**
 * Feature gating (free vs. pro).
 *
 * Every premium check in the codebase goes through this class so the logic lives
 * in one place. The `__premium_only` blocks are removed by Freemius when the free
 * version is generated, meaning the free build can never report itself as pro.
 *
 * @package KarmaDocs
 */
namespace KarmaDocs;

defined( 'ABSPATH' ) || exit;
/**
 * Feature flags and plan limits.
 */
class Features {
    /**
     * Number of knowledge bases allowed on the free plan.
     */
    const FREE_KB_LIMIT = 1;

    /**
     * Whether premium code can be used (valid Pro/Business/Agency license or trial).
     *
     * @return bool
     */
    public static function is_pro() {
        $is_pro = false;
        return $is_pro;
    }

    /**
     * Maximum number of knowledge bases (0 = unlimited).
     *
     * @return int
     */
    public static function kb_limit() {
        return ( self::is_pro() ? 0 : self::FREE_KB_LIMIT );
    }

    /**
     * Whether another knowledge base can be created.
     *
     * @return bool
     */
    public static function can_create_kb() {
        $limit = self::kb_limit();
        if ( 0 === $limit ) {
            return true;
        }
        $count = (int) wp_count_terms( array(
            'taxonomy'   => Taxonomies::KB,
            'hide_empty' => false,
        ) );
        return $count < $limit;
    }

    /**
     * Upgrade URL (Freemius checkout / pricing page).
     *
     * @return string
     */
    public static function upgrade_url() {
        $url = kdocs_fs()->get_upgrade_url();
        return ( $url ? $url : 'https://karmadocs.com/pricing/' );
    }

    /**
     * Map of premium features exposed to the admin app so it can render locks.
     *
     * @return array<string,bool>
     */
    public static function map() {
        $pro = self::is_pro();
        return array(
            'multipleKb'      => $pro,
            'analytics'       => $pro,
            'accessControl'   => $pro,
            'importExport'    => $pro,
            'helpWidget'      => $pro,
            'feedbackForm'    => $pro,
            'notifications'   => $pro,
            'contentReview'   => $pro,
            'glossary'        => $pro,
            'iconPacks'       => $pro,
            'advancedLayouts' => $pro,
            'whiteLabel'      => $pro,
            'customCss'       => $pro,
            'crossKbMove'     => $pro,
            'migration'       => $pro,
            'ai'              => $pro,
            'integrations'    => $pro,
            'pdfExport'       => $pro,
            'versions'        => $pro,
            'workflow'        => $pro,
        );
    }

}