<?php
/**
 * Batch 38 — FunnelKit (Funnel Builder) tools. Net-new, GPL-2.0-or-later. See NOTICE.md.
 * Inert unless FunnelKit (WFFN_VERSION) is active. Defensive about its storage (CPT or custom tables).
 */

namespace AskTamMCP\Extensions;

defined('ABSPATH') || exit;

class Batch38 {

    public static function register($registry): void {
        if (!defined('WFFN_VERSION')) return;

        $def = function (string $name, string $desc, array $props, array $required, string $scope, string $method) {
            $schema = ['type' => 'object', 'properties' => $props ?: new \stdClass()];
            if ($required) $schema['required'] = $required;
            return ['name' => $name, 'description' => $desc, 'scope' => $scope,
                    'handler' => 'AskTamMCP\\Extensions\\Batch38::' . $method, 'inputSchema' => $schema];
        };

        $registry->register($def('funnelkit_detect', 'Report whether FunnelKit (Funnel Builder) is active and its version.', [], [], 'read', 'detect'));
        $registry->register($def('funnelkit_list_funnels', 'List FunnelKit funnels (id, title). Reads the funnels table or CPT, whichever this install uses.',
            ['per_page' => ['type' => 'integer', 'default' => 50]], [], 'read', 'listFunnels'));
    }

    public static function detect(array $args): array {
        return ['active' => defined('WFFN_VERSION'), 'version' => defined('WFFN_VERSION') ? WFFN_VERSION : null];
    }

    public static function listFunnels(array $args): array {
        global $wpdb;
        $per = max(1, (int) ($args['per_page'] ?? 50));
        $t = $wpdb->prefix . 'wffn_funnels';
        if ($wpdb->get_var($wpdb->prepare('SHOW TABLES LIKE %s', $t)) === $t) {
            $rows = $wpdb->get_results($wpdb->prepare("SELECT id, title FROM {$t} ORDER BY id DESC LIMIT %d", $per), ARRAY_A);
            $out = [];
            foreach ((array) $rows as $r) $out[] = ['id' => (int) $r['id'], 'title' => $r['title']];
            return ['supported' => true, 'source' => 'table', 'count' => count($out), 'funnels' => $out];
        }
        if (post_type_exists('wffn_funnel')) {
            $posts = get_posts(['post_type' => 'wffn_funnel', 'post_status' => 'any', 'numberposts' => $per, 'orderby' => 'date', 'order' => 'DESC']);
            $out = [];
            foreach ($posts as $p) $out[] = ['id' => $p->ID, 'title' => $p->post_title];
            return ['supported' => true, 'source' => 'cpt', 'count' => count($out), 'funnels' => $out];
        }
        return ['supported' => false, 'note' => 'FunnelKit funnels storage not found on this install.', 'funnels' => []];
    }
}